diff --git a/integration-tests/src/test/kotlin/org/springframework/aop/framework/autoproxy/AspectJAutoProxyInterceptorKotlinIntegrationTests.kt b/integration-tests/src/test/kotlin/org/springframework/aop/framework/autoproxy/AspectJAutoProxyInterceptorKotlinIntegrationTests.kt
index e22c155daa7..ee20417a9a0 100644
--- a/integration-tests/src/test/kotlin/org/springframework/aop/framework/autoproxy/AspectJAutoProxyInterceptorKotlinIntegrationTests.kt
+++ b/integration-tests/src/test/kotlin/org/springframework/aop/framework/autoproxy/AspectJAutoProxyInterceptorKotlinIntegrationTests.kt
@@ -17,7 +17,6 @@
 package org.springframework.aop.framework.autoproxy
 
 import kotlinx.coroutines.delay
-import kotlinx.coroutines.runBlocking
 import org.aopalliance.intercept.MethodInterceptor
 import org.aopalliance.intercept.MethodInvocation
 import org.aspectj.lang.ProceedingJoinPoint
@@ -73,43 +72,37 @@ class AspectJAutoProxyInterceptorKotlinIntegrationTests(
 	}
 
 	@Test
-	fun `Multiple interceptors with suspending function`() {
+	suspend fun `Multiple interceptors with suspending function`() {
 		assertThat(firstAdvisor.interceptor.invocations).isEmpty()
 		assertThat(secondAdvisor.interceptor.invocations).isEmpty()
 		val value = "Hello!"
-		runBlocking {
-			assertThat(echo.suspendingEcho(value)).isEqualTo(value)
-		}
+		assertThat(echo.suspendingEcho(value)).isEqualTo(value)
 		assertThat(firstAdvisor.interceptor.invocations).singleElement().matches { Mono::class.java.isAssignableFrom(it) }
 		assertThat(secondAdvisor.interceptor.invocations).singleElement().matches { Mono::class.java.isAssignableFrom(it) }
 	}
 
 	@Test // gh-33095
-	fun `Aspect and reactive transactional with suspending function`() {
+	suspend fun `Aspect and reactive transactional with suspending function`() {
 		assertThat(countingAspect.counter).isZero()
 		assertThat(reactiveTransactionManager.commits).isZero()
 		val value = "Hello!"
-		runBlocking {
-			assertThat(echo.suspendingTransactionalEcho(value)).isEqualTo(value)
-		}
+		assertThat(echo.suspendingTransactionalEcho(value)).isEqualTo(value)
 		assertThat(countingAspect.counter).`as`("aspect applied").isOne()
 		assertThat(reactiveTransactionManager.begun).isOne()
 		assertThat(reactiveTransactionManager.commits).`as`("transactional applied").isOne()
 	}
 
 	@Test // gh-33210
-	fun `Aspect and cacheable with suspending function`() {
+	suspend fun `Aspect and cacheable with suspending function`() {
 		assertThat(countingAspect.counter).isZero()
 		val value = "Hello!"
-		runBlocking {
-			assertThat(echo.suspendingCacheableEcho(value)).isEqualTo("$value 0")
-			assertThat(echo.suspendingCacheableEcho(value)).isEqualTo("$value 0")
-			assertThat(echo.suspendingCacheableEcho(value)).isEqualTo("$value 0")
-			assertThat(countingAspect.counter).`as`("aspect applied once").isOne()
-
-			assertThat(echo.suspendingCacheableEcho("$value bis")).isEqualTo("$value bis 1")
-			assertThat(echo.suspendingCacheableEcho("$value bis")).isEqualTo("$value bis 1")
-		}
+		assertThat(echo.suspendingCacheableEcho(value)).isEqualTo("$value 0")
+		assertThat(echo.suspendingCacheableEcho(value)).isEqualTo("$value 0")
+		assertThat(echo.suspendingCacheableEcho(value)).isEqualTo("$value 0")
+		assertThat(countingAspect.counter).`as`("aspect applied once").isOne()
+
+		assertThat(echo.suspendingCacheableEcho("$value bis")).isEqualTo("$value bis 1")
+		assertThat(echo.suspendingCacheableEcho("$value bis")).isEqualTo("$value bis 1")
 		assertThat(countingAspect.counter).`as`("aspect applied once per key").isEqualTo(2)
 	}
 
diff --git a/spring-aop/src/test/kotlin/org/springframework/aop/framework/CoroutinesUtilsTests.kt b/spring-aop/src/test/kotlin/org/springframework/aop/framework/CoroutinesUtilsTests.kt
index 188b72f8b1e..81bae7b5844 100644
--- a/spring-aop/src/test/kotlin/org/springframework/aop/framework/CoroutinesUtilsTests.kt
+++ b/spring-aop/src/test/kotlin/org/springframework/aop/framework/CoroutinesUtilsTests.kt
@@ -19,7 +19,6 @@ package org.springframework.aop.framework
 import kotlinx.coroutines.CoroutineName
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.toList
-import kotlinx.coroutines.runBlocking
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.Test
 import reactor.core.publisher.Flux
@@ -37,39 +36,31 @@ class CoroutinesUtilsTests {
 	fun awaitSingleNonNullValue() {
 		val value = "foo"
 		val continuation = Continuation<Any>(CoroutineName("test")) { }
-		runBlocking {
-			assertThat(CoroutinesUtils.awaitSingleOrNull(value, continuation)).isEqualTo(value)
-		}
+		assertThat(CoroutinesUtils.awaitSingleOrNull(value, continuation)).isEqualTo(value)
 	}
 
 	@Test
 	fun awaitSingleNullValue() {
 		val value = null
 		val continuation = Continuation<Any>(CoroutineName("test")) { }
-		runBlocking {
-			assertThat(CoroutinesUtils.awaitSingleOrNull(value, continuation)).isNull()
-		}
+		assertThat(CoroutinesUtils.awaitSingleOrNull(value, continuation)).isNull()
 	}
 
 	@Test
 	fun awaitSingleMonoValue() {
 		val value = "foo"
 		val continuation = Continuation<Any>(CoroutineName("test")) { }
-		runBlocking {
-			assertThat(CoroutinesUtils.awaitSingleOrNull(Mono.just(value), continuation)).isEqualTo(value)
-		}
+		assertThat(CoroutinesUtils.awaitSingleOrNull(Mono.just(value), continuation)).isEqualTo(value)
 	}
 
 	@Test
 	@Suppress("UNCHECKED_CAST")
-	fun flow() {
+	suspend fun flow() {
 		val value1 = "foo"
 		val value2 = "bar"
 		val values = Flux.just(value1, value2)
 		val flow = CoroutinesUtils.asFlow(values) as Flow<String>
-		runBlocking {
-			assertThat(flow.toList()).containsExactly(value1, value2)
-		}
+		assertThat(flow.toList()).containsExactly(value1, value2)
 	}
 
 }
diff --git a/spring-context/src/test/kotlin/org/springframework/cache/KotlinCacheReproTests.kt b/spring-context/src/test/kotlin/org/springframework/cache/KotlinCacheReproTests.kt
index 465940061ff..ff45b40e0b7 100644
--- a/spring-context/src/test/kotlin/org/springframework/cache/KotlinCacheReproTests.kt
+++ b/spring-context/src/test/kotlin/org/springframework/cache/KotlinCacheReproTests.kt
@@ -16,7 +16,6 @@
 
 package org.springframework.cache
 
-import kotlinx.coroutines.runBlocking
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.Test
 import org.springframework.beans.testfixture.beans.TestBean
@@ -33,51 +32,47 @@ import org.springframework.context.annotation.Configuration
 class KotlinCacheReproTests {
 
 	@Test
-	fun spr14235AdaptsToSuspendingFunction() {
-		runBlocking {
-			val context = AnnotationConfigApplicationContext(
-				Spr14235Config::class.java,
-				Spr14235SuspendingService::class.java
-			)
-			val bean = context.getBean(Spr14235SuspendingService::class.java)
-			val cache = context.getBean(CacheManager::class.java).getCache("itemCache")!!
-			val tb: TestBean = bean.findById("tb1")
-			assertThat(bean.findById("tb1")).isSameAs(tb)
-			assertThat(cache["tb1"]!!.get()).isSameAs(tb)
-			bean.clear()
-			val tb2: TestBean = bean.findById("tb1")
-			assertThat(tb2).isNotSameAs(tb)
-			assertThat(cache["tb1"]!!.get()).isSameAs(tb2)
-			bean.clear()
-			bean.insertItem(tb)
-			assertThat(bean.findById("tb1")).isSameAs(tb)
-			assertThat(cache["tb1"]!!.get()).isSameAs(tb)
-			context.close()
-		}
+	suspend fun spr14235AdaptsToSuspendingFunction() {
+		val context = AnnotationConfigApplicationContext(
+			Spr14235Config::class.java,
+			Spr14235SuspendingService::class.java
+		)
+		val bean = context.getBean(Spr14235SuspendingService::class.java)
+		val cache = context.getBean(CacheManager::class.java).getCache("itemCache")!!
+		val tb: TestBean = bean.findById("tb1")
+		assertThat(bean.findById("tb1")).isSameAs(tb)
+		assertThat(cache["tb1"]!!.get()).isSameAs(tb)
+		bean.clear()
+		val tb2: TestBean = bean.findById("tb1")
+		assertThat(tb2).isNotSameAs(tb)
+		assertThat(cache["tb1"]!!.get()).isSameAs(tb2)
+		bean.clear()
+		bean.insertItem(tb)
+		assertThat(bean.findById("tb1")).isSameAs(tb)
+		assertThat(cache["tb1"]!!.get()).isSameAs(tb)
+		context.close()
 	}
 
 	@Test
-	fun spr14235AdaptsToSuspendingFunctionWithSync() {
-		runBlocking {
-			val context = AnnotationConfigApplicationContext(
-				Spr14235Config::class.java,
-				Spr14235SuspendingServiceSync::class.java
-			)
-			val bean = context.getBean(Spr14235SuspendingServiceSync::class.java)
-			val cache = context.getBean(CacheManager::class.java).getCache("itemCache")!!
-			val tb = bean.findById("tb1")
-			assertThat(bean.findById("tb1")).isSameAs(tb)
-			assertThat(cache["tb1"]!!.get()).isSameAs(tb)
-			cache.clear()
-			val tb2 = bean.findById("tb1")
-			assertThat(tb2).isNotSameAs(tb)
-			assertThat(cache["tb1"]!!.get()).isSameAs(tb2)
-			cache.clear()
-			bean.insertItem(tb)
-			assertThat(bean.findById("tb1")).isSameAs(tb)
-			assertThat(cache["tb1"]!!.get()).isSameAs(tb)
-			context.close()
-		}
+	suspend fun spr14235AdaptsToSuspendingFunctionWithSync() {
+		val context = AnnotationConfigApplicationContext(
+			Spr14235Config::class.java,
+			Spr14235SuspendingServiceSync::class.java
+		)
+		val bean = context.getBean(Spr14235SuspendingServiceSync::class.java)
+		val cache = context.getBean(CacheManager::class.java).getCache("itemCache")!!
+		val tb = bean.findById("tb1")
+		assertThat(bean.findById("tb1")).isSameAs(tb)
+		assertThat(cache["tb1"]!!.get()).isSameAs(tb)
+		cache.clear()
+		val tb2 = bean.findById("tb1")
+		assertThat(tb2).isNotSameAs(tb)
+		assertThat(cache["tb1"]!!.get()).isSameAs(tb2)
+		cache.clear()
+		bean.insertItem(tb)
+		assertThat(bean.findById("tb1")).isSameAs(tb)
+		assertThat(cache["tb1"]!!.get()).isSameAs(tb)
+		context.close()
 	}
 
 	@Test
diff --git a/spring-context/src/test/kotlin/org/springframework/validation/beanvalidation/MethodValidationKotlinTests.kt b/spring-context/src/test/kotlin/org/springframework/validation/beanvalidation/MethodValidationKotlinTests.kt
index d23681a97fb..38e00a39620 100644
--- a/spring-context/src/test/kotlin/org/springframework/validation/beanvalidation/MethodValidationKotlinTests.kt
+++ b/spring-context/src/test/kotlin/org/springframework/validation/beanvalidation/MethodValidationKotlinTests.kt
@@ -49,7 +49,7 @@ class MethodValidationKotlinTests {
 	}
 
 	@Test
-	fun coroutinesParameterValidation() = runBlocking<Unit> {
+	suspend fun coroutinesParameterValidation() {
 		val bean = MyValidCoroutinesBean()
 		val proxyFactory = ProxyFactory(bean)
 		val validator = LocalValidatorFactoryBean()
diff --git a/spring-core/src/test/kotlin/org/springframework/core/CoroutinesUtilsTests.kt b/spring-core/src/test/kotlin/org/springframework/core/CoroutinesUtilsTests.kt
index dccb13d0e83..c03a2039d30 100644
--- a/spring-core/src/test/kotlin/org/springframework/core/CoroutinesUtilsTests.kt
+++ b/spring-core/src/test/kotlin/org/springframework/core/CoroutinesUtilsTests.kt
@@ -18,11 +18,17 @@ package org.springframework.core
 
 import io.micrometer.observation.Observation
 import io.micrometer.observation.tck.TestObservationRegistry
-import kotlinx.coroutines.*
+import kotlinx.coroutines.CoroutineName
+import kotlinx.coroutines.Deferred
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.async
+import kotlinx.coroutines.coroutineScope
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.reactor.awaitSingle
 import kotlinx.coroutines.reactor.awaitSingleOrNull
+import kotlinx.coroutines.runBlocking
 import org.assertj.core.api.Assertions
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.Test
@@ -33,8 +39,6 @@ import reactor.core.publisher.Mono
 import reactor.test.StepVerifier
 import kotlin.coroutines.Continuation
 import kotlin.coroutines.coroutineContext
-import kotlin.reflect.full.primaryConstructor
-import kotlin.reflect.jvm.isAccessible
 import kotlin.reflect.jvm.javaMethod
 
 /**
@@ -47,8 +51,8 @@ class CoroutinesUtilsTests {
 	private val observationRegistry = TestObservationRegistry.create()
 
 	@Test
-	fun deferredToMono() {
-		runBlocking {
+	suspend fun deferredToMono() {
+		coroutineScope {
 			val deferred: Deferred<String> = async(Dispatchers.IO) {
 				delay(1)
 				"foo"
@@ -62,12 +66,10 @@ class CoroutinesUtilsTests {
 	}
 
 	@Test
-	fun monoToDeferred() {
-		runBlocking {
-			val mono = Mono.just("foo")
-			val deferred = CoroutinesUtils.monoToDeferred(mono)
-			Assertions.assertThat(deferred.await()).isEqualTo("foo")
-		}
+	suspend fun monoToDeferred() {
+		val mono = Mono.just("foo")
+		val deferred = CoroutinesUtils.monoToDeferred(mono)
+		Assertions.assertThat(deferred.await()).isEqualTo("foo")
 	}
 
 	@Test
@@ -93,12 +95,10 @@ class CoroutinesUtilsTests {
 	}
 
 	@Test
-	fun invokeSuspendingFunctionWithNullableParameter() {
+	suspend fun invokeSuspendingFunctionWithNullableParameter() {
 		val method = CoroutinesUtilsTests::class.java.getDeclaredMethod("suspendingFunctionWithNullable", String::class.java, Continuation::class.java)
 		val mono = CoroutinesUtils.invokeSuspendingFunction(method, this, null, null) as Mono
-		runBlocking {
-			Assertions.assertThat(mono.awaitSingleOrNull()).isNull()
-		}
+		Assertions.assertThat(mono.awaitSingleOrNull()).isNull()
 	}
 
 	@Test
@@ -154,23 +154,19 @@ class CoroutinesUtilsTests {
 	}
 
 	@Test
-	fun invokeSuspendingFunctionWithNullContinuationParameterAndContext() {
+	suspend fun invokeSuspendingFunctionWithNullContinuationParameterAndContext() {
 		val method = CoroutinesUtilsTests::class.java.getDeclaredMethod("suspendingFunctionWithContext", String::class.java, Continuation::class.java)
 		val context = CoroutineName("name")
 		val mono = CoroutinesUtils.invokeSuspendingFunction(context, method, this, "foo", null) as Mono
-		runBlocking {
-			Assertions.assertThat(mono.awaitSingle()).isEqualTo("foo")
-		}
+		Assertions.assertThat(mono.awaitSingle()).isEqualTo("foo")
 	}
 
 	@Test
-	fun invokeSuspendingFunctionWithoutContinuationParameterAndContext() {
+	suspend fun invokeSuspendingFunctionWithoutContinuationParameterAndContext() {
 		val method = CoroutinesUtilsTests::class.java.getDeclaredMethod("suspendingFunctionWithContext", String::class.java, Continuation::class.java)
 		val context = CoroutineName("name")
 		val mono = CoroutinesUtils.invokeSuspendingFunction(context, method, this, "foo") as Mono
-		runBlocking {
-			Assertions.assertThat(mono.awaitSingle()).isEqualTo("foo")
-		}
+		Assertions.assertThat(mono.awaitSingle()).isEqualTo("foo")
 	}
 
 	@Test
@@ -181,57 +177,45 @@ class CoroutinesUtilsTests {
 	}
 
 	@Test
-	fun invokeSuspendingFunctionReturningUnit() {
+	suspend fun invokeSuspendingFunctionReturningUnit() {
 		val method = CoroutinesUtilsTests::class.java.getDeclaredMethod("suspendingUnit", Continuation::class.java)
 		val mono = CoroutinesUtils.invokeSuspendingFunction(method, this) as Mono
-		runBlocking {
-			Assertions.assertThat(mono.awaitSingleOrNull()).isNull()
-		}
+		Assertions.assertThat(mono.awaitSingleOrNull()).isNull()
 	}
 
 	@Test
-	fun invokeSuspendingFunctionReturningNull() {
+	suspend fun invokeSuspendingFunctionReturningNull() {
 		val method = CoroutinesUtilsTests::class.java.getDeclaredMethod("suspendingNullable", Continuation::class.java)
 		val mono = CoroutinesUtils.invokeSuspendingFunction(method, this) as Mono
-		runBlocking {
-			Assertions.assertThat(mono.awaitSingleOrNull()).isNull()
-		}
+		Assertions.assertThat(mono.awaitSingleOrNull()).isNull()
 	}
 
 	@Test
-	fun invokeSuspendingFunctionWithValueClassParameter() {
+	suspend fun invokeSuspendingFunctionWithValueClassParameter() {
 		val method = CoroutinesUtilsTests::class.java.declaredMethods.first { it.name.startsWith("suspendingFunctionWithValueClassParameter") }
 		val mono = CoroutinesUtils.invokeSuspendingFunction(method, this, "foo", null) as Mono
-		runBlocking {
-			Assertions.assertThat(mono.awaitSingle()).isEqualTo("foo")
-		}
+		Assertions.assertThat(mono.awaitSingle()).isEqualTo("foo")
 	}
 
 	@Test
-	fun invokeSuspendingFunctionWithNestedValueClassParameter() {
+	suspend fun invokeSuspendingFunctionWithNestedValueClassParameter() {
 		val method = CoroutinesUtilsTests::class.java.declaredMethods.first { it.name.startsWith("suspendingFunctionWithNestedValueClassParameter") }
 		val mono = CoroutinesUtils.invokeSuspendingFunction(method, this, "foo", null) as Mono
-		runBlocking {
-			Assertions.assertThat(mono.awaitSingle()).isEqualTo("foo")
-		}
+		Assertions.assertThat(mono.awaitSingle()).isEqualTo("foo")
 	}
 
 	@Test
-	fun invokeSuspendingFunctionWithValueClassReturnValue() {
+	suspend fun invokeSuspendingFunctionWithValueClassReturnValue() {
 		val method = CoroutinesUtilsTests::class.java.declaredMethods.first { it.name.startsWith("suspendingFunctionWithValueClassReturnValue") }
 		val mono = CoroutinesUtils.invokeSuspendingFunction(method, this, null) as Mono
-		runBlocking {
-			Assertions.assertThat(mono.awaitSingle()).isEqualTo(ValueClass("foo"))
-		}
+		Assertions.assertThat(mono.awaitSingle()).isEqualTo(ValueClass("foo"))
 	}
 
 	@Test
-	fun invokeSuspendingFunctionWithResultOfUnitReturnValue() {
+	suspend fun invokeSuspendingFunctionWithResultOfUnitReturnValue() {
 		val method = CoroutinesUtilsTests::class.java.declaredMethods.first { it.name.startsWith("suspendingFunctionWithResultOfUnitReturnValue") }
 		val mono = CoroutinesUtils.invokeSuspendingFunction(method, this, null) as Mono
-		runBlocking {
-			Assertions.assertThat(mono.awaitSingle()).isEqualTo(Result.success(Unit))
-		}
+		Assertions.assertThat(mono.awaitSingle()).isEqualTo(Result.success(Unit))
 	}
 
 	@Test
@@ -246,51 +230,41 @@ class CoroutinesUtilsTests {
 	}
 
 	@Test
-	fun invokeSuspendingFunctionWithNullableValueClassParameter() {
+	suspend fun invokeSuspendingFunctionWithNullableValueClassParameter() {
 		val method = CoroutinesUtilsTests::class.java.declaredMethods.first { it.name.startsWith("suspendingFunctionWithNullableValueClass") }
 		val mono = CoroutinesUtils.invokeSuspendingFunction(method, this, null, null) as Mono
-		runBlocking {
-			Assertions.assertThat(mono.awaitSingleOrNull()).isNull()
-		}
+		Assertions.assertThat(mono.awaitSingleOrNull()).isNull()
 	}
 
 	@Test
-	fun invokeSuspendingFunctionWithValueClassWithPrivateConstructorParameter() {
+	suspend fun invokeSuspendingFunctionWithValueClassWithPrivateConstructorParameter() {
 		val method = CoroutinesUtilsTests::class.java.declaredMethods.first { it.name.startsWith("suspendingFunctionWithValueClassWithPrivateConstructor") }
 		val mono = CoroutinesUtils.invokeSuspendingFunction(method, this, "foo", null) as Mono
-		runBlocking {
-			Assertions.assertThat(mono.awaitSingleOrNull()).isEqualTo("foo")
-		}
+		Assertions.assertThat(mono.awaitSingleOrNull()).isEqualTo("foo")
 	}
 
 	@Test
-	fun invokeSuspendingFunctionWithExtension() {
+	suspend fun invokeSuspendingFunctionWithExtension() {
 		val method = CoroutinesUtilsTests::class.java.getDeclaredMethod("suspendingFunctionWithExtension",
 			CustomException::class.java, Continuation::class.java)
 		val mono = CoroutinesUtils.invokeSuspendingFunction(method, this, CustomException("foo")) as Mono
-		runBlocking {
-			Assertions.assertThat(mono.awaitSingleOrNull()).isEqualTo("foo")
-		}
+		Assertions.assertThat(mono.awaitSingleOrNull()).isEqualTo("foo")
 	}
 
 	@Test
-	fun invokeSuspendingFunctionWithExtensionAndParameter() {
+	suspend fun invokeSuspendingFunctionWithExtensionAndParameter() {
 		val method = CoroutinesUtilsTests::class.java.getDeclaredMethod("suspendingFunctionWithExtensionAndParameter",
 			CustomException::class.java, Int::class.java, Continuation::class.java)
 		val mono = CoroutinesUtils.invokeSuspendingFunction(method, this, CustomException("foo"), 20) as Mono
-		runBlocking {
-			Assertions.assertThat(mono.awaitSingleOrNull()).isEqualTo("foo-20")
-		}
+		Assertions.assertThat(mono.awaitSingleOrNull()).isEqualTo("foo-20")
 	}
 
 	@Test
-	fun invokeSuspendingFunctionWithGenericParameter() {
+	suspend fun invokeSuspendingFunctionWithGenericParameter() {
 		val method = GenericController::class.java.declaredMethods.first { it.name.startsWith("handle") }
 		val horse = Animal("horse")
 		val mono = CoroutinesUtils.invokeSuspendingFunction(method, AnimalController(), horse, null) as Mono
-		runBlocking {
-			Assertions.assertThat(mono.awaitSingle()).isEqualTo(horse.name)
-		}
+		Assertions.assertThat(mono.awaitSingle()).isEqualTo(horse.name)
 	}
 
 	@Test
diff --git a/spring-core/src/test/kotlin/org/springframework/core/ReactiveAdapterRegistryKotlinTests.kt b/spring-core/src/test/kotlin/org/springframework/core/ReactiveAdapterRegistryKotlinTests.kt
index c1fbbb21c65..817fecbed5b 100644
--- a/spring-core/src/test/kotlin/org/springframework/core/ReactiveAdapterRegistryKotlinTests.kt
+++ b/spring-core/src/test/kotlin/org/springframework/core/ReactiveAdapterRegistryKotlinTests.kt
@@ -23,7 +23,6 @@ import kotlinx.coroutines.async
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.flow.toList
-import kotlinx.coroutines.runBlocking
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.Test
 import org.reactivestreams.Publisher
@@ -52,11 +51,11 @@ class ReactiveAdapterRegistryKotlinTests {
 	}
 
 	@Test
-	fun publisherToDeferred() {
+	suspend fun publisherToDeferred() {
 		val source = Mono.just(1)
 		val target = getAdapter(Deferred::class).fromPublisher(source)
 		assertThat(target).isInstanceOf(Deferred::class.java)
-		assertThat(runBlocking { (target as Deferred<*>).await() }).isEqualTo(1)
+		assertThat((target as Deferred<*>).await()).isEqualTo(1)
 	}
 
 	@Test
@@ -76,11 +75,11 @@ class ReactiveAdapterRegistryKotlinTests {
 	}
 
 	@Test
-	fun publisherToFlow() {
+	suspend fun publisherToFlow() {
 		val source = Flux.just(1, 2, 3)
 		val target = getAdapter(Flow::class).fromPublisher(source)
 		assertThat(target).isInstanceOf(Flow::class.java)
-		assertThat(runBlocking { (target as Flow<*>).toList() }).contains(1, 2, 3)
+		assertThat((target as Flow<*>).toList()).contains(1, 2, 3)
 	}
 
 	private fun getAdapter(reactiveType: KClass<*>): ReactiveAdapter {
diff --git a/spring-messaging/src/test/kotlin/org/springframework/messaging/rsocket/RSocketRequesterExtensionsTests.kt b/spring-messaging/src/test/kotlin/org/springframework/messaging/rsocket/RSocketRequesterExtensionsTests.kt
index 98988805b98..49940f57044 100644
--- a/spring-messaging/src/test/kotlin/org/springframework/messaging/rsocket/RSocketRequesterExtensionsTests.kt
+++ b/spring-messaging/src/test/kotlin/org/springframework/messaging/rsocket/RSocketRequesterExtensionsTests.kt
@@ -20,7 +20,6 @@ import io.mockk.every
 import io.mockk.mockk
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.toList
-import kotlinx.coroutines.runBlocking
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.Test
 import org.reactivestreams.Publisher
@@ -40,36 +39,30 @@ class RSocketRequesterExtensionsTests {
 
 	@Test
 	@Suppress("DEPRECATION")
-	fun connectAndAwait() {
+	suspend fun connectAndAwait() {
 		val requester = mockk<RSocketRequester>()
 		val builder = mockk<RSocketRequester.Builder>()
 		every { builder.connect(any()) } returns Mono.just(requester)
-		runBlocking {
-			assertThat(builder.connectAndAwait(mockk())).isEqualTo(requester)
-		}
+		assertThat(builder.connectAndAwait(mockk())).isEqualTo(requester)
 	}
 
 	@Test
 	@Suppress("DEPRECATION")
-	fun connectTcpAndAwait() {
+	suspend fun connectTcpAndAwait() {
 		val host = "127.0.0.1"
 		val requester = mockk<RSocketRequester>()
 		val builder = mockk<RSocketRequester.Builder>()
 		every { builder.connectTcp(host, any()) } returns Mono.just(requester)
-		runBlocking {
-			assertThat(builder.connectTcpAndAwait(host, 0)).isEqualTo(requester)
-		}
+		assertThat(builder.connectTcpAndAwait(host, 0)).isEqualTo(requester)
 	}
 
 	@Test
 	@Suppress("DEPRECATION")
-	fun connectWebSocketAndAwait() {
+	suspend fun connectWebSocketAndAwait() {
 		val requester = mockk<RSocketRequester>()
 		val builder = mockk<RSocketRequester.Builder>()
 		every { builder.connectWebSocket(any()) } returns Mono.just(requester)
-		runBlocking {
-			assertThat(builder.connectWebSocketAndAwait(mockk())).isEqualTo(requester)
-		}
+		assertThat(builder.connectWebSocketAndAwait(mockk())).isEqualTo(requester)
 	}
 
 	@Test
@@ -104,57 +97,45 @@ class RSocketRequesterExtensionsTests {
 	}
 
 	@Test
-	fun sendAndAwait() {
+	suspend fun sendAndAwait() {
 		val retrieveSpec = mockk<RSocketRequester.RetrieveSpec>()
 		every { retrieveSpec.send() } returns Mono.empty()
-		runBlocking {
-			retrieveSpec.sendAndAwait()
-		}
+		retrieveSpec.sendAndAwait()
 	}
 
 	@Test
-	fun retrieveAndAwait() {
+	suspend fun retrieveAndAwait() {
 		val response = "foo"
 		val retrieveSpec = mockk<RSocketRequester.RetrieveSpec>()
 		every { retrieveSpec.retrieveMono(match<ParameterizedTypeReference<*>>(stringTypeRefMatcher)) } returns Mono.just("foo")
-		runBlocking {
-			assertThat(retrieveSpec.retrieveAndAwait<String>()).isEqualTo(response)
-		}
+		assertThat(retrieveSpec.retrieveAndAwait<String>()).isEqualTo(response)
 	}
 
 	@Test
-	fun retrieveAndAwaitOrNull() {
+	suspend fun retrieveAndAwaitOrNull() {
 		val retrieveSpec = mockk<RSocketRequester.RetrieveSpec>()
 		every { retrieveSpec.retrieveMono(match<ParameterizedTypeReference<*>>(stringTypeRefMatcher)) } returns Mono.empty()
-		runBlocking {
-			assertThat(retrieveSpec.retrieveAndAwaitOrNull<String>()).isNull()
-		}
+		assertThat(retrieveSpec.retrieveAndAwaitOrNull<String>()).isNull()
 	}
 
 	@Test
-	fun retrieveFlow() {
+	suspend fun retrieveFlow() {
 		val retrieveSpec = mockk<RSocketRequester.RetrieveSpec>()
 		every { retrieveSpec.retrieveFlux(match<ParameterizedTypeReference<*>>(stringTypeRefMatcher)) } returns Flux.just("foo", "bar")
-		runBlocking {
-			assertThat(retrieveSpec.retrieveFlow<String>().toList()).contains("foo", "bar")
-		}
+		assertThat(retrieveSpec.retrieveFlow<String>().toList()).contains("foo", "bar")
 	}
 
 	@Test
 	fun retrieveMono() {
 		val retrieveSpec = mockk<RSocketRequester.RetrieveSpec>()
 		every { retrieveSpec.retrieveMono(match<ParameterizedTypeReference<*>>(stringTypeRefMatcher)) } returns Mono.just("foo")
-		runBlocking {
-			assertThat(retrieveSpec.retrieveMono<String>().block()).isEqualTo("foo")
-		}
+		assertThat(retrieveSpec.retrieveMono<String>().block()).isEqualTo("foo")
 	}
 
 	@Test
 	fun retrieveFlux() {
 		val retrieveSpec = mockk<RSocketRequester.RetrieveSpec>()
 		every { retrieveSpec.retrieveFlux(match<ParameterizedTypeReference<*>>(stringTypeRefMatcher)) } returns Flux.just("foo", "bar")
-		runBlocking {
-			assertThat(retrieveSpec.retrieveFlux<String>().collectList().block()).contains("foo", "bar")
-		}
+		assertThat(retrieveSpec.retrieveFlux<String>().collectList().block()).contains("foo", "bar")
 	}
 }
diff --git a/spring-messaging/src/test/kotlin/org/springframework/messaging/rsocket/service/RSocketServiceMethodKotlinTests.kt b/spring-messaging/src/test/kotlin/org/springframework/messaging/rsocket/service/RSocketServiceMethodKotlinTests.kt
index 075906b3fff..11cde445c14 100644
--- a/spring-messaging/src/test/kotlin/org/springframework/messaging/rsocket/service/RSocketServiceMethodKotlinTests.kt
+++ b/spring-messaging/src/test/kotlin/org/springframework/messaging/rsocket/service/RSocketServiceMethodKotlinTests.kt
@@ -22,7 +22,6 @@ import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.toList
 import kotlinx.coroutines.reactive.asFlow
-import kotlinx.coroutines.runBlocking
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
@@ -53,7 +52,7 @@ class RSocketServiceMethodKotlinTests {
 	}
 
 	@Test
-	fun fireAndForget(): Unit = runBlocking {
+	suspend fun fireAndForget() {
 		val service = proxyFactory.createClient(SuspendingFunctionsService::class.java)
 
 		val requestPayload = "request"
@@ -65,7 +64,7 @@ class RSocketServiceMethodKotlinTests {
 	}
 
 	@Test
-	fun requestResponse(): Unit = runBlocking {
+	suspend fun requestResponse() {
 		val service = proxyFactory.createClient(SuspendingFunctionsService::class.java)
 
 		val requestPayload = "request"
@@ -80,7 +79,7 @@ class RSocketServiceMethodKotlinTests {
 	}
 
 	@Test
-	fun requestStream(): Unit = runBlocking {
+	suspend fun requestStream() {
 		val service = proxyFactory.createClient(SuspendingFunctionsService::class.java)
 
 		val requestPayload = "request"
@@ -97,7 +96,7 @@ class RSocketServiceMethodKotlinTests {
 	}
 
 	@Test
-	fun nonSuspendingRequestStream(): Unit = runBlocking {
+	suspend fun nonSuspendingRequestStream() {
 		val service = proxyFactory.createClient(NonSuspendingFunctionsService::class.java)
 
 		val requestPayload = "request"
@@ -114,7 +113,7 @@ class RSocketServiceMethodKotlinTests {
 	}
 
 	@Test
-	fun requestChannel(): Unit = runBlocking {
+	suspend fun requestChannel() {
 		val service = proxyFactory.createClient(SuspendingFunctionsService::class.java)
 
 		val requestPayload1 = "request1"
diff --git a/spring-r2dbc/src/test/kotlin/org/springframework/r2dbc/core/DatabaseClientExtensionsTests.kt b/spring-r2dbc/src/test/kotlin/org/springframework/r2dbc/core/DatabaseClientExtensionsTests.kt
index cb38307f378..62c4839fe12 100644
--- a/spring-r2dbc/src/test/kotlin/org/springframework/r2dbc/core/DatabaseClientExtensionsTests.kt
+++ b/spring-r2dbc/src/test/kotlin/org/springframework/r2dbc/core/DatabaseClientExtensionsTests.kt
@@ -20,7 +20,6 @@ import io.mockk.every
 import io.mockk.mockk
 import io.mockk.verify
 import io.r2dbc.spi.Parameters
-import kotlinx.coroutines.runBlocking
 import org.junit.jupiter.api.Test
 import reactor.core.publisher.Mono
 
@@ -37,11 +36,7 @@ class DatabaseClientExtensionsTests {
 	fun bindByIndexShouldBindValue() {
 		val spec = mockk<DatabaseClient.GenericExecuteSpec>()
 		every { spec.bind(eq(0), any()) } returns spec
-
-		runBlocking {
-			spec.bind<String>(0, "foo")
-		}
-
+		spec.bind<String>(0, "foo")
 		verify {
 			spec.bind(0, Parameters.`in`("foo"))
 		}
@@ -51,11 +46,7 @@ class DatabaseClientExtensionsTests {
 	fun bindByIndexShouldBindNull() {
 		val spec = mockk<DatabaseClient.GenericExecuteSpec>()
 		every { spec.bind(eq(0), any()) } returns spec
-
-		runBlocking {
-			spec.bind<String>(0, null)
-		}
-
+		spec.bind<String>(0, null)
 		verify {
 			spec.bind(0, Parameters.`in`(String::class.java))
 		}
@@ -65,11 +56,7 @@ class DatabaseClientExtensionsTests {
 	fun bindByNameShouldBindValue() {
 		val spec = mockk<DatabaseClient.GenericExecuteSpec>()
 		every { spec.bind(eq("field"), any()) } returns spec
-
-		runBlocking {
-			spec.bind<String>("field", "foo")
-		}
-
+		spec.bind<String>("field", "foo")
 		verify {
 			spec.bind("field", Parameters.`in`("foo"))
 		}
@@ -79,25 +66,17 @@ class DatabaseClientExtensionsTests {
 	fun bindByNameShouldBindNull() {
 		val spec = mockk<DatabaseClient.GenericExecuteSpec>()
 		every { spec.bind(eq("field"), any()) } returns spec
-
-		runBlocking {
-			spec.bind<String>("field", null)
-		}
-
+		spec.bind<String>("field", null)
 		verify {
 			spec.bind("field", Parameters.`in`(String::class.java))
 		}
 	}
 
 	@Test
-	fun genericExecuteSpecAwait() {
+	suspend fun genericExecuteSpecAwait() {
 		val spec = mockk<DatabaseClient.GenericExecuteSpec>()
 		every { spec.then() } returns Mono.empty()
-
-		runBlocking {
-			spec.await()
-		}
-
+		spec.await()
 		verify {
 			spec.then()
 		}
diff --git a/spring-r2dbc/src/test/kotlin/org/springframework/r2dbc/core/RowsFetchSpecExtensionsTests.kt b/spring-r2dbc/src/test/kotlin/org/springframework/r2dbc/core/RowsFetchSpecExtensionsTests.kt
index c18fd38ac12..100bb718b4c 100644
--- a/spring-r2dbc/src/test/kotlin/org/springframework/r2dbc/core/RowsFetchSpecExtensionsTests.kt
+++ b/spring-r2dbc/src/test/kotlin/org/springframework/r2dbc/core/RowsFetchSpecExtensionsTests.kt
@@ -37,14 +37,10 @@ import reactor.core.publisher.Mono
 class RowsFetchSpecExtensionsTests {
 
 	@Test
-	fun awaitOneWithValue() {
+	suspend fun awaitOneWithValue() {
 		val spec = mockk<RowsFetchSpec<String>>()
 		every { spec.one() } returns Mono.just("foo")
-
-		runBlocking {
-			assertThat(spec.awaitOne()).isEqualTo("foo")
-		}
-
+		assertThat(spec.awaitOne()).isEqualTo("foo")
 		verify {
 			spec.one()
 		}
@@ -54,53 +50,39 @@ class RowsFetchSpecExtensionsTests {
 	fun awaitOneWithNull() {
 		val spec = mockk<RowsFetchSpec<String>>()
 		every { spec.one() } returns Mono.empty()
-
 		assertThatExceptionOfType(EmptyResultDataAccessException::class.java).isThrownBy {
 			runBlocking { spec.awaitOne() }
 		}
-
 		verify {
 			spec.one()
 		}
 	}
 
 	@Test
-	fun awaitOneOrNullWithValue() {
+	suspend fun awaitOneOrNullWithValue() {
 		val spec = mockk<RowsFetchSpec<String>>()
 		every { spec.one() } returns Mono.just("foo")
-
-		runBlocking {
-			assertThat(spec.awaitOneOrNull()).isEqualTo("foo")
-		}
-
+		assertThat(spec.awaitOneOrNull()).isEqualTo("foo")
 		verify {
 			spec.one()
 		}
 	}
 
 	@Test
-	fun awaitOneOrNullWithNull() {
+	suspend fun awaitOneOrNullWithNull() {
 		val spec = mockk<RowsFetchSpec<String>>()
 		every { spec.one() } returns Mono.empty()
-
-		runBlocking {
-			assertThat(spec.awaitOneOrNull()).isNull()
-		}
-
+		assertThat(spec.awaitOneOrNull()).isNull()
 		verify {
 			spec.one()
 		}
 	}
 
 	@Test
-	fun awaitFirstWithValue() {
+	suspend fun awaitFirstWithValue() {
 		val spec = mockk<RowsFetchSpec<String>>()
 		every { spec.first() } returns Mono.just("foo")
-
-		runBlocking {
-			assertThat(spec.awaitSingle()).isEqualTo("foo")
-		}
-
+		assertThat(spec.awaitSingle()).isEqualTo("foo")
 		verify {
 			spec.first()
 		}
@@ -110,39 +92,29 @@ class RowsFetchSpecExtensionsTests {
 	fun awaitFirstWithNull() {
 		val spec = mockk<RowsFetchSpec<String>>()
 		every { spec.first() } returns Mono.empty()
-
 		assertThatExceptionOfType(EmptyResultDataAccessException::class.java).isThrownBy {
 			runBlocking { spec.awaitSingle() }
 		}
-
 		verify {
 			spec.first()
 		}
 	}
 
 	@Test
-	fun awaitSingleOrNullWithValue() {
+	suspend fun awaitSingleOrNullWithValue() {
 		val spec = mockk<RowsFetchSpec<String>>()
 		every { spec.first() } returns Mono.just("foo")
-
-		runBlocking {
-			assertThat(spec.awaitSingleOrNull()).isEqualTo("foo")
-		}
-
+		assertThat(spec.awaitSingleOrNull()).isEqualTo("foo")
 		verify {
 			spec.first()
 		}
 	}
 
 	@Test
-	fun awaitSingleOrNullWithNull() {
+	suspend fun awaitSingleOrNullWithNull() {
 		val spec = mockk<RowsFetchSpec<String>>()
 		every { spec.first() } returns Mono.empty()
-
-		runBlocking {
-			assertThat(spec.awaitSingleOrNull()).isNull()
-		}
-
+		assertThat(spec.awaitSingleOrNull()).isNull()
 		verify {
 			spec.first()
 		}
@@ -150,14 +122,10 @@ class RowsFetchSpecExtensionsTests {
 
 	@Test
 	@ExperimentalCoroutinesApi
-	fun allAsFlow() {
+	suspend fun allAsFlow() {
 		val spec = mockk<RowsFetchSpec<String>>()
 		every { spec.all() } returns Flux.just("foo", "bar", "baz")
-
-		runBlocking {
-			assertThat(spec.flow().toList()).contains("foo", "bar", "baz")
-		}
-
+		assertThat(spec.flow().toList()).contains("foo", "bar", "baz")
 		verify {
 			spec.all()
 		}
diff --git a/spring-r2dbc/src/test/kotlin/org/springframework/r2dbc/core/UpdatedRowsFetchSpecExtensionsTests.kt b/spring-r2dbc/src/test/kotlin/org/springframework/r2dbc/core/UpdatedRowsFetchSpecExtensionsTests.kt
index 52f0cae7f6d..e91990d19a0 100644
--- a/spring-r2dbc/src/test/kotlin/org/springframework/r2dbc/core/UpdatedRowsFetchSpecExtensionsTests.kt
+++ b/spring-r2dbc/src/test/kotlin/org/springframework/r2dbc/core/UpdatedRowsFetchSpecExtensionsTests.kt
@@ -19,7 +19,6 @@ package org.springframework.r2dbc.core
 import io.mockk.every
 import io.mockk.mockk
 import io.mockk.verify
-import kotlinx.coroutines.runBlocking
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.Test
 import reactor.core.publisher.Mono
@@ -32,14 +31,10 @@ import reactor.core.publisher.Mono
 class UpdatedRowsFetchSpecExtensionsTests {
 
 	@Test
-	fun awaitRowsUpdatedWithValue() {
+	suspend fun awaitRowsUpdatedWithValue() {
 		val spec = mockk<UpdatedRowsFetchSpec>()
 		every { spec.rowsUpdated() } returns Mono.just(42)
-
-		runBlocking {
-			assertThat(spec.awaitRowsUpdated()).isEqualTo(42)
-		}
-
+		assertThat(spec.awaitRowsUpdated()).isEqualTo(42)
 		verify {
 			spec.rowsUpdated()
 		}
diff --git a/spring-tx/src/test/kotlin/org/springframework/transaction/annotation/CoroutinesAnnotationTransactionInterceptorTests.kt b/spring-tx/src/test/kotlin/org/springframework/transaction/annotation/CoroutinesAnnotationTransactionInterceptorTests.kt
index 4a9b5611339..53b41b9f6a5 100644
--- a/spring-tx/src/test/kotlin/org/springframework/transaction/annotation/CoroutinesAnnotationTransactionInterceptorTests.kt
+++ b/spring-tx/src/test/kotlin/org/springframework/transaction/annotation/CoroutinesAnnotationTransactionInterceptorTests.kt
@@ -42,14 +42,12 @@ class CoroutinesAnnotationTransactionInterceptorTests {
 	private val source = AnnotationTransactionAttributeSource()
 
 	@Test
-	fun suspendingNoValueSuccess() {
+	suspend fun suspendingNoValueSuccess() {
 		val proxyFactory = ProxyFactory()
 		proxyFactory.setTarget(TestWithCoroutines())
 		proxyFactory.addAdvice(TransactionInterceptor(rtm, source))
 		val proxy = proxyFactory.proxy as TestWithCoroutines
-		runBlocking {
-			proxy.suspendingNoValueSuccess()
-		}
+		proxy.suspendingNoValueSuccess()
 		assertReactiveGetTransactionAndCommitCount(1)
 	}
 
@@ -68,14 +66,12 @@ class CoroutinesAnnotationTransactionInterceptorTests {
 	}
 
 	@Test
-	fun suspendingValueSuccess() {
+	suspend fun suspendingValueSuccess() {
 		val proxyFactory = ProxyFactory()
 		proxyFactory.setTarget(TestWithCoroutines())
 		proxyFactory.addAdvice(TransactionInterceptor(rtm, source))
 		val proxy = proxyFactory.proxy as TestWithCoroutines
-		runBlocking {
-			assertThat(proxy.suspendingValueSuccess()).isEqualTo("foo")
-		}
+		assertThat(proxy.suspendingValueSuccess()).isEqualTo("foo")
 		assertReactiveGetTransactionAndCommitCount(1)
 	}
 
@@ -94,39 +90,33 @@ class CoroutinesAnnotationTransactionInterceptorTests {
 	}
 
 	@Test
-	fun suspendingFlowSuccess() {
+	suspend fun suspendingFlowSuccess() {
 		val proxyFactory = ProxyFactory()
 		proxyFactory.setTarget(TestWithCoroutines())
 		proxyFactory.addAdvice(TransactionInterceptor(rtm, source))
 		val proxy = proxyFactory.proxy as TestWithCoroutines
-		runBlocking {
-			assertThat(proxy.suspendingFlowSuccess().toList()).containsExactly("foo", "foo")
-		}
+		assertThat(proxy.suspendingFlowSuccess().toList()).containsExactly("foo", "foo")
 		assertReactiveGetTransactionAndCommitCount(1)
 	}
 
 	@Test
-	fun flowSuccess() {
+	suspend fun flowSuccess() {
 		val proxyFactory = ProxyFactory()
 		proxyFactory.setTarget(TestWithCoroutines())
 		proxyFactory.addAdvice(TransactionInterceptor(rtm, source))
 		val proxy = proxyFactory.proxy as TestWithCoroutines
-		runBlocking {
-			assertThat(proxy.flowSuccess().toList()).containsExactly("foo", "foo")
-		}
+		assertThat(proxy.flowSuccess().toList()).containsExactly("foo", "foo")
 		assertReactiveGetTransactionAndCommitCount(1)
 	}
 
 	@Test
-	fun suspendingValueSuccessWithContext() {
+	suspend fun suspendingValueSuccessWithContext() {
 		val proxyFactory = ProxyFactory()
 		proxyFactory.setTarget(TestWithCoroutines())
 		proxyFactory.addAdvice(TransactionInterceptor(rtm, source))
 		val proxy = proxyFactory.proxy as TestWithCoroutines
-		assertThat(runBlocking {
-			withExampleContext("context") {
-				proxy.suspendingValueSuccessWithContext()
-			}
+		assertThat(withExampleContext("context") {
+			proxy.suspendingValueSuccessWithContext()
 		}).isEqualTo("context")
 		assertReactiveGetTransactionAndCommitCount(1)
 	}
diff --git a/spring-tx/src/test/kotlin/org/springframework/transaction/interceptor/AbstractCoroutinesTransactionAspectTests.kt b/spring-tx/src/test/kotlin/org/springframework/transaction/interceptor/AbstractCoroutinesTransactionAspectTests.kt
index a418692ae8b..79986b79068 100644
--- a/spring-tx/src/test/kotlin/org/springframework/transaction/interceptor/AbstractCoroutinesTransactionAspectTests.kt
+++ b/spring-tx/src/test/kotlin/org/springframework/transaction/interceptor/AbstractCoroutinesTransactionAspectTests.kt
@@ -19,6 +19,7 @@ package org.springframework.transaction.interceptor
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.runBlocking
 import org.assertj.core.api.Assertions.assertThat
+import org.assertj.core.api.Assertions.assertThatExceptionOfType
 import org.assertj.core.api.Fail
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
@@ -53,7 +54,7 @@ abstract class AbstractCoroutinesTransactionAspectTests {
 	}
 
 	@Test
-	fun noTransaction() {
+	suspend fun noTransaction() {
 		val rtm = Mockito.mock(ReactiveTransactionManager::class.java)
 		val tb = DefaultTestBean()
 		val tas: TransactionAttributeSource = MapTransactionAttributeSource()
@@ -63,9 +64,7 @@ abstract class AbstractCoroutinesTransactionAspectTests {
 		// and transaction attribute source
 		val itb = advised(tb, rtm, tas) as TestBean
 		checkReactiveTransaction(false)
-		runBlocking {
-			itb.getName()
-		}
+		itb.getName()
 		checkReactiveTransaction(false)
 
 		// expect no calls
@@ -76,7 +75,7 @@ abstract class AbstractCoroutinesTransactionAspectTests {
 	 * Check that a transaction is created and committed.
 	 */
 	@Test
-	fun transactionShouldSucceed() {
+	suspend fun transactionShouldSucceed() {
 		val txatt: TransactionAttribute = DefaultTransactionAttribute()
 		val tas = MapTransactionAttributeSource()
 		tas.register(getNameMethod!!, txatt)
@@ -87,9 +86,7 @@ abstract class AbstractCoroutinesTransactionAspectTests {
 		given(rtm.commit(status)).willReturn(Mono.empty())
 		val tb = DefaultTestBean()
 		val itb = advised(tb, rtm, tas) as TestBean
-		runBlocking {
-			itb.getName()
-		}
+		itb.getName()
 		Mockito.verify(rtm).commit(status)
 	}
 
@@ -97,7 +94,7 @@ abstract class AbstractCoroutinesTransactionAspectTests {
 	 * Check that two transactions are created and committed.
 	 */
 	@Test
-	fun twoTransactionsShouldSucceed() {
+	suspend fun twoTransactionsShouldSucceed() {
 		val txatt: TransactionAttribute = DefaultTransactionAttribute()
 		val tas1 = MapTransactionAttributeSource()
 		tas1.register(getNameMethod!!, txatt)
@@ -110,10 +107,8 @@ abstract class AbstractCoroutinesTransactionAspectTests {
 		given(rtm.commit(status)).willReturn(Mono.empty())
 		val tb = DefaultTestBean()
 		val itb = advised(tb, rtm, arrayOf(tas1, tas2)) as TestBean
-		runBlocking {
-			itb.getName()
-			itb.setName("myName")
-		}
+		itb.getName()
+		itb.setName("myName")
 		Mockito.verify(rtm, Mockito.times(2)).commit(status)
 	}
 
@@ -121,7 +116,7 @@ abstract class AbstractCoroutinesTransactionAspectTests {
 	 * Check that a transaction is created and committed.
 	 */
 	@Test
-	fun transactionShouldSucceedWithNotNew() {
+	suspend fun transactionShouldSucceedWithNotNew() {
 		val txatt: TransactionAttribute = DefaultTransactionAttribute()
 		val tas = MapTransactionAttributeSource()
 		tas.register(getNameMethod!!, txatt)
@@ -132,9 +127,7 @@ abstract class AbstractCoroutinesTransactionAspectTests {
 		given(rtm.commit(status)).willReturn(Mono.empty())
 		val tb = DefaultTestBean()
 		val itb = advised(tb, rtm, tas) as TestBean
-		runBlocking {
-			itb.getName()
-		}
+		itb.getName()
 		Mockito.verify(rtm).commit(status)
 	}
 
@@ -254,14 +247,8 @@ abstract class AbstractCoroutinesTransactionAspectTests {
 			}
 		}
 		val itb = advised(tb, rtm, tas) as TestBean
-		runBlocking {
-			try {
-				itb.getName()
-			}
-			catch (actual: Exception) {
-				assertThat(actual).isInstanceOf(CannotCreateTransactionException::class.java)
-			}
-		}
+		assertThatExceptionOfType(CannotCreateTransactionException::class.java)
+			.isThrownBy { runBlocking { itb.getName() } }
 	}
 
 	/**
@@ -270,7 +257,7 @@ abstract class AbstractCoroutinesTransactionAspectTests {
 	 * infrastructure exception was thrown to the client
 	 */
 	@Test
-	fun cannotCommitTransaction() {
+	suspend fun cannotCommitTransaction() {
 		val txatt: TransactionAttribute = DefaultTransactionAttribute()
 		val m = setNameMethod
 		val tas = MapTransactionAttributeSource()
@@ -286,17 +273,15 @@ abstract class AbstractCoroutinesTransactionAspectTests {
 		val tb = DefaultTestBean()
 		val itb = advised(tb, rtm, tas) as TestBean
 		val name = "new name"
-		runBlocking {
-			try {
-				itb.setName(name)
-			}
-			catch (actual: Exception) {
-				assertThat(actual).isInstanceOf(ex.javaClass)
-				assertThat(actual).hasMessage(ex.message)
-			}
-			// Should have invoked target and changed name
-			assertThat(itb.getName()).isEqualTo(name)
+		try {
+			itb.setName(name)
+		}
+		catch (actual: Exception) {
+			assertThat(actual).isInstanceOf(ex.javaClass)
+			assertThat(actual).hasMessage(ex.message)
 		}
+		// Should have invoked target and changed name
+		assertThat(itb.getName()).isEqualTo(name)
 	}
 
 	private fun checkReactiveTransaction(expected: Boolean) {
diff --git a/spring-tx/src/test/kotlin/org/springframework/transaction/reactive/TransactionalOperatorExtensionsTests.kt b/spring-tx/src/test/kotlin/org/springframework/transaction/reactive/TransactionalOperatorExtensionsTests.kt
index ff0680825a6..a07d368262d 100644
--- a/spring-tx/src/test/kotlin/org/springframework/transaction/reactive/TransactionalOperatorExtensionsTests.kt
+++ b/spring-tx/src/test/kotlin/org/springframework/transaction/reactive/TransactionalOperatorExtensionsTests.kt
@@ -22,6 +22,7 @@ import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.flow.toList
 import kotlinx.coroutines.runBlocking
 import org.assertj.core.api.Assertions.assertThat
+import org.assertj.core.api.Assertions.assertThatIllegalStateException
 import org.junit.jupiter.api.Test
 import org.springframework.transaction.support.DefaultTransactionDefinition
 import kotlin.coroutines.AbstractCoroutineContextElement
@@ -33,13 +34,11 @@ class TransactionalOperatorExtensionsTests {
 
 	@Test
 	@Suppress("UNUSED_VARIABLE")
-	fun commitWithSuspendingFunction() {
+	suspend fun commitWithSuspendingFunction() {
 		val operator = TransactionalOperator.create(tm, DefaultTransactionDefinition())
-		runBlocking {
-			val returnValue: Boolean = operator.executeAndAwait {
-				delay(1)
-				true
-			}
+		val returnValue: Boolean = operator.executeAndAwait {
+			delay(1)
+			true
 		}
 		assertThat(tm.commit).isTrue()
 		assertThat(tm.rollback).isFalse()
@@ -47,13 +46,11 @@ class TransactionalOperatorExtensionsTests {
 
 	@Test
 	@Suppress("UNUSED_VARIABLE")
-	fun commitWithEmptySuspendingFunction() {
+	suspend fun commitWithEmptySuspendingFunction() {
 		val operator = TransactionalOperator.create(tm, DefaultTransactionDefinition())
-		runBlocking {
-			val returnValue: Boolean? = operator.executeAndAwait {
-				delay(1)
-				null
-			}
+		val returnValue: Boolean? = operator.executeAndAwait {
+			delay(1)
+			null
 		}
 		assertThat(tm.commit).isTrue()
 		assertThat(tm.rollback).isFalse()
@@ -62,22 +59,20 @@ class TransactionalOperatorExtensionsTests {
 	@Test
 	fun rollbackWithSuspendingFunction() {
 		val operator = TransactionalOperator.create(tm, DefaultTransactionDefinition())
-		runBlocking {
-			try {
+		assertThatIllegalStateException().isThrownBy {
+			runBlocking {
 				operator.executeAndAwait {
 					delay(1)
 					throw IllegalStateException()
 				}
-			} catch (ex: IllegalStateException) {
-				assertThat(tm.commit).isFalse()
-				assertThat(tm.rollback).isTrue()
-				return@runBlocking
 			}
 		}
+		assertThat(tm.commit).isFalse()
+		assertThat(tm.rollback).isTrue()
 	}
 
 	@Test
-	fun commitWithFlow() {
+	suspend fun commitWithFlow() {
 		val operator = TransactionalOperator.create(tm, DefaultTransactionDefinition())
 		val flow = flow {
 			emit(1)
@@ -85,10 +80,8 @@ class TransactionalOperatorExtensionsTests {
 			emit(3)
 			emit(4)
 		}
-		runBlocking {
-			val list = flow.transactional(operator).toList()
-			assertThat(list).hasSize(4)
-		}
+		val list = flow.transactional(operator).toList()
+		assertThat(list).hasSize(4)
 		assertThat(tm.commit).isTrue()
 		assertThat(tm.rollback).isFalse()
 	}
@@ -100,15 +93,13 @@ class TransactionalOperatorExtensionsTests {
 			delay(1)
 			throw IllegalStateException()
 		}
-		runBlocking {
-			try {
+		assertThatIllegalStateException().isThrownBy {
+			runBlocking {
 				flow.transactional(operator).toList()
-			} catch (ex: IllegalStateException) {
-				assertThat(tm.commit).isFalse()
-				assertThat(tm.rollback).isTrue()
-				return@runBlocking
 			}
 		}
+		assertThat(tm.commit).isFalse()
+		assertThat(tm.rollback).isTrue()
 	}
 
 	@Test
diff --git a/spring-web/src/test/kotlin/org/springframework/web/server/ServerWebExchangeExtensionsTest.kt b/spring-web/src/test/kotlin/org/springframework/web/server/ServerWebExchangeExtensionsTest.kt
index 575ac111a20..7a60d6c9b38 100644
--- a/spring-web/src/test/kotlin/org/springframework/web/server/ServerWebExchangeExtensionsTest.kt
+++ b/spring-web/src/test/kotlin/org/springframework/web/server/ServerWebExchangeExtensionsTest.kt
@@ -19,7 +19,6 @@ package org.springframework.web.server
 import io.mockk.every
 import io.mockk.mockk
 import io.mockk.verify
-import kotlinx.coroutines.runBlocking
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.Test
 import org.springframework.http.codec.multipart.Part
@@ -35,44 +34,36 @@ import java.security.Principal
 class ServerWebExchangeExtensionsTest {
 
 	@Test
-	fun `awaitFormData extension`() {
+	suspend fun `awaitFormData extension`() {
 		val exchange = mockk<ServerWebExchange>()
 		val multiMap = mockk<MultiValueMap<String, String>>()
 		every { exchange.formData } returns Mono.just(multiMap)
-		runBlocking {
-			assertThat(exchange.awaitFormData()).isEqualTo(multiMap)
-		}
+		assertThat(exchange.awaitFormData()).isEqualTo(multiMap)
 	}
 
 	@Test
-	fun `awaitMultipartData extension`() {
+	suspend fun `awaitMultipartData extension`() {
 		val exchange = mockk<ServerWebExchange>()
 		val multiMap = mockk<MultiValueMap<String, Part>>()
 		every { exchange.multipartData } returns Mono.just(multiMap)
-		runBlocking {
-			assertThat(exchange.awaitMultipartData()).isEqualTo(multiMap)
-		}
+		assertThat(exchange.awaitMultipartData()).isEqualTo(multiMap)
 	}
 
 	@Test
-	fun `awaitPrincipal extension`() {
+	suspend fun `awaitPrincipal extension`() {
 		val exchange = mockk<ServerWebExchange>()
 		val principal = mockk<Principal>()
 		every { exchange.getPrincipal<Principal>() } returns Mono.just(principal)
-		runBlocking {
-			assertThat(exchange.awaitPrincipal<Principal>()).isEqualTo(principal)
-		}
+		assertThat(exchange.awaitPrincipal<Principal>()).isEqualTo(principal)
 		verify { exchange.getPrincipal<Principal>() }
 	}
 
 	@Test
-	fun `awaitSession extension`() {
+	suspend fun `awaitSession extension`() {
 		val exchange = mockk<ServerWebExchange>()
 		val session = mockk<WebSession>()
 		every { exchange.session } returns Mono.just(session)
-		runBlocking {
-			assertThat(exchange.awaitSession()).isEqualTo(session)
-		}
+		assertThat(exchange.awaitSession()).isEqualTo(session)
 	}
 
 	@Test
@@ -80,9 +71,7 @@ class ServerWebExchangeExtensionsTest {
 		val builder = mockk<ServerWebExchange.Builder>()
 		val principal = mockk<Principal>()
 		every { builder.principal(any<Mono<Principal>>()) } returns builder
-		runBlocking {
-			assertThat(builder.principal { principal }).isEqualTo(builder)
-		}
+		assertThat(builder.principal { principal }).isEqualTo(builder)
 		verify { builder.principal(any<Mono<Principal>>()) }
 	}
 
diff --git a/spring-web/src/test/kotlin/org/springframework/web/service/invoker/HttpServiceMethodKotlinTests.kt b/spring-web/src/test/kotlin/org/springframework/web/service/invoker/HttpServiceMethodKotlinTests.kt
index c5a62bd593a..67291486179 100644
--- a/spring-web/src/test/kotlin/org/springframework/web/service/invoker/HttpServiceMethodKotlinTests.kt
+++ b/spring-web/src/test/kotlin/org/springframework/web/service/invoker/HttpServiceMethodKotlinTests.kt
@@ -18,7 +18,6 @@ package org.springframework.web.service.invoker
 
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.toList
-import kotlinx.coroutines.runBlocking
 import org.assertj.core.api.Assertions.assertThat
 import org.assertj.core.api.Assertions.assertThatIllegalStateException
 import org.junit.jupiter.api.Test
@@ -42,7 +41,7 @@ class KotlinHttpServiceMethodTests {
 	private val reactorProxyFactory = HttpServiceProxyFactory.builderFor(this.reactorExchangeAdapter).build()
 
 	@Test
-	fun coroutinesService(): Unit = runBlocking {
+	suspend fun coroutinesService() {
 		val service = reactorProxyFactory.createClient(FunctionsService::class.java)
 
 		val stringBody = service.stringBody()
diff --git a/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/client/ClientResponseExtensionsTests.kt b/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/client/ClientResponseExtensionsTests.kt
index bf6d887e433..b43b3f5d24e 100644
--- a/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/client/ClientResponseExtensionsTests.kt
+++ b/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/client/ClientResponseExtensionsTests.kt
@@ -19,7 +19,6 @@ package org.springframework.web.reactive.function.client
 import io.mockk.every
 import io.mockk.mockk
 import io.mockk.verify
-import kotlinx.coroutines.runBlocking
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.Test
 import org.springframework.core.ParameterizedTypeReference
@@ -74,99 +73,79 @@ class ClientResponseExtensionsTests {
 	}
 
 	@Test
-	fun awaitBody() {
+	suspend fun awaitBody() {
 		val response = mockk<ClientResponse>()
 		every { response.bodyToMono<String>() } returns Mono.just("foo")
-		runBlocking {
-			assertThat(response.awaitBody<String>()).isEqualTo("foo")
-		}
+		assertThat(response.awaitBody<String>()).isEqualTo("foo")
 	}
 
 	@Test
-	fun `awaitBody with KClass parameter`() {
+	suspend fun `awaitBody with KClass parameter`() {
 		val response = mockk<ClientResponse>()
 		every { response.bodyToMono(String::class.java) } returns Mono.just("foo")
-		runBlocking {
-			assertThat(response.awaitBody(String::class)).isEqualTo("foo")
-		}
+		assertThat(response.awaitBody(String::class)).isEqualTo("foo")
 	}
 
 	@Test
-	fun awaitBodyOrNull() {
+	suspend fun awaitBodyOrNull() {
 		val response = mockk<ClientResponse>()
 		every { response.bodyToMono<String>() } returns Mono.empty()
-		runBlocking {
-			assertThat(response.awaitBodyOrNull<String>()).isNull()
-		}
+		assertThat(response.awaitBodyOrNull<String>()).isNull()
 	}
 
 	@Test
-	fun `awaitBodyOrNullGeneric with KClass parameter`() {
+	suspend fun `awaitBodyOrNullGeneric with KClass parameter`() {
 		val response = mockk<ClientResponse>()
 		every { response.bodyToMono(String::class.java) } returns Mono.empty()
-		runBlocking {
-			assertThat(response.awaitBodyOrNull(String::class)).isNull()
-		}
+		assertThat(response.awaitBodyOrNull(String::class)).isNull()
 	}
 
 	@Test
-	fun awaitEntity() {
+	suspend fun awaitEntity() {
 		val response = mockk<ClientResponse>()
 		val entity = ResponseEntity("foo", HttpStatus.OK)
 		every { response.toEntity<String>() } returns Mono.just(entity)
-		runBlocking {
-			assertThat(response.awaitEntity<String>()).isEqualTo(entity)
-		}
+		assertThat(response.awaitEntity<String>()).isEqualTo(entity)
 	}
 
 	@Test
-	fun `awaitEntity with KClass parameter`() {
+	suspend fun `awaitEntity with KClass parameter`() {
 		val response = mockk<ClientResponse>()
 		val entity = ResponseEntity("foo", HttpStatus.OK)
 		every { response.toEntity(String::class.java) } returns Mono.just(entity)
-		runBlocking {
-			assertThat(response.awaitEntity(String::class)).isEqualTo(entity)
-		}
+		assertThat(response.awaitEntity(String::class)).isEqualTo(entity)
 	}
 
 	@Test
-	fun awaitEntityList() {
+	suspend fun awaitEntityList() {
 		val response = mockk<ClientResponse>()
 		val entity = ResponseEntity(listOf("foo"), HttpStatus.OK)
 		every { response.toEntityList<String>() } returns Mono.just(entity)
-		runBlocking {
-			assertThat(response.awaitEntityList<String>()).isEqualTo(entity)
-		}
+		assertThat(response.awaitEntityList<String>()).isEqualTo(entity)
 	}
 
 	@Test
-	fun `awaitEntityList with KClass parameter`() {
+	suspend fun `awaitEntityList with KClass parameter`() {
 		val response = mockk<ClientResponse>()
 		val entity = ResponseEntity(listOf("foo"), HttpStatus.OK)
 		every { response.toEntityList(String::class.java) } returns Mono.just(entity)
-		runBlocking {
-			assertThat(response.awaitEntityList(String::class)).isEqualTo(entity)
-		}
+		assertThat(response.awaitEntityList(String::class)).isEqualTo(entity)
 	}
 
 	@Test
-	fun awaitBodilessEntity() {
+	suspend fun awaitBodilessEntity() {
 		val response = mockk<ClientResponse>()
 		val entity = mockk<ResponseEntity<Void>>()
 		every { response.toBodilessEntity() } returns Mono.just(entity)
-		runBlocking {
-			assertThat(response.awaitBodilessEntity()).isEqualTo(entity)
-		}
+		assertThat(response.awaitBodilessEntity()).isEqualTo(entity)
 	}
 
 	@Test
-	fun createExceptionAndAwait() {
+	suspend fun createExceptionAndAwait() {
 		val response = mockk<ClientResponse>()
 		val exception = mockk<WebClientResponseException>()
 		every { response.createException() } returns Mono.just(exception)
-		runBlocking {
-			assertThat(response.createExceptionAndAwait()).isEqualTo(exception)
-		}
+		assertThat(response.createExceptionAndAwait()).isEqualTo(exception)
 	}
 
 	class Foo
diff --git a/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/client/CoExchangeFilterFunctionTests.kt b/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/client/CoExchangeFilterFunctionTests.kt
index 264b5b90ca1..456a2dde13f 100644
--- a/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/client/CoExchangeFilterFunctionTests.kt
+++ b/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/client/CoExchangeFilterFunctionTests.kt
@@ -18,7 +18,6 @@ package org.springframework.web.reactive.function.client
 
 import io.mockk.mockk
 import kotlinx.coroutines.delay
-import kotlinx.coroutines.runBlocking
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.Test
 
@@ -30,12 +29,10 @@ import org.junit.jupiter.api.Test
 class CoExchangeFilterFunctionTests {
 
 	@Test
-	fun exchange() {
+	suspend fun exchange() {
 		val response = mockk<ClientResponse>()
 		val exchangeFunction = MyCoExchangeFunction(response)
-		runBlocking {
-			assertThat(exchangeFunction.exchange(mockk())).isEqualTo(response)
-		}
+		assertThat(exchangeFunction.exchange(mockk())).isEqualTo(response)
 	}
 }
 
diff --git a/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/client/WebClientExtensionsTests.kt b/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/client/WebClientExtensionsTests.kt
index 368faeecf1e..514deffc602 100644
--- a/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/client/WebClientExtensionsTests.kt
+++ b/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/client/WebClientExtensionsTests.kt
@@ -102,12 +102,10 @@ class WebClientExtensionsTests {
 	}
 
 	@Test
-	fun `awaitExchange with function parameter`() {
+	suspend fun `awaitExchange with function parameter`() {
 		val foo = mockk<Foo>()
 		every { requestBodySpec.exchangeToMono(any<Function<ClientResponse, Mono<Foo>>>()) } returns Mono.just(foo)
-		runBlocking {
-			assertThat(requestBodySpec.awaitExchange { foo }).isEqualTo(foo)
-		}
+		assertThat(requestBodySpec.awaitExchange { foo }).isEqualTo(foo)
 	}
 
 	@Test
@@ -123,21 +121,17 @@ class WebClientExtensionsTests {
 	}
 
 	@Test
-	fun `awaitExchangeOrNull returning null`() {
+	suspend fun `awaitExchangeOrNull returning null`() {
 		val foo = mockk<Foo>()
 		every { requestBodySpec.exchangeToMono(any<Function<ClientResponse, Mono<Foo>>>()) } returns Mono.empty()
-		runBlocking {
-			assertThat(requestBodySpec.awaitExchangeOrNull { foo }).isEqualTo(null)
-		}
+		assertThat(requestBodySpec.awaitExchangeOrNull { foo }).isEqualTo(null)
 	}
 
 	@Test
-	fun `awaitExchangeOrNull returning object`() {
+	suspend fun `awaitExchangeOrNull returning object`() {
 		val foo = mockk<Foo>()
 		every { requestBodySpec.exchangeToMono(any<Function<ClientResponse, Mono<Foo>>>()) } returns Mono.just(foo)
-		runBlocking {
-			assertThat(requestBodySpec.awaitExchangeOrNull { foo }).isEqualTo(foo)
-		}
+		assertThat(requestBodySpec.awaitExchangeOrNull { foo }).isEqualTo(foo)
 	}
 
 	@Test
@@ -153,65 +147,53 @@ class WebClientExtensionsTests {
 	}
 
 	@Test
-	fun exchangeToFlow() {
+	suspend fun exchangeToFlow() {
 		val foo = mockk<Foo>()
 		every { requestBodySpec.exchangeToFlux(any<Function<ClientResponse, Flux<Foo>>>()) } returns Flux.just(foo, foo)
-		runBlocking {
-			assertThat(requestBodySpec.exchangeToFlow {
-				flow {
-					emit(foo)
-					emit(foo)
-				}
-			}.toList()).isEqualTo(listOf(foo, foo))
-		}
+		assertThat(requestBodySpec.exchangeToFlow {
+			flow {
+				emit(foo)
+				emit(foo)
+			}
+		}.toList()).isEqualTo(listOf(foo, foo))
 	}
 
 	@Test
-	fun awaitBody() {
+	suspend fun awaitBody() {
 		val spec = mockk<WebClient.ResponseSpec>()
 		every { spec.bodyToMono<String>() } returns Mono.just("foo")
-		runBlocking {
-			assertThat(spec.awaitBody<String>()).isEqualTo("foo")
-		}
+		assertThat(spec.awaitBody<String>()).isEqualTo("foo")
 	}
 
 	@Test
-	fun `awaitBody of type Unit`() {
+	suspend fun `awaitBody of type Unit`() {
 		val spec = mockk<WebClient.ResponseSpec>()
 		val entity = mockk<ResponseEntity<Void>>()
 		every { spec.toBodilessEntity() } returns Mono.just(entity)
-		runBlocking {
-			assertThat(spec.awaitBody<Unit>()).isEqualTo(Unit)
-		}
+		assertThat(spec.awaitBody<Unit>()).isEqualTo(Unit)
 	}
 
 	@Test
-	fun awaitBodyOrNull() {
+	suspend fun awaitBodyOrNull() {
 		val spec = mockk<WebClient.ResponseSpec>()
 		every { spec.bodyToMono<String>() } returns Mono.just("foo")
-		runBlocking {
-			assertThat(spec.awaitBodyOrNull<String>()).isEqualTo("foo")
-		}
+		assertThat(spec.awaitBodyOrNull<String>()).isEqualTo("foo")
 	}
 
 	@Test
-	fun `awaitBodyOrNull of type Unit`() {
+	suspend fun `awaitBodyOrNull of type Unit`() {
 		val spec = mockk<WebClient.ResponseSpec>()
 		val entity = mockk<ResponseEntity<Void>>()
 		every { spec.toBodilessEntity() } returns Mono.just(entity)
-		runBlocking {
-			assertThat(spec.awaitBodyOrNull<Unit>()).isEqualTo(Unit)
-		}
+		assertThat(spec.awaitBodyOrNull<Unit>()).isEqualTo(Unit)
 	}
 
 	@Test
-	fun awaitBodilessEntity() {
+	suspend fun awaitBodilessEntity() {
 		val spec = mockk<WebClient.ResponseSpec>()
 		val entity = mockk<ResponseEntity<Void>>()
 		every { spec.toBodilessEntity() } returns Mono.just(entity)
-		runBlocking {
-			assertThat(spec.awaitBodilessEntity()).isEqualTo(entity)
-		}
+		assertThat(spec.awaitBodilessEntity()).isEqualTo(entity)
 	}
 
 	@Test
diff --git a/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/client/support/WebClientHttpServiceProxyKotlinTests.kt b/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/client/support/WebClientHttpServiceProxyKotlinTests.kt
index b8790665564..23f224501e2 100644
--- a/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/client/support/WebClientHttpServiceProxyKotlinTests.kt
+++ b/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/client/support/WebClientHttpServiceProxyKotlinTests.kt
@@ -15,7 +15,6 @@
  */
 package org.springframework.web.reactive.function.client.support
 
-import kotlinx.coroutines.runBlocking
 import mockwebserver3.MockResponse
 import mockwebserver3.MockWebServer
 import org.assertj.core.api.Assertions.assertThat
@@ -69,12 +68,10 @@ class KotlinWebClientHttpServiceGroupAdapterServiceProxyTests {
 	}
 
 	@Test
-	fun greetingSuspending() {
+	suspend fun greetingSuspending() {
 		prepareResponse { it.setHeader("Content-Type", "text/plain").body("Hello Spring!") }
-		runBlocking {
-			val greeting = initHttpService().getGreetingSuspending()
-			assertThat(greeting).isEqualTo("Hello Spring!")
-		}
+		val greeting = initHttpService().getGreetingSuspending()
+		assertThat(greeting).isEqualTo("Hello Spring!")
 	}
 
 	@Test
@@ -94,7 +91,7 @@ class KotlinWebClientHttpServiceGroupAdapterServiceProxyTests {
 	}
 
 	@Test
-	fun greetingSuspendingWithRequestAttribute() {
+	suspend fun greetingSuspendingWithRequestAttribute() {
 		val attributes: MutableMap<String, Any> = HashMap()
 		val webClient = WebClient.builder()
 			.baseUrl(server.url("/").toString())
@@ -105,11 +102,9 @@ class KotlinWebClientHttpServiceGroupAdapterServiceProxyTests {
 			.build()
 		prepareResponse { it.setHeader("Content-Type", "text/plain").body("Hello Spring!") }
 		val service = initHttpService(webClient)
-		runBlocking {
-			val greeting = service.getGreetingSuspendingWithAttribute("myAttributeValue")
-			assertThat(greeting).isEqualTo("Hello Spring!")
-			assertThat(attributes).containsEntry("myAttribute", "myAttributeValue")
-		}
+		val greeting = service.getGreetingSuspendingWithAttribute("myAttributeValue")
+		assertThat(greeting).isEqualTo("Hello Spring!")
+		assertThat(attributes).containsEntry("myAttribute", "myAttributeValue")
 	}
 
 	@Test
diff --git a/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/server/RenderingResponseExtensionsTests.kt b/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/server/RenderingResponseExtensionsTests.kt
index 081a05dd3cc..c4814ab4e86 100644
--- a/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/server/RenderingResponseExtensionsTests.kt
+++ b/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/server/RenderingResponseExtensionsTests.kt
@@ -19,20 +19,17 @@ package org.springframework.web.reactive.function.server
 import io.mockk.every
 import io.mockk.mockk
 import io.mockk.verify
-import kotlinx.coroutines.runBlocking
 import org.junit.jupiter.api.Test
 import reactor.core.publisher.Mono
 
 class RenderingResponseExtensionsTests {
 
 	@Test
-	fun buildAndAwait() {
+	suspend fun buildAndAwait() {
 		val builder = mockk<RenderingResponse.Builder>()
 		val response = mockk<RenderingResponse>()
 		every { builder.build() } returns Mono.just(response)
-		runBlocking {
-			builder.buildAndAwait()
-		}
+		builder.buildAndAwait()
 		verify {
 			builder.build()
 		}
diff --git a/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/server/ServerRequestExtensionsTests.kt b/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/server/ServerRequestExtensionsTests.kt
index eeeb3dafd07..12fb7931f3d 100644
--- a/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/server/ServerRequestExtensionsTests.kt
+++ b/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/server/ServerRequestExtensionsTests.kt
@@ -19,7 +19,6 @@ package org.springframework.web.reactive.function.server
 import io.mockk.every
 import io.mockk.mockk
 import io.mockk.verify
-import kotlinx.coroutines.runBlocking
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.Test
 import org.springframework.core.ParameterizedTypeReference
@@ -70,71 +69,55 @@ class ServerRequestExtensionsTests {
 	}
 
 	@Test
-	fun `awaitBody with reified type parameters`() {
+	suspend fun `awaitBody with reified type parameters`() {
 		every { request.bodyToMono<String>() } returns Mono.just("foo")
-		runBlocking {
-			assertThat(request.awaitBody<String>()).isEqualTo("foo")
-		}
+		assertThat(request.awaitBody<String>()).isEqualTo("foo")
 	}
 
 	@Test
-	fun `awaitBody with KClass parameters`() {
+	suspend fun `awaitBody with KClass parameters`() {
 		every { request.bodyToMono(String::class.java) } returns Mono.just("foo")
-		runBlocking {
-			assertThat(request.awaitBody(String::class)).isEqualTo("foo")
-		}
+		assertThat(request.awaitBody(String::class)).isEqualTo("foo")
 	}
 
 	@Test
-	fun `awaitBodyOrNull with reified type parameters`() {
+	suspend fun `awaitBodyOrNull with reified type parameters`() {
 		every { request.bodyToMono<String>() } returns Mono.empty()
-		runBlocking {
-			assertThat(request.awaitBodyOrNull<String>()).isNull()
-		}
+		assertThat(request.awaitBodyOrNull<String>()).isNull()
 	}
 
 	@Test
-	fun `awaitBodyOrNull with KClass parameters`() {
+	suspend fun `awaitBodyOrNull with KClass parameters`() {
 		every { request.bodyToMono(String::class.java) } returns Mono.empty()
-		runBlocking {
-			assertThat(request.awaitBodyOrNull(String::class)).isNull()
-		}
+		assertThat(request.awaitBodyOrNull(String::class)).isNull()
 	}
 
 	@Test
-	fun awaitFormData() {
+	suspend fun awaitFormData() {
 		val map = mockk<MultiValueMap<String, String>>()
 		every { request.formData() } returns Mono.just(map)
-		runBlocking {
-			assertThat(request.awaitFormData()).isEqualTo(map)
-		}
+		assertThat(request.awaitFormData()).isEqualTo(map)
 	}
 
 	@Test
-	fun awaitMultipartData() {
+	suspend fun awaitMultipartData() {
 		val map = mockk<MultiValueMap<String, Part>>()
 		every { request.multipartData() } returns Mono.just(map)
-		runBlocking {
-			assertThat(request.awaitMultipartData()).isEqualTo(map)
-		}
+		assertThat(request.awaitMultipartData()).isEqualTo(map)
 	}
 
 	@Test
-	fun awaitPrincipal() {
+	suspend fun awaitPrincipal() {
 		val principal = mockk<Principal>()
 		every { request.principal() } returns Mono.just(principal)
-		runBlocking {
-			assertThat(request.awaitPrincipal()).isEqualTo(principal)
-		}
+		assertThat(request.awaitPrincipal()).isEqualTo(principal)
 	}
 
 	@Test
-	fun awaitSession() {
+	suspend fun awaitSession() {
 		val session = mockk<WebSession>()
 		every { request.session() } returns Mono.just(session)
-		runBlocking {
-			assertThat(request.awaitSession()).isEqualTo(session)
-		}
+		assertThat(request.awaitSession()).isEqualTo(session)
 	}
 
 	@Test
diff --git a/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/server/ServerResponseExtensionsTests.kt b/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/server/ServerResponseExtensionsTests.kt
index 59afe71d3c9..c16f637054b 100644
--- a/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/server/ServerResponseExtensionsTests.kt
+++ b/spring-webflux/src/test/kotlin/org/springframework/web/reactive/function/server/ServerResponseExtensionsTests.kt
@@ -21,7 +21,6 @@ import io.mockk.mockk
 import io.mockk.verify
 import io.reactivex.rxjava3.core.Flowable
 import kotlinx.coroutines.flow.Flow
-import kotlinx.coroutines.runBlocking
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.Test
 import org.reactivestreams.Publisher
@@ -63,39 +62,33 @@ class ServerResponseExtensionsTests {
 	}
 
 	@Test
-	fun `BodyBuilder#bodyAndAwait with object parameter`() {
+	suspend fun `BodyBuilder#bodyAndAwait with object parameter`() {
 		val response = mockk<ServerResponse>()
 		val body = "foo"
 		every { bodyBuilder.bodyValue(ofType<String>()) } returns Mono.just(response)
-		runBlocking {
-			bodyBuilder.bodyValueAndAwait(body)
-		}
+		bodyBuilder.bodyValueAndAwait(body)
 		verify {
 			bodyBuilder.bodyValue(ofType<String>())
 		}
 	}
 
 	@Test
-	fun `BodyBuilder#bodyValueWithTypeAndAwait with object parameter and reified type parameters`() {
+	suspend fun `BodyBuilder#bodyValueWithTypeAndAwait with object parameter and reified type parameters`() {
 		val response = mockk<ServerResponse>()
 		val body = listOf("foo", "bar")
 		every { bodyBuilder.bodyValue(ofType<List<String>>(), object : ParameterizedTypeReference<List<String>>() {}) } returns Mono.just(response)
-		runBlocking {
-			bodyBuilder.bodyValueWithTypeAndAwait<List<String>>(body)
-		}
+		bodyBuilder.bodyValueWithTypeAndAwait<List<String>>(body)
 		verify {
 			bodyBuilder.bodyValue(body, object : ParameterizedTypeReference<List<String>>() {})
 		}
 	}
 
 	@Test
-	fun `BodyBuilder#bodyAndAwait with flow parameter`() {
+	suspend fun `BodyBuilder#bodyAndAwait with flow parameter`() {
 		val response = mockk<ServerResponse>()
 		val body = mockk<Flow<List<Foo>>>()
 		every { bodyBuilder.body(ofType<Flow<List<Foo>>>(), object : ParameterizedTypeReference<List<Foo>>() {}) } returns Mono.just(response)
-		runBlocking {
-			bodyBuilder.bodyAndAwait(body)
-		}
+		bodyBuilder.bodyAndAwait(body)
 		verify {
 			bodyBuilder.body(ofType<Flow<List<Foo>>>(), object : ParameterizedTypeReference<List<Foo>>() {})
 		}
@@ -126,38 +119,32 @@ class ServerResponseExtensionsTests {
 	}
 
 	@Test
-	fun `BodyBuilder#renderAndAwait with a vararg parameter`() {
+	suspend fun `BodyBuilder#renderAndAwait with a vararg parameter`() {
 		val response = mockk<ServerResponse>()
 		every { bodyBuilder.render("foo", any(), any()) } returns Mono.just(response)
-		runBlocking {
-			bodyBuilder.renderAndAwait("foo", "bar", "baz")
-		}
+		bodyBuilder.renderAndAwait("foo", "bar", "baz")
 		verify {
 			bodyBuilder.render("foo", any(), any())
 		}
 	}
 
 	@Test
-	fun `BodyBuilder#renderAndAwait with a Map parameter`() {
+	suspend fun `BodyBuilder#renderAndAwait with a Map parameter`() {
 		val response = mockk<ServerResponse>()
 		val map = mockk<Map<String, *>>()
 		every { bodyBuilder.render("foo", map) } returns Mono.just(response)
-		runBlocking {
-			bodyBuilder.renderAndAwait("foo", map)
-		}
+		bodyBuilder.renderAndAwait("foo", map)
 		verify {
 			bodyBuilder.render("foo", map)
 		}
 	}
 
 	@Test
-	fun `HeadersBuilder#buildAndAwait`() {
+	suspend fun `HeadersBuilder#buildAndAwait`() {
 		val response = mockk<ServerResponse>()
 		val builder = mockk<ServerResponse.HeadersBuilder<*>>()
 		every { builder.build() } returns Mono.just(response)
-		runBlocking {
-			assertThat(builder.buildAndAwait()).isEqualTo(response)
-		}
+		assertThat(builder.buildAndAwait()).isEqualTo(response)
 	}
 
 	class Foo