Polishing

spring-aop/src/main/java/org/springframework/aop/framework/CglibAopProxy.java

@@ -94,17 +94,17 @@ class CglibAopProxy implements AopProxy, Serializable {
 	private static final int INVOKE_HASHCODE = 6;
 
 
+	private static final String COROUTINES_FLOW_CLASS_NAME = "kotlinx.coroutines.flow.Flow";
+
+	private static final boolean coroutinesReactorPresent = ClassUtils.isPresent(
+			"kotlinx.coroutines.reactor.MonoKt", CglibAopProxy.class.getClassLoader());
+
 	/** Logger available to subclasses; static to optimize serialization. */
 	protected static final Log logger = LogFactory.getLog(CglibAopProxy.class);
 
 	/** Keeps track of the Classes that we have validated for final methods. */
 	private static final Map<Class<?>, Boolean> validatedClasses = new WeakHashMap<>();
 
-	private static final String COROUTINES_FLOW_CLASS_NAME = "kotlinx.coroutines.flow.Flow";
-
-	private static final boolean coroutinesReactorPresent = ClassUtils.isPresent("kotlinx.coroutines.reactor.MonoKt",
-			CglibAopProxy.class.getClassLoader());;
-
 
 	/** The configuration used to configure this proxy. */
 	protected final AdvisedSupport advised;

spring-aop/src/main/java/org/springframework/aop/framework/JdkDynamicAopProxy.java

@@ -75,8 +75,8 @@ final class JdkDynamicAopProxy implements AopProxy, InvocationHandler, Serializa
 
 	private static final String COROUTINES_FLOW_CLASS_NAME = "kotlinx.coroutines.flow.Flow";
 
-	private static final boolean coroutinesReactorPresent = ClassUtils.isPresent("kotlinx.coroutines.reactor.MonoKt",
-			JdkDynamicAopProxy.class.getClassLoader());;
+	private static final boolean coroutinesReactorPresent = ClassUtils.isPresent(
+			"kotlinx.coroutines.reactor.MonoKt", JdkDynamicAopProxy.class.getClassLoader());
 
 	/** We use a static Log to avoid serialization issues. */
 	private static final Log logger = LogFactory.getLog(JdkDynamicAopProxy.class);

spring-aop/src/main/java/org/springframework/aop/support/AopUtils.java

@@ -64,8 +64,9 @@ import org.springframework.util.ReflectionUtils;
  */
 public abstract class AopUtils {
 
-	private static final boolean coroutinesReactorPresent = ClassUtils.isPresent("kotlinx.coroutines.reactor.MonoKt",
-			AopUtils.class.getClassLoader());;
+	private static final boolean coroutinesReactorPresent = ClassUtils.isPresent(
+			"kotlinx.coroutines.reactor.MonoKt", AopUtils.class.getClassLoader());
+
 
 	/**
 	 * Check whether the given object is a JDK dynamic proxy or a CGLIB proxy.
@@ -349,8 +350,8 @@ public abstract class AopUtils {
 		// Use reflection to invoke the method.
 		try {
 			ReflectionUtils.makeAccessible(method);
-			return coroutinesReactorPresent && KotlinDetector.isSuspendingFunction(method) ?
-					KotlinDelegate.invokeSuspendingFunction(method, target, args) : method.invoke(target, args);
+			return (coroutinesReactorPresent && KotlinDetector.isSuspendingFunction(method) ?
+					KotlinDelegate.invokeSuspendingFunction(method, target, args) : method.invoke(target, args));
 		}
 		catch (InvocationTargetException ex) {
 			// Invoked method threw a checked exception.

spring-context/src/main/java/org/springframework/context/aot/KotlinReflectionBeanRegistrationAotProcessor.java

@@ -35,8 +35,8 @@ import org.springframework.lang.Nullable;
  */
 class KotlinReflectionBeanRegistrationAotProcessor implements BeanRegistrationAotProcessor {
 
-	@Nullable
 	@Override
+	@Nullable
 	public BeanRegistrationAotContribution processAheadOfTime(RegisteredBean registeredBean) {
 		Class<?> beanClass = registeredBean.getBeanClass();
 		if (KotlinDetector.isKotlinType(beanClass)) {
@@ -45,6 +45,7 @@ class KotlinReflectionBeanRegistrationAotProcessor implements BeanRegistrationAo
 		return null;
 	}
 
+
 	private static class AotContribution implements BeanRegistrationAotContribution {
 
 		private final Class<?> beanClass;

spring-web/src/test/java/org/springframework/http/server/ServletServerHttpRequestTests.java

@@ -124,6 +124,7 @@ class ServletServerHttpRequestTests {
 		assertThat(headers).as("No HttpHeaders returned").isNotNull();
 		assertThat(headers.containsKey(headerName)).as("Invalid headers returned").isTrue();
 		List<String> headerValues = headers.get(headerName);
+		assertThat(headerValues).as("No header values returned").isNotNull();
 		assertThat(headerValues.size()).as("Invalid header values returned").isEqualTo(2);
 		assertThat(headerValues.contains(headerValue1)).as("Invalid header values returned").isTrue();
 		assertThat(headerValues.contains(headerValue2)).as("Invalid header values returned").isTrue();
@@ -150,7 +151,7 @@ class ServletServerHttpRequestTests {
 		assertThat(headers.getContentType()).isNull();
 	}
 
-	@Test // gh-27957
+	@Test  // gh-27957
 	void getHeadersWithWildcardContentType() {
 		mockRequest.setContentType("*/*");
 		mockRequest.removeHeader("Content-Type");
@@ -166,7 +167,7 @@ class ServletServerHttpRequestTests {
 		assertThat(result).as("Invalid content returned").isEqualTo(content);
 	}
 
-	@Test // gh-13318
+	@Test  // gh-13318
 	void getFormBody() throws IOException {
 		mockRequest.setContentType("application/x-www-form-urlencoded; charset=UTF-8");
 		mockRequest.setMethod("POST");
@@ -189,7 +190,7 @@ class ServletServerHttpRequestTests {
 		assertThat(result).as("Invalid content returned").isEqualTo(content);
 	}
 
-	@Test // gh-31327
+	@Test  // gh-31327
 	void getFormBodyWhenQueryParamsAlsoPresent() throws IOException {
 		mockRequest.setContentType("application/x-www-form-urlencoded; charset=UTF-8");
 		mockRequest.setMethod("POST");
@@ -203,7 +204,7 @@ class ServletServerHttpRequestTests {
 		assertThat(result).as("Invalid content returned").isEqualTo(content);
 	}
 
-	@Test // gh-32471
+	@Test  // gh-32471
 	void getFormBodyWhenNotEncodedCharactersPresent() throws IOException {
 		mockRequest.setContentType("application/x-www-form-urlencoded; charset=UTF-8");
 		mockRequest.setMethod("POST");

spring-web/src/test/java/org/springframework/web/method/annotation/RequestParamMethodArgumentResolverTests.java

@@ -150,8 +150,6 @@ class RequestParamMethodArgumentResolverTests {
 
 		MethodParameter param = this.testMethod.annot(requestParam().notRequired("bar")).arg(String.class);
 		Object result = resolver.resolveArgument(param, null, webRequest, null);
-		boolean condition = result instanceof String;
-		assertThat(condition).isTrue();
 		assertThat(result).as("Invalid result").isEqualTo(expected);
 	}
 
@@ -162,12 +160,10 @@ class RequestParamMethodArgumentResolverTests {
 
 		MethodParameter param = this.testMethod.annotPresent(RequestParam.class).arg(String[].class);
 		Object result = resolver.resolveArgument(param, null, webRequest, null);
-		boolean condition = result instanceof String[];
-		assertThat(condition).isTrue();
-		assertThat((String[]) result).as("Invalid result").isEqualTo(expected);
+		assertThat(result).as("Invalid result").isEqualTo(expected);
 	}
 
-	@Test // gh-32577
+	@Test  // gh-32577
 	void resolveStringArrayWithEmptyArraySuffix() throws Exception {
 		String[] expected = new String[] {"foo", "bar"};
 		request.addParameter("name[]", expected[0]);
@@ -175,9 +171,7 @@ class RequestParamMethodArgumentResolverTests {
 
 		MethodParameter param = this.testMethod.annotPresent(RequestParam.class).arg(String[].class);
 		Object result = resolver.resolveArgument(param, null, webRequest, null);
-		boolean condition = result instanceof String[];
-		assertThat(condition).isTrue();
-		assertThat((String[]) result).isEqualTo(expected);
+		assertThat(result).isEqualTo(expected);
 	}
 
 	@Test
@@ -189,8 +183,6 @@ class RequestParamMethodArgumentResolverTests {
 
 		MethodParameter param = this.testMethod.annotPresent(RequestParam.class).arg(MultipartFile.class);
 		Object result = resolver.resolveArgument(param, null, webRequest, null);
-		boolean condition = result instanceof MultipartFile;
-		assertThat(condition).isTrue();
 		assertThat(result).as("Invalid result").isEqualTo(expected);
 	}
 
@@ -206,9 +198,6 @@ class RequestParamMethodArgumentResolverTests {
 
 		MethodParameter param = this.testMethod.annotPresent(RequestParam.class).arg(List.class, MultipartFile.class);
 		Object result = resolver.resolveArgument(param, null, webRequest, null);
-
-		boolean condition = result instanceof List;
-		assertThat(condition).isTrue();
 		assertThat(result).isEqualTo(Arrays.asList(expected1, expected2));
 	}
 
@@ -235,9 +224,7 @@ class RequestParamMethodArgumentResolverTests {
 
 		MethodParameter param = this.testMethod.annotPresent(RequestParam.class).arg(MultipartFile[].class);
 		Object result = resolver.resolveArgument(param, null, webRequest, null);
-
-		boolean condition = result instanceof MultipartFile[];
-		assertThat(condition).isTrue();
+		assertThat(result instanceof MultipartFile[]).isTrue();
 		MultipartFile[] parts = (MultipartFile[]) result;
 		assertThat(parts).hasSize(2);
 		assertThat(expected1).isEqualTo(parts[0]);
@@ -266,9 +253,6 @@ class RequestParamMethodArgumentResolverTests {
 
 		MethodParameter param = this.testMethod.annotPresent(RequestParam.class).arg(Part.class);
 		Object result = resolver.resolveArgument(param, null, webRequest, null);
-
-		boolean condition = result instanceof Part;
-		assertThat(condition).isTrue();
 		assertThat(result).as("Invalid result").isEqualTo(expected);
 	}
 
@@ -286,9 +270,6 @@ class RequestParamMethodArgumentResolverTests {
 
 		MethodParameter param = this.testMethod.annotPresent(RequestParam.class).arg(List.class, Part.class);
 		Object result = resolver.resolveArgument(param, null, webRequest, null);
-
-		boolean condition = result instanceof List;
-		assertThat(condition).isTrue();
 		assertThat(result).isEqualTo(Arrays.asList(expected1, expected2));
 	}
 
@@ -319,9 +300,7 @@ class RequestParamMethodArgumentResolverTests {
 
 		MethodParameter param = this.testMethod.annotPresent(RequestParam.class).arg(Part[].class);
 		Object result = resolver.resolveArgument(param, null, webRequest, null);
-
-		boolean condition = result instanceof Part[];
-		assertThat(condition).isTrue();
+		assertThat(result instanceof Part[]).isTrue();
 		Part[] parts = (Part[]) result;
 		assertThat(parts).hasSize(2);
 		assertThat(expected1).isEqualTo(parts[0]);
@@ -350,8 +329,6 @@ class RequestParamMethodArgumentResolverTests {
 
 		MethodParameter param = this.testMethod.annotNotPresent().arg(MultipartFile.class);
 		Object result = resolver.resolveArgument(param, null, webRequest, null);
-		boolean condition = result instanceof MultipartFile;
-		assertThat(condition).isTrue();
 		assertThat(result).as("Invalid result").isEqualTo(expected);
 	}
 
@@ -368,8 +345,6 @@ class RequestParamMethodArgumentResolverTests {
 				.annotNotPresent(RequestParam.class).arg(List.class, MultipartFile.class);
 
 		Object result = resolver.resolveArgument(param, null, webRequest, null);
-		boolean condition = result instanceof List;
-		assertThat(condition).isTrue();
 		assertThat(result).isEqualTo(Arrays.asList(expected1, expected2));
 	}
 
@@ -424,8 +399,6 @@ class RequestParamMethodArgumentResolverTests {
 
 		MethodParameter param = this.testMethod.annotNotPresent(RequestParam.class).arg(Part.class);
 		Object result = resolver.resolveArgument(param, null, webRequest, null);
-		boolean condition = result instanceof Part;
-		assertThat(condition).isTrue();
 		assertThat(result).as("Invalid result").isEqualTo(expected);
 	}
 
@@ -433,8 +406,6 @@ class RequestParamMethodArgumentResolverTests {
 	void resolveDefaultValue() throws Exception {
 		MethodParameter param = this.testMethod.annot(requestParam().notRequired("bar")).arg(String.class);
 		Object result = resolver.resolveArgument(param, null, webRequest, null);
-		boolean condition = result instanceof String;
-		assertThat(condition).isTrue();
 		assertThat(result).as("Invalid result").isEqualTo("bar");
 	}
 
@@ -452,7 +423,6 @@ class RequestParamMethodArgumentResolverTests {
 
 		WebDataBinderFactory binderFactory = mock();
 		given(binderFactory.createBinder(webRequest, null, "stringNotAnnot")).willReturn(binder);
-
 		request.addParameter("stringNotAnnot", "");
 
 		MethodParameter param = this.testMethod.annotNotPresent(RequestParam.class).arg(String.class);
@@ -466,7 +436,6 @@ class RequestParamMethodArgumentResolverTests {
 
 		WebDataBinderFactory binderFactory = mock();
 		given(binderFactory.createBinder(webRequest, null, "booleanParam")).willReturn(binder);
-
 		request.addParameter("booleanParam", " ");
 
 		MethodParameter param = this.testMethod.annotPresent(RequestParam.class).arg(Boolean.class);
@@ -481,7 +450,6 @@ class RequestParamMethodArgumentResolverTests {
 
 		WebDataBinderFactory binderFactory = mock();
 		given(binderFactory.createBinder(webRequest, null, "name")).willReturn(binder);
-
 		request.addParameter("name", "");
 
 		MethodParameter param = this.testMethod.annot(requestParam().notRequired()).arg(String.class);
@@ -489,14 +457,13 @@ class RequestParamMethodArgumentResolverTests {
 		assertThat(arg).isNull();
 	}
 
-	@Test // gh-29550
+	@Test  // gh-29550
 	public void missingRequestParamEmptyValueNotRequiredWithDefaultValue() throws Exception {
 		WebDataBinder binder = new WebRequestDataBinder(null);
 		binder.registerCustomEditor(String.class, new StringTrimmerEditor(true));
 
 		WebDataBinderFactory binderFactory = mock();
 		given(binderFactory.createBinder(webRequest, null, "name")).willReturn(binder);
-
 		request.addParameter("name", "    ");
 
 		MethodParameter param = this.testMethod.annot(requestParam().notRequired("bar")).arg(String.class);
@@ -509,9 +476,6 @@ class RequestParamMethodArgumentResolverTests {
 		request.setParameter("stringNotAnnot", "plainValue");
 		MethodParameter param = this.testMethod.annotNotPresent(RequestParam.class).arg(String.class);
 		Object result = resolver.resolveArgument(param, null, webRequest, null);
-
-		boolean condition = result instanceof String;
-		assertThat(condition).isTrue();
 		assertThat(result).isEqualTo("plainValue");
 	}
 
@@ -658,9 +622,7 @@ class RequestParamMethodArgumentResolverTests {
 
 		MethodParameter param = this.testMethod.annotPresent(RequestParam.class).arg(Optional.class, MultipartFile.class);
 		Object result = resolver.resolveArgument(param, null, webRequest, binderFactory);
-
-		boolean condition = result instanceof Optional;
-		assertThat(condition).isTrue();
+		assertThat(result instanceof Optional).isTrue();
 		assertThat(((Optional<?>) result).get()).as("Invalid result").isEqualTo(expected);
 	}
 

spring-webflux/src/test/java/org/springframework/web/reactive/result/method/annotation/ControllerAdviceTests.java

@@ -188,8 +188,8 @@ class ControllerAdviceTests {
 		TestController controller = context.getBean(TestController.class);
 		controller.setException(exception);
 
-		Object actual = handle(adapter, controller, this.postExchange, Duration.ofMillis(100)
-				, "threadWithArg", String.class).getReturnValue();
+		Object actual = handle(adapter, controller, this.postExchange, Duration.ofMillis(1000),
+				"threadWithArg", String.class).getReturnValue();
 		assertThat(actual).isEqualTo(expected);
 	}
 
@@ -242,6 +242,7 @@ class ControllerAdviceTests {
 		}
 	}
 
+
 	@Controller
 	static class TestController {
 
@@ -249,7 +250,6 @@ class ControllerAdviceTests {
 
 		private Throwable exception;
 
-
 		void setValidator(Validator validator) {
 			this.validator = validator;
 		}
@@ -258,7 +258,6 @@ class ControllerAdviceTests {
 			this.exception = exception;
 		}
 
-
 		@InitBinder
 		public void initDataBinder(WebDataBinder dataBinder) {
 			if (this.validator != null) {
@@ -291,6 +290,7 @@ class ControllerAdviceTests {
 		}
 	}
 
+
 	@ControllerAdvice
 	@Order(1)
 	static class OneControllerAdvice {
@@ -323,6 +323,7 @@ class ControllerAdviceTests {
 		}
 	}
 
+
 	@ControllerAdvice
 	@Order(2)
 	static class SecondControllerAdvice {

spring-webflux/src/test/java/org/springframework/web/reactive/result/method/annotation/RequestParamMethodArgumentResolverTests.java

@@ -28,6 +28,7 @@ import reactor.test.StepVerifier;
 import org.springframework.core.MethodParameter;
 import org.springframework.core.ReactiveAdapterRegistry;
 import org.springframework.format.support.DefaultFormattingConversionService;
+import org.springframework.lang.Nullable;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.support.ConfigurableWebBindingInitializer;
 import org.springframework.web.reactive.BindingContext;
@@ -58,7 +59,6 @@ class RequestParamMethodArgumentResolverTests {
 
 	@BeforeEach
 	void setup() throws Exception {
-
 		ReactiveAdapterRegistry adapterRegistry = ReactiveAdapterRegistry.getSharedInstance();
 		this.resolver = new RequestParamMethodArgumentResolver(null, adapterRegistry, true);
 
@@ -70,7 +70,6 @@ class RequestParamMethodArgumentResolverTests {
 
 	@Test
 	void supportsParameter() {
-
 		MethodParameter param = this.testMethod.annot(requestParam().notRequired("bar")).arg(String.class);
 		assertThat(this.resolver.supportsParameter(param)).isTrue();
 
@@ -105,12 +104,12 @@ class RequestParamMethodArgumentResolverTests {
 
 	@Test
 	void doesNotSupportReactiveWrapper() {
-		assertThatIllegalStateException().isThrownBy(() ->
-				this.resolver.supportsParameter(this.testMethod.annot(requestParam()).arg(Mono.class, String.class)))
-			.withMessageStartingWith("RequestParamMethodArgumentResolver does not support reactive type wrapper");
-		assertThatIllegalStateException().isThrownBy(() ->
-				this.resolver.supportsParameter(this.testMethod.annotNotPresent(RequestParam.class).arg(Mono.class, String.class)))
-			.withMessageStartingWith("RequestParamMethodArgumentResolver does not support reactive type wrapper");
+		assertThatIllegalStateException()
+				.isThrownBy(() -> this.resolver.supportsParameter(this.testMethod.annot(requestParam()).arg(Mono.class, String.class)))
+				.withMessageStartingWith("RequestParamMethodArgumentResolver does not support reactive type wrapper");
+		assertThatIllegalStateException()
+				.isThrownBy(() -> this.resolver.supportsParameter(this.testMethod.annotNotPresent(RequestParam.class).arg(Mono.class, String.class)))
+				.withMessageStartingWith("RequestParamMethodArgumentResolver does not support reactive type wrapper");
 	}
 
 	@Test
@@ -125,19 +124,15 @@ class RequestParamMethodArgumentResolverTests {
 		MethodParameter param = this.testMethod.annotPresent(RequestParam.class).arg(String[].class);
 		MockServerHttpRequest request = MockServerHttpRequest.get("/path?name=foo&name=bar").build();
 		Object result = resolve(param, MockServerWebExchange.from(request));
-		boolean condition = result instanceof String[];
-		assertThat(condition).isTrue();
-		assertThat((String[]) result).isEqualTo(new String[] {"foo", "bar"});
+		assertThat(result).isEqualTo(new String[] {"foo", "bar"});
 	}
 
-	@Test // gh-32577
+	@Test  // gh-32577
 	void resolveStringArrayWithEmptyArraySuffix() {
 		MethodParameter param = this.testMethod.annotPresent(RequestParam.class).arg(String[].class);
 		MockServerHttpRequest request = MockServerHttpRequest.get("/path?name[]=foo&name[]=bar").build();
 		Object result = resolve(param, MockServerWebExchange.from(request));
-		boolean condition = result instanceof String[];
-		assertThat(condition).isTrue();
-		assertThat((String[]) result).isEqualTo(new String[] {"foo", "bar"});
+		assertThat(result).isEqualTo(new String[] {"foo", "bar"});
 	}
 
 	@Test
@@ -146,7 +141,7 @@ class RequestParamMethodArgumentResolverTests {
 		assertThat(resolve(param, MockServerWebExchange.from(MockServerHttpRequest.get("/")))).isEqualTo("bar");
 	}
 
-	@Test // SPR-17050
+	@Test  // SPR-17050
 	public void resolveAndConvertNullValue() {
 		MethodParameter param = this.testMethod
 				.annot(requestParam().notRequired())
@@ -156,7 +151,6 @@ class RequestParamMethodArgumentResolverTests {
 
 	@Test
 	void missingRequestParam() {
-
 		MockServerWebExchange exchange = MockServerWebExchange.from(MockServerHttpRequest.get("/"));
 		MethodParameter param = this.testMethod.annotPresent(RequestParam.class).arg(String[].class);
 		Mono<Object> mono = this.resolver.resolveArgument(param, this.bindContext, exchange);
@@ -221,6 +215,7 @@ class RequestParamMethodArgumentResolverTests {
 	}
 
 
+	@Nullable
 	private Object resolve(MethodParameter parameter, ServerWebExchange exchange) {
 		return this.resolver.resolveArgument(parameter, this.bindContext, exchange).block(Duration.ZERO);
 	}