Add nullability annotations to tests in module/spring-boot-data-couchbase-test

See gh-47263

module/spring-boot-data-couchbase-test/build.gradle

@@ -39,6 +39,8 @@ dependencies {
 	dockerTestImplementation("org.testcontainers:junit-jupiter")
 	dockerTestImplementation("org.testcontainers:testcontainers")
 
+	dockerTestCompileOnly("com.google.code.findbugs:jsr305")
+
 	testImplementation(project(":test-support:spring-boot-test-support"))
 
 	testRuntimeOnly("ch.qos.logback:logback-classic")
@@ -47,3 +49,7 @@ dependencies {
 tasks.named("compileTestJava") {
 	options.nullability.checking = "tests"
 }
+
+tasks.named("compileDockerTestJava") {
+	options.nullability.checking = "tests"
+}

module/spring-boot-data-couchbase-test/src/dockerTest/java/org/springframework/boot/data/couchbase/test/autoconfigure/DataCouchbaseTestReactiveIntegrationTests.java

@@ -65,6 +65,7 @@ class DataCouchbaseTestReactiveIntegrationTests {
 		ExampleDocument document = new ExampleDocument();
 		document.setText("Look, new @DataCouchbaseTest!");
 		document = this.exampleReactiveRepository.save(document).block(Duration.ofSeconds(30));
+		assertThat(document).isNotNull();
 		assertThat(document.getId()).isNotNull();
 		assertThat(this.couchbaseTemplate.getBucketName()).isEqualTo(BUCKET_NAME);
 		this.exampleReactiveRepository.deleteAll();

module/spring-boot-data-couchbase-test/src/dockerTest/java/org/springframework/boot/data/couchbase/test/autoconfigure/ExampleDocument.java

@@ -16,6 +16,8 @@
 
 package org.springframework.boot.data.couchbase.test.autoconfigure;
 
+import org.jspecify.annotations.Nullable;
+
 import org.springframework.data.annotation.Id;
 import org.springframework.data.couchbase.core.mapping.Document;
 import org.springframework.data.couchbase.core.mapping.id.GeneratedValue;
@@ -31,9 +33,10 @@ public class ExampleDocument {
 
 	@Id
 	@GeneratedValue(strategy = GenerationStrategy.UNIQUE)
+	@SuppressWarnings("NullAway.Init")
 	private String id;
 
-	private String text;
+	private @Nullable String text;
 
 	public String getId() {
 		return this.id;
@@ -43,11 +46,11 @@ public class ExampleDocument {
 		this.id = id;
 	}
 
-	public String getText() {
+	public @Nullable String getText() {
 		return this.text;
 	}
 
-	public void setText(String text) {
+	public void setText(@Nullable String text) {
 		this.text = text;
 	}