Modularize spring-boot-test

Closes gh-46356

module/spring-boot-rsocket-test/build.gradle

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2012-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the License);
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+plugins {
+	id "java-library"
+	id "org.springframework.boot.deployed"
+	id "org.springframework.boot.optional-dependencies"
+	id "org.springframework.boot.test-auto-configuration"
+}
+
+description = "Spring Boot RSocket Test"
+
+dependencies {
+	api(project(":module:spring-boot-rsocket"))
+
+	testImplementation(project(":test-support:spring-boot-test-support"))
+
+	testRuntimeOnly("ch.qos.logback:logback-classic")
+}

module/spring-boot-rsocket-test/src/main/java/org/springframework/boot/test/rsocket/server/LocalRSocketServerPort.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2012-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.rsocket.server;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import org.springframework.beans.factory.annotation.Value;
+
+/**
+ * Annotation at the field or method/constructor parameter level that injects the RSocket
+ * port that was allocated at runtime. Provides a convenient alternative for
+ * <code>&#064;Value(&quot;${local.rsocket.server.port}&quot;)</code>.
+ *
+ * @author Verónica Vásquez
+ * @author Eddú Meléndez
+ * @since 2.7.0
+ */
+@Target({ ElementType.FIELD, ElementType.METHOD, ElementType.PARAMETER, ElementType.ANNOTATION_TYPE })
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+@Value("${local.rsocket.server.port}")
+public @interface LocalRSocketServerPort {
+
+}

module/spring-boot-rsocket-test/src/main/java/org/springframework/boot/test/rsocket/server/package-info.java

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2012-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * RSocket server test utilities and support classes.
+ */
+@NullMarked
+package org.springframework.boot.test.rsocket.server;
+
+import org.jspecify.annotations.NullMarked;

module/spring-boot-rsocket-test/src/test/java/org/springframework/boot/test/rsocket/server/LocalRSocketServerPortTests.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2012-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.rsocket.server;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link LocalRSocketServerPort @LocalRSocketServerPort}.
+ *
+ * @author Verónica Vásquez
+ * @author Eddú Meléndez
+ */
+@ExtendWith(SpringExtension.class)
+@TestPropertySource(properties = "local.rsocket.server.port=8181")
+class LocalRSocketServerPortTests {
+
+	@Value("${local.rsocket.server.port}")
+	private String fromValue;
+
+	@LocalRSocketServerPort
+	private String fromAnnotation;
+
+	@Test
+	void testLocalRSocketServerPortAnnotation() {
+		assertThat(this.fromAnnotation).isNotNull().isEqualTo(this.fromValue);
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class Config {
+
+	}
+
+}