Split gradle test support into a separate module

See gh-25824

settings.gradle

@@ -55,6 +55,7 @@ include "spring-boot-project:spring-boot-tools:spring-boot-buildpack-platform"
 include "spring-boot-project:spring-boot-tools:spring-boot-configuration-metadata"
 include "spring-boot-project:spring-boot-tools:spring-boot-configuration-processor"
 include "spring-boot-project:spring-boot-tools:spring-boot-gradle-plugin"
+include "spring-boot-project:spring-boot-tools:spring-boot-gradle-test-support"
 include "spring-boot-project:spring-boot-tools:spring-boot-jarmode-layertools"
 include "spring-boot-project:spring-boot-tools:spring-boot-loader"
 include "spring-boot-project:spring-boot-tools:spring-boot-loader-tools"

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/build.gradle

@@ -25,6 +25,7 @@ dependencies {
 	optional("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion")
 
 	testImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-test-support"))
+	testImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-gradle-test-support"))
 	testImplementation("org.assertj:assertj-core")
 	testImplementation("org.junit.jupiter:junit-jupiter")
 	testImplementation("org.mockito:mockito-core")

spring-boot-project/spring-boot-tools/spring-boot-gradle-test-support/build.gradle

@@ -0,0 +1,22 @@
+plugins {
+	id "java-library"
+	id "org.springframework.boot.conventions"
+}
+
+description = "Spring Boot Gradle Testing Support"
+
+dependencies {
+	compileOnly("org.junit.jupiter:junit-jupiter")
+
+	implementation(gradleTestKit())
+	implementation(project(":spring-boot-project:spring-boot-tools:spring-boot-buildpack-platform"))
+	implementation(project(":spring-boot-project:spring-boot-tools:spring-boot-loader-tools"))
+	implementation("io.spring.gradle:dependency-management-plugin")
+	implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion")
+	implementation("org.jetbrains.kotlin:kotlin-compiler-embeddable:$kotlinVersion")
+	implementation("org.jetbrains.kotlin:kotlin-compiler-runner:$kotlinVersion")
+	implementation("org.jetbrains.kotlin:kotlin-daemon-client:$kotlinVersion")
+	implementation("org.apache.commons:commons-compress")
+
+	implementation("org.assertj:assertj-core")
+}

spring-boot-project/spring-boot-tools/spring-boot-gradle-test-support/src/main/java/org/springframework/boot/testsupport/gradle/testkit/GradleBuild.java

@@ -65,6 +65,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  * A {@code GradleBuild} is used to run a Gradle build using {@link GradleRunner}.
  *
  * @author Andy Wilkinson
+ * @author Scott Frederick
  */
 public class GradleBuild {
 

spring-boot-project/spring-boot-tools/spring-boot-gradle-test-support/src/main/java/org/springframework/boot/testsupport/gradle/testkit/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2021 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.
+ */
+
+/**
+ * Classes for testing with Gradle.
+ */
+package org.springframework.boot.testsupport.gradle.testkit;

spring-boot-project/spring-boot-tools/spring-boot-test-support/build.gradle

@@ -20,16 +20,6 @@ dependencies {
 	compileOnly("org.springframework.data:spring-data-redis")
 	compileOnly("org.testcontainers:testcontainers")
 
-	compileOnly(project(":spring-boot-project:spring-boot-tools:spring-boot-buildpack-platform"))
-	compileOnly(project(":spring-boot-project:spring-boot-tools:spring-boot-loader-tools"))
-	compileOnly("io.spring.gradle:dependency-management-plugin")
-	compileOnly(gradleTestKit())
-	compileOnly("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion")
-	compileOnly("org.jetbrains.kotlin:kotlin-compiler-embeddable:$kotlinVersion")
-	compileOnly("org.jetbrains.kotlin:kotlin-compiler-runner:$kotlinVersion")
-	compileOnly("org.jetbrains.kotlin:kotlin-daemon-client:$kotlinVersion")
-	compileOnly("org.apache.commons:commons-compress")
-
 	implementation("org.apache.maven.resolver:maven-resolver-connector-basic")
 	implementation("org.apache.maven.resolver:maven-resolver-impl")
 	implementation("org.apache.maven:maven-resolver-provider")

spring-boot-system-tests/spring-boot-image-tests/build.gradle

@@ -26,16 +26,9 @@ dependencies {
 	}
 
 	systemTestImplementation(project(":spring-boot-project:spring-boot-starters:spring-boot-starter-test"))
-	systemTestImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-test-support"))
+	systemTestImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-gradle-test-support"))
 	systemTestImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-buildpack-platform"))
-	systemTestImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-loader-tools"))
-	systemTestImplementation("io.spring.gradle:dependency-management-plugin")
 	systemTestImplementation(gradleTestKit())
-	systemTestImplementation("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion")
-	systemTestImplementation("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion")
-	systemTestImplementation("org.jetbrains.kotlin:kotlin-compiler-embeddable:$kotlinVersion")
-	systemTestImplementation("org.jetbrains.kotlin:kotlin-compiler-runner:$kotlinVersion")
-	systemTestImplementation("org.jetbrains.kotlin:kotlin-daemon-client:$kotlinVersion")
 	systemTestImplementation("org.assertj:assertj-core")
 	systemTestImplementation("org.testcontainers:junit-jupiter")
 	systemTestImplementation("org.testcontainers:testcontainers")

src/checkstyle/checkstyle-suppressions.xml

@@ -46,6 +46,7 @@
 	<suppress files="[\\/]spring-boot-smoke-tests[\\/]" checks="SpringJavadoc" message="\@since" />
 	<suppress files="[\\/]spring-boot-smoke-tests[\\/]spring-boot-smoke-test-testng[\\/]" checks="SpringJUnit5" />
 	<suppress files="[\\/]spring-boot-test-support[\\/]" checks="SpringJavadoc" message="\@since" />
+	<suppress files="[\\/]spring-boot-gradle-test-support[\\/]" checks="SpringJavadoc" message="\@since" />
 	<suppress files="[\\/]src[\\/]intTest[\\/]java[\\/]" checks="SpringJavadoc" message="\@since" />
 	<suppress files="[\\/]src[\\/]systemTest[\\/]java[\\/]" checks="SpringJavadoc" message="\@since" />
 	<suppress files="LinuxDomainSocket" checks="FinalClass" message="SockaddrUn" />