Added option to disable adding custom publication; fixes #482

spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/main/groovy/org/springframework/cloud/contract/verifier/plugin/ContractVerifierExtension.groovy

@@ -169,6 +169,15 @@ class ContractVerifierExtension {
 		closure.call()
 	}
 
+	/**
+	 * Is set to true will not provide the default publication task
+	 */
+	boolean disableStubPublication = false
+
+	void disableStubPublication(boolean disableStubPublication) {
+		this.disableStubPublication = disableStubPublication
+	}
+
 	@ToString
 	static class Dependency {
 		String groupId

spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/main/groovy/org/springframework/cloud/contract/verifier/plugin/SpringCloudContractVerifierGradlePlugin.groovy

@@ -60,7 +60,7 @@ class SpringCloudContractVerifierGradlePlugin implements Plugin<Project> {
 		setConfigurationDefaults(extension)
 		Task stubsJar = createAndConfigureStubsJarTasks(extension)
 		Task copyContracts = createAndConfigureCopyContractsTask(stubsJar, downloader, extension)
-		createAndConfigureMavenPublishPlugin(stubsJar)
+		createAndConfigureMavenPublishPlugin(stubsJar, extension)
 		createGenerateTestsTask(extension, copyContracts)
 		Task clientTask = createAndConfigureGenerateClientStubsFromDslTask(extension, copyContracts)
 		createAndConfigureGenerateWireMockClientStubsFromDslTask(extension, clientTask)
@@ -176,13 +176,17 @@ class SpringCloudContractVerifierGradlePlugin implements Plugin<Project> {
 		return task
 	}
 
-	private void createAndConfigureMavenPublishPlugin(Task stubsTask) {
+	private void createAndConfigureMavenPublishPlugin(Task stubsTask, ContractVerifierExtension extension) {
 		if (!classIsOnClasspath("org.gradle.api.publish.maven.plugins.MavenPublishPlugin")) {
 			project.logger.debug("Maven Publish Plugin is not present - won't add default publication")
 			return
 		}
 		project.logger.debug("Spring Cloud Contract Verifier Plugin: Generating default publication")
 		project.afterEvaluate {
+			if (extension.isDisableStubPublication()) {
+				project.logger.info("You've switched off the stub publication - won't add default publication")
+				return
+			}
 			project.plugins.withType(MavenPublishPlugin) { def publishingPlugin ->
 				def publishingExtension = project.extensions.findByName('publishing')
 				if (!hasPublication(publishingExtension)) {

spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/groovy/org/springframework/cloud/contract/verifier/plugin/ContractVerifierIntegrationSpec.groovy

@@ -73,11 +73,12 @@ abstract class ContractVerifierIntegrationSpec extends Specification {
 		Files.write(path, content.getBytes(UTF_8))
 	}
 
-	protected void runTasksSuccessfully(String... tasks) {
+	protected BuildResult runTasksSuccessfully(String... tasks) {
 		BuildResult result = run(tasks)
 		result.tasks.each {
 			assert it.outcome == TaskOutcome.SUCCESS || it.outcome == TaskOutcome.UP_TO_DATE || it.outcome == TaskOutcome.NO_SOURCE
 		}
+		return result
 	}
 
 	protected BuildResult validateTasksOutcome(BuildResult result, TaskOutcome expectedOutcome, String... tasks) {
@@ -134,7 +135,7 @@ abstract class ContractVerifierIntegrationSpec extends Specification {
 	}
 
 	protected File getBuildFile() {
-		return new File('build.gradle', testProjectDir)
+		return new File(testProjectDir, 'build.gradle')
 	}
 
 	protected boolean jarContainsContractVerifierContracts(String path) {

spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/groovy/org/springframework/cloud/contract/verifier/plugin/GradleContractsDownloaderSpec.groovy

@@ -146,6 +146,7 @@ class GradleContractsDownloaderSpec extends Specification {
 					repositoryUrl("foo")
 					cacheDownloadedContracts(false)
 				}
+				disableStubPublication(true)
 			}
 		and:
 			final AetherStubDownloader downloader = Mock(AetherStubDownloader)

spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/groovy/org/springframework/cloud/contract/verifier/plugin/SampleJerseyProjectSpec.groovy

@@ -16,6 +16,7 @@
 
 package org.springframework.cloud.contract.verifier.plugin
 
+import org.gradle.testkit.runner.BuildResult
 import spock.lang.Stepwise
 
 @Stepwise
@@ -30,8 +31,19 @@ class SampleJerseyProjectSpec extends ContractVerifierIntegrationSpec {
 		given:
 			assert fileExists('build.gradle')
 		expect:
-			runTasksSuccessfully(checkAndPublishToMavenLocal())
+			BuildResult result = runTasksSuccessfully(checkAndPublishToMavenLocal())
 			jarContainsContractVerifierContracts('fraudDetectionService/build/libs')
+			!result.output.contains("You've switched off the stub publication")
+	}
+
+	def "should pass basic flow for Spock with disabled publication"() {
+		given:
+			assert fileExists('build.gradle')
+		expect:
+			String[] args = (checkAndPublishToMavenLocal().toList() << "-PdisablePublication") as String[]
+			BuildResult result = runTasksSuccessfully(args)
+			!fileExists('fraudDetectionService/build/libs')
+			result.output.contains("You've switched off the stub publication")
 	}
 
 	def "should pass basic flow for JUnit"() {

spring-cloud-contract-tools/spring-cloud-contract-gradle-plugin/src/test/resources/functionalTest/sampleJerseyProject/build.gradle

@@ -130,6 +130,7 @@ configure(project(':fraudDetectionService')) {
 		}
 		generatedTestSourcesDir = file("${project.buildDir}/generated-test-sources/")
 		stubsOutputDir = stubsOutputDirRoot
+		disableStubPublication(project.hasProperty("disablePublication"))
 	}
 }