spring-security-samples/servlet/java-configuration/hello-mvc-security/gradle/gretty.gradle

gretty {
	servletContainer = "tomcat9"
	contextPath = "/"
	fileLogEnabled = false
	integrationTestTask = 'integrationTest'
}

Task prepareAppServerForIntegrationTests = project.tasks.create('prepareAppServerForIntegrationTests') {
	group = 'Verification'
	description = 'Prepares the app server for integration tests'
	doFirst {
		project.gretty {
			httpPort = -1
		}
	}
}

project.tasks.matching { it.name == "appBeforeIntegrationTest" }.all { task ->
	task.dependsOn prepareAppServerForIntegrationTests
}

project.tasks.matching { it.name == "integrationTest" }.all {
	task -> task.doFirst {
		def gretty = project.gretty
		String host = project.gretty.host ?: 'localhost'
		boolean isHttps = gretty.httpsEnabled
		Integer httpPort = integrationTest.systemProperties['gretty.httpPort']
		Integer httpsPort = integrationTest.systemProperties['gretty.httpsPort']
		int port = isHttps ? httpsPort : httpPort
		String contextPath = project.gretty.contextPath
		String httpBaseUrl = "http://${host}:${httpPort}${contextPath}"
		String httpsBaseUrl = "https://${host}:${httpsPort}${contextPath}"
		String baseUrl = isHttps ? httpsBaseUrl : httpBaseUrl
		integrationTest.systemProperty 'app.port', port
		integrationTest.systemProperty 'app.httpPort', httpPort
		integrationTest.systemProperty 'app.httpsPort', httpsPort
		integrationTest.systemProperty 'app.baseURI', baseUrl
		integrationTest.systemProperty 'app.httpBaseURI', httpBaseUrl
		integrationTest.systemProperty 'app.httpsBaseURI', httpsBaseUrl
	}
}