output.count("Transforming") == 1
    }

    def "notifies transform listeners and build operation listeners on successful execution"() {
        def buildOperations = new BuildOperationsFixture(executer, temporaryFolder)

        given:
        buildFile << """
            import org.gradle.api.internal.artifacts.transform.TransformExecutionListener
            import org.gradle.internal.event.ListenerManager

        given:
        AGP_VERSIONS.assumeCurrentJavaVersionIsSupportedBy(agpVersion)

        and:
        def originalDir = temporaryFolder.createDir("original")
        def relocatedDir = temporaryFolder.createDir("relocated")

        and:
        setupCopyOfSantaTracker(originalDir)
        setupCopyOfSantaTracker(relocatedDir)

        when: 'clean build'

    }

    Set<TestFile> projectOutputDirs(String from, String to, Closure<String> stream = { output }) {
        def parts = [Pattern.quote(temporaryFolder.getTestDirectory().absolutePath) + ".*", "build", ".transforms", "[\\w-]+", "transformed"]
        return outputDirs(from, to, parts.join(quotedFileSeparator), stream)
    }