@Issue("https://github.com/gradle/gradle/issues/15351")
    def "can transform a file dependency that contains a directory"() {
        taskTypeWithOutputDirectoryProperty()
        taskTypeLogsInputFileCollectionContent()
        transformDirectoryDependency()

        when:
        run("resolve")

        then:
        result.assertTaskExecuted(":producer")

        expect:
        succeeds("after")
        output.count("prop = " + file("build/text.out")) == 3
    }

    def "can query task output directory property at any time"() {
        taskTypeWithOutputDirectoryProperty()
        buildFile << """
            task producer(type: DirProducer) {
                output = layout.buildDir.dir("dir.out")
                names = ["a", "b"]
            }

                        file.delete()
                    } else {
                        file.writeText(content)
                    }
                }
            }
        """
    }

    def taskTypeWithOutputDirectoryProperty(TestFile buildFile = getBuildFile()) {
        buildFile << """
            import javax.inject.Inject

            abstract class DirProducer extends DefaultTask {
                @OutputDirectory

        result.assertTasksExecuted(":a", ":b")
        file("out.txt").text == "1"
    }

    def "input file collection containing filtered tree of task output implies dependency on the task"() {
        taskTypeWithOutputDirectoryProperty()
        taskTypeWithInputFileCollection()
        buildFile << """
            def task = tasks.create("a", DirProducer) {
                output = layout.buildDirectory.dir('dir')

            } finally {
                jarFile.close()
            }
        }
    }
}
"""
        taskTypeWithOutputFileProperty(buildFile)
        taskTypeWithOutputDirectoryProperty(buildFile)
        taskTypeLogsArtifactCollectionDetails(buildFile)
    }

    /**
     * Asserts that exactly the given files where transformed by the 'simple' transforms below
     */