outputs.recompiledClasses('renamed-sum')
        } else {
            outputs.recompiledClasses('greeter', 'renamed-sum', 'main')
        }

        outputDirectory.assertContainsDescendants(expectedIntermediateDescendants(app.alternate))
        installation("build/install/main/debug").exec().out == app.expectedAlternateOutput
    }

    def "removes stale object files for library"() {

     * Asserts that this is a directory and contains the given set of descendant files (and possibly other files). Ignores directories that are not empty.
     */
    public TestFile assertContainsDescendants(String... descendants) {
        return assertContainsDescendants(Arrays.asList(descendants));
    }

    public TestFile assertIsEmptyDir() {
        assertHasDescendants();
        return this;
    }

            def outputDirectories = file(pchHeaderDirName).listFiles().findAll { it.isDirectory() }
            assert outputDirectories.size() == 1
            outputDirectories[0].assertContainsDescendants("prefix-headers.${getSuffix()}")
        }
        true
    }

    def pchNotCompiled(String lib="hello", String linkage="shared", String sourceSet=app.sourceType) {

        !downloadedLibsDir.isDirectory()

        when:
        moduleA.pom.expectGet()
        moduleA.artifact.expectGet()
        succeeds('resolve')

        then:
        downloadedLibsDir.assertContainsDescendants('a-1.0.jar')
    }

    def "skips subsequent dependency resolution if HTTP connection exceeds timeout, and only prints original cause once"() {
        given:

                from tarTree('v7.tar')
                into 'dest'
            }
        """

        when:
        succeeds("copy")

        then:
        file("dest").assertContainsDescendants("file.txt", "sub/subfile.txt")
    }

    def cannotCreateAnEmptyZip() {
        given:
        buildFile << '''
            task zip(type: Zip) {
                from 'test'