}
            }

            task createFile1(type: FileOutputTask)
            task createFile2(type: FileOutputTask)
            task merge(type: MergeTask) {
                outputFile = layout.buildDirectory.file("merged.txt")
                inputFiles.add(createFile1.outputFile)
                inputFiles.add(createFile2.outputFile)
            }

            // Set values lazily

            }

            task createFile(type: FileOutputTask)
            task merge(type: FileOutputTask) {
                outputFile = layout.buildDirectory.file("merged.txt")
                inputFile = createFile.outputFile
            }

            // Set values lazily
            createFile.inputFile = layout.projectDirectory.file("file-source.txt")

       return tempDir.testDirectory.file(JavaCompilerArgumentsBuilder.EMPTY_SOURCE_PATH_REF_DIR).absolutePath
    }

    def createCompileSpec(numFiles) {
        def sources = createFiles(numFiles)
        def classpath = createFiles(numFiles)
        def spec = new DefaultJavaCompileSpec()
        spec.compileOptions = TestUtil.newInstance(CompileOptions, TestUtil.objectFactory())

		// https://learn.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-createfilew#consoles.
		// We haven't set it previously because it is normally not required
		// to read attributes and some files may not allow it.
		h, err = syscall.CreateFile(namep, syscall.GENERIC_READ, 0, nil, syscall.OPEN_EXISTING, flags, 0)
	}
	if err != nil {
		// Since CreateFile failed, we can't determine whether name refers to a

    final missingOutputDir = temporaryFolder.file("missing-output-dir")
    final inputFile = temporaryFolder.createFile("input-file")
    final inputDir = temporaryFolder.createDir("input-dir")
    final inputDirFile = inputDir.file("input-file2").createFile()
    final missingInputFile = temporaryFolder.file("missing-input-file")

        given:
        file('files/one.txt').createFile()
        file('files/a/two.txt').createFile()
        file('files/a/IGNORE.txt').createFile()
        file('files/b/ignore.txt').createFile()
        file('files/b/one.bin').createFile()
        file('files/b/wrong case.TXT').createFile()
        file('other/c/other-one.txt').createFile()
        file('other/c/other-ignore.txt').createFile()
        buildFile """

        def f3 = d.createFile("c.cc")
        d.createFile("ignore.txt")
        d.createFile("other/ignore.txt")

        expect:
        component.source.from(d)
        component.cppSource.files == [f1, f2, f3] as Set
    }

    def "uses source layout convention when no other source files specified"() {
        def f1 = tmpDir.createFile("src/main/cpp/a.cpp")
        def f2 = tmpDir.createFile("src/main/cpp/nested/b.cpp")

        given:
        file('files/one.txt').createFile()
        file('files/a/one.txt').createFile()
        file('files/a/not ONE.txt').createFile()
        file('files/b/ignore.txt').createFile()
        file('files/b/not one to IGNORE.txt').createFile()
        file('files/b/one.ignore').createFile()
        buildFile """
            def files = fileTree(dir: 'files')

        given:
        file("repo/a.jar").createFile()
        file("repo/a-1.4.jar").createFile()
        file("repo/a-1.5.jar").createFile()
        file("repo/a-2.0.jar").createFile()
        file("repo/b-1.4-classifier.jar").createFile()
        file("repo/b-1.5-classifier.jar").createFile()
        file("repo/b-1.6.jar").createFile()

        and:
        buildFile << """

        d.createFile("other/ignore.txt")

        expect:
        component.source.from(d)
        component.swiftSource.files == [f1, f2] as Set
    }

    def "uses source layout convention when no other source files specified"() {
        def f1 = tmpDir.createFile("src/main/swift/a.swift")
        def f2 = tmpDir.createFile("src/main/swift/nested/b.swift")
        tmpDir.createFile("src/main/swift/ignore-me.cpp")