PathIsDevice(pathname string) (bool, error)
	// GetDeviceNameFromMount finds the device name by checking the mount path
	// to get the global mount path within its plugin directory.
	// TODO: Remove this method once the rbd and vsphere plugins are removed from in-tree.
	GetDeviceNameFromMount(mounter mount.Interface, mountPath, pluginMountDir string) (string, error)
	// MakeRShared checks that given path is on a mount with 'rshared' mount

    }

    def "finds vswhere executable in system path"() {
        given:
        vswhereInPath()

        expect:
        locator.getVswhereInstall().absolutePath == vswhere.absolutePath
    }

    def "finds vswhere executable in system path if vswhere executable in Program Files is not a file"() {

        x86Registry()
        vswhere = programFiles.createDir("Microsoft Visual Studio/Installer").createFile("vswhere.exe")
    }

    void vswhereInProgramFilesX86() {
        x64Registry()
        vswhere = programFilesX86.createDir("Microsoft Visual Studio/Installer").createFile("vswhere.exe")
    }

    void vswhereNotFound() {
        x64Registry()
    }

    void vswhereNotFoundX86Registry() {
        x86Registry()

    def locator = new CommandLineToolVersionLocator(execActionFactory, visualCppMetadataProvider, vswhereLocator)

    def setup() {
        _ * vswhereLocator.getVswhereInstall() >> { vswhere }
    }

    def "finds all versions of visual studio using vswhere"() {
        given:
        validInstallations()
        vswhereInProgramFiles()
        vswhereResults(vsWhereManyVersions(localRoot))

        when:

        } else {
            vsVersion = VersionNumber.version(15);
        }

        File vswhere = vswhereLocator.getVswhereInstall();
        if (vswhere == null) {
            throw new IllegalStateException("vswhere tool is required to be installed");
        }

    private static final String VISUAL_STUDIO_INSTALLER = "Microsoft Visual Studio/Installer";
    private static final String VSWHERE_EXE = "vswhere.exe";

    public DefaultVswhereVersionLocator(WindowsRegistry windowsRegistry, OperatingSystem os) {
        this.windowsRegistry = windowsRegistry;
        this.os = os;
    }

    @Override

        ExecResult result = exec.execute();

        int exitValue = result.getExitValue();
        if (exitValue == 0) {
            return buffer.readAsString("UTF-8");
        } else {
            LOGGER.debug("vswhere.exe returned a non-zero exit value ({}) - ignoring", result.getExitValue());
            return null;
        }
    }

    private List<VisualStudioInstallCandidate> parseJson(String json) {