given:
        vswhereInProgramFiles()

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

    def "finds vswhere executable in Program Files (X86)"() {
        given:
        vswhereInProgramFilesX86()

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

    def "finds vswhere executable in system path"() {

        def versionMetadata = locator.getVisualStudioInstalls()

        then:
        versionMetadata != null
        versionMetadata.size() == 0
        _ * vswhereLocator.getVswhereInstall() >> { new DefaultVswhereVersionLocator(windowsRegistry, os).getVswhereInstall() }
    }

    def "returns empty list if Program Files (X86) cannot be found in registry"() {
        given:
        vswhereNotFoundX86Registry()

        when:

 * limitations under the License.
 */

package org.gradle.nativeplatform.toolchain.internal.msvcpp.version;

import java.io.File;

public interface VswhereVersionLocator {
    File getVswhereInstall();

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

    @Override
    public File getVswhereInstall() {
        for (String programFilesKey : PROGRAM_FILES_KEYS) {
            File programFilesDir;
            try {

    }

    @Override
    protected List<VisualStudioInstallCandidate> locateInstalls() {
        List<VisualStudioInstallCandidate> installs = new ArrayList<>();

        File vswhereBinary = vswhereLocator.getVswhereInstall();
        if (vswhereBinary != null) {
            List<String> args = Lists.newArrayList("-all", "-legacy", "-format", "json", "-utf8");
            String json = getVswhereOutput(vswhereBinary, args);

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

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