@Test
  public void testAppleLibraryWithDefaultsInRuleBuildsSomething() throws IOException {
    assumeTrue(Platform.detect() == Platform.MACOS);
    ProjectWorkspace workspace =
        TestDataHelper.createProjectWorkspaceForScenario(
            this, "apple_library_with_platform_and_type", tmp);
    workspace.setUp();
    ProjectFilesystem filesystem = new ProjectFilesystem(workspace.getDestPath());

    BuildTarget target = BuildTargetFactory.newInstance("//Libraries/TestLibrary:TestLibrary");
    ProjectWorkspace.ProcessResult result =
        workspace.runBuckCommand("build", target.getFullyQualifiedName());
    result.assertSuccess();

    BuildTarget implicitTarget =
        target.withAppendedFlavors(
            ImmutableFlavor.of("shared"), ImmutableFlavor.of("iphoneos-arm64"));
    Path outputPath = workspace.getPath(BuildTargets.getGenPath(filesystem, implicitTarget, "%s"));
    assertTrue(Files.exists(outputPath));
  }
  @Test
  public void testAppleLibraryWithDefaultsInConfigBuildsSomething() throws IOException {
    assumeTrue(Platform.detect() == Platform.MACOS);
    ProjectWorkspace workspace =
        TestDataHelper.createProjectWorkspaceForScenario(
            this, "apple_library_builds_something", tmp);
    workspace.setUp();
    ProjectFilesystem filesystem = new ProjectFilesystem(workspace.getDestPath());
    workspace.writeContentsToPath(
        "[defaults.apple_library]\n  platform = iphonesimulator-x86_64\n  type = shared\n",
        ".buckconfig.local");

    BuildTarget target = BuildTargetFactory.newInstance("//Libraries/TestLibrary:TestLibrary");
    ProjectWorkspace.ProcessResult result =
        workspace.runBuckCommand("build", target.getFullyQualifiedName());
    result.assertSuccess();

    BuildTarget implicitTarget =
        target.withAppendedFlavors(
            ImmutableFlavor.of("shared"), ImmutableFlavor.of("iphonesimulator-x86_64"));
    assertTrue(
        Files.exists(workspace.getPath(BuildTargets.getGenPath(filesystem, implicitTarget, "%s"))));
  }