func TestLoadFromReader(t *testing.T) {
	// no reader
	{
		config, err := LoadFromReader(nil)
		if err != nil {
			t.Fatalf("unexpected err: %v", err)
		}
		if !reflect.DeepEqual(config, defaultConfig) {
			t.Fatalf("unexpected config:\n%s", cmp.Diff(defaultConfig, config))
		}
	}

	// empty reader
	{
		config, err := LoadFromReader(&bytes.Buffer{})
		if err != nil {
			t.Fatalf("unexpected err: %v", err)

}

func LoadFromFile(file string) (*api.AuthorizationConfiguration, error) {
	data, err := os.ReadFile(file)
	if err != nil {
		return nil, err
	}
	return LoadFromData(data)
}

func LoadFromReader(reader io.Reader) (*api.AuthorizationConfiguration, error) {
	if reader == nil {
		// no reader specified, use default config
		return LoadFromData(nil)
	}

	data, err := io.ReadAll(reader)
	if err != nil {

    @Rule
    public TestNameTestDirectoryProvider tmpDir = new TestNameTestDirectoryProvider(getClass());
    final Project project = new Project(new XmlTransformer())

    def loadFromReader() {
        when:
        project.load(customProjectReader)

        then:
        project.name == 'test'
        project.comment == 'for testing'
        project.referencedProjects == CUSTOM_REFERENCED_PROJECTS

    final customModules = [path('file://$PROJECT_DIR$/gradle-idea-plugin.iml')]
    final customWildcards = ["?*.gradle", "?*.grails"] as Set

    Project project = new Project(new XmlTransformer(), pathFactory)

    def loadFromReader() {
        when:
        project.load(customProjectReader)

        then:
        project.modulePaths as Set == customModules as Set
        project.wildcards == customWildcards

            new ModuleDependency('someModule', null)]

    Module module = new Module(xmlTransformer, pathFactory)

    def loadFromReader() {
        when:
        module.load(customModuleReader)

        then:
        module.jdkName == "1.6"
        module.sourceFolders == customSourceFolders

	})
	return defaultRecorder
}

// newPlugin creates a new admission plugin.
func newPlugin(reader io.Reader) (*Plugin, error) {
	config, err := podsecurityconfigloader.LoadFromReader(reader)
	if err != nil {
		return nil, err
	}

	evaluator, err := policy.NewEvaluator(policy.DefaultChecks())
	if err != nil {
		return nil, fmt.Errorf("could not create PodSecurityRegistry: %w", err)

		// Remove this check when https://github.com/docker/cli/pull/3434 is merged.
		return nil, fmt.Errorf("")
	}
	reader := bytes.NewReader(k.data)
	cf := configfile.ConfigFile{}
	if err := cf.LoadFromReader(reader); err != nil {
		return nil, err
	}
	key := target.RegistryStr()
	if key == name.DefaultRegistry {
		key = authn.DefaultAuthKey
	}
	cfg, err := cf.GetAuthConfig(key)
	if err != nil {