"type": "string"
          },
          "preferredVersion": {
            "allOf": [
              {
                "$ref": "#/components/schemas/io.k8s.apimachinery.pkg.apis.meta.v1.GroupVersionForDiscovery"
              }
            ],
            "default": {},
            "description": "preferredVersion is the version preferred by the API server, which probably is the storage version."

            "type": "string"
          },
          "preferredVersion": {
            "allOf": [
              {
                "$ref": "#/components/schemas/io.k8s.apimachinery.pkg.apis.meta.v1.GroupVersionForDiscovery"
              }
            ],
            "default": {},
            "description": "preferredVersion is the version preferred by the API server, which probably is the storage version."

            "type": "string"
          },
          "preferredVersion": {
            "allOf": [
              {
                "$ref": "#/components/schemas/io.k8s.apimachinery.pkg.apis.meta.v1.GroupVersionForDiscovery"
              }
            ],
            "default": {},
            "description": "preferredVersion is the version preferred by the API server, which probably is the storage version."

            "type": "string"
          },
          "preferredVersion": {
            "allOf": [
              {
                "$ref": "#/components/schemas/io.k8s.apimachinery.pkg.apis.meta.v1.GroupVersionForDiscovery"
              }
            ],
            "default": {},
            "description": "preferredVersion is the version preferred by the API server, which probably is the storage version."

        then:
        selector.group == ""
        selector.module == "gradle-core"
        selector.version == ""
        selector.versionConstraint.preferredVersion == ""
    }

    def "test create from module dependency"() {
        when:
        def configuration = withArtifacts ? null : TEST_DEP_CONF

		GroupVersion: extensionsGroupName + "/preferred",
		Version:      "preferred",
	}
	handler.AddGroup(metav1.APIGroup{
		Name:             extensionsGroupName,
		Versions:         extensionsVersions,
		PreferredVersion: extensionsPreferredVersion,
	})

	groupList, err = getGroupList(t, server)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}

	assert.Equal(t, 1, len(groupList.Groups))

			results = append(results, outputapiv1alpha3.ComponentConfigVersionState{
				Group:            group,
				CurrentVersion:   handler.GroupVersion.Version, // Currently kubeadm supports only one version per API
				PreferredVersion: handler.GroupVersion.Version, // group so we can get away with these being the same
			})
		} else {
			// This config was either not present (user did not install an addon) or the config was unsupported kubeadm

        return new ArrayList<>(dependencies);
    }

    private ImmutableVersionConstraint consumeVersion(JsonReader reader) throws IOException {
        String requiredVersion = "";
        String preferredVersion = "";
        String strictVersion = "";
        List<String> rejects = new ArrayList<>();

        reader.beginObject();
        while (reader.peek() != END_OBJECT) {

	fakeKnownContext(func() {
		versionStateCurrent := outputapiv1alpha3.ComponentConfigVersionState{
			Group:            kubeadmapiv1.GroupName,
			CurrentVersion:   currentClusterConfigVersion,
			PreferredVersion: currentClusterConfigVersion,
		}

		cases := []struct {
			desc        string
			obj         runtime.Object
			expectedErr bool
			expected    outputapiv1alpha3.ComponentConfigVersionState
		}{

    void "has reasonable default values"() {
        expect:
        dependency.group == "org.gradle"
        dependency.name == "gradle-core"
        dependency.version == "4.4-beta2"
        dependency.versionConstraint.preferredVersion == ""
        dependency.versionConstraint.requiredVersion == "4.4-beta2"
        dependency.versionConstraint.strictVersion == ""
        dependency.versionConstraint.rejectedVersions == []
        dependency.transitive