+ describe('language selection', function () {
+ var origNavigator;
+ beforeEach(function () {
+ // window.navigator is a protected read-only property in many
+ // environments, so we need to redefine it whilst running these
+ // tests.
+ origNavigator = Object.getOwnPropertyDescriptor(window, "navigator");
+ if (origNavigator === undefined) {
+ // Object.getOwnPropertyDescriptor() doesn't work
+ // properly in any version of IE
+ this.skip();
+ }
+
+ Object.defineProperty(window, "navigator", {value: {}});
+ if (window.navigator.languages !== undefined) {
+ // Object.defineProperty() doesn't work properly in old
+ // versions of Chrome
+ this.skip();
+ }
+
+ window.navigator.languages = [];
+ });
+ afterEach(function () {
+ Object.defineProperty(window, "navigator", origNavigator);
+ });
+
+ it('should use English by default', function() {
+ expect(l10n.language).to.equal('en');
+ });
+ it('should use English if no user language matches', function() {
+ window.navigator.languages = ["nl", "de"];
+ l10n.setup(["es", "fr"]);
+ expect(l10n.language).to.equal('en');
+ });
+ it('should use the most preferred user language', function() {
+ window.navigator.languages = ["nl", "de", "fr"];
+ l10n.setup(["es", "fr", "de"]);
+ expect(l10n.language).to.equal('de');
+ });
+ it('should prefer sub-languages languages', function() {
+ window.navigator.languages = ["pt-BR"];
+ l10n.setup(["pt", "pt-BR"]);
+ expect(l10n.language).to.equal('pt-BR');
+ });
+ it('should fall back to language "parents"', function() {
+ window.navigator.languages = ["pt-BR"];
+ l10n.setup(["fr", "pt", "de"]);
+ expect(l10n.language).to.equal('pt');
+ });
+ it('should not use specific language when user asks for a generic language', function() {
+ window.navigator.languages = ["pt", "de"];
+ l10n.setup(["fr", "pt-BR", "de"]);
+ expect(l10n.language).to.equal('de');
+ });
+ it('should handle underscore as a separator', function() {
+ window.navigator.languages = ["pt-BR"];
+ l10n.setup(["pt_BR"]);
+ expect(l10n.language).to.equal('pt_BR');
+ });
+ it('should handle difference in case', function() {
+ window.navigator.languages = ["pt-br"];
+ l10n.setup(["pt-BR"]);
+ expect(l10n.language).to.equal('pt-BR');
+ });
+ });
+