103 localization tests

jest.config.js

@@ -1,5 +1,5 @@
 module.exports = {
-  setupTestFrameworkScriptFile: '<rootDir>/jest.setup.ts',
+  setupFilesAfterEnv: ['<rootDir>/jest.setup.ts'],
 
   transform: {
     '^.+\\.tsx?$': 'ts-jest',
@@ -21,7 +21,6 @@ module.exports = {
     'ContainersProvider\.tsx$': '<rootDir>/src/core/__mocks__/fileMock.ts',
   },
 
-  mapCoverage: true,
   coverageDirectory: '<rootDir>/coverage',
   collectCoverageFrom: [
     '**/src/**/*.{ts,tsx}',

src/services/i18n/view/LanguageSelector/__tests__/index.test.ts

@@ -0,0 +1,53 @@
+import { makeShallowRenderer, getMockedLocaleProps } from 'shared/helpers';
+import { ITranslationProps } from 'services/i18n';
+import { Select } from 'shared/view/elements';
+
+import { LanguageSelector } from '../LanguageSelector';
+
+const props: ITranslationProps = {
+  ...getMockedLocaleProps(),
+};
+
+const getComponent = makeShallowRenderer(LanguageSelector, props);
+
+describe('(services/i18n) LanguageSelector component', () => {
+  it('should render one Select', () => {
+    const component = getComponent();
+    expect(component.find(Select).length).toEqual(1);
+  });
+
+  it('should call changeLanguage', () => {
+    const changeLanguage = jest.fn();
+    const newProps = {
+      ...props,
+      i18n: {
+        ...props.i18n,
+        changeLanguage,
+      },
+    };
+    const component = getComponent(newProps);
+
+    component.find(Select).simulate('change', { target: { value: 'ru-RU' } });
+
+    expect(changeLanguage).toBeCalledTimes(1);
+    expect(changeLanguage).toBeCalledWith('ru-RU');
+  });
+
+  it('should render select with en-US default language', () => {
+    const component = getComponent();
+
+    expect(component.find(Select).props().value).toEqual('en-US');
+  });
+
+  it('should get correct options', () => {
+    const expectedOptions = [{
+      label: 'English', value: 'en-US',
+    }, {
+      label: 'Русский', value: 'ru-RU',
+    }];
+    const component = getComponent();
+    const select = component.find(Select);
+
+    expect(select.props().options).toEqual(expectedOptions);
+  });
+});

src/shared/helpers/tests/mockLocaleProps.ts

@@ -5,8 +5,8 @@ export const getMockedLocaleProps: () => ITranslationProps = () => ({
   tReady: true,
   i18n: {
     isInitialized: true,
-    language: 'en',
-    languages: ['en', 'ru'],
+    language: 'en-US',
+    languages: ['en-US', 'ru-RU'],
     options: {},
     services: {
       backendConnector: {},