[i18n] add get_kibana_translation_paths tests (elastic#81624)

Co-authored-by: Kibana Machine <42973632+kibanamachine@users.noreply.github.com>

src/legacy/server/i18n/get_kibana_translation_paths.test.ts

@@ -0,0 +1,58 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { I18N_RC } from './constants';
+import { fromRoot } from '../../../core/server/utils';
+
+jest.mock('./get_translation_paths', () => ({ getTranslationPaths: jest.fn() }));
+import { getKibanaTranslationPaths } from './get_kibana_translation_paths';
+import { getTranslationPaths as mockGetTranslationPaths } from './get_translation_paths';
+
+describe('getKibanaTranslationPaths', () => {
+  const mockConfig = { get: jest.fn() };
+
+  beforeEach(() => {
+    jest.resetAllMocks();
+  });
+
+  it('calls getTranslationPaths against kibana root and kibana-extra', async () => {
+    mockConfig.get.mockReturnValue([]);
+    await getKibanaTranslationPaths(mockConfig);
+    expect(mockGetTranslationPaths).toHaveBeenNthCalledWith(1, {
+      cwd: fromRoot('.'),
+      glob: `*/${I18N_RC}`,
+    });
+
+    expect(mockGetTranslationPaths).toHaveBeenNthCalledWith(2, {
+      cwd: fromRoot('../kibana-extra'),
+      glob: `*/${I18N_RC}`,
+    });
+  });
+
+  it('calls getTranslationPaths for each config returned in plugin.paths and plugins.scanDirs', async () => {
+    mockConfig.get.mockReturnValueOnce(['a', 'b']).mockReturnValueOnce(['c']);
+    await getKibanaTranslationPaths(mockConfig);
+    expect(mockConfig.get).toHaveBeenNthCalledWith(1, 'plugins.paths');
+    expect(mockConfig.get).toHaveBeenNthCalledWith(2, 'plugins.scanDirs');
+
+    expect(mockGetTranslationPaths).toHaveBeenNthCalledWith(2, { cwd: 'a', glob: I18N_RC });
+    expect(mockGetTranslationPaths).toHaveBeenNthCalledWith(3, { cwd: 'b', glob: I18N_RC });
+    expect(mockGetTranslationPaths).toHaveBeenNthCalledWith(4, { cwd: 'c', glob: `*/${I18N_RC}` });
+  });
+});

src/legacy/server/i18n/get_kibana_translation_paths.ts

@@ -0,0 +1,42 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { KibanaConfig } from '../kbn_server';
+import { fromRoot } from '../../../core/server/utils';
+import { I18N_RC } from './constants';
+import { getTranslationPaths } from './get_translation_paths';
+
+export async function getKibanaTranslationPaths(config: Pick<KibanaConfig, 'get'>) {
+  return await Promise.all([
+    getTranslationPaths({
+      cwd: fromRoot('.'),
+      glob: `*/${I18N_RC}`,
+    }),
+    ...(config.get('plugins.paths') as string[]).map((cwd) =>
+      getTranslationPaths({ cwd, glob: I18N_RC })
+    ),
+    ...(config.get('plugins.scanDirs') as string[]).map((cwd) =>
+      getTranslationPaths({ cwd, glob: `*/${I18N_RC}` })
+    ),
+    getTranslationPaths({
+      cwd: fromRoot('../kibana-extra'),
+      glob: `*/${I18N_RC}`,
+    }),
+  ]);
+}

src/legacy/server/i18n/i18n_mixin.ts

@@ -0,0 +1,63 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { i18n, i18nLoader } from '@kbn/i18n';
+import { basename } from 'path';
+import { Server } from 'hapi';
+import type { UsageCollectionSetup } from '../../../plugins/usage_collection/server';
+import { getKibanaTranslationPaths } from './get_kibana_translation_paths';
+import KbnServer, { KibanaConfig } from '../kbn_server';
+import { registerLocalizationUsageCollector } from './localization';
+
+export async function i18nMixin(
+  kbnServer: KbnServer,
+  server: Server,
+  config: Pick<KibanaConfig, 'get'>
+) {
+  const locale = config.get('i18n.locale') as string;
+
+  const translationPaths = await getKibanaTranslationPaths(config);
+
+  const currentTranslationPaths = ([] as string[])
+    .concat(...translationPaths)
+    .filter((translationPath) => basename(translationPath, '.json') === locale);
+  i18nLoader.registerTranslationFiles(currentTranslationPaths);
+
+  const translations = await i18nLoader.getTranslationsByLocale(locale);
+  i18n.init(
+    Object.freeze({
+      locale,
+      ...translations,
+    })
+  );
+
+  const getTranslationsFilePaths = () => currentTranslationPaths;
+
+  server.decorate('server', 'getTranslationsFilePaths', getTranslationsFilePaths);
+
+  if (kbnServer.newPlatform.setup.plugins.usageCollection) {
+    const { usageCollection } = kbnServer.newPlatform.setup.plugins as {
+      usageCollection: UsageCollectionSetup;
+    };
+    registerLocalizationUsageCollector(usageCollection, {
+      getLocale: () => config.get('i18n.locale') as string,
+      getTranslationsFilePaths,
+    });
+  }
+}

src/legacy/server/i18n/index.ts

@@ -17,60 +17,4 @@
  * under the License.
  */
 
-import { i18n, i18nLoader } from '@kbn/i18n';
-import { basename } from 'path';
-import { Server } from 'hapi';
-import { fromRoot } from '../../../core/server/utils';
-import type { UsageCollectionSetup } from '../../../plugins/usage_collection/server';
-import { getTranslationPaths } from './get_translations_path';
-import { I18N_RC } from './constants';
-import KbnServer, { KibanaConfig } from '../kbn_server';
-import { registerLocalizationUsageCollector } from './localization';
-
-export async function i18nMixin(kbnServer: KbnServer, server: Server, config: KibanaConfig) {
-  const locale = config.get('i18n.locale') as string;
-
-  const translationPaths = await Promise.all([
-    getTranslationPaths({
-      cwd: fromRoot('.'),
-      glob: `*/${I18N_RC}`,
-    }),
-    ...(config.get('plugins.paths') as string[]).map((cwd) =>
-      getTranslationPaths({ cwd, glob: I18N_RC })
-    ),
-    ...(config.get('plugins.scanDirs') as string[]).map((cwd) =>
-      getTranslationPaths({ cwd, glob: `*/${I18N_RC}` })
-    ),
-    getTranslationPaths({
-      cwd: fromRoot('../kibana-extra'),
-      glob: `*/${I18N_RC}`,
-    }),
-  ]);
-
-  const currentTranslationPaths = ([] as string[])
-    .concat(...translationPaths)
-    .filter((translationPath) => basename(translationPath, '.json') === locale);
-  i18nLoader.registerTranslationFiles(currentTranslationPaths);
-
-  const translations = await i18nLoader.getTranslationsByLocale(locale);
-  i18n.init(
-    Object.freeze({
-      locale,
-      ...translations,
-    })
-  );
-
-  const getTranslationsFilePaths = () => currentTranslationPaths;
-
-  server.decorate('server', 'getTranslationsFilePaths', getTranslationsFilePaths);
-
-  if (kbnServer.newPlatform.setup.plugins.usageCollection) {
-    const { usageCollection } = kbnServer.newPlatform.setup.plugins as {
-      usageCollection: UsageCollectionSetup;
-    };
-    registerLocalizationUsageCollector(usageCollection, {
-      getLocale: () => config.get('i18n.locale') as string,
-      getTranslationsFilePaths,
-    });
-  }
-}
+export { i18nMixin } from './i18n_mixin';