add unit tests for get_upgradable_config

src/core/server/ui_settings/create_or_upgrade_saved_config/get_upgradeable_config.test.ts

@@ -0,0 +1,76 @@
+/*
+ * 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 { getUpgradeableConfig } from './get_upgradeable_config';
+import { SavedObjectsClientMock } from '../../saved_objects/service/saved_objects_client.mock';
+
+describe('getUpgradeableConfig', () => {
+  it('finds saved objects with type "config"', async () => {
+    const savedObjectsClient = SavedObjectsClientMock.create();
+    savedObjectsClient.find.mockResolvedValue({
+      saved_objects: [{ id: '7.5.0' }],
+    } as any);
+
+    await getUpgradeableConfig({ savedObjectsClient, version: '7.5.0' });
+    expect(savedObjectsClient.find.mock.calls[0][0].type).toBe('config');
+  });
+
+  it('finds saved config with version < than Kibana version', async () => {
+    const savedConfig = { id: '7.4.0' };
+    const savedObjectsClient = SavedObjectsClientMock.create();
+    savedObjectsClient.find.mockResolvedValue({
+      saved_objects: [savedConfig],
+    } as any);
+
+    const result = await getUpgradeableConfig({ savedObjectsClient, version: '7.5.0' });
+    expect(result).toBe(savedConfig);
+  });
+
+  it('finds saved config with RC version === Kibana version', async () => {
+    const savedConfig = { id: '7.5.0-rc1' };
+    const savedObjectsClient = SavedObjectsClientMock.create();
+    savedObjectsClient.find.mockResolvedValue({
+      saved_objects: [savedConfig],
+    } as any);
+
+    const result = await getUpgradeableConfig({ savedObjectsClient, version: '7.5.0' });
+    expect(result).toBe(savedConfig);
+  });
+
+  it('does not find saved config with version === Kibana version', async () => {
+    const savedConfig = { id: '7.5.0' };
+    const savedObjectsClient = SavedObjectsClientMock.create();
+    savedObjectsClient.find.mockResolvedValue({
+      saved_objects: [savedConfig],
+    } as any);
+
+    const result = await getUpgradeableConfig({ savedObjectsClient, version: '7.5.0' });
+    expect(result).toBe(undefined);
+  });
+
+  it('does not find saved config with version > Kibana version', async () => {
+    const savedConfig = { id: '7.6.0' };
+    const savedObjectsClient = SavedObjectsClientMock.create();
+    savedObjectsClient.find.mockResolvedValue({
+      saved_objects: [savedConfig],
+    } as any);
+
+    const result = await getUpgradeableConfig({ savedObjectsClient, version: '7.5.0' });
+    expect(result).toBe(undefined);
+  });
+});