Jest multi-project configuration (#77894) (#84826)

Signed-off-by: Tyler Smalley <[email protected]>
# Conflicts:
#	src/dev/code_coverage/ingest_coverage/integration_tests/team_assignment.test.js
#	src/plugins/console/jest.config.js
#	x-pack/plugins/canvas/scripts/jest.js

Author: Tyler Smalley

docs/developer/contributing/development-unit-tests.asciidoc

@@ -20,11 +20,13 @@ yarn test:mocha
 == Jest
 Jest tests are stored in the same directory as source code files with the `.test.{js,mjs,ts,tsx}` suffix.
 
-*Running Jest Unit Tests*
+Each plugin and package contains it's own `jest.config.js` file to define its root, and any overrides 
+to the jest-preset provided by `@kbn/test`. When working on a single plugin or package, you will find 
+it's more efficient to supply the Jest configuration file when running.
 
 ["source","shell"]
 -----------
-yarn test:jest
+yarn jest --config src/plugins/discover/jest.config.js
 -----------
 
 [discrete]

src/dev/jest/config.integration.js renamed to jest.config.integration.js

@@ -17,16 +17,14 @@
  * under the License.
  */
 
-import preset from '@kbn/test/jest-preset';
-import config from './config';
+const preset = require('@kbn/test/jest-preset');
 
-export default {
-  ...config,
-  testMatch: [
-    '**/integration_tests/**/*.test.js',
-    '**/integration_tests/**/*.test.ts',
-    '**/integration_tests/**/*.test.tsx',
-  ],
+module.exports = {
+  preset: '@kbn/test',
+  rootDir: '.',
+  roots: ['<rootDir>/src', '<rootDir>/packages'],
+  testMatch: ['**/integration_tests**/*.test.{js,mjs,ts,tsx}'],
+  testRunner: 'jasmine2',
   testPathIgnorePatterns: preset.testPathIgnorePatterns.filter(
     (pattern) => !pattern.includes('integration_tests')
   ),

jest.config.js

@@ -0,0 +1,23 @@
+/*
+ * 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.
+ */
+
+module.exports = {
+  rootDir: '.',
+  projects: [...require('./jest.config.oss').projects, ...require('./x-pack/jest.config').projects],
+};

jest.config.oss.js

@@ -0,0 +1,30 @@
+/*
+ * 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.
+ */
+
+module.exports = {
+  rootDir: '.',
+  projects: [
+    '<rootDir>/packages/*/jest.config.js',
+    '<rootDir>/src/*/jest.config.js',
+    '<rootDir>/src/legacy/*/jest.config.js',
+    '<rootDir>/src/plugins/*/jest.config.js',
+    '<rootDir>/test/*/jest.config.js',
+  ],
+  reporters: ['default', '<rootDir>/packages/kbn-test/target/jest/junit_reporter'],
+};

packages/README.md

@@ -60,7 +60,7 @@ A package can also follow the pattern of having `.test.js` files as siblings of
 A package using the `.test.js` naming convention will have those tests automatically picked up by Jest and run by the unit test runner, currently mapped to the Kibana `test` script in the root `package.json`.
 
 * `yarn test` or `yarn grunt test` runs all unit tests.
-* `node scripts/jest` runs all Jest tests in Kibana.
+* `yarn jest` runs all Jest tests in Kibana.
 
 ----
 Each package can also specify its own `test` script in the package's `package.json`, for cases where you'd prefer to run the tests from the local package directory.

packages/kbn-apm-config-loader/jest.config.js

@@ -0,0 +1,24 @@
+/*
+ * 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.
+ */
+
+module.exports = {
+  preset: '@kbn/test',
+  rootDir: '../..',
+  roots: ['<rootDir>/packages/kbn-apm-config-loader'],
+};

packages/kbn-babel-code-parser/jest.config.js

@@ -0,0 +1,24 @@
+/*
+ * 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.
+ */
+
+module.exports = {
+  preset: '@kbn/test',
+  rootDir: '../..',
+  roots: ['<rootDir>/packages/kbn-babel-code-parser'],
+};

packages/kbn-config-schema/jest.config.js

@@ -0,0 +1,24 @@
+/*
+ * 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.
+ */
+
+module.exports = {
+  preset: '@kbn/test',
+  rootDir: '../..',
+  roots: ['<rootDir>/packages/kbn-config-schema'],
+};

packages/kbn-config/jest.config.js

@@ -0,0 +1,24 @@
+/*
+ * 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.
+ */
+
+module.exports = {
+  preset: '@kbn/test',
+  rootDir: '../..',
+  roots: ['<rootDir>/packages/kbn-config'],
+};

packages/kbn-dev-utils/jest.config.js

@@ -0,0 +1,24 @@
+/*
+ * 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.
+ */
+
+module.exports = {
+  preset: '@kbn/test',
+  rootDir: '../..',
+  roots: ['<rootDir>/packages/kbn-dev-utils'],
+};