Check if tests needed before build

Author: hsubox76

.github/workflows/test-changed-auth.yml

@@ -27,7 +27,12 @@ jobs:
       run: |
         cp config/ci.config.json config/project.json
         yarn
+    - name: Check if tests needed
+      run: yarn ts-node-script scripts/ci-test/has_changed.ts
+      id: check-tests-needed
     - name: build
+      if: ${{steps.check-tests-needed.outputs.NEEDS_TESTS}}
       run: yarn build
     - name: Run tests on changed packages
+      if: ${{steps.check-tests-needed.outputs.NEEDS_TESTS}}
       run: xvfb-run yarn test:changed auth

scripts/ci-test/has_changed.ts

@@ -0,0 +1,56 @@
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed 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 { resolve } from 'path';
+import { filterTasks, getTestTasks, TestReason } from './tasks';
+import { argv } from 'yargs';
+import { testConfig } from './testConfig';
+import chalk from 'chalk';
+const root = resolve(__dirname, '../..');
+
+const inputTestConfigName = argv._[0].toString();
+const config = testConfig[inputTestConfigName]!;
+
+async function checkIfTestsNeeded() {
+  try {
+    const testTasks = filterTasks(await getTestTasks(), config);
+    if (testTasks.length > 0) {
+      for (const task of testTasks) {
+        if (task.reason === TestReason.Changed) {
+          console.log(
+            chalk`{yellow ${task.pkgName} (contains modified files)}`
+          );
+        } else if (task.reason === TestReason.Dependent) {
+          console.log(
+            chalk`{yellow ${task.pkgName} (depends on modified files)}`
+          );
+        } else {
+          console.log(chalk`{yellow ${task.pkgName} (running all tests)}`);
+        }
+      }
+      console.log(`::set-output name=NEEDS_TESTS::true`);
+    } else {
+      console.log(`::set-output name=NEEDS_TESTS::false`);
+    }
+    process.exit(0);
+  } catch (e) {
+    console.error(e);
+    process.exit(1);
+  }
+}
+
+checkIfTestsNeeded();