Add e2e test for runCore

Author: nicojs

e2e/__tests__/__snapshots__/runProgrammatically.test.ts.snap

@@ -0,0 +1,73 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`runCore Jest programmatically 1`] = `
+Object {
+  "numFailedTestSuites": 0,
+  "numFailedTests": 0,
+  "numPassedTestSuites": 1,
+  "numPassedTests": 1,
+  "numPendingTestSuites": 0,
+  "numPendingTests": 0,
+  "numRuntimeErrorTestSuites": 0,
+  "numTodoTests": 0,
+  "numTotalTestSuites": 1,
+  "numTotalTests": 1,
+  "openHandles": Array [],
+  "snapshot": Object {
+    "added": 0,
+    "didUpdate": false,
+    "failure": false,
+    "filesAdded": 0,
+    "filesRemoved": 0,
+    "filesRemovedList": Array [],
+    "filesUnmatched": 0,
+    "filesUpdated": 0,
+    "matched": 0,
+    "total": 0,
+    "unchecked": 0,
+    "uncheckedKeysByFile": Array [],
+    "unmatched": 0,
+    "updated": 0,
+  },
+  "success": true,
+  "testResults": Array [
+    Object {
+      "failureMessage": null,
+      "leaks": false,
+      "numFailingTests": 0,
+      "numPassingTests": 1,
+      "numPendingTests": 0,
+      "numTodoTests": 0,
+      "openHandles": Array [],
+      "skipped": false,
+      "snapshot": Object {
+        "added": 0,
+        "fileDeleted": false,
+        "matched": 0,
+        "unchecked": 0,
+        "uncheckedKeys": Array [],
+        "unmatched": 0,
+        "updated": 0,
+      },
+      "testFilePath": "src/app.spec.js",
+      "testResults": Array [
+        Object {
+          "ancestorTitles": Array [
+            "jest-core",
+          ],
+          "failureDetails": Array [],
+          "failureMessages": Array [],
+          "fullName": "jest-core should run this test",
+          "invocations": 1,
+          "location": null,
+          "numPassingAsserts": 0,
+          "retryReasons": Array [],
+          "status": "passed",
+          "title": "should run this test",
+        },
+      ],
+    },
+  ],
+  "wasInterrupted": false,
+}
+`;

e2e/__tests__/runProgrammatically.test.ts

@@ -5,17 +5,40 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {resolve} from 'path';
+import {relative, resolve} from 'path';
+import type {AggregatedResult} from '@jest/test-result';
 import {run} from '../Utils';
 
 const dir = resolve(__dirname, '..', 'run-programmatically');
 
-test('run Jest programmatically cjs', () => {
+test('runCLI Jest programmatically cjs', () => {
   const {stdout} = run('node cjs.js --version', dir);
   expect(stdout).toMatch(/\d{2}\.\d{1,2}\.\d{1,2}[-\S]*-dev$/);
 });
 
-test('run Jest programmatically esm', () => {
+test('runCLI Jest programmatically esm', () => {
   const {stdout} = run('node index.js --version', dir);
   expect(stdout).toMatch(/\d{2}\.\d{1,2}\.\d{1,2}[-\S]*-dev$/);
 });
+
+test('runCore Jest programmatically', () => {
+  const {stdout} = run('node core.mjs', dir);
+  const {startTime, ...results}: AggregatedResult = JSON.parse(
+    stdout.split('==== results ====')[1],
+  );
+
+  const prunedResults = {
+    ...results,
+
+    testResults: results.testResults.map(
+      ({testFilePath, perfStats, ...testFileData}) => ({
+        ...testFileData,
+        testFilePath: relative(dir, testFilePath),
+        testResults: testFileData.testResults.map(
+          ({duration, ...testResult}) => testResult,
+        ),
+      }),
+    ),
+  };
+  expect(prunedResults).toMatchSnapshot();
+});

e2e/run-programmatically/cjs.js

@@ -7,4 +7,4 @@
 
 // Running Jest like this is not officially supported,
 // but it is common practice until there is a proper API as a substitute.
-require('jest').run(process.argv);
+require('jest').runCLI(process.argv);

e2e/run-programmatically/core.mjs

@@ -0,0 +1,12 @@
+import jest from 'jest';
+
+const {globalConfig, configs} = await jest.readConfigs(process.argv, ['.']);
+const runConfig = Object.freeze({
+  ...globalConfig,
+  collectCoverage: false,
+  json: true,
+  watch: false,
+});
+const {result} = await jest.runCore(runConfig, configs);
+console.log('==== results ====');
+console.log(JSON.stringify(result, null, 2));

e2e/run-programmatically/esm.js

@@ -5,8 +5,8 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {run} from 'jest';
+import {runCLI} from 'jest';
 
 // Running Jest like this is not officially supported,
 // but it is common practice until there is a proper API as a substitute.
-run(process.argv);
+runCLI(process.argv);

e2e/run-programmatically/package.json

@@ -2,5 +2,8 @@
   "name": "run-programmatically",
   "version": "1.0.0",
   "dependencies": {},
-  "jest": {}
+  "jest": {
+    "testEnvironment": "node",
+    "maxWorkers": 1
+  }
 }

e2e/run-programmatically/src/app.spec.js

@@ -0,0 +1,3 @@
+describe('jest-core', () => {
+  it('should run this test', () => {});
+});