chore: test on node 12

.circleci/config.yml

@@ -73,10 +73,10 @@ jobs:
       - store_test_results:
           path: reports/junit
 
-  test-node-11:
+  test-node-12:
     working_directory: ~/jest
     docker:
-      - image: circleci/node:11
+      - image: circleci/node:12
     steps:
       - checkout
       - restore-cache: *restore-cache
@@ -120,8 +120,8 @@ workflows:
       - lint-and-typecheck
       - test-node-8
       - test-node-10
+      - test-node-12 # current
       - test-jest-circus
-      - test-node-11 # current
       - test-browser
       - test-or-deploy-website:
           filters: *filter-ignore-gh-pages

CHANGELOG.md

@@ -6,13 +6,14 @@
 
 - `[expect]` Display expectedDiff more carefully in toBeCloseTo ([#8389](https://github.com/facebook/jest/pull/8389))
 - `[jest-fake-timers]` `getTimerCount` will not include cancelled immediates ([#8764](https://github.com/facebook/jest/pull/8764))
+- `[jest-leak-detector]` [**BREAKING**] Use `weak-napi` instead of `weak` package ([#8686](https://github.com/facebook/jest/pull/8686))
 
 ### Chore & Maintenance
 
 - `[*]` [**BREAKING**] Drop support for Node 6 ([#8455](https://github.com/facebook/jest/pull/8455))
+- `[*]` Add Node 12 to CI ([#8411](https://github.com/facebook/jest/pull/8411))
 - `[docs]` Fix broken link pointing to legacy JS file in "Snapshot Testing".
 - `[jest-environment-jsdom]` [**BREAKING**] Upgrade JSDOM from v11 to v15 ([#8851](https://github.com/facebook/jest/pull/8851))
-- `[jest-leak-detector]` [**BREAKING**] Use `weak-napi` instead of `weak` package ([#8686](https://github.com/facebook/jest/pull/8686))
 
 ### Performance
 

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

@@ -16,7 +16,7 @@ FAIL __tests__/defaultTimeoutInterval.test.js
       12 | });
       13 | 
 
-      at Object.<anonymous>.test (__tests__/defaultTimeoutInterval.test.js:10:3)
+      at Object.<anonymous> (__tests__/defaultTimeoutInterval.test.js:10:3)
 `;
 
 exports[`fail.test.js errors in errorOnDeprecated mode 1`] = `

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

@@ -211,7 +211,7 @@ FAIL __tests__/duringTests.test.js
       40 | 
       41 | test('done(non-error)', done => {
 
-      at Object.<anonymous>.done (__tests__/duringTests.test.js:38:8)
+      at Object.<anonymous> (__tests__/duringTests.test.js:38:8)
 
   ● done(non-error)
 

e2e/__tests__/errorOnDeprecated.test.ts

@@ -32,14 +32,31 @@ const SHOULD_NOT_PASS_IN_JEST = new Set([
   'spyOnProperty.test.js',
 ]);
 
+const nodeMajorVersion = Number(process.versions.node.split('.')[0]);
+
 testFiles.forEach(testFile => {
   test(`${testFile} errors in errorOnDeprecated mode`, () => {
     const result = runJest('error-on-deprecated', [
       testFile,
       '--errorOnDeprecated',
     ]);
     expect(result.status).toBe(1);
-    const {rest} = extractSummary(result.stderr);
+    let {rest} = extractSummary(result.stderr);
+
+    if (
+      nodeMajorVersion < 12 &&
+      testFile === 'defaultTimeoutInterval.test.js'
+    ) {
+      const lineEntry = '(__tests__/defaultTimeoutInterval.test.js:10:3)';
+
+      expect(rest).toContain(`at Object.<anonymous>.test ${lineEntry}`);
+
+      rest = rest.replace(
+        `at Object.<anonymous>.test ${lineEntry}`,
+        `at Object.<anonymous> ${lineEntry}`,
+      );
+    }
+
     expect(wrap(rest)).toMatchSnapshot();
   });
 });

e2e/__tests__/failures.test.ts

@@ -21,6 +21,8 @@ function cleanStderr(stderr: string) {
     .replace(new RegExp('Failed: Object {', 'g'), 'thrown: Object {');
 }
 
+const nodeMajorVersion = Number(process.versions.node.split('.')[0]);
+
 beforeAll(() => {
   run('yarn', dir);
 });
@@ -36,17 +38,28 @@ test('not throwing Error objects', () => {
   stderr = runJest(dir, ['assertionCount.test.js']).stderr;
   expect(wrap(cleanStderr(stderr))).toMatchSnapshot();
   stderr = runJest(dir, ['duringTests.test.js']).stderr;
+
+  if (nodeMajorVersion < 12) {
+    const lineEntry = '(__tests__/duringTests.test.js:38:8)';
+
+    expect(stderr).toContain(`at Object.<anonymous>.done ${lineEntry}`);
+
+    stderr = stderr.replace(
+      `at Object.<anonymous>.done ${lineEntry}`,
+      `at Object.<anonymous> ${lineEntry}`,
+    );
+  }
+
   expect(wrap(cleanStderr(stderr))).toMatchSnapshot();
 });
 
 test('works with node assert', () => {
-  const nodeMajorVersion = Number(process.versions.node.split('.')[0]);
   const {stderr} = runJest(dir, ['assertionError.test.js']);
   let summary = normalizeDots(cleanStderr(stderr));
 
   // Node 9 started to include the error for `doesNotThrow`
   // https://github.com/nodejs/node/pull/12167
-  if (nodeMajorVersion >= 9) {
+  if (nodeMajorVersion >= 10) {
     expect(summary).toContain(`
     assert.doesNotThrow(function)
 
@@ -91,9 +104,7 @@ test('works with node assert', () => {
       expect(summary).toContain(specificErrorMessage);
       summary = summary.replace(specificErrorMessage, commonErrorMessage);
     }
-  }
 
-  if (nodeMajorVersion >= 10) {
     const ifErrorMessage = `
     assert.ifError(received, expected)