chore: use Jest 27 (#186)

SimenB · web-flow · commit 506df22e2a0b · 2021-09-29T12:13:57.000+02:00
diff --git a/.github/workflows/nodejs.yml b/.github/workflows/nodejs.yml
@@ -17,7 +17,11 @@ jobs:
       fail-fast: false
       matrix:
         node-version: [10.x, 12.x, 13.x, 14.x, 16.x]
-        jest-version: [24, 25, 26]
+        jest-version: [24, 25, 26, 27]
+        exclude:
+          # jest@27 doesn't support node@13
+          - node-version: 13.x
+            jest-version: 27
     runs-on: ubuntu-latest
 
     steps:
@@ -29,8 +33,8 @@ jobs:
           cache: yarn
       - name: install with jest v${{ matrix.jest-version }}
         run: |
-          yarn
           yarn add --dev jest@${{ matrix.jest-version }} babel-jest@${{ matrix.jest-version }}
+          yarn
       - name: run tests
         run: yarn test
   test-os:
diff --git a/__tests__/buildJsonResults.test.js b/__tests__/buildJsonResults.test.js
@@ -278,7 +278,7 @@ describe('buildJsonResults', () => {
 
     // Mock Date.now() to return a fixed later value
     const startDate = new Date(multiProjectNoFailingTestsReport.startTime);
-    spyOn(Date, 'now').and.returnValue(startDate.getTime() + 1234);
+    jest.spyOn(Date, 'now').mockImplementation(() => startDate.getTime() + 1234);
 
     jsonResults = buildJsonResults(multiProjectNoFailingTestsReport, '/',
       Object.assign({}, constants.DEFAULT_OPTIONS, {
diff --git a/package.json b/package.json
@@ -24,7 +24,7 @@
     "xml": "^1.0.1"
   },
   "devDependencies": {
-    "jest": "26.0.1",
+    "jest": "^27.2.3",
     "libxmljs": "^0.19.7",
     "slash": "^3.0.0"
   }
diff --git a/yarn.lock b/yarn.lock

Original file line number	Diff line number	Diff line change
`@@ -24,7 +24,7 @@`
`24`	`24`	`"xml": "^1.0.1"`
`25`	`25`	`},`
`26`	`26`	`"devDependencies": {`
`27`		`- "jest": "26.0.1",`
	`27`	`+ "jest": "^27.2.3",`
`28`	`28`	`"libxmljs": "^0.19.7",`
`29`	`29`	`"slash": "^3.0.0"`
`30`	`30`	`}`