test: fix unit tests on windows machines (#3678)

.github/workflows/nodejs.yml

@@ -39,18 +39,19 @@ jobs:
           key: ${{ runner.os }}-yarn-${{ hashFiles(format('{0}{1}', github.workspace, '/yarn.lock')) }}
           restore-keys: |
             ${{ runner.os }}-yarn-
-      - name: npm install, unit test and build
+      - name: log versions
-        run: |
+        run: node --version && npm --version && yarn --version
-          node --version
+      - name: install dependecies
-          npm --version
+        run: yarn --frozen-lockfile && yarn bootstrap
-          yarn --version
+      - name: run unit tests
-          yarn --frozen-lockfile
+        run: yarn test:ci
-          yarn bootstrap
-          yarn test:ci
-          yarn build:demo
         env:
           CI: true
           NODE_OPTIONS: --max-old-space-size=4096
+      - name: build demo site
+        run: yarn build:demo
+        env:
+          NODE_OPTIONS: --max-old-space-size=4096
       - uses: actions/upload-artifact@master
         with:
           name: dev-test-website-${{ runner.os }}-node-${{ matrix.node-version }}

setupTestFramework.js

@@ -4,6 +4,13 @@ import fetch from 'node-fetch';
 import * as emotion from 'emotion';
 import { createSerializer } from 'jest-emotion';
 
+jest.mock('path', () => {
+  const actual = jest.requireActual('path');
+  return {
+    ...actual.posix,
+  };
+});
+
 window.fetch = fetch;
 window.URL.createObjectURL = jest.fn();
 expect.addSnapshotSerializer(createSerializer(emotion));