Split up test jobs so that they can be run concurrently

.github/workflows/pull-request.yml

@@ -3,35 +3,66 @@ name: Pull request
 on: pull_request
 
 jobs:
-  build:
-    name: Pull request
+  sonar_analysis:
+    name: Sonar analysis
     runs-on: ubuntu-latest
-
     steps:
     - uses: actions/checkout@v2
-
     - uses: actions/setup-node@v4
       with:
         node-version: 20
         cache: 'npm'
-
     - name: Install dependencies
       run: npm ci
-
     - name: Sonar analysis
       uses: sonarsource/sonarcloud-github-action@master
       with:
         projectBaseDir: .
       env:
         GITHUB_TOKEN: ${{ secrets.TOKEN_GITHUB }}
         SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
-        SONAR_HOST_URL: ${{ secrets.SONAR_HOST_URL }} 
-
+        SONAR_HOST_URL: ${{ secrets.SONAR_HOST_URL }}
+
+  linting:
+    name: Code style checks
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-node@v4
+      with:
+        node-version: 20
+        cache: 'npm'
+    - name: Install dependencies
+      run: npm ci
     - name: Run linting
       run: npm run lint
-
+
+  tests:
+    name: Javascript unit tests
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-node@v4
+      with:
+        node-version: 20
+        cache: 'npm'
+    - name: Install dependencies
+      run: npm ci
+    - name: Run tests
+      run: npm test
+
+  ui_tests:
+    name: Visual regression tests
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-node@v4
+      with:
+        node-version: 20
+        cache: 'npm'
+    - name: Install dependencies
+      run: npm ci
     - name: Run tests
       run: npm test
-
     - name: Run backstop
       run: npm run backstop:ci