Build/Test Tools: Cancel previous active workflow runs for pull requests.

Because workflow results are reported for each commit, it’s important to let all runs against main and version branches to complete so that the checks are reported accurately.

When considering and reviewing pull requests, the only workflow run that matters is the most recent.

Props ocean90, helen.
See #50401.

git-svn-id: https://develop.svn.wordpress.org/trunk@49244 602fd350-edb4-49c9-b593-d223f7449a82

.github/workflows/end-to-end-tests.yml

@@ -16,6 +16,7 @@ jobs:
   # Runs the end-to-end test suite.
   #
   # Performs the following steps:
+  # - Cancels all previous workflow runs for pull requests that have not completed.
   # - Set environment variables.
   # - Checks out the repository.
   # - Logs debug information about the runner container.
@@ -34,6 +35,12 @@ jobs:
     name: E2E Tests
     runs-on: ubuntu-latest
     steps:
+      - name: Cancel previous runs of this workflow (pull requests only)
+        if: ${{ github.event_name == 'pull_request' }}
+        uses: styfle/cancel-workflow-action@0.5.0
+        with:
+          access_token: ${{ github.token }}
+
       - name: Configure environment variables
         run: |
           echo "PHP_FPM_UID=$(id -u)" >> $GITHUB_ENV

.github/workflows/javascript-tests.yml

@@ -11,6 +11,7 @@ jobs:
   # Runs the QUnit tests for WordPress.
   #
   # Performs the following steps:
+  # - Cancels all previous workflow runs for pull requests that have not completed.
   # - Checks out the repository.
   # - Logs debug information about the runner container.
   # - Installs NodeJS 12 (todo: install the version of NPM specified in the `.nvmrc` file to support older branches)
@@ -23,6 +24,12 @@ jobs:
     name: QUnit Tests
     runs-on: ubuntu-latest
     steps:
+      - name: Cancel previous runs of this workflow (pull requests only)
+        if: ${{ github.event_name == 'pull_request' }}
+        uses: styfle/cancel-workflow-action@0.5.0
+        with:
+          access_token: ${{ github.token }}
+
       - name: Checkout repository
         uses: actions/checkout@v2
 

.github/workflows/phpunit-tests.yml

@@ -22,6 +22,7 @@ jobs:
   # Sets up WordPress for testing or development use.
   #
   # Performs the following steps:
+  # - Cancels all previous workflow runs for pull requests that have not completed.
   # - Checks out the repository.
   # - Checks out the WordPress Importer plugin (needed for the Core PHPUnit tests).
   # - Logs debug information about the runner container.
@@ -36,6 +37,12 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - name: Cancel previous runs of this workflow (pull requests only)
+        if: ${{ github.event_name == 'pull_request' }}
+        uses: styfle/cancel-workflow-action@0.5.0
+        with:
+          access_token: ${{ github.token }}
+
       - name: Checkout repository
         uses: actions/checkout@v2
 

.github/workflows/verify-npm-on-windows.yml

@@ -14,6 +14,7 @@ jobs:
   # Verifies that installing NPM dependencies and building WordPress works on Windows.
   #
   # Performs the following steps:
+  # - Cancels all previous workflow runs for pull requests that have not completed.
   # - Checks out the repository.
   # - Logs debug information about the runner container.
   # - Installs NodeJS 12 (todo: install the version of NPM specified in the `.nvmrc` file to support older branches)
@@ -24,6 +25,12 @@ jobs:
     name: Tests NPM on Windows
     runs-on: windows-latest
     steps:
+      - name: Cancel previous runs of this workflow (pull requests only)
+        if: ${{ github.event_name == 'pull_request' }}
+        uses: styfle/cancel-workflow-action@0.5.0
+        with:
+          access_token: ${{ github.token }}
+
       - name: Checkout repository
         uses: actions/checkout@v2