Generate the HTML coverage in one step instead of as we go.

Author: johnbillion

.github/workflows/reusable-phpunit-tests-v3.yml

@@ -218,7 +218,7 @@ jobs:
             --verbose \
             -c "${PHPUNIT_CONFIG}" \
             ${{ inputs.phpunit-test-groups && '--group "${TEST_GROUPS}"' || '' }} \
-            ${{ inputs.coverage-report && '--coverage-clover "wp-code-coverage-${MULTISITE_FLAG}-${GITHUB_SHA}.xml" --coverage-html "wp-code-coverage-${MULTISITE_FLAG}-${GITHUB_SHA}"' || '' }}
+            ${{ inputs.coverage-report && '--coverage-clover "wp-code-coverage-${MULTISITE_FLAG}-${GITHUB_SHA}.xml" --coverage-php "wp-code-coverage-${MULTISITE_FLAG}-${GITHUB_SHA}.cov"' || '' }}
         env:
           TEST_GROUPS: ${{ inputs.phpunit-test-groups }}
           MULTISITE_FLAG: ${{ inputs.multisite && 'multisite' || 'single' }}
@@ -253,6 +253,20 @@ jobs:
           flags: ${{ inputs.multisite && 'multisite' || 'single' }},php
           fail_ci_if_error: true
 
+      - name: Generate HTML coverage report
+        if: ${{ inputs.coverage-report }}
+        run: |
+          docker compose exec -T \
+            -e COV="/var/www/wp-code-coverage-${MULTISITE_FLAG}-${GITHUB_SHA}.cov" \
+            -e OUT="/var/www/wp-code-coverage-${MULTISITE_FLAG}-${GITHUB_SHA}" \
+            php php -d memory_limit=-1 -r '
+              require "/var/www/vendor/autoload.php";
+              $coverage = require getenv("COV");
+              (new SebastianBergmann\CodeCoverage\Report\Html\Facade())->process($coverage, getenv("OUT"));
+            '
+        env:
+          MULTISITE_FLAG: ${{ inputs.multisite && 'multisite' || 'single' }}
+
       - name: Upload HTML coverage report as artifact
         if: ${{ inputs.coverage-report }}
         uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0