test: Add an e2e test for PHPUnit

.github/workflows/e2e-tests.yaml

@@ -8,7 +8,7 @@ on:
         types: [ created ]
     schedule:
         # Do not make it the first of the month and/or midnight since it is a very busy time
-        - cron: "* 10 5 * *"
+        -   cron: "* 10 5 * *"
 
 # See https://stackoverflow.com/a/72408109
 concurrency:
@@ -149,6 +149,72 @@ jobs:
             -   name: Run e2e ${{ matrix.e2e }}
                 run: make ${{ matrix.e2e }} --debug
 
+
+    # Most of the job definitions come from https://github.com/sebastianbergmann/phpunit/blob/main/.github/workflows/ci.yml#L228
+    # (job name "test-phar").
+    test-phpunit-scoping:
+        runs-on: ubuntu-latest
+        needs: build-test-phar
+
+        env:
+            PHP_EXTENSIONS: none, curl, dom, json, fileinfo, iconv, libxml, mbstring, phar, soap, tokenizer, xml, xmlwriter
+            PHP_INI_VALUES: assert.exception=1, phar.readonly=0, zend.assertions=1
+
+        strategy:
+            fail-fast: false
+            matrix:
+                php-version:
+                    - '8.2'
+                coverage:
+                    - xdebug
+
+        steps:
+            -   name: Checkout PHPUnit code
+                uses: actions/checkout@v4
+                with:
+                    repository: 'sebastianbergmann/phpunit'
+
+
+            -   name: Install PHP with extensions
+                uses: shivammathur/setup-php@v2
+                with:
+                    php-version: ${{ matrix.php-version }}
+                    coverage: ${{ matrix.coverage }}
+                    extensions: ${{ env.PHP_EXTENSIONS }}
+                    ini-values: ${{ env.PHP_INI_VALUES }}
+                    tools: none
+
+            -   name: Install java
+                uses: actions/setup-java@v3
+                with:
+                    distribution: zulu
+                    java-version: 11
+
+            -   name: Retrieve built PHP-Scoper PHAR
+                uses: actions/download-artifact@v3
+                with:
+                    name: php-scoper-phar-${{ matrix.php-version }}
+                    path: bin
+
+            # See https://github.com/actions/download-artifact#limitations
+            # the permissions are not guaranteed to be preserved
+            -   name: Ensure PHAR is executable
+                run: chmod 755 bin/php-scoper.phar
+
+            -   name: Make the downloaded PHP-Scoper PHAR the PHPUnit scoper used
+                run: mv -f bin/php-scoper.phar tools/php-scoper
+
+            -   name: Check that the PHP-Scoper PHAR works
+                run: tools/php-scoper --version
+
+            -   name: Build PHPUnit scoped PHAR
+                run: ant phar-snapshot
+
+            # To keep in sync with e2e.file#e2e_038
+            -   name: Run PHPUnit PHAR-specific tests
+                run: ant run-phar-specific-tests
+
+
     # This is a "trick", a meta task which does not change, and we can use in
     # the protected branch rules as opposed to the E2E tests one above which
     # may change regularly.
@@ -160,12 +226,13 @@ jobs:
         needs:
             - build-test-phar
             - e2e-tests
+            - test-phpunit-scoping
         if: always()
         steps:
-            - name: Successful run
-              if: ${{ !(contains(needs.*.result, 'failure')) }}
-              run: exit 0
+            -   name: Successful run
+                if: ${{ !(contains(needs.*.result, 'failure')) }}
+                run: exit 0
 
-            - name: Failing run
-              if: ${{ contains(needs.*.result, 'failure') }}
-              run: exit 1
+            -   name: Failing run
+                if: ${{ contains(needs.*.result, 'failure') }}
+                run: exit 1

.makefile/e2e.file

@@ -1,3 +1,7 @@
+E2E_PHPUNIT_DIR = 'build/set038/phpunit'
+E2E_PHPUNIT_PHPUNIT_PHP_SCOPER = '$(E2E_PHPUNIT_DIR)/tools/php-scoper'
+E2E_PHPUNIT_SCOPED_PHPUNIT = 'build/artifacts/phpunit-snapshot.phar'
+
 .PHONY: e2e_004
 e2e_004: # Runs end-to-end tests for the fixture set 004 — Minimalistic codebase
 e2e_004: $(PHP_SCOPER_PHAR_BIN)
@@ -370,6 +374,24 @@ e2e_037: $(PHP_SCOPER_PHAR_BIN) build/set011/bin/greet.phar
 	diff fixtures/set037-double-scoping/expected-output build/set037/output
 
 
+.PHONY: e2e_038
+e2e_038: # Runs end-to-end tests for the PHPUnit integration
+e2e_038: $(PHP_SCOPER_PHAR_BIN)
+	rm -rf $(E2E_PHPUNIT_DIR) || true
+	$(MAKE) $(E2E_PHPUNIT_DIR)
+
+	rm -rf $(E2E_PHPUNIT_PHPUNIT_PHP_SCOPER) || true
+	cp $(PHP_SCOPER_PHAR_BIN) $(E2E_PHPUNIT_PHPUNIT_PHP_SCOPER)
+
+	cd $(E2E_PHPUNIT_DIR); ant phar-snapshot
+	$(MAKE) _e2e_038
+
+.PHONY: _e2e_038
+_e2e_038:
+	@# To keep in sync with .github/workflows/e2e-tests.yaml#test-phpunit-scoping
+	cd $(E2E_PHPUNIT_DIR); XDEBUG_MODE=coverage ant run-phar-specific-tests
+
+
 #
 # Rules from files
 #---------------------------------------------------------------------------
@@ -507,3 +529,8 @@ fixtures/set035-composer-files-autoload/guzzle5-include/vendor: fixtures/set035-
 fixtures/set035-composer-files-autoload/guzzle5-include/composer.lock: fixtures/set035-composer-files-autoload/guzzle5-include/composer.json
 	@echo "$(@) is not up to date. You may want to run the following command:"
 	@echo "$$ composer --working-dir=fixtures/set035-composer-files-autoload/guzzle5-include update --lock && touch -c $(@)"
+
+build/set038/phpunit:
+	rm -rf $(E2E_PHPUNIT_DIR) || true
+	git clone --depth=1 --single-branch [email protected]:sebastianbergmann/phpunit.git $@
+	touch -c $@

Makefile

@@ -170,7 +170,8 @@ e2e: e2e_004 \
 		e2e_034 \
 		e2e_035 \
 		e2e_036 \
-		e2e_037
+		e2e_037 \
+		e2e_038
 
 .PHONY: blackfire
 blackfire: ## Runs Blackfire profiling

tests/AutoReview/E2ECollector.php

@@ -44,6 +44,10 @@ final class E2ECollector
         'set012',
     ];
 
+    private const E2E_TEST_WITHOUT_FIXTURE_DIR = [
+        'e2e_038',
+    ];
+
     /**
      * @return list<string>
      */
@@ -74,6 +78,7 @@ private static function findE2ENames(): array
                 iterator_to_array($finder, false),
             ),
         );
+        $names = [...$names, ...self::E2E_TEST_WITHOUT_FIXTURE_DIR];
 
         sort($names, SORT_STRING);
 

tests/AutoReview/GAE2ETest.php

@@ -15,6 +15,7 @@
 namespace Humbug\PhpScoper\AutoReview;
 
 use PHPUnit\Framework\TestCase;
+use function array_diff;
 
 /**
  * @coversNothing
@@ -23,9 +24,13 @@
  */
 class GAE2ETest extends TestCase
 {
+    private const IGNORED_E2E_TESTS = [
+        'e2e_038',
+    ];
+
     public function test_github_actions_executes_all_the_e2e_tests(): void
     {
-        $expected = E2ECollector::getE2ENames();
+        $expected = array_diff(E2ECollector::getE2ENames(), self::IGNORED_E2E_TESTS);
         $actual = GAE2ECollector::getExecutedE2ETests();
 
         self::assertEqualsCanonicalizing($expected, $actual);