test: Add a test for the min PHP version (#890)

The autoload modified by PHP-Scoper should be compatible with PHP 7.2.

Author: theofidry

.github/workflows/e2e-tests.yaml

@@ -99,6 +99,10 @@ jobs:
                 composer:
                     - 'composer:2.2'
                     - 'composer'
+                include:
+                    - e2e: 'e2e_039'
+                      php: '8.1'
+                      composer: 'composer:2.2'
 
         steps:
             -   name: Checkout

.makefile/e2e.file

@@ -404,6 +404,32 @@ _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
 
+.PHONY: e2e_039
+e2e_039: # Runs end-to-end tests for the fixture set e2e_037 — Codebase using scoped code
+e2e_039: $(PHP_SCOPER_PHAR_BIN)
+	rm -rf fixtures/set039-min-php-version/vendor || true
+
+	composer --working-dir=fixtures/set039-min-php-version install
+
+	$(PHP_SCOPER_PHAR) add-prefix . \
+		--working-dir=fixtures/set039-min-php-version \
+		--output-dir=../../build/set039 \
+		--force \
+		--no-interaction \
+		--stop-on-failure
+	composer --working-dir=build/set039 dump-autoload
+
+	docker run \
+		--interactive \
+		--platform=linux/amd64 \
+		--rm \
+		--workdir=/opt/php-scoper \
+		--volume="$$PWD":/opt/php-scoper \
+		php:7.2-cli-alpine \
+        php build/set039/index.php \
+		> build/set039/output
+	diff fixtures/set039-min-php-version/expected-output build/set039/output
+
 
 #
 # Rules from files

Makefile

@@ -171,7 +171,8 @@ e2e: e2e_004 \
 		e2e_035 \
 		e2e_036 \
 		e2e_037 \
-		e2e_038
+		e2e_038 \
+		e2e_039
 
 .PHONY: blackfire
 blackfire: ## Runs Blackfire profiling

fixtures/set039-min-php-version/composer.json

@@ -0,0 +1,2 @@
+{
+}

fixtures/set039-min-php-version/composer.lock

@@ -0,0 +1 @@
+OK

fixtures/set039-min-php-version/expected-output

@@ -0,0 +1,11 @@
+<?php
+
+namespace App;
+
+require file_exists(__DIR__.'/vendor/scoper-autoload.php')
+    ? __DIR__.'/vendor/scoper-autoload.php'
+    : __DIR__.'/vendor/autoload.php';
+
+class Greeter {}
+
+echo "OK\n";

fixtures/set039-min-php-version/index.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+use Isolated\Symfony\Component\Finder\Finder;
+
+// You can do your own things here, e.g. collecting symbols to expose dynamically
+// or files to exclude.
+// However beware that this file is executed by PHP-Scoper, hence if you are using
+// the PHAR it will be loaded by the PHAR. So it is highly recommended to avoid
+// to auto-load any code here: it can result in a conflict or even corrupt
+// the PHP-Scoper analysis.
+
+// Example of collecting files to include in the scoped build but to not scope
+// leveraging the isolated finder.
+$excludedFiles = array_map(
+    static fn (SplFileInfo $fileInfo) => $fileInfo->getPathName(),
+    iterator_to_array(
+        Finder::create()->files()->in(__DIR__),
+        false,
+    ),
+);
+
+return [
+    'expose-classes' => ['App\Greeter'],
+];

fixtures/set039-min-php-version/scoper.inc.php

@@ -26,6 +26,7 @@ class GAE2ETest extends TestCase
 {
     private const IGNORED_E2E_TESTS = [
         'e2e_038',
+        'e2e_039',
     ];
 
     public function test_github_actions_executes_all_the_e2e_tests(): void