DX: Add AutoReview/ComposerTest

tests/AutoReview/ComposerTest.php

@@ -0,0 +1,54 @@
+<?php
+
+/*
+ * This file is part of PHP CS Fixer.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *     Dariusz Rumiński <dariusz.ruminski@gmail.com>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace PhpCsFixer\tests\AutoReview;
+
+use PhpCsFixer\Console\Application;
+use PhpCsFixer\Tests\TestCase;
+
+/**
+ * @author Dariusz Rumiński <dariusz.ruminski@gmail.com>
+ *
+ * @internal
+ *
+ * @coversNothing
+ * @group auto-review
+ */
+final class ComposerTest extends TestCase
+{
+    public function testBranchAlias()
+    {
+        $composerJson = json_decode(file_get_contents(__DIR__.'/../../composer.json'), true);
+
+        if (!isset($composerJson['extra']['branch-alias'])) {
+            $this->addToAssertionCount(1); // composer.json doesn't contain branch alias, all good!
+            return;
+        }
+
+        $this->assertSame(
+            array('dev-master' => $this->convertAppVersionToAliasedVersion(Application::VERSION)),
+            $composerJson['extra']['branch-alias']
+        );
+    }
+
+    /**
+     * @param string $version
+     *
+     * @return strting
+     */
+    private function convertAppVersionToAliasedVersion($version)
+    {
+        $parts = explode('.', $version, 3);
+
+        return sprintf('%d.%d-dev', $parts[0], $parts[1]);
+    }
+}