Reinstall command test (#11502)

tests/Composer/Test/Command/ReinstallCommandTest.php

@@ -0,0 +1,69 @@
+<?php declare(strict_types=1);
+
+/*
+ * This file is part of Composer.
+ *
+ * (c) Nils Adermann <naderman@naderman.de>
+ *     Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Composer\Test\Command;
+
+use Composer\Test\TestCase;
+use Generator;
+
+class ReinstallCommandTest extends TestCase
+{
+    /**
+     * @dataProvider caseProvider
+     * @param array<string> $packages
+     * @param string $expected
+     */
+    public function testReinstallCommand(array $packages, string $expected): void
+    {
+        $this->initTempComposer([
+            'require' => [
+                'root/req' => '1.*',
+                'root/anotherreq' => '2.*'
+            ]
+        ]);
+
+        $rootReqPackage = self::getPackage('root/req');
+        $anotherReqPackage = self::getPackage('root/anotherreq');
+        $rootReqPackage->setType('metapackage');
+        $anotherReqPackage->setType('metapackage');
+
+        $this->createComposerLock([$rootReqPackage], [$anotherReqPackage]);
+        $this->createInstalledJson([$rootReqPackage], [$anotherReqPackage]);
+
+        $appTester = $this->getApplicationTester();
+        $appTester->run([
+            'command' => 'reinstall',
+            '--no-progress' => true,
+            '--no-plugins' => true,
+            'packages' => $packages
+        ]);
+
+        $this->assertSame($expected, trim($appTester->getDisplay(true)));
+    }
+
+    public function caseProvider(): Generator 
+    {
+        yield 'reinstall a package' => [
+            ['root/req', 'root/anotherreq'],
+'- Removing root/req (1.0.0)
+  - Removing root/anotherreq (1.0.0)
+  - Installing root/anotherreq (1.0.0)
+  - Installing root/req (1.0.0)'
+        ];
+
+        yield 'reinstall a package that is not installed' => [
+            ['root/unknownreq'],
+            '<warning>Pattern "root/unknownreq" does not match any currently installed packages.</warning>
+<warning>Found no packages to reinstall, aborting.</warning>'
+        ];
+    }
+}