MAGETWO-38838: Create composer management library and reuse it in both updater and setup wizard

- added unittest

Author: Ivan Gavryshko

app/code/Magento/Composer/MagentoComposerApplication.php

@@ -104,14 +104,13 @@ public function getComposer()
      */
     public function runComposerCommand(array $commandParams)
     {
-        $this->consoleApplication->resetComposer();
-
         if (!$this->configIsSet) {
             throw new \Exception('Please call setConfig method to configure composer');
         }
 
+        $this->consoleApplication->resetComposer();
+
         $input = $this->consoleArrayInputFactory->create($commandParams);
-        $this->consoleApplication->setAutoExit(false);
 
         $exitCode = $this->consoleApplication->run($input, $this->consoleOutput);
 

dev/tests/unit/ConsoleArrayInputFactoryTest.php

@@ -23,4 +23,3 @@ public function testCreate()
         $this->assertInstanceOf('\Symfony\Component\Console\Input\ArrayInput', $this->factory->create([]));
     }
 }
-

dev/tests/unit/MagentoComposerApplicationTest.php

@@ -0,0 +1,95 @@
+<?php
+/**
+ * Copyright © 2015 Magento. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+use Composer\Console\Application;
+use Magento\Composer\MagentoComposerApplication;
+use Magento\Composer\ConsoleArrayInputFactory;
+use Symfony\Component\Console\Output\BufferedOutput;
+
+class MagentoComposerApplicationTest extends PHPUnit_Framework_TestCase {
+
+    /**
+     * @var MagentoComposerApplication
+     */
+    protected $application;
+
+    /**
+     * @var Application|\PHPUnit_Framework_MockObject_MockObject
+     */
+    protected $composerApplication;
+
+    /**
+     * @var ConsoleArrayInputFactory|\PHPUnit_Framework_MockObject_MockObject
+     */
+    protected $inputFactory;
+
+    /**
+     * @var BufferedOutput|\PHPUnit_Framework_MockObject_MockObject
+     */
+    protected $consoleOutput;
+
+    protected function setUp()
+    {
+        $this->composerApplication = $this->getMock(
+            'Composer\Console\Application',
+            [
+                'resetComposer',
+                'create',
+                'run'
+            ],
+            [],
+            '',
+            false,
+            false
+        );
+        $this->inputFactory = $this->getMock('Magento\Composer\ConsoleArrayInputFactory', [], [], '', false);
+        $this->consoleOutput = $this->getMock('Symfony\Component\Console\Output\BufferedOutput', [], [], '', false);
+
+        $this->application = new MagentoComposerApplication(
+            $this->composerApplication,
+            $this->inputFactory,
+            $this->consoleOutput
+        );
+    }
+
+    /**
+     * @expectedException \Exception
+     * @expectedExceptionMessage Please call setConfig method to configure composer
+     */
+    function testMissedConfigSet()
+    {
+        $this->application->runComposerCommand([]);
+    }
+
+    /**
+     * @expectedException \RuntimeException
+     * @expectedExceptionMessage Command "update" failed
+     */
+    function testWrongExitCode()
+    {
+        $this->application->setConfig('path1', 'path2');
+        $this->composerApplication->expects($this->once())->method('run')->willReturn(1);
+
+        $this->application->runComposerCommand(['command'=>'update']);
+    }
+
+    function testRunCommand()
+    {
+        $inputData = ['command'=>'update'];
+
+        $this->application->setConfig('path1', 'path2');
+        $this->composerApplication->expects($this->once())->method('resetComposer');
+
+        $this->inputFactory->expects($this->once())->method('create')->with($inputData);
+
+        $this->consoleOutput->expects($this->once())->method('fetch')->willReturn('Nothing to update');
+
+        $this->composerApplication->expects($this->once())->method('run')->willReturn(0);
+
+        $message = $this->application->runComposerCommand($inputData);
+        $this->assertEquals('Nothing to update', $message);
+    }
+}