Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/composer/installers/tests/Composer/Installers/Test/PiwikInstallerTest.php

@@ -0,0 +1,63 @@
+<?php
+namespace Composer\Installers\Test;
+
+use Composer\Composer;
+use Composer\Installers\PiwikInstaller;
+use Composer\Package\Package;
+use Composer\Package\PackageInterface;
+
+/**
+ * Class PiwikInstallerTest
+ *
+ * @package Composer\Installers\Test
+ */
+class PiwikInstallerTest extends TestCase
+{
+    /**
+     * @varComposer
+     */
+    private $composer;
+
+    /**
+     * @var PackageInterface
+     */
+    private $io;
+
+    /**
+     * @var Package
+     */
+    private $package;
+
+    /**
+     * setUp
+     *
+     * @return void
+     */
+    public function setUp()
+    {
+        $this->package = new Package('VisitSummary', '1.0', '1.0');
+        $this->io = $this->getMock('Composer\IO\PackageInterface');
+        $this->composer = new Composer();
+    }
+
+    /**
+     * testInflectPackageVars
+     *
+     * @return void
+     */
+    public function testInflectPackageVars()
+    {
+        $installer = new PiwikInstaller($this->package, $this->composer);
+        $result = $installer->inflectPackageVars(array('name' => 'VisitSummary'));
+        $this->assertEquals($result, array('name' => 'VisitSummary'));
+
+        $installer = new PiwikInstaller($this->package, $this->composer);
+        $result = $installer->inflectPackageVars(array('name' => 'visit-summary'));
+        $this->assertEquals($result, array('name' => 'VisitSummary'));
+
+        $installer = new PiwikInstaller($this->package, $this->composer);
+        $result = $installer->inflectPackageVars(array('name' => 'visit_summary'));
+        $this->assertEquals($result, array('name' => 'VisitSummary'));
+    }
+
+}