TASK: Add tests for mapping class

* Add minimum phpdoc.
* Add tests.
* Fix issue in class.
* Fix phpmd issues.

composer.json

@@ -31,6 +31,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "5.7.*",
+        "mikey179/vfsStream": "1.6.*",
         "symfony/finder": "3.2.*",
         "phpmd/phpmd": "2.6.*",
         "pdepend/pdepend": "2.5.*"

src/Standards/Typo3Update/Feature/LegacyClassnameMapping.php

@@ -69,15 +69,32 @@ final class LegacyClassnameMapping
     // Singleton implementation - End
 
     /**
-     * Contains mappings as defined by composer for alias mapping.
      * @var array
      */
     protected $typo3Mappings = [];
+    /**
+     * @var array
+     */
     protected $typo3MappingsKeys = [];
 
+    /**
+     * @var array
+     */
     protected $mappings = [];
+    /**
+     * @var array
+     */
     protected $mappingsKeys = [];
 
+    /**
+     * @var bool
+     */
+    protected $dirty = false;
+
+    /**
+     * @param array $originalArray
+     * @param array $targetVariable
+     */
     protected function buildKeyArray($originalArray, &$targetVariable)
     {
         foreach (array_keys($originalArray) as $key) {
@@ -109,7 +126,6 @@ final class LegacyClassnameMapping
      */
     public function getNewClassname($classname)
     {
-        $lowerVersion = strtolower($classname);
         if ($this->isLegacyTypo3Classname($classname) || $this->isLegacyTypo3Classname(strtolower($classname))) {
             return $this->typo3Mappings[$this->getTypo3MappingKey($classname)];
         }
@@ -117,6 +133,10 @@ final class LegacyClassnameMapping
         return $this>mappings[$this->getLegacyMappingKey($classname)];
     }
 
+    /**
+     * @param string $classname
+     * @return string
+     */
     protected function getTypo3MappingKey($classname)
     {
         $lowerVersion = strtolower($classname);
@@ -127,6 +147,10 @@ final class LegacyClassnameMapping
         return $classname;
     }
 
+    /**
+     * @param string $classname
+     * @return string
+     */
     protected function getLegacyMappingKey($classname)
     {
         $lowerVersion = strtolower($classname);
@@ -137,11 +161,19 @@ final class LegacyClassnameMapping
         return $classname;
     }
 
+    /**
+     * @param string $classname
+     * @return bool
+     */
     protected function isLegacyTypo3Classname($classname)
     {
         return isset($this->typo3MappingsKeys[$classname]);
     }
 
+    /**
+     * @param string $classname
+     * @return bool
+     */
     protected function isLegacyMappingClassname($classname)
     {
         return isset($this->mappingsKeys[$classname]);
@@ -159,6 +191,21 @@ final class LegacyClassnameMapping
     public function addLegacyClassname($legacyClassname, $newClassname)
     {
         $this->mappings[$legacyClassname] = $newClassname;
+        $this->mappingsKeys[strtolower($legacyClassname)] = $legacyClassname;
+        $this->dirty = true;
+    }
+
+    public function persistMappings()
+    {
+        if ($this->dirty === false) {
+            return;
+        }
+
+        file_put_contents(
+            Options::getMappingFile(),
+            '<?php' . PHP_EOL . 'return ' . var_export($this->mappings, true) . ';' . PHP_EOL
+        );
+        $this->dirty = false;
     }
 
     /**
@@ -166,16 +213,6 @@ final class LegacyClassnameMapping
      */
     public function __destruct()
     {
-        // For some reasons desctruct is called multiple times, while construct
-        // is called once. Until we know the issue and fix it, this is our
-        // workaround to not break the file and do stuff in an unkown instance.
-        if ($this !== static::$instance) {
-            return;
-        }
-
-        file_put_contents(
-            Options::getMappingFile(),
-            '<?php' . PHP_EOL . 'return ' . var_export($this->mappings, true) . ';'
-        );
+        $this->persistMappings();
     }
 }

tests/Feature/LegacyClassnameMappingTest.php

@@ -0,0 +1,110 @@
+<?php
+namespace Typo3Update\Tests\Feature;
+
+/*
+ * Copyright (C) 2017  Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+use PHPUnit\Framework\TestCase;
+use Typo3Update\Feature\LegacyClassnameMapping;
+use org\bovigo\vfs\vfsStream;
+
+class LegacyClassnameMappingTest extends TestCase
+{
+    /**
+     * @var \org\bovigo\vfs\vfsStreamDirectory
+     */
+    protected $fileSystem;
+
+    /**
+     * @var LegacyClassnameMapping
+     */
+    protected $subject;
+
+    /**
+     * @param string $fileName
+     * @return string
+     */
+    protected function getFixturePath($fileName)
+    {
+        return implode(DIRECTORY_SEPARATOR, [
+            __DIR__, '..', 'Fixtures', 'Standards','Typo3Update',
+            'Feature', 'LegacyClassnameMapping', $fileName,
+        ]);
+    }
+
+    public function setUp()
+    {
+        $this->fileSystem = vfsStream::setup('root', null, [
+            'LegacyClassnames.php' => file_get_contents($this->getFixturePath('MappingContent.php')),
+        ]);
+
+        $GLOBALS['PHP_CODESNIFFER_CONFIG_DATA'] = [
+            'mappingFile' => vfsStream::url('root/LegacyClassnames.php'),
+        ];
+
+        $this->subject = LegacyClassnameMapping::getInstance();
+    }
+
+    /**
+     * @test
+     */
+    public function insensitivityLookupWorks()
+    {
+        $this->assertFalse(
+            $this->subject->isLegacyClassname('Tx_About_Controller_Aboutcontroller', false),
+            'Classname was returned to be legacy but should not due to lowercase version and case sensitivity.'
+        );
+        $this->assertTrue(
+            $this->subject->isLegacyClassname('Tx_About_Controller_Aboutcontroller'),
+            'Classname was not returned to be legacy but should due to case insensitivity.'
+        );
+    }
+
+    /**
+     * @test
+     */
+    public function addingLegacyClassnamesWillAdjustLookupAndBePersisted()
+    {
+        $this->assertFalse(
+            $this->subject->isLegacyClassname('Tx_ExtName_Controller_ExampleController'),
+            'Classname is not configured but returned to be legacy.'
+        );
+
+        $this->subject->addLegacyClassname('Tx_ExtName_Controller_ExampleController', '\\Vendor\\ExtName\\Controller\\ExampleController');
+
+        $this->assertTrue(
+            $this->subject->isLegacyClassname('Tx_ExtName_Controller_ExampleController'),
+            'Classname is configured but not returned to be legacy.'
+        );
+
+        $this->subject->persistMappings();
+
+        $this->assertSame(
+            file_get_contents($this->getFixturePath('ExpectedMappingContent.php')),
+            file_get_contents(vfsStream::url('root/LegacyClassnames.php')),
+            'Persisted mappings are not as expected.'
+        );
+    }
+
+    public function tearDown()
+    {
+        unset($this->subject);
+        unset($this->fileSystem);
+    }
+}

tests/Fixtures/Standards/Typo3Update/Feature/LegacyClassnameMapping/ExpectedMappingContent.php

@@ -0,0 +1,4 @@
+<?php
+return array (
+  'Tx_ExtName_Controller_ExampleController' => '\\Vendor\\ExtName\\Controller\\ExampleController',
+);

tests/Fixtures/Standards/Typo3Update/Feature/LegacyClassnameMapping/MappingContent.php

@@ -0,0 +1,3 @@
+<?php
+return array (
+);