added an autoload-dev section

composer.json

@@ -39,6 +39,9 @@
     "autoload": {
         "psr-0": { "Composer": "src/" }
     },
+    "autoload-dev": {
+        "psr-0": { "Composer\\Test": "tests/" }
+    },
     "bin": ["bin/composer"],
     "extra": {
         "branch-alias": {

doc/04-schema.md

@@ -516,6 +516,27 @@ Example:
         }
     }
 
+### autoload-dev <span>(root-only)</span>
+
+This section allows to define autoload rules for development purpose.
+
+If you're generating classmaps from your PSR-0 namespaces, you're probably concerned
+about performance, if so, you'll also don't want your test classes to be mixed up
+with your regular classes in those classmaps.
+
+Therefore, it is a good idea to rely on a dedicated path for your unit tests.
+
+Example:
+
+    {
+        "autoload": {
+            "psr-0": { "MyLibrary": "src/" }
+        },
+        "autoload-dev": {
+            "psr-0": { "MyLibrary\\Tests": "tests/" }
+        }
+    }
+
 ### include-path
 
 > **DEPRECATED**: This is only present to support legacy projects, and all new code

res/composer-schema.json

@@ -226,6 +226,30 @@
                 }
             }
         },
+        "autoload-dev": {
+            "type": "object",
+            "description": "Description of additional autoload rules for development purpose (eg. a test suite).",
+            "properties": {
+                "psr-0": {
+                    "type": "object",
+                    "description": "This is a hash of namespaces (keys) and the directories they can be found into (values, can be arrays of paths) by the autoloader.",
+                    "additionalProperties": true
+                },
+                "psr-4": {
+                    "type": "object",
+                    "description": "This is a hash of namespaces (keys) and the PSR-4 directories they can map to (values, can be arrays of paths) by the autoloader.",
+                    "additionalProperties": true
+                },
+                "classmap": {
+                    "type": "array",
+                    "description": "This is an array of directories that contain classes to be included in the class-map generation process."
+                },
+                "files": {
+                    "type": "array",
+                    "description": "This is an array of files that are always required on every request."
+                }
+            }
+        },
         "archive": {
             "type": ["object"],
             "description": "Options for creating package archives for distribution.",

src/Composer/Autoload/AutoloadGenerator.php

@@ -32,11 +32,18 @@ class AutoloadGenerator
      */
     private $eventDispatcher;
 
+    private $devMode = false;
+
     public function __construct(EventDispatcher $eventDispatcher)
     {
         $this->eventDispatcher = $eventDispatcher;
     }
 
+    public function setDevMode($devMode = true)
+    {
+        $this->devMode = (boolean) $devMode;
+    }
+
     public function dump(Config $config, InstalledRepositoryInterface $localRepo, PackageInterface $mainPackage, InstallationManager $installationManager, $targetDir, $scanPsr0Packages = false, $suffix = '')
     {
         $this->eventDispatcher->dispatchScript(ScriptEvents::PRE_AUTOLOAD_DUMP);
@@ -569,6 +576,9 @@ FOOTER;
             list($package, $installPath) = $item;
 
             $autoload = $package->getAutoload();
+            if ($this->devMode && $package === $mainPackage) {
+                $autoload = array_merge_recursive($autoload, $package->getDevAutoload());
+            }
 
             // skip misconfigured packages
             if (!isset($autoload[$type]) || !is_array($autoload[$type])) {

src/Composer/Command/DumpAutoloadCommand.php

@@ -31,6 +31,7 @@ class DumpAutoloadCommand extends Command
             ->setDescription('Dumps the autoloader')
             ->setDefinition(array(
                 new InputOption('optimize', 'o', InputOption::VALUE_NONE, 'Optimizes PSR0 packages to be loaded with classmaps too, good for production.'),
+                new InputOption('dev', null, InputOption::VALUE_NONE, 'Enables dev autoload.'),
             ))
             ->setHelp(<<<EOT
 <info>php composer.phar dump-autoload</info>
@@ -59,6 +60,8 @@ EOT
             $output->writeln('<info>Generating autoload files</info>');
         }
 
-        $composer->getAutoloadGenerator()->dump($config, $localRepo, $package, $installationManager, 'composer', $optimize);
+        $generator = $composer->getAutoloadGenerator();
+        $generator->setDevMode($input->getOption('dev'));
+        $generator->dump($config, $localRepo, $package, $installationManager, 'composer', $optimize);
     }
 }

src/Composer/Installer.php

@@ -290,6 +290,7 @@ class Installer
                 $this->io->write('<info>Generating autoload files</info>');
             }
 
+            $this->autoloadGenerator->setDevMode($this->devMode);
             $this->autoloadGenerator->dump($this->config, $localRepo, $this->package, $this->installationManager, 'composer', $this->optimizeAutoloader);
 
             if ($this->runScripts) {

src/Composer/Package/AliasPackage.php

@@ -245,6 +245,10 @@ class AliasPackage extends BasePackage implements CompletePackageInterface
     {
         return $this->aliasOf->getAutoload();
     }
+    public function getDevAutoload()
+    {
+        return $this->aliasOf->getDevAutoload();
+    }
     public function getIncludePaths()
     {
         return $this->aliasOf->getIncludePaths();

src/Composer/Package/Dumper/ArrayDumper.php

@@ -31,6 +31,7 @@ class ArrayDumper
             'extra',
             'installationSource' => 'installation-source',
             'autoload',
+            'devAutoload' => 'autoload-dev',
             'notificationUrl' => 'notification-url',
             'includePaths' => 'include-path',
         );

src/Composer/Package/Loader/ArrayLoader.php

@@ -130,6 +130,10 @@ class ArrayLoader implements LoaderInterface
             $package->setAutoload($config['autoload']);
         }
 
+        if (isset($config['autoload-dev'])) {
+            $package->setDevAutoload($config['autoload-dev']);
+        }
+
         if (isset($config['include-path'])) {
             $package->setIncludePaths($config['include-path']);
         }

src/Composer/Package/Package.php

@@ -47,6 +47,7 @@ class Package extends BasePackage
     protected $devRequires = array();
     protected $suggests = array();
     protected $autoload = array();
+    protected $devAutoload = array();
     protected $includePaths = array();
     protected $archiveExcludes = array();
 
@@ -440,6 +441,24 @@ class Package extends BasePackage
         return $this->autoload;
     }
 
+    /**
+     * Set the dev autoload mapping
+     *
+     * @param array $autoload Mapping of dev autoloading rules
+     */
+    public function setDevAutoload(array $devAutoload)
+    {
+        $this->devAutoload = $devAutoload;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getDevAutoload()
+    {
+        return $this->devAutoload;
+    }
+
     /**
      * Sets the list of paths added to PHP's include path.
      *

src/Composer/Package/PackageInterface.php

@@ -231,13 +231,25 @@ interface PackageInterface
      *
      * {"<type>": {"<namespace": "<directory>"}}
      *
-     * Type is either "psr-0" or "pear". Namespaces are mapped to directories
-     * for autoloading using the type specified.
+     * Type is either "psr-4", "psr-0", "classmap" or "files". Namespaces are mapped to
+     * directories for autoloading using the type specified.
      *
      * @return array Mapping of autoloading rules
      */
     public function getAutoload();
 
+    /**
+     * Returns an associative array of dev autoloading rules
+     *
+     * {"<type>": {"<namespace": "<directory>"}}
+     *
+     * Type is either "psr-4", "psr-0", "classmap" or "files". Namespaces are mapped to
+     * directories for autoloading using the type specified.
+     *
+     * @return array Mapping of dev autoloading rules
+     */
+    public function getDevAutoload();
+
     /**
      * Returns a list of directories which should get added to PHP's
      * include path.

tests/Composer/Test/Autoload/AutoloadGeneratorTest.php

@@ -171,6 +171,74 @@ class AutoloadGeneratorTest extends TestCase
         $this->assertAutoloadFiles('classmap', $this->vendorDir.'/composer', 'classmap');
     }
     
+    public function testMainPackageDevAutoloading()
+    {
+        $package = new Package('a', '1.0', '1.0');
+        $package->setAutoload(array(
+            'psr-0' => array(
+                'Main' => 'src/',
+            ),
+        ));
+        $package->setDevAutoload(array(
+            'files' => array('devfiles/foo.php'),
+        ));
+
+        $this->repository->expects($this->once())
+            ->method('getCanonicalPackages')
+            ->will($this->returnValue(array()));
+
+        $this->fs->ensureDirectoryExists($this->workingDir.'/composer');
+        $this->fs->ensureDirectoryExists($this->workingDir.'/src/Main');
+        file_put_contents($this->workingDir.'/src/Main/ClassMain.php', '<?php namespace Main; class ClassMain {}');
+
+        $this->fs->ensureDirectoryExists($this->workingDir.'/devfiles');
+        file_put_contents($this->workingDir.'/devfiles/foo.php', '<?php function foo() { echo "foo"; }');
+
+        // generate autoload files with the dev mode set to true
+        $this->generator->setDevMode(true);
+        $this->generator->dump($this->config, $this->repository, $package, $this->im, 'composer', true, '_1');
+        
+        // check standard autoload
+        $this->assertAutoloadFiles('main4', $this->vendorDir.'/composer');
+        $this->assertAutoloadFiles('classmap7', $this->vendorDir.'/composer', 'classmap');
+        
+        // make sure dev autoload is correctly dumped
+        $this->assertAutoloadFiles('files2', $this->vendorDir.'/composer', 'files');
+    }
+
+    public function testMainPackageDevAutoloadingDisabledByDefault()
+    {
+        $package = new Package('a', '1.0', '1.0');
+        $package->setAutoload(array(
+            'psr-0' => array(
+                'Main' => 'src/',
+            ),
+        ));
+        $package->setDevAutoload(array(
+            'files' => array('devfiles/foo.php'),
+        ));
+
+        $this->repository->expects($this->once())
+            ->method('getCanonicalPackages')
+            ->will($this->returnValue(array()));
+
+        $this->fs->ensureDirectoryExists($this->workingDir.'/composer');
+        $this->fs->ensureDirectoryExists($this->workingDir.'/src/Main');
+        file_put_contents($this->workingDir.'/src/Main/ClassMain.php', '<?php namespace Main; class ClassMain {}');
+
+        $this->fs->ensureDirectoryExists($this->workingDir.'/devfiles');
+        file_put_contents($this->workingDir.'/devfiles/foo.php', '<?php function foo() { echo "foo"; }');
+
+        $this->generator->dump($this->config, $this->repository, $package, $this->im, 'composer', true, '_1');
+
+        // check standard autoload
+        $this->assertAutoloadFiles('main4', $this->vendorDir.'/composer');
+        $this->assertAutoloadFiles('classmap7', $this->vendorDir.'/composer', 'classmap');
+
+        // make sure dev autoload is disabled when dev mode is set to false
+        $this->assertFalse(is_file($this->vendorDir.'/composer/autoload_files.php'));
+    }
+    
     public function testVendorDirSameAsWorkingDir()
     {
         $this->vendorDir = $this->workingDir;

tests/Composer/Test/Autoload/Fixtures/autoload_classmap7.php

@@ -0,0 +1,10 @@
+<?php
+
+// autoload_classmap.php @generated by Composer
+
+$vendorDir = dirname(dirname(__FILE__));
+$baseDir = dirname($vendorDir);
+
+return array(
+    'Main\\ClassMain' => $baseDir . '/src/Main/ClassMain.php',
+);

tests/Composer/Test/Autoload/Fixtures/autoload_files2.php

@@ -0,0 +1,10 @@
+<?php
+
+// autoload_files.php @generated by Composer
+
+$vendorDir = dirname(dirname(__FILE__));
+$baseDir = dirname($vendorDir);
+
+return array(
+    $baseDir . '/devfiles/foo.php',
+);

tests/Composer/Test/Autoload/Fixtures/autoload_main4.php

@@ -0,0 +1,10 @@
+<?php
+
+// autoload_namespaces.php @generated by Composer
+
+$vendorDir = dirname(dirname(__FILE__));
+$baseDir = dirname($vendorDir);
+
+return array(
+    'Main' => array($baseDir . '/src'),
+);

tests/bootstrap.php

@@ -13,6 +13,8 @@
 error_reporting(E_ALL);
 
 $loader = require __DIR__.'/../src/bootstrap.php';
+
+// to be removed
 $loader->add('Composer\Test', __DIR__);
 
 require __DIR__.'/Composer/TestCase.php';