add size-based limit for files cache, fixes #1321

tests/Composer/Test/CacheTest.php

@@ -0,0 +1,94 @@
+<?php
+
+/*
+ * 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;
+
+use Composer\Cache;
+
+class CacheTest extends TestCase
+{
+    private $files, $root, $finder, $cache;
+
+    public function setUp()
+    {
+        $this->root = sys_get_temp_dir() . '/composer_testdir';
+        $this->ensureDirectoryExistsAndClear($this->root);
+
+        $this->files = array();
+        $zeros = str_repeat('0', 1000);
+        for ($i = 0; $i < 4; $i++) {
+            file_put_contents("{$this->root}/cached.file{$i}.zip", $zeros);
+            $this->files[] = new \SplFileInfo("{$this->root}/cached.file{$i}.zip");
+        }
+        $this->finder = $this->getMock('Symfony\Component\Finder\Finder');
+
+        $io = $this->getMock('Composer\IO\IOInterface');
+        $this->cache = $this->getMock(
+            'Composer\Cache',
+            array('getFinder'),
+            array($io, $this->root)
+        );
+        $this->cache
+            ->expects($this->any())
+            ->method('getFinder')
+            ->will($this->returnValue($this->finder));
+    }
+
+    public function testRemoveOutdatedFiles()
+    {
+        $outdated = array_slice($this->files, 1);
+        $this->finder
+            ->expects($this->once())
+            ->method('getIterator')
+            ->will($this->returnValue(new \ArrayIterator($outdated)));
+        $this->finder
+            ->expects($this->once())
+            ->method('date')
+            ->will($this->returnValue($this->finder));
+
+        $this->cache->gc(600, 1024 * 1024 * 1024);
+
+        for ($i = 1; $i < 4; $i++) {
+            $this->assertFileNotExists("{$this->root}/cached.file{$i}.zip");
+        }
+        $this->assertFileExists("{$this->root}/cached.file0.zip");
+    }
+
+    public function testRemoveFilesWhenCacheIsTooLarge()
+    {
+        $emptyFinder = $this->getMock('Symfony\Component\Finder\Finder');
+        $emptyFinder
+            ->expects($this->once())
+            ->method('getIterator')
+            ->will($this->returnValue(new \EmptyIterator()));
+
+        $this->finder
+            ->expects($this->once())
+            ->method('date')
+            ->will($this->returnValue($emptyFinder));
+        $this->finder
+            ->expects($this->once())
+            ->method('getIterator')
+            ->will($this->returnValue(new \ArrayIterator($this->files)));
+        $this->finder
+            ->expects($this->once())
+            ->method('sortByAccessedTime')
+            ->will($this->returnValue($this->finder));
+
+        $this->cache->gc(600, 1500);
+
+        for ($i = 0; $i < 3; $i++) {
+            $this->assertFileNotExists("{$this->root}/cached.file{$i}.zip");
+        }
+        $this->assertFileExists("{$this->root}/cached.file3.zip");
+    }
+}