Zip: ignore mac osx specific folder when searching for composer.json

src/Composer/Util/Zip.php

@@ -82,6 +82,11 @@ class Zip
             $name = $zip->getNameIndex($i);
             $dirname = dirname($name);
 
+            // ignore OSX specific resource fork folder
+            if (strpos($name, '__MACOSX') !== false) {
+                continue;
+            }
+
             // handle archives with proper TOC
             if ($dirname === '.') {
                 $topLevelPaths[$name] = true;

tests/Composer/Test/Util/ZipTest.php

@@ -125,16 +125,4 @@ class ZipTest extends TestCase
 
         $this->assertEquals("{\n    \"name\": \"foo/bar\"\n}\n", $result);
     }
-
-    public function testThrowsExceptionIfMultipleComposerInSubFoldersWereFound()
-    {
-        if (!extension_loaded('zip')) {
-            $this->markTestSkipped('The PHP zip extension is not loaded.');
-            return;
-        }
-
-        $this->setExpectedException('\RuntimeException', 'Archive has more than one top level directories, and no composer.json was found on the top level, so it\'s an invalid archive. Top level paths found were: foo3/,__MACOSX/');
-
-        Zip::getComposerJson(__DIR__.'/Fixtures/Zip/multiple_subfolders.zip');
-    }
 }