Add tests for CSSMin::getMimeType

Direct follow up for I1768646. The tests are copied from my patch
If985f33, with one important difference: Now the file extension always
wins. Mismatches are not fixed any more by this code. This is intended.
See the discussion at I1768646.

Change-Id: I06b873a808d58ae7e53272765b156ac0fa293c2c

diff --git a/tests/phpunit/includes/libs/CSSMinTest.php b/tests/phpunit/includes/libs/CSSMinTest.php
index 2e5c0bb..42f08cc 100644 (file)
--- a/tests/phpunit/includes/libs/CSSMinTest.php
+++ b/tests/phpunit/includes/libs/CSSMinTest.php
@@ -18,6 +18,81 @@ class CSSMinTest extends MediaWikiTestCase {
                ] );
        }
 
+       /**
+        * @dataProvider mimeTypeProvider
+        */
+       public function testGetMimeType( $fileContents, $fileExtension, $expected ) {
+               $fileName = wfTempDir() . DIRECTORY_SEPARATOR . uniqid( 'MW_PHPUnit_CSSMinTest_' ) . '.'
+                       . $fileExtension;
+               $this->addTmpFiles( $fileName );
+               file_put_contents( $fileName, $fileContents );
+               $this->assertSame( $expected, CSSMin::getMimeType( $fileName ) );
+       }
+
+       public function mimeTypeProvider() {
+               return [
+                       'JPEG with short extension' => [
+                               "\xFF\xD8\xFF",
+                               'jpg',
+                               'image/jpeg'
+                       ],
+                       'JPEG with long extension' => [
+                               "\xFF\xD8\xFF",
+                               'jpeg',
+                               'image/jpeg'
+                       ],
+                       'PNG' => [
+                               "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A",
+                               'png',
+                               'image/png'
+                       ],
+
+                       'PNG extension but JPEG content' => [
+                               "\xFF\xD8\xFF",
+                               'png',
+                               'image/png'
+                       ],
+                       'JPEG extension but PNG content' => [
+                               "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A",
+                               'jpg',
+                               'image/jpeg'
+                       ],
+                       'PNG extension but SVG content' => [
+                               '<?xml version="1.0"?><svg></svg>',
+                               'png',
+                               'image/png'
+                       ],
+                       'SVG extension but PNG content' => [
+                               "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A",
+                               'svg',
+                               'image/svg+xml'
+                       ],
+
+                       'SVG with all headers' => [
+                               '<?xml version="1.0"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" '
+                               . '"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg></svg>',
+                               'svg',
+                               'image/svg+xml'
+                       ],
+                       'SVG with XML header only' => [
+                               '<?xml version="1.0"?><svg></svg>',
+                               'svg',
+                               'image/svg+xml'
+                       ],
+                       'SVG with DOCTYPE only' => [
+                               '<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" '
+                               . '"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg></svg>',
+                               'svg',
+                               'image/svg+xml'
+                       ],
+                       'SVG without any header' => [
+                               '<svg></svg>',
+                               'svg',
+                               'image/svg+xml'
+                       ],
+               ];
+       }
+
        /**
         * @dataProvider provideMinifyCases
         * @covers CSSMin::minify