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gaia/apps/sharedtest/test/unit/mime_mapper_test.js

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+'use strict';
+
+/* global MimeMapper */
+
+require('/shared/js/mime_mapper.js');
+
+suite('Shared library mime_mapper api tests', function() {
+
+  suite('parse extension test', function() {
+    test('Filename with extension', function() {
+      var ext = MimeMapper._parseExtension('test.jpg');
+      assert.equal(ext, 'jpg');
+    });
+
+    test('Filename without extension', function() {
+      var ext = MimeMapper._parseExtension('test');
+      assert.equal(ext, '');
+    });
+
+    test('Filename is empty string', function() {
+      var ext = MimeMapper._parseExtension('');
+      assert.equal(ext, '');
+    });
+  });
+
+  suite('guess valid type from file properties test', function() {
+    test('Filename/mimetype is matched', function() {
+      var mimetype =
+        MimeMapper.guessTypeFromFileProperties('test.jpg', 'image/jpeg');
+      assert.equal(mimetype, 'image/jpeg');
+    });
+
+    test('Filename without extension but mimetype supported', function() {
+      var mimetype =
+        MimeMapper.guessTypeFromFileProperties('test', 'image/jpeg');
+      assert.equal(mimetype, 'image/jpeg');
+    });
+
+    test('Extension unsupported but mimetype supported', function() {
+      var mimetype =
+        MimeMapper.guessTypeFromFileProperties('test.txt', 'image/jpeg');
+      assert.equal(mimetype, 'image/jpeg');
+    });
+
+    test('Filename with valid extension but mimetype unsupported', function() {
+      var mimetype =
+        MimeMapper.guessTypeFromFileProperties('test.jpg',
+          'application/download');
+      assert.equal(mimetype, 'image/jpeg');
+    });
+
+    test('Filename and mimetype are both unsupported', function() {
+      var mimetype =
+        MimeMapper.guessTypeFromFileProperties('test',
+          'application/download');
+      assert.equal(mimetype, '');
+    });
+  });
+
+  suite('Check is filename matches type test', function() {
+    test('Extension/mimetype matches', function() {
+      var match = MimeMapper.isFilenameMatchesType('test.jpg', 'image/jpeg');
+      assert.isTrue(match);
+    });
+
+    test('Extension/mimetype does not match', function() {
+      var match = MimeMapper.isFilenameMatchesType('test.txt', 'image/jpeg');
+      assert.isFalse(match);
+    });
+
+    test('Filename without extension', function() {
+      var match = MimeMapper.isFilenameMatchesType('test', 'image/jpeg');
+      assert.isFalse(match);
+    });
+  });
+
+  suite('Ensure filename matches type test', function() {
+    test('Filename/mimetype is matched', function() {
+      var filename =
+        MimeMapper.ensureFilenameMatchesType('test.jpg', 'image/jpeg');
+      assert.equal(filename, 'test.jpg');
+    });
+
+    test('Filename without extension but mimetype supported', function() {
+      var filename =
+        MimeMapper.ensureFilenameMatchesType('test', 'image/jpeg');
+      assert.equal(filename, 'test.jpg');
+    });
+
+    test('Extension unsupported but mimetype supported', function() {
+      var filename =
+        MimeMapper.ensureFilenameMatchesType('test.txt', 'image/jpeg');
+      assert.equal(filename, 'test.txt.jpg');
+    });
+
+    test('Filename with valid extension but mimetype unsupported', function() {
+      var filename =
+        MimeMapper.ensureFilenameMatchesType('test.jpg',
+          'application/download');
+      assert.equal(filename, 'test.jpg');
+    });
+
+    test('Filename and mimetype are both unsupported', function() {
+      var filename =
+        MimeMapper.ensureFilenameMatchesType('test',
+          'application/download');
+      assert.equal(filename, 'test');
+    });
+  });
+});