1 files changed, 53 insertions, 0 deletions
diff --git a/uriloader/exthandler/tests/unit/test_getTypeFromExtension_ext_to_type_mapping.js b/uriloader/exthandler/tests/unit/test_getTypeFromExtension_ext_to_type_mapping.js
new file mode 100644
index 000000000..d83c486bb
--- /dev/null
+++ b/uriloader/exthandler/tests/unit/test_getTypeFromExtension_ext_to_type_mapping.js
@@ -0,0 +1,53 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Test for bug 508030 <https://bugzilla.mozilla.org/show_bug.cgi?id=508030>:
+ * nsIMIMEService.getTypeFromExtension fails to find a match in the
+ * "ext-to-type-mapping" category if the provided extension is not lowercase.
+ */
+function run_test() {
+  // --- Common services ---
+
+  const mimeService = Cc["@mozilla.org/mime;1"].
+                      getService(Ci.nsIMIMEService);
+
+  const categoryManager = Cc["@mozilla.org/categorymanager;1"].
+                          getService(Ci.nsICategoryManager);
+
+  // --- Test procedure ---
+
+  const kTestExtension          = "testextension";
+  const kTestExtensionMixedCase = "testExtensIon";
+  const kTestMimeType           = "application/x-testextension";
+
+  // Ensure that the test extension is not initially recognized by the operating
+  // system or the "ext-to-type-mapping" category.
+  try {
+    // Try and get the MIME type associated with the extension.
+    mimeService.getTypeFromExtension(kTestExtension);
+    // The line above should have thrown an exception.
+    do_throw("nsIMIMEService.getTypeFromExtension succeeded unexpectedly");
+  } catch (e if (e instanceof Ci.nsIException &&
+                 e.result == Cr.NS_ERROR_NOT_AVAILABLE)) {
+    // This is an expected exception, thrown if the type can't be determined.
+    // Any other exception would cause the test to fail.
+  }
+
+  // Add a temporary category entry mapping the extension to the MIME type.
+  categoryManager.addCategoryEntry("ext-to-type-mapping", kTestExtension,
+                                   kTestMimeType, false, true);
+
+  // Check that the mapping is recognized in the simple case.
+  var type = mimeService.getTypeFromExtension(kTestExtension);
+  do_check_eq(type, kTestMimeType);
+
+  // Check that the mapping is recognized even if the extension has mixed case.
+  type = mimeService.getTypeFromExtension(kTestExtensionMixedCase);
+  do_check_eq(type, kTestMimeType);
+
+  // Clean up after ourselves.
+  categoryManager.deleteCategoryEntry("ext-to-type-mapping", kTestExtension, false);
+}