gecko-dev/uriloader/exthandler/tests/unit/test_getTypeFromExtension_e...

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/**
* 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);
}