LayoutTests/editing/execCommand/12244.html was added by Bug 12244 in r20071. However, it calls setTimeout() without calling waitUntilDone()/notifyDone(), so it doesn't actually test window.find() because the test ends before the runTest() method is called. Adding waitUntilDone()/notifyDone(): diff --git a/LayoutTests/editing/execCommand/12244.html b/LayoutTests/editing/execCommand/12244.html index 73660c3..af4800e 100644 --- a/LayoutTests/editing/execCommand/12244.html +++ b/LayoutTests/editing/execCommand/12244.html @@ -1,3 +1,5 @@ +<html> +<body> This is a test for window.find(). <br><br> Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in Liberty, and ded @@ -19,12 +21,18 @@ function assert(expected, actual, error) } function runTest() { - assert(window.find("now we are"), true, "'now we are' wasn't found"); - assert(window.find(), true, "'now we are' wasn't found"); + assert(window.find("now we are", false), true, "'now we are' wasn't found"); + assert(window.find(), true, "'now we are' wasn't found"); + if (window.testRunner) { + window.testRunner.notifyDone(); + } } if (window.testRunner) { window.testRunner.dumpEditingCallbacks(); window.testRunner.dumpAsText(); + window.testRunner.waitUntilDone(); } window.setTimeout(runTest, 100); </script> +</body> +</html> Causes the test to fail: --- /tmp/layout-test-results-X/editing/execCommand/12244-expected.txt +++ /tmp/layout-test-results-X/editing/execCommand/12244-actual.txt @@ -1,6 +1,7 @@ +EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification This is a test for window.find(). Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in Liberty, and dedicated to the proposition that all men are created equal. Now we are engaged in a great civil war, testing whether that nation, or any nation so conceived and so dedicated, can long endure. We are met on a great battle-field of that war. We have come to dedicate a portion of that field, as a final resting place for those who here gave their lives that that nation might live. It is altogether fitting and proper that we should do this. - +Error: 'now we are' wasn't found
FWIW, at Mozilla we changed mochitests to fail if they run no asserts, and caught a number of cases like this where nothing was actually being tested due to a test bug: https://bugzilla.mozilla.org/show_bug.cgi?id=735805