| <!DOCTYPE html> |
| <title>TextTrackCue exceptions are properly messaged to developers</title> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <script> |
| function getExceptionMsg(property) { |
| return "Failed to set the '" + property |
| + "' property on 'TextTrackCue': The provided double value is non-finite."; |
| } |
| var cue = new VTTCue(0, 0, "Test."); |
| function testProperty(property) { |
| var expected_exception_msg = getExceptionMsg(property); |
| test(function() { |
| var testValues = [Number.NaN, Number.POSITIVE_INFINITY, Number.NEGATIVE_INFINITY]; |
| testValues.forEach(function(value) { |
| try { |
| cue[property] = value; |
| assert_unreached("should throw"); |
| } catch (e) { |
| assert_equals(e.name, "TypeError"); |
| assert_equals(e.message, expected_exception_msg); |
| } |
| }); |
| }, expected_exception_msg); |
| } |
| testProperty("startTime"); |
| testProperty("endTime"); |
| </script> |
