| <!DOCTYPE html> |
| <title>SpeechSynthesisUtterance: Basic interface tests</title> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <script> |
| setup(function() { |
| if (window.internals) |
| internals.enableMockSpeechSynthesizer(window); |
| }); |
| |
| test(function() { |
| var utterance = new SpeechSynthesisUtterance(" "); |
| var restrictedFloatAttributes = [ 'volume', 'rate', 'pitch' ]; |
| for (var i in restrictedFloatAttributes) { |
| var attr = restrictedFloatAttributes[i]; |
| var before = utterance[attr]; |
| assert_throws_js(TypeError, function() { utterance[attr] = NaN; }, attr); |
| assert_throws_js(TypeError, function() { utterance[attr] = Infinity; }, attr); |
| assert_equals(utterance[attr], before, 'value is unchanged.'); |
| } |
| }, 'SpeechSynthesisUtterance, setting non-finite values.'); |
| </script> |
