| <!DOCTYPE html> |
| <html> |
| <head> |
| <title> |
| AudioDestinationNode |
| </title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| </head> |
| <body> |
| <script> |
| function assert_doesnt_throw(f, desc) { |
| try { |
| f(); |
| } catch (e) { |
| assert_true(false, desc); |
| return; |
| } |
| assert_true(true, desc); |
| } |
| |
| test(function() { |
| var ac = new AudioContext(); |
| |
| assert_equals(ac.destination.channelCount, 2, |
| "A DestinationNode should have two channels by default"); |
| |
| assert_greater_than_equal(ac.destination.maxChannelCount, 2, |
| "maxChannelCount should be >= 2"); |
| |
| assert_throws_dom("IndexSizeError", function() { |
| ac.destination.channelCount = ac.destination.maxChannelCount + 1 |
| }, `Setting the channelCount to something greater than |
| the maxChannelCount should throw IndexSizeError`); |
| |
| assert_throws_dom("NotSupportedError", function() { |
| ac.destination.channelCount = 0; |
| }, "Setting the channelCount to 0 should throw NotSupportedError"); |
| |
| assert_doesnt_throw(function() { |
| ac.destination.channelCount = ac.destination.maxChannelCount; |
| }, "Setting the channelCount to maxChannelCount should not throw"); |
| |
| assert_doesnt_throw(function() { |
| ac.destination.channelCount = 1; |
| }, "Setting the channelCount to 1 should not throw"); |
| }); |
| |
| </script> |
| </body> |
| </html> |
