1 Test attribute and basic functionality of StereoPannerNode.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
5 PASS panner.numberOfInputs === 1 is true
6 PASS panner.numberOfOutputs === 1 is true
7 PASS panner.pan.defaultValue === 0.0 is true
8 PASS panner.pan.value === 0.0 is true
9 PASS panner.pan.value === 1.0 is true
10 PASS panner.channelCount = 1 did not throw exception.
11 PASS panner.channelCount = 3 threw exception NotSupportedError: Failed to set the 'channelCount' property on 'AudioNode': The channelCount provided (3) is outside the range [1, 2]..
12 PASS panner.channelCountMode = "explicit" did not throw exception.
13 PASS panner.channelCountMode = "max" threw exception NotSupportedError: Failed to set the 'channelCountMode' property on 'AudioNode': StereoPanner: 'max' is not allowed.
14 PASS successfullyParsed is true