| <!DOCTYPE HTML> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>Testing 'devicechange' event is fired correctly.</title> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <script> |
| promise_test(async (test) => { |
| let promise; |
| const devices1 = await navigator.mediaDevices.enumerateDevices(); |
| |
| promise = new Promise(resolve => { |
| navigator.mediaDevices.ondevicechange = resolve; |
| }); |
| const stream1 = await navigator.mediaDevices.getUserMedia({ audio:true, video:false }); |
| test.add_cleanup(() => stream1.getTracks().forEach(track => track.stop())); |
| |
| await promise; |
| const devices2 = await navigator.mediaDevices.enumerateDevices(); |
| |
| promise = new Promise(resolve => { |
| navigator.mediaDevices.ondevicechange = resolve; |
| }); |
| const stream2 = await navigator.mediaDevices.getUserMedia({ audio:false, video:true }); |
| test.add_cleanup(() => stream2.getTracks().forEach(track => track.stop())); |
| await promise; |
| |
| await promise; |
| const devices3 = await navigator.mediaDevices.enumerateDevices(); |
| |
| assert_equals(devices1.length, 2, "devices1 length"); |
| assert_equals(devices1[0].label, "", "devices1 first label"); |
| assert_equals(devices1[1].label, "", "devices1 second label"); |
| assert_equals(devices1[0].kind, "audioinput", "devices1 first kind"); |
| assert_equals(devices1[1].kind, "videoinput", "devices1 second kind"); |
| |
| assert_greater_than(devices2.length, devices1.length); |
| assert_greater_than(devices3.length, devices2.length); |
| |
| assert_not_equals(devices2[0].label, ""); |
| let hasCamera = false; |
| for (let device of devices2) { |
| if (device.kind === "videoinput") { |
| hasCamera = true; |
| assert_equals(device.label, "", "empty camera in devices2"); |
| } |
| } |
| assert_true(hasCamera, "hasCamera"); |
| |
| for (let device of devices3) |
| assert_not_equals(device.label, "", "devices3"); |
| }, "'devicechange' event fired when getUserMedia is called with microphone and then with camera"); |
| </script> |
| </head> |
| <body> |
| </body> |
| </html> |
