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Test Info: Warnings
- This test has a WPT meta file that expects 2 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /webusb/usbAlternateInterface.https.any.html - WPT Dashboard Interop Dashboard
- /webusb/usbAlternateInterface.https.any.worker.html - WPT Dashboard Interop Dashboard
// META: script=/resources/test-only-api.js
// META: script=/webusb/resources/fake-devices.js
// META: script=/webusb/resources/usb-helpers.js
'use strict';
usb_test(async () => {
let { device } = await getFakeDevice();
let configuration = new USBConfiguration(
device, device.configurations[1].configurationValue);
let usbInterface = new USBInterface(
configuration, configuration.interfaces[0].interfaceNumber);
let alternateInterface = new USBAlternateInterface(
usbInterface, usbInterface.alternates[1].alternateSetting);
assertDeviceInfoEquals(
alternateInterface,
fakeDeviceInit.configurations[1].interfaces[0].alternates[1]);
}, 'Can construct a USBAlternateInterface.');
usb_test(async () => {
let { device } = await getFakeDevice();
let configuration = new USBConfiguration(
device, device.configurations[1].configurationValue);
let usbInterface = new USBInterface(
configuration, configuration.interfaces[0].interfaceNumber);
try {
let alternateInterface = new USBAlternateInterface(
usbInterface, usbInterface.alternates.length);
assert_unreached(
'USBAlternateInterface should reject an invalid alternate setting');
} catch (error) {
assert_equals(error.name, 'RangeError');
}
}, 'Constructing a USBAlternateInterface with an invalid alternate setting ' +
'throws a range error.');