34 lines
1.4 KiB
JavaScript
34 lines
1.4 KiB
JavaScript
// META: script=/resources/test-only-api.js
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// META: script=/webusb/resources/fake-devices.js
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// META: script=/webusb/resources/usb-helpers.js
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'use strict';
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usb_test(async () => {
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let { device } = await getFakeDevice();
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let configuration = new USBConfiguration(
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device, device.configurations[1].configurationValue);
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let usbInterface = new USBInterface(
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configuration, configuration.interfaces[0].interfaceNumber);
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let alternateInterface = new USBAlternateInterface(
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usbInterface, usbInterface.alternates[1].alternateSetting);
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assertDeviceInfoEquals(
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alternateInterface,
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fakeDeviceInit.configurations[1].interfaces[0].alternates[1]);
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}, 'Can construct a USBAlternateInterface.');
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usb_test(async () => {
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let { device } = await getFakeDevice();
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let configuration = new USBConfiguration(
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device, device.configurations[1].configurationValue);
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let usbInterface = new USBInterface(
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configuration, configuration.interfaces[0].interfaceNumber);
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try {
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let alternateInterface = new USBAlternateInterface(
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usbInterface, usbInterface.alternates.length);
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assert_unreached(
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'USBAlternateInterface should reject an invalid alternate setting');
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} catch (error) {
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assert_equals(error.name, 'RangeError');
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}
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}, 'Constructing a USBAlternateInterface with an invalid alternate setting ' +
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'throws a range error.');
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