55 lines
2.2 KiB
JavaScript
55 lines
2.2 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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assertDeviceInfoEquals(
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usbInterface, fakeDeviceInit.configurations[1].interfaces[0]);
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}, 'Can construct a USBInterface.');
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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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try {
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let usbInterface = new USBInterface(
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configuration, configuration.interfaces.length);
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assert_unreached('USBInterface should reject an invalid interface number');
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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 USBInterface with an invalid interface number ' +
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'throws a range error.');
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usb_test(async () => {
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let { device } = await getFakeDevice();
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await device.open();
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await device.selectConfiguration(2);
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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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assert_equals(usbInterface.alternate.alternateSetting, 0);
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}, 'The alternate attribute of USBInterface returns the one with ' +
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'bAlternateSetting 0 if the interface has not been claimed.');
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usb_test(async () => {
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let { device } = await getFakeDevice();
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await device.open();
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await device.selectConfiguration(2);
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await device.claimInterface(0);
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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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assert_equals(usbInterface.alternate.alternateSetting, 0);
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await device.selectAlternateInterface(0, 1);
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assert_equals(usbInterface.alternate.alternateSetting, 1);
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}, 'The alternate attribute of USBInterface returns the active alternate ' +
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'interface.');
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