// Test that opening a port whose device has been disconnected fails.
// This exercises the parent-side enumeration check in OpenRunnable that
// validates the portId against the currently-enumerated device list.
add_task(async function testOpenAfterDeviceRemoved() {
await navigator.serial.removeAllMockDevices();
await simulateDeviceConnection( "security-test-device", "/dev/ttySEC0", 0x2345, 0xBCDE
);
SpecialPowers.wrap(document).notifyUserGestureActivation();
const port = await navigator.serial.requestPort({ filters: [] });
ok(port, "Should get a port");
const info = port.getInfo();
is(info.usbVendorId, 0x2345, "expected usbVendorId from port");
is(info.usbProductId, 0xBCDE, "expected usbProductId from port");
// Disconnect the device while we still hold the port reference.
await navigator.serial.simulateDeviceDisconnection("security-test-device");
// Opening should fail because the device is no longer enumerated.
await Assert.rejects(
port.open({ baudRate: 9600 }),
/NetworkError/, "Opening a disconnected device should throw NetworkError"
);
// Test that re-adding a device after disconnect allows reopening.
add_task(async function testReconnectAfterDisconnect() {
await navigator.serial.removeAllMockDevices();
await simulateDeviceConnection( "reconnect-device", "/dev/ttyRCN", 0x1111, 0x2222
);
SpecialPowers.wrap(document).notifyUserGestureActivation();
const port = await navigator.serial.requestPort({ filters: [] });
// Disconnect and try to open - should fail.
await navigator.serial.simulateDeviceDisconnection("reconnect-device");
await Assert.rejects(
port.open({ baudRate: 9600 }),
/NetworkError/, "Should get NetworkError after disconnect"
);
// Re-add the same device and request a new port - should work.
await simulateDeviceConnection( "reconnect-device", "/dev/ttyRCN", 0x1111, 0x2222
);
SpecialPowers.wrap(document).notifyUserGestureActivation();
const port2 = await navigator.serial.requestPort({ filters: [] });
await port2.open({ baudRate: 9600 });
ok(true, "Should be able to open after device reconnects");
await port2.close();
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