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/* Any copyright is dedicated to the Public Domain.
/* global SerialPort */
"use strict";
function test(condition, message) {
self.postMessage({
type: "test",
result: condition,
message,
});
}
async function runTests() {
try {
// Step 1: Get ports - should see the port granted in the window.
const ports = await navigator.serial.getPorts();
test(ports.length === 1, "Worker should see 1 granted port initially");
const port = ports[0];
test(port instanceof SerialPort, "Port should be a SerialPort instance");
const forgottenPromise = new Promise(resolve => {
self.onmessage = e => {
if (e.data === "forgotten") {
resolve();
}
};
});
// Tell the main thread we have the port and it can forget it.
self.postMessage({ type: "ready" });
// Wait for the main thread to tell us it has forgotten the port.
await forgottenPromise;
// Step 2: Call getPorts() again after the main thread forgot the port.
const portsAfter = await navigator.serial.getPorts();
test(
portsAfter.length === 0,
"Worker getPorts() should return 0 ports after main thread forget"
);
self.postMessage({ type: "done" });
} catch (e) {
self.postMessage({
type: "error",
message: `Test failed: ${e.name}: ${e.message}\n${e.stack}`,
});
}
}
runTests();