<!DOCTYPE html>
<meta charset="utf-8">
<title>Test console log are present</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script>
promise_test(async () => {
const some_message = "SOME MESSAGE";
// Subscribe to `log.entryAdded` BiDi events. This will not add a listener to the page.
await test_driver.bidi.log.entry_added.subscribe();
// Add a listener for the log.entryAdded event. This will not subscribe to the event, so the subscription is
// required before. The cleanup is done automatically after the test is finished.
const log_entry_promise = test_driver.bidi.log.entry_added.once();
// Emit a console.log message.
// Note: Lint rule is disabled in `lint.ignore` file.
console.log(some_message);
// Wait for the log.entryAdded event to be received.
const event = await log_entry_promise;
// Assert the log.entryAdded event has the expected message.
assert_equals(event.args.length, 1);
const event_message = event.args[0];
assert_equals(event_message.value, some_message);
}, "Assert testdriver can subscribe and receive events");
</script>
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