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"use strict";
/**
* Helpers for use in tests that want to verify that localized error messages
* are logged during the test. Because most of our errors (ex:
* ServiceWorkerManager) generate nsIScriptError instances with flattened
* strings (the interpolated arguments aren't kept around), we load the string
* bundle and use it to derive the exact string message we expect for the given
* payload.
**/
let stringBundleService = SpecialPowers.Cc[
"@mozilla.org/intl/stringbundle;1"
].getService(SpecialPowers.Ci.nsIStringBundleService);
let localizer = stringBundleService.createBundle(
"chrome://global/locale/dom/dom.properties"
);
/**
* Start monitoring the console for the given localized error message string(s)
* with the given arguments to be logged. Call before running code that will
* generate the console message. Pair with a call to
* `wait_for_expected_message` invoked after the message should have been
* generated.
*
* Multiple error messages can be expected, just repeat the msgId and args
* argument pair as needed.
*
* @param {String} msgId
* The localization message identifier used in the properties file.
* @param {String[]} args
* The list of formatting arguments we expect the error to be generated with.
* @return {Object} Promise/handle to pass to wait_for_expected_message.
*/
function expect_console_message(/* msgId, args, ... */) {
let expectations = [];
// process repeated paired arguments of: msgId, args
for (let i = 0; i < arguments.length; i += 2) {
let msgId = arguments[i];
let args = arguments[i + 1];
if (args.length === 0) {
expectations.push({ errorMessage: localizer.GetStringFromName(msgId) });
} else {
expectations.push({
errorMessage: localizer.formatStringFromName(msgId, args),
});
}
}
return new Promise(resolve => {
SimpleTest.monitorConsole(resolve, expectations);
});
}
let expect_console_messages = expect_console_message;
/**
* Stop monitoring the console, returning a Promise that will be resolved when
* the sentinel console message sent through the async data path has been
* received. The Promise will not reject on failure; instead a mochitest
* failure will have been generated by ok(false)/equivalent by the time it is
* resolved.
*/
function wait_for_expected_message(expectedPromise) {
SimpleTest.endMonitorConsole();
return expectedPromise;
}
/**
* Derive an absolute URL string from a relative URL to simplify error message
* argument generation.
*/
function make_absolute_url(relUrl) {
return new URL(relUrl, window.location).href;
}
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