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