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/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/ */
var { utils: Cu, interfaces: Ci, classes: Cc } = Components;
Cu.import("resource://gre/modules/Services.jsm", this);
function promiseContentResponse(browser, name, message) {
let mm = browser.messageManager;
let promise = new Promise(resolve => {
function removeListener() {
mm.removeMessageListener(name, listener);
}
function listener(msg) {
removeListener();
resolve(msg.data);
}
mm.addMessageListener(name, listener);
registerCleanupFunction(removeListener);
});
mm.sendAsyncMessage(name, message);
return promise;
}
function promiseContentResponseOrNull(browser, name, message) {
if (!browser.messageManager) {
return null;
}
return promiseContentResponse(browser, name, message);
}
/**
* `true` if we are running an OS in which the OS performance
* clock has a low precision and might unpredictably
* never be updated during the execution of the test.
*/
function hasLowPrecision() {
let [sysName, sysVersion] = [Services.sysinfo.getPropertyAsAString("name"), Services.sysinfo.getPropertyAsDouble("version")];
info(`Running ${sysName} version ${sysVersion}`);
if (sysName == "Windows_NT" && sysVersion < 6) {
info("Running old Windows, need to deactivate tests due to bad precision.");
return true;
}
if (sysName == "Linux" && sysVersion <= 2.6) {
info("Running old Linux, need to deactivate tests due to bad precision.");
return true;
}
info("This platform has good precision.")
return false;
}
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