Bones/node_modules/zone.js/dist/async-test.js
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2017-05-17 13:45:25 -04:00

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JavaScript

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/******/ ([
/* 0 */
/***/ function(module, exports) {
(function () {
var AsyncTestZoneSpec = (function () {
function AsyncTestZoneSpec(finishCallback, failCallback, namePrefix) {
this._pendingMicroTasks = false;
this._pendingMacroTasks = false;
this._alreadyErrored = false;
this.runZone = Zone.current;
this._finishCallback = finishCallback;
this._failCallback = failCallback;
this.name = 'asyncTestZone for ' + namePrefix;
}
AsyncTestZoneSpec.prototype._finishCallbackIfDone = function () {
var _this = this;
if (!(this._pendingMicroTasks || this._pendingMacroTasks)) {
// We do this because we would like to catch unhandled rejected promises.
// To do this quickly when there are native promises, we must run using an unwrapped
// promise implementation.
var symbol = Zone.__symbol__;
var NativePromise = window[symbol('Promise')];
if (NativePromise) {
NativePromise.resolve(true)[symbol('then')](function () {
if (!_this._alreadyErrored) {
_this.runZone.run(_this._finishCallback);
}
});
}
else {
// For implementations which do not have nativePromise, use setTimeout(0). This is slower,
// but it also works because Zones will handle errors when rejected promises have no
// listeners after one macrotask.
this.runZone.run(function () {
setTimeout(function () {
if (!_this._alreadyErrored) {
_this._finishCallback();
}
}, 0);
});
}
}
};
// Note - we need to use onInvoke at the moment to call finish when a test is
// fully synchronous. TODO(juliemr): remove this when the logic for
// onHasTask changes and it calls whenever the task queues are dirty.
AsyncTestZoneSpec.prototype.onInvoke = function (parentZoneDelegate, currentZone, targetZone, delegate, applyThis, applyArgs, source) {
try {
return parentZoneDelegate.invoke(targetZone, delegate, applyThis, applyArgs, source);
}
finally {
this._finishCallbackIfDone();
}
};
AsyncTestZoneSpec.prototype.onHandleError = function (parentZoneDelegate, currentZone, targetZone, error) {
// Let the parent try to handle the error.
var result = parentZoneDelegate.handleError(targetZone, error);
if (result) {
this._failCallback(error.message ? error.message : 'unknown error');
this._alreadyErrored = true;
}
return false;
};
AsyncTestZoneSpec.prototype.onScheduleTask = function (delegate, currentZone, targetZone, task) {
if (task.type == 'macroTask' && task.source == 'setInterval') {
this._failCallback('Cannot use setInterval from within an async zone test.');
return;
}
return delegate.scheduleTask(targetZone, task);
};
AsyncTestZoneSpec.prototype.onHasTask = function (delegate, current, target, hasTaskState) {
delegate.hasTask(target, hasTaskState);
if (hasTaskState.change == 'microTask') {
this._pendingMicroTasks = hasTaskState.microTask;
this._finishCallbackIfDone();
}
else if (hasTaskState.change == 'macroTask') {
this._pendingMacroTasks = hasTaskState.macroTask;
this._finishCallbackIfDone();
}
};
return AsyncTestZoneSpec;
}());
// Export the class so that new instances can be created with proper
// constructor params.
Zone['AsyncTestZoneSpec'] = AsyncTestZoneSpec;
})();
/***/ }
/******/ ]);