async-test.js

/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory() :
    typeof define === 'function' && define.amd ? define(factory) :
    (factory());
}(this, (function () { 'use strict';

/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
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.
            this.runZone.run(function () {
                setTimeout(function () {
                    if (!_this._alreadyErrored && !(_this._pendingMicroTasks || _this._pendingMacroTasks)) {
                        _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);
            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;

})));