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/*****************************************************************************
* Open MCT, Copyright (c) 2014-2021, United States Government
* as represented by the Administrator of the National Aeronautics and Space
* Administration. All rights reserved.
*
* Open MCT is licensed under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
* Open MCT includes source code licensed under additional open source
* licenses. See the Open Source Licenses file (LICENSES.md) included with
* this source code distribution or the Licensing information page available
* at runtime from the About dialog for additional information.
*****************************************************************************/
define(
['../../src/directives/MCTScroll'],
function (MCTScroll) {
var EVENT_PROPERTY = "testProperty",
ATTRIBUTE = "testAttribute",
EXPRESSION = "some.expression";
// MCTScroll is the commonality between mct-scroll-x and
// mct-scroll-y; it gets the event property to watch and
// the attribute which contains the associated assignable
// expression.
describe("An mct-scroll-* directive", function () {
var mockParse,
mockParsed,
mockScope,
mockElement,
testAttrs,
mctScroll;
beforeEach(function () {
mockParse = jasmine.createSpy('$parse');
mockParsed = jasmine.createSpy('parsed');
mockParsed.assign = jasmine.createSpy('assign');
mockScope = jasmine.createSpyObj('$scope', ['$watch', '$apply']);
mockElement = [{ testProperty: 42 }];
mockElement.on = jasmine.createSpy('on');
mockParse.and.returnValue(mockParsed);
testAttrs = {};
testAttrs[ATTRIBUTE] = EXPRESSION;
mctScroll = new MCTScroll(
mockParse,
EVENT_PROPERTY,
ATTRIBUTE
);
mctScroll.link(mockScope, mockElement, testAttrs);
});
it("is available for attributes", function () {
expect(mctScroll.restrict).toEqual('A');
});
it("does not create an isolate scope", function () {
expect(mctScroll.scope).toBeUndefined();
});
it("watches for changes in observed expression", function () {
expect(mockScope.$watch).toHaveBeenCalledWith(
EXPRESSION,
jasmine.any(Function)
);
// Should have been only watch (other tests need this to be true)
expect(mockScope.$watch.calls.count()).toEqual(1);
});
it("listens for scroll events", function () {
expect(mockElement.on).toHaveBeenCalledWith(
'scroll',
jasmine.any(Function)
);
// Should have been only listener (other tests need this to be true)
expect(mockElement.on.calls.count()).toEqual(1);
});
it("publishes initial scroll state", function () {
expect(mockParse).toHaveBeenCalledWith(EXPRESSION);
expect(mockParsed.assign).toHaveBeenCalledWith(mockScope, 42);
});
it("updates scroll state when scope changes", function () {
mockScope.$watch.calls.mostRecent().args[1](64);
expect(mockElement[0].testProperty).toEqual(64);
});
it("updates scope when scroll state changes", function () {
mockElement[0].testProperty = 12321;
mockElement.on.calls.mostRecent().args[1]({ target: mockElement[0] });
expect(mockParsed.assign).toHaveBeenCalledWith(mockScope, 12321);
expect(mockScope.$apply).toHaveBeenCalledWith(EXPRESSION);
});
// This would trigger an infinite digest exception
it("does not call $apply during construction", function () {
expect(mockScope.$apply).not.toHaveBeenCalled();
});
});
}
);
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