/*****************************************************************************
 * Open MCT, Copyright (c) 2014-2018, 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/elements/LineHandle'],
    function (LineHandle) {

        describe("A fixed position drag handle", function () {
            var testElement,
                mockElementProxy,
                handle,
                TEST_GRID_SIZE = [45, 21];

            beforeEach(function () {
                testElement = {
                    x: 3,
                    y: 42,
                    x2: 8,
                    y2: 11,
                    useGrid: true
                };
                mockElementProxy = jasmine.createSpyObj('elementProxy', ['getGridSize']);
                mockElementProxy.getGridSize.and.returnValue(TEST_GRID_SIZE);

                handle = new LineHandle(testElement, mockElementProxy, 'x', 'y', 'x2', 'y2');
            });

            it("provides x/y grid coordinates for its corner", function () {
                expect(handle.x()).toEqual(3);
                expect(handle.y()).toEqual(42);
            });

            it("changes x and y positions", function () {
                handle.x(30);
                expect(testElement.x).toEqual(30);
                handle.y(40);
                expect(testElement.y).toEqual(40);
            });

            it("disallows values less than zero", function () {
                handle.x(-1);
                handle.y(-400);
                expect(testElement.x).toEqual(0);
                expect(testElement.y).toEqual(0);
            });

            it("ensures that end points remain different", function () {
                handle.x(testElement.x2);
                handle.y(testElement.y2);
                // First change should have been fine, because y was different
                expect(testElement.x).toEqual(testElement.x2);
                // Second change should have been rejected
                expect(testElement.y).not.toEqual(testElement.y2);
            });

            it("returns the correct grid size", function () {
                expect(handle.getGridSize()).toEqual(TEST_GRID_SIZE);
            });

        });
    }
);