openmct/platform/features/layout/test/elements/LineHandleSpec.js

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 * Open MCT, Copyright (c) 2014-2016, 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
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 * License for the specific language governing permissions and limitations
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define(
    ['../../src/elements/LineHandle'],
    function (LineHandle) {

        describe("A fixed position drag handle", function () {
            var testElement,
                handle;

            beforeEach(function () {
                testElement = {
                    x: 3,
                    y: 42,
                    x2: 8,
                    y2: 11
                };

                handle = new LineHandle(testElement, '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);
            });


        });
    }
);