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58 lines
1.7 KiB
JavaScript
58 lines
1.7 KiB
JavaScript
import { BoundingSphere } from "../../Source/Cesium.js";
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import { Cartesian3 } from "../../Source/Cesium.js";
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import { mergeSort } from "../../Source/Cesium.js";
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describe("Core/mergeSort", function () {
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it("sorts", function () {
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var array = [0, 9, 1, 8, 2, 7, 3, 6, 4, 5];
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mergeSort(array, function (a, b) {
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return a - b;
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});
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var expected = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
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expect(array).toEqual(expected);
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});
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it("stable sorts", function () {
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var array = [{ value: 5 }, { value: 10 }, { value: 5 }, { value: 0 }];
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var expected = [array[3], array[0], array[2], array[1]];
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mergeSort(array, function (a, b) {
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return a.value - b.value;
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});
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expect(array).toEqual(expected);
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});
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it("sorts with user defined object", function () {
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var array = [
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new BoundingSphere(new Cartesian3(-2.0, 0.0, 0.0), 1.0),
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new BoundingSphere(new Cartesian3(-1.0, 0.0, 0.0), 1.0),
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new BoundingSphere(new Cartesian3(-3.0, 0.0, 0.0), 1.0),
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];
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var position = Cartesian3.ZERO;
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var comparator = function (a, b, position) {
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return (
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BoundingSphere.distanceSquaredTo(b, position) -
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BoundingSphere.distanceSquaredTo(a, position)
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);
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};
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var expected = [array[2], array[0], array[1]];
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mergeSort(array, comparator, position);
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expect(array).toEqual(expected);
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});
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function dummy() {
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return true;
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}
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it("throws an exception if array is missing", function () {
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expect(function () {
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mergeSort(undefined, dummy);
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}).toThrowDeveloperError();
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});
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it("throws an exception if comparator is missing", function () {
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expect(function () {
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mergeSort([0, 1, 2], undefined);
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}).toThrowDeveloperError();
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});
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});
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