115 lines
4.2 KiB
JavaScript
115 lines
4.2 KiB
JavaScript
import {coordinates as reverseCoordinates} from '../../../../../src/ol/geom/flat/reverse.js';
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describe('ol.geom.flat.reverse', function() {
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describe('ol.geom.flat.reverse.coordinates', function() {
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describe('with a stride of 2', function() {
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it('can reverse empty flat coordinates', function() {
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const flatCoordinates = [];
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reverseCoordinates(flatCoordinates, 0, flatCoordinates.length, 2);
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expect(flatCoordinates).to.be.empty();
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});
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it('can reverse one flat coordinates', function() {
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const flatCoordinates = [1, 2];
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reverseCoordinates(flatCoordinates, 0, flatCoordinates.length, 2);
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expect(flatCoordinates).to.eql([1, 2]);
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});
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it('can reverse two flat coordinates', function() {
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const flatCoordinates = [1, 2, 3, 4];
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reverseCoordinates(flatCoordinates, 0, flatCoordinates.length, 2);
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expect(flatCoordinates).to.eql([3, 4, 1, 2]);
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});
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it('can reverse three flat coordinates', function() {
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const flatCoordinates = [1, 2, 3, 4, 5, 6];
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reverseCoordinates(flatCoordinates, 0, flatCoordinates.length, 2);
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expect(flatCoordinates).to.eql([5, 6, 3, 4, 1, 2]);
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});
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it('can reverse four flat coordinates', function() {
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const flatCoordinates = [1, 2, 3, 4, 5, 6, 7, 8];
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reverseCoordinates(flatCoordinates, 0, flatCoordinates.length, 2);
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expect(flatCoordinates).to.eql([7, 8, 5, 6, 3, 4, 1, 2]);
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});
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});
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describe('with a stride of 3', function() {
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it('can reverse empty flat coordinates', function() {
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const flatCoordinates = [];
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reverseCoordinates(flatCoordinates, 0, flatCoordinates.length, 3);
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expect(flatCoordinates).to.be.empty();
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});
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it('can reverse one flat coordinates', function() {
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const flatCoordinates = [1, 2, 3];
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reverseCoordinates(flatCoordinates, 0, flatCoordinates.length, 3);
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expect(flatCoordinates).to.eql([1, 2, 3]);
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});
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it('can reverse two flat coordinates', function() {
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const flatCoordinates = [1, 2, 3, 4, 5, 6];
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reverseCoordinates(flatCoordinates, 0, flatCoordinates.length, 3);
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expect(flatCoordinates).to.eql([4, 5, 6, 1, 2, 3]);
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});
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it('can reverse three flat coordinates', function() {
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const flatCoordinates = [1, 2, 3, 4, 5, 6, 7, 8, 9];
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reverseCoordinates(flatCoordinates, 0, flatCoordinates.length, 3);
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expect(flatCoordinates).to.eql([7, 8, 9, 4, 5, 6, 1, 2, 3]);
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});
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it('can reverse four flat coordinates', function() {
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const flatCoordinates = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12];
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reverseCoordinates(flatCoordinates, 0, flatCoordinates.length, 3);
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expect(flatCoordinates).to.eql([10, 11, 12, 7, 8, 9, 4, 5, 6, 1, 2, 3]);
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});
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});
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describe('with a stride of 4', function() {
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it('can reverse empty flat coordinates', function() {
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const flatCoordinates = [];
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reverseCoordinates(flatCoordinates, 0, flatCoordinates.length, 4);
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expect(flatCoordinates).to.be.empty();
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});
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it('can reverse one flat coordinates', function() {
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const flatCoordinates = [1, 2, 3, 4];
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reverseCoordinates(flatCoordinates, 0, flatCoordinates.length, 4);
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expect(flatCoordinates).to.eql([1, 2, 3, 4]);
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});
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it('can reverse two flat coordinates', function() {
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const flatCoordinates = [1, 2, 3, 4, 5, 6, 7, 8];
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reverseCoordinates(flatCoordinates, 0, flatCoordinates.length, 4);
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expect(flatCoordinates).to.eql([5, 6, 7, 8, 1, 2, 3, 4]);
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});
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it('can reverse three flat coordinates', function() {
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const flatCoordinates = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12];
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reverseCoordinates(flatCoordinates, 0, flatCoordinates.length, 4);
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expect(flatCoordinates).to.eql([9, 10, 11, 12, 5, 6, 7, 8, 1, 2, 3, 4]);
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});
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it('can reverse four flat coordinates', function() {
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const flatCoordinates =
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[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16];
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reverseCoordinates(flatCoordinates, 0, flatCoordinates.length, 4);
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expect(flatCoordinates).to.eql(
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[13, 14, 15, 16, 9, 10, 11, 12, 5, 6, 7, 8, 1, 2, 3, 4]);
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});
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});
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});
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});
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