107 lines
4.3 KiB
JavaScript
107 lines
4.3 KiB
JavaScript
import expect from '../../../expect.js';
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import {coordinates as reverseCoordinates} from '../../../../../src/ol/geom/flat/reverse.js';
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describe('ol/geom/flat/reverse.js', function () {
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describe('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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];
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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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});
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