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62 lines
3.5 KiB
JavaScript
62 lines
3.5 KiB
JavaScript
const {_boundSegment} = Chart.helpers;
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describe('helpers.segments', function() {
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describe('_boundSegment', function() {
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const points = [{x: 10, y: 1}, {x: 20, y: 2}, {x: 30, y: 3}];
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const segment = {start: 0, end: 2, loop: false};
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it('should not find segment from before the line', function() {
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expect(_boundSegment(segment, points, {property: 'x', start: 5, end: 9.99999})).toEqual([]);
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});
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it('should not find segment from after the line', function() {
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expect(_boundSegment(segment, points, {property: 'x', start: 30.00001, end: 800})).toEqual([]);
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});
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it('should find segment when starting before line', function() {
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expect(_boundSegment(segment, points, {property: 'x', start: 5, end: 15})).toEqual([{start: 0, end: 1, loop: false, style: undefined}]);
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});
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it('should find segment directly on point', function() {
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expect(_boundSegment(segment, points, {property: 'x', start: 10, end: 10})).toEqual([{start: 0, end: 0, loop: false, style: undefined}]);
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});
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it('should find segment from range between points', function() {
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expect(_boundSegment(segment, points, {property: 'x', start: 11, end: 14})).toEqual([{start: 0, end: 1, loop: false, style: undefined}]);
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});
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it('should find segment from point between points', function() {
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expect(_boundSegment(segment, points, {property: 'x', start: 22, end: 22})).toEqual([{start: 1, end: 2, loop: false, style: undefined}]);
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});
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it('should find whole segment', function() {
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expect(_boundSegment(segment, points, {property: 'x', start: 0, end: 50})).toEqual([{start: 0, end: 2, loop: false, style: undefined}]);
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});
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it('should find correct segment from near points', function() {
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expect(_boundSegment(segment, points, {property: 'x', start: 10.001, end: 29.999})).toEqual([{start: 0, end: 2, loop: false, style: undefined}]);
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});
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it('should find segment from after the line', function() {
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expect(_boundSegment(segment, points, {property: 'x', start: 25, end: 35})).toEqual([{start: 1, end: 2, loop: false, style: undefined}]);
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});
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it('should find multiple segments', function() {
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const points2 = [{x: 0, y: 100}, {x: 1, y: 50}, {x: 2, y: 70}, {x: 4, y: 80}, {x: 5, y: -100}];
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expect(_boundSegment({start: 0, end: 4, loop: false}, points2, {property: 'y', start: 60, end: 60})).toEqual([
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{start: 0, end: 1, loop: false, style: undefined},
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{start: 1, end: 2, loop: false, style: undefined},
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{start: 3, end: 4, loop: false, style: undefined},
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]);
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});
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it('should find correct segments when there are multiple points with same property value', function() {
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const repeatedPoints = [{x: 1, y: 5}, {x: 1, y: 6}, {x: 2, y: 5}, {x: 2, y: 6}, {x: 3, y: 5}, {x: 3, y: 6}, {x: 3, y: 7}];
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expect(_boundSegment({start: 0, end: 6, loop: false}, repeatedPoints, {property: 'x', start: 1, end: 1.1})).toEqual([{start: 0, end: 2, loop: false, style: undefined}]);
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expect(_boundSegment({start: 0, end: 6, loop: false}, repeatedPoints, {property: 'x', start: 2, end: 2.1})).toEqual([{start: 2, end: 4, loop: false, style: undefined}]);
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expect(_boundSegment({start: 0, end: 6, loop: false}, repeatedPoints, {property: 'x', start: 2, end: 3.1})).toEqual([{start: 2, end: 6, loop: false, style: undefined}]);
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expect(_boundSegment({start: 0, end: 6, loop: false}, repeatedPoints, {property: 'x', start: 0, end: 8})).toEqual([{start: 0, end: 6, loop: false, style: undefined}]);
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});
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});
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});
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