494 lines
13 KiB
JavaScript
494 lines
13 KiB
JavaScript
// Test the line controller
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describe('Line controller tests', function() {
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beforeEach(function() {
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window.addDefaultMatchers(jasmine);
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});
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afterEach(function() {
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window.releaseAllCharts();
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});
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it('should be constructed', function() {
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var chart = window.acquireChart({
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type: 'line',
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data: {
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datasets: [{
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data: []
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}],
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labels: []
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}
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});
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var meta = chart.getDatasetMeta(0);
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expect(meta.type).toBe('line');
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expect(meta.controller).not.toBe(undefined);
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expect(meta.controller.index).toBe(0);
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expect(meta.data).toEqual([]);
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meta.controller.updateIndex(1);
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expect(meta.controller.index).toBe(1);
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});
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it('Should use the first scale IDs if the dataset does not specify them', function() {
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var chart = window.acquireChart({
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type: 'line',
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data: {
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datasets: [{
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data: []
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}],
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labels: []
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},
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options: {
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scales: {
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xAxes: [{
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id: 'firstXScaleID'
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}],
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yAxes: [{
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id: 'firstYScaleID'
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}]
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}
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}
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});
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var meta = chart.getDatasetMeta(0);
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expect(meta.xAxisID).toBe('firstXScaleID');
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expect(meta.yAxisID).toBe('firstYScaleID');
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});
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it('Should create line elements and point elements for each data item during initialization', function() {
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var chart = window.acquireChart({
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type: 'line',
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data: {
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datasets: [{
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data: [10, 15, 0, -4],
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label: 'dataset1'
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}],
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labels: ['label1', 'label2', 'label3', 'label4']
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}
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});
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var meta = chart.getDatasetMeta(0);
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expect(meta.data.length).toBe(4); // 4 points created
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expect(meta.data[0] instanceof Chart.elements.Point).toBe(true);
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expect(meta.data[1] instanceof Chart.elements.Point).toBe(true);
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expect(meta.data[2] instanceof Chart.elements.Point).toBe(true);
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expect(meta.data[3] instanceof Chart.elements.Point).toBe(true);
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expect(meta.dataset instanceof Chart.elements.Line).toBe(true); // 1 line element
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});
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it('should draw all elements', function() {
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var chart = window.acquireChart({
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type: 'line',
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data: {
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datasets: [{
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data: [10, 15, 0, -4],
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label: 'dataset1'
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}],
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labels: ['label1', 'label2', 'label3', 'label4']
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},
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options: {
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showLines: true
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}
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});
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var meta = chart.getDatasetMeta(0);
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spyOn(meta.dataset, 'draw');
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spyOn(meta.data[0], 'draw');
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spyOn(meta.data[1], 'draw');
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spyOn(meta.data[2], 'draw');
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spyOn(meta.data[3], 'draw');
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chart.update();
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expect(meta.data[0].draw.calls.count()).toBe(1);
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expect(meta.data[1].draw.calls.count()).toBe(1);
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expect(meta.data[2].draw.calls.count()).toBe(1);
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expect(meta.data[3].draw.calls.count()).toBe(1);
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});
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it('should draw all elements except lines', function() {
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var chart = window.acquireChart({
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type: 'line',
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data: {
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datasets: [{
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data: [10, 15, 0, -4],
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label: 'dataset1'
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}],
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labels: ['label1', 'label2', 'label3', 'label4']
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},
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options: {
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showLines: false
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}
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});
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var meta = chart.getDatasetMeta(0);
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spyOn(meta.dataset, 'draw');
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spyOn(meta.data[0], 'draw');
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spyOn(meta.data[1], 'draw');
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spyOn(meta.data[2], 'draw');
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spyOn(meta.data[3], 'draw');
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chart.update();
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expect(meta.dataset.draw.calls.count()).toBe(0);
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expect(meta.data[0].draw.calls.count()).toBe(1);
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expect(meta.data[1].draw.calls.count()).toBe(1);
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expect(meta.data[2].draw.calls.count()).toBe(1);
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expect(meta.data[3].draw.calls.count()).toBe(1);
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});
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it('should update elements when modifying data', function() {
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var chart = window.acquireChart({
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type: 'line',
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data: {
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datasets: [{
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data: [10, 15, 0, -4],
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label: 'dataset',
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xAxisID: 'firstXScaleID',
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yAxisID: 'firstYScaleID'
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}],
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labels: ['label1', 'label2', 'label3', 'label4']
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},
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options: {
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showLines: true,
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elements: {
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point: {
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backgroundColor: 'red',
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borderColor: 'blue',
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}
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},
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scales: {
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xAxes: [{
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id: 'firstXScaleID'
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}],
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yAxes: [{
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id: 'firstYScaleID'
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}]
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}
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},
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});
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var meta = chart.getDatasetMeta(0);
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expect(meta.data.length).toBe(4);
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chart.data.datasets[0].data = [1, 2]; // remove 2 items
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chart.data.datasets[0].borderWidth = 1;
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chart.update();
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expect(meta.data.length).toBe(2);
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[ { x: 44, y: 484 },
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{ x: 193, y: 32 }
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].forEach(function(expected, i) {
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expect(meta.data[i]._datasetIndex).toBe(0);
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expect(meta.data[i]._index).toBe(i);
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expect(meta.data[i]._xScale).toBe(chart.scales.firstXScaleID);
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expect(meta.data[i]._yScale).toBe(chart.scales.firstYScaleID);
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expect(meta.data[i]._model.x).toBeCloseToPixel(expected.x);
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expect(meta.data[i]._model.y).toBeCloseToPixel(expected.y);
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expect(meta.data[i]._model).toEqual(jasmine.objectContaining({
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backgroundColor: 'red',
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borderColor: 'blue',
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}));
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});
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chart.data.datasets[0].data = [1, 2, 3]; // add 1 items
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chart.update();
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expect(meta.data.length).toBe(3); // should add a new meta data item
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});
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it('should update elements when the y scale is stacked', function() {
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var chart = window.acquireChart({
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type: 'line',
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data: {
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datasets: [{
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data: [10, -10, 10, -10],
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label: 'dataset1'
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}, {
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data: [10, 15, 0, -4],
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label: 'dataset2'
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}],
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labels: ['label1', 'label2', 'label3', 'label4']
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},
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options: {
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scales: {
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yAxes: [{
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stacked: true
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}]
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}
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}
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});
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var meta0 = chart.getDatasetMeta(0);
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[ { x: 38, y: 161 },
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{ x: 189, y: 419 },
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{ x: 341, y: 161 },
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{ x: 492, y: 419 }
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].forEach(function(values, i) {
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expect(meta0.data[i]._model.x).toBeCloseToPixel(values.x);
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expect(meta0.data[i]._model.y).toBeCloseToPixel(values.y);
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});
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var meta1 = chart.getDatasetMeta(1);
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[ { x: 38, y: 32 },
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{ x: 189, y: 97 },
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{ x: 341, y: 161 },
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{ x: 492, y: 471 }
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].forEach(function(values, i) {
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expect(meta1.data[i]._model.x).toBeCloseToPixel(values.x);
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expect(meta1.data[i]._model.y).toBeCloseToPixel(values.y);
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});
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});
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it('should find the correct scale zero when the data is all positive', function() {
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var chart = window.acquireChart({
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type: 'line',
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data: {
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datasets: [{
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data: [10, 15, 20, 20],
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label: 'dataset1',
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}],
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labels: ['label1', 'label2', 'label3', 'label4']
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},
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});
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var meta = chart.getDatasetMeta(0);
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expect(meta.dataset._model).toEqual(jasmine.objectContaining({
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scaleTop: 32,
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scaleBottom: 484,
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scaleZero: 484,
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}));
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});
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it('should find the correct scale zero when the data is all negative', function() {
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var chart = window.acquireChart({
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type: 'line',
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data: {
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datasets: [{
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data: [-10, -15, -20, -20],
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label: 'dataset1',
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}],
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labels: ['label1', 'label2', 'label3', 'label4']
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},
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});
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var meta = chart.getDatasetMeta(0);
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expect(meta.dataset._model).toEqual(jasmine.objectContaining({
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scaleTop: 32,
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scaleBottom: 484,
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scaleZero: 32,
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}));
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});
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it('should fall back to the line styles for points', function() {
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var chart = window.acquireChart({
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type: 'line',
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data: {
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datasets: [{
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data: [0, 0],
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label: 'dataset1',
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// line styles
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backgroundColor: 'rgb(98, 98, 98)',
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borderColor: 'rgb(8, 8, 8)',
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borderWidth: 0.55,
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}],
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labels: ['label1', 'label2']
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}
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});
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var meta = chart.getDatasetMeta(0);
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expect(meta.dataset._model.backgroundColor).toBe('rgb(98, 98, 98)');
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expect(meta.dataset._model.borderColor).toBe('rgb(8, 8, 8)');
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expect(meta.dataset._model.borderWidth).toBe(0.55);
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});
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it('should handle number of data point changes in update', function() {
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var chart = window.acquireChart({
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type: 'line',
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data: {
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datasets: [{
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data: [10, 15, 0, -4],
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label: 'dataset1',
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}],
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labels: ['label1', 'label2', 'label3', 'label4']
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}
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});
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var meta = chart.getDatasetMeta(0);
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chart.data.datasets[0].data = [1, 2]; // remove 2 items
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chart.update();
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expect(meta.data.length).toBe(2);
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expect(meta.data[0] instanceof Chart.elements.Point).toBe(true);
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expect(meta.data[1] instanceof Chart.elements.Point).toBe(true);
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chart.data.datasets[0].data = [1, 2, 3, 4, 5]; // add 3 items
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chart.update();
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expect(meta.data.length).toBe(5);
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expect(meta.data[0] instanceof Chart.elements.Point).toBe(true);
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expect(meta.data[1] instanceof Chart.elements.Point).toBe(true);
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expect(meta.data[2] instanceof Chart.elements.Point).toBe(true);
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expect(meta.data[3] instanceof Chart.elements.Point).toBe(true);
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expect(meta.data[4] instanceof Chart.elements.Point).toBe(true);
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});
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it('should set point hover styles', function() {
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var chart = window.acquireChart({
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type: 'line',
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data: {
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datasets: [{
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data: [10, 15, 0, -4],
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label: 'dataset1',
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}],
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labels: ['label1', 'label2', 'label3', 'label4']
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},
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options: {
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elements: {
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point: {
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backgroundColor: 'rgb(255, 255, 0)',
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borderWidth: 1,
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borderColor: 'rgb(255, 255, 255)',
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hitRadius: 1,
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hoverRadius: 4,
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hoverBorderWidth: 1,
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radius: 3,
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}
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}
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}
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});
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var meta = chart.getDatasetMeta(0);
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var point = meta.data[0];
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meta.controller.setHoverStyle(point);
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expect(point._model.backgroundColor).toBe('rgb(229, 230, 0)');
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expect(point._model.borderColor).toBe('rgb(230, 230, 230)');
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expect(point._model.borderWidth).toBe(1);
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expect(point._model.radius).toBe(4);
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// Can set hover style per dataset
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chart.data.datasets[0].pointHoverRadius = 3.3;
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chart.data.datasets[0].pointHoverBackgroundColor = 'rgb(77, 79, 81)';
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chart.data.datasets[0].pointHoverBorderColor = 'rgb(123, 125, 127)';
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chart.data.datasets[0].pointHoverBorderWidth = 2.1;
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meta.controller.setHoverStyle(point);
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expect(point._model.backgroundColor).toBe('rgb(77, 79, 81)');
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expect(point._model.borderColor).toBe('rgb(123, 125, 127)');
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expect(point._model.borderWidth).toBe(2.1);
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expect(point._model.radius).toBe(3.3);
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// Use the consistent name "pointRadius", setting but overwriting
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// another value in "radius"
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chart.data.datasets[0].pointRadius = 250;
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chart.data.datasets[0].radius = 20;
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meta.controller.setHoverStyle(point);
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expect(point._model.backgroundColor).toBe('rgb(77, 79, 81)');
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expect(point._model.borderColor).toBe('rgb(123, 125, 127)');
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expect(point._model.borderWidth).toBe(2.1);
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expect(point._model.radius).toBe(3.3);
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// Custom style
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point.custom = {
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hoverRadius: 4.4,
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hoverBorderWidth: 5.5,
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hoverBackgroundColor: 'rgb(0, 0, 0)',
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hoverBorderColor: 'rgb(10, 10, 10)'
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};
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meta.controller.setHoverStyle(point);
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expect(point._model.backgroundColor).toBe('rgb(0, 0, 0)');
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expect(point._model.borderColor).toBe('rgb(10, 10, 10)');
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expect(point._model.borderWidth).toBe(5.5);
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expect(point._model.radius).toBe(4.4);
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});
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it('should remove hover styles', function() {
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var chart = window.acquireChart({
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type: 'line',
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data: {
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datasets: [{
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data: [10, 15, 0, -4],
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label: 'dataset1',
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}],
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labels: ['label1', 'label2', 'label3', 'label4']
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},
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options: {
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elements: {
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point: {
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backgroundColor: 'rgb(255, 255, 0)',
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borderWidth: 1,
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borderColor: 'rgb(255, 255, 255)',
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hitRadius: 1,
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hoverRadius: 4,
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hoverBorderWidth: 1,
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radius: 3,
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}
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}
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}
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});
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var meta = chart.getDatasetMeta(0);
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var point = meta.data[0];
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chart.options.elements.point.backgroundColor = 'rgb(45, 46, 47)';
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chart.options.elements.point.borderColor = 'rgb(50, 51, 52)';
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chart.options.elements.point.borderWidth = 10.1;
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chart.options.elements.point.radius = 1.01;
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meta.controller.removeHoverStyle(point);
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expect(point._model.backgroundColor).toBe('rgb(45, 46, 47)');
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expect(point._model.borderColor).toBe('rgb(50, 51, 52)');
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expect(point._model.borderWidth).toBe(10.1);
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expect(point._model.radius).toBe(1.01);
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// Can set hover style per dataset
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chart.data.datasets[0].radius = 3.3;
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chart.data.datasets[0].pointBackgroundColor = 'rgb(77, 79, 81)';
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chart.data.datasets[0].pointBorderColor = 'rgb(123, 125, 127)';
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chart.data.datasets[0].pointBorderWidth = 2.1;
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meta.controller.removeHoverStyle(point);
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expect(point._model.backgroundColor).toBe('rgb(77, 79, 81)');
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expect(point._model.borderColor).toBe('rgb(123, 125, 127)');
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expect(point._model.borderWidth).toBe(2.1);
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expect(point._model.radius).toBe(3.3);
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// Use the consistent name "pointRadius", setting but overwriting
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// another value in "radius"
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chart.data.datasets[0].pointRadius = 250;
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chart.data.datasets[0].radius = 20;
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meta.controller.removeHoverStyle(point);
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expect(point._model.backgroundColor).toBe('rgb(77, 79, 81)');
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expect(point._model.borderColor).toBe('rgb(123, 125, 127)');
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expect(point._model.borderWidth).toBe(2.1);
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expect(point._model.radius).toBe(250);
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// Custom style
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point.custom = {
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radius: 4.4,
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borderWidth: 5.5,
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backgroundColor: 'rgb(0, 0, 0)',
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borderColor: 'rgb(10, 10, 10)'
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};
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meta.controller.removeHoverStyle(point);
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expect(point._model.backgroundColor).toBe('rgb(0, 0, 0)');
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expect(point._model.borderColor).toBe('rgb(10, 10, 10)');
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expect(point._model.borderWidth).toBe(5.5);
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expect(point._model.radius).toBe(4.4);
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});
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});
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