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631 lines
16 KiB
JavaScript
631 lines
16 KiB
JavaScript
describe('Logarithmic Scale tests', function() {
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it('Should register the constructor with the scale service', function() {
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var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
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expect(Constructor).not.toBe(undefined);
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expect(typeof Constructor).toBe('function');
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});
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it('Should have the correct default config', function() {
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var defaultConfig = Chart.scaleService.getScaleDefaults('logarithmic');
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expect(defaultConfig).toEqual({
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display: true,
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gridLines: {
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color: "rgba(0, 0, 0, 0.1)",
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drawOnChartArea: true,
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drawTicks: true,
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tickMarkLength: 10,
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lineWidth: 1,
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offsetGridLines: false,
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display: true,
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zeroLineColor: "rgba(0,0,0,0.25)",
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zeroLineWidth: 1,
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},
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position: "left",
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scaleLabel: {
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labelString: '',
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display: false,
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},
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ticks: {
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beginAtZero: false,
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maxRotation: 50,
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mirror: false,
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padding: 10,
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reverse: false,
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display: true,
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callback: defaultConfig.ticks.callback, // make this nicer, then check explicitly below
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autoSkip: true,
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autoSkipPadding: 0
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},
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});
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// Is this actually a function
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expect(defaultConfig.ticks.callback).toEqual(jasmine.any(Function));
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});
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it('Should correctly determine the max & min data values', function() {
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var scaleID = 'myScale';
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var mockData = {
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datasets: [{
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yAxisID: scaleID,
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data: [10, 5, 5000, 78, 450]
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}, {
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yAxisID: 'second scale',
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data: [1, 1000, 10, 100],
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}, {
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yAxisID: scaleID,
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data: [150]
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}]
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};
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var mockContext = window.createMockContext();
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var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
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var scale = new Constructor({
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ctx: mockContext,
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options: Chart.scaleService.getScaleDefaults('logarithmic'), // use default config for scale
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chart: {
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data: mockData,
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},
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id: scaleID
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});
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expect(scale).not.toEqual(undefined); // must construct
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expect(scale.min).toBe(undefined); // not yet set
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expect(scale.max).toBe(undefined);
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scale.update(400, 400);
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expect(scale.min).toBe(1);
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expect(scale.max).toBe(5000);
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});
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it('Should correctly determine the max & min of string data values', function() {
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var scaleID = 'myScale';
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var mockData = {
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datasets: [{
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yAxisID: scaleID,
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data: ['10', '5', '5000', '78', '450']
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}, {
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yAxisID: 'second scale',
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data: ['1', '1000', '10', '100'],
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}, {
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yAxisID: scaleID,
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data: ['150']
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}]
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};
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var mockContext = window.createMockContext();
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var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
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var scale = new Constructor({
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ctx: mockContext,
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options: Chart.scaleService.getScaleDefaults('logarithmic'), // use default config for scale
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chart: {
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data: mockData,
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},
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id: scaleID
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});
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expect(scale).not.toEqual(undefined); // must construct
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expect(scale.min).toBe(undefined); // not yet set
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expect(scale.max).toBe(undefined);
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scale.update(400, 400);
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expect(scale.min).toBe(1);
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expect(scale.max).toBe(5000);
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});
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it('Should correctly determine the max & min data values when there are hidden datasets', function() {
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var scaleID = 'myScale';
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var mockData = {
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datasets: [{
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yAxisID: scaleID,
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data: [10, 5, 5000, 78, 450]
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}, {
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yAxisID: 'second scale',
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data: [1, 1000, 10, 100],
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}, {
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yAxisID: scaleID,
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data: [50000],
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hidden: true
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}]
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};
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var mockContext = window.createMockContext();
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var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
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var scale = new Constructor({
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ctx: mockContext,
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options: Chart.scaleService.getScaleDefaults('logarithmic'), // use default config for scale
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chart: {
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data: mockData
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},
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id: scaleID
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});
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expect(scale).not.toEqual(undefined); // must construct
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expect(scale.min).toBe(undefined); // not yet set
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expect(scale.max).toBe(undefined);
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scale.update(400, 400);
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expect(scale.min).toBe(1);
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expect(scale.max).toBe(5000);
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});
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it('Should correctly determine the max & min data values when there is NaN data', function() {
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var scaleID = 'myScale';
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var mockData = {
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datasets: [{
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yAxisID: scaleID,
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data: [undefined, 10, null, 5, 5000, NaN, 78, 450]
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}]
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};
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var mockContext = window.createMockContext();
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var options = Chart.scaleService.getScaleDefaults('logarithmic');
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var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
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var scale = new Constructor({
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ctx: mockContext,
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options: options, // use default config for scale
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chart: {
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data: mockData
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},
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id: scaleID
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});
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expect(scale).not.toEqual(undefined); // must construct
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expect(scale.min).toBe(undefined); // not yet set
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expect(scale.max).toBe(undefined);
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scale.update(400, 400);
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expect(scale.min).toBe(1);
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expect(scale.max).toBe(5000);
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// Turn on stacked mode since it uses it's own
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options.stacked = true;
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scale.update(400, 400);
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expect(scale.min).toBe(1);
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expect(scale.max).toBe(5000);
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});
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it('Should correctly determine the max & min for scatter data', function() {
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var scaleID = 'myScale';
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var mockData = {
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datasets: [{
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xAxisID: scaleID, // for the horizontal scale
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yAxisID: scaleID,
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data: [{
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x: 10,
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y: 100
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}, {
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x: 2,
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y: 6
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}, {
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x: 65,
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y: 121
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}, {
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x: 99,
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y: 7
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}]
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}]
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};
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var mockContext = window.createMockContext();
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var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
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var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
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var verticalScale = new Constructor({
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ctx: mockContext,
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options: config,
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chart: {
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data: mockData
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},
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id: scaleID
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});
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verticalScale.update(400, 400);
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expect(verticalScale.min).toBe(1);
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expect(verticalScale.max).toBe(200);
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var horizontalConfig = Chart.helpers.clone(config);
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horizontalConfig.position = 'bottom';
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var horizontalScale = new Constructor({
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ctx: mockContext,
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options: horizontalConfig,
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chart: {
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data: mockData
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},
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id: scaleID,
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});
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horizontalScale.update(400, 400);
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expect(horizontalScale.min).toBe(1);
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expect(horizontalScale.max).toBe(100);
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});
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it('Should correctly determine the min and max data values when stacked mode is turned on', function() {
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var scaleID = 'myScale';
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var mockData = {
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datasets: [{
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yAxisID: scaleID,
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data: [10, 5, 1, 5, 78, 100],
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type: 'bar'
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}, {
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yAxisID: 'second scale',
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data: [-1000, 1000],
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}, {
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yAxisID: scaleID,
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data: [150, 10, 10, 100, 10, 9],
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type: 'bar'
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}, {
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yAxisID: scaleID,
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data: [100, 100, 100, 100, 100, 100],
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type: 'line'
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}]
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};
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var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
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config.stacked = true; // enable scale stacked mode
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var mockContext = window.createMockContext();
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var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
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var scale = new Constructor({
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ctx: mockContext,
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options: config,
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chart: {
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data: mockData
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},
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id: scaleID
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});
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scale.update(400, 400);
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expect(scale.min).toBe(10);
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expect(scale.max).toBe(200);
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});
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it('Should correctly determine the min and max data values when stacked mode is turned on ignoring hidden datasets', function() {
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var scaleID = 'myScale';
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var mockData = {
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datasets: [{
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yAxisID: scaleID,
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data: [10, 5, 1, 5, 78, 100],
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type: 'bar'
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}, {
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yAxisID: 'second scale',
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data: [-1000, 1000],
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type: 'bar'
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}, {
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yAxisID: scaleID,
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data: [150, 10, 10, 100, 10, 9],
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type: 'bar'
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}, {
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yAxisID: scaleID,
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data: [10000, 10000, 10000, 10000, 10000, 10000],
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hidden: true,
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type: 'bar'
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}]
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};
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var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
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config.stacked = true; // enable scale stacked mode
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var mockContext = window.createMockContext();
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var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
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var scale = new Constructor({
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ctx: mockContext,
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options: config,
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chart: {
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data: mockData
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},
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id: scaleID
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});
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scale.update(400, 400);
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expect(scale.min).toBe(10);
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expect(scale.max).toBe(200);
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});
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it('Should ensure that the scale has a max and min that are not equal', function() {
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var scaleID = 'myScale';
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var mockData = {
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datasets: []
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};
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var mockContext = window.createMockContext();
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var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
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var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
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var scale = new Constructor({
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ctx: mockContext,
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options: config,
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chart: {
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data: mockData
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},
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id: scaleID
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});
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scale.update(400, 00);
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expect(scale.min).toBe(1);
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expect(scale.max).toBe(10);
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mockData.datasets = [{
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yAxisID: scaleID,
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data: [0.15, 0.15]
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}];
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scale.update(400, 400);
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expect(scale.min).toBe(0.01);
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expect(scale.max).toBe(1);
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});
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it('Should use the min and max options', function() {
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var scaleID = 'myScale';
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var mockData = {
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datasets: [{
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yAxisID: scaleID,
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data: [1, 1, 1, 2, 1, 0]
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}]
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};
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var mockContext = window.createMockContext();
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var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
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config.ticks.min = 10;
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config.ticks.max = 1010;
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var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
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var scale = new Constructor({
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ctx: mockContext,
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options: config,
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chart: {
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data: mockData
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},
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id: scaleID
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});
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scale.update(400, 00);
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scale.buildTicks();
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expect(scale.min).toBe(10);
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expect(scale.max).toBe(1010);
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expect(scale.ticks[0]).toBe(1010);
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expect(scale.ticks[scale.ticks.length - 1]).toBe(10);
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});
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it('Should generate tick marks', function() {
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var scaleID = 'myScale';
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var mockData = {
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datasets: [{
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yAxisID: scaleID,
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data: [10, 5, 1, 25, 78]
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}, ]
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};
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var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
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var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
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var scale = new Constructor({
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ctx: {},
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options: config,
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chart: {
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data: mockData
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},
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id: scaleID
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});
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// Set arbitrary width and height for now
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scale.width = 50;
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scale.height = 400;
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scale.determineDataLimits();
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scale.buildTicks();
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// Counts down because the lines are drawn top to bottom
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expect(scale.ticks).toEqual([80, 70, 60, 50, 40, 30, 20, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1]);
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expect(scale.start).toBe(1);
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expect(scale.end).toBe(80);
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});
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it('Should generate tick marks in the correct order in reversed mode', function() {
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var scaleID = 'myScale';
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var mockData = {
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datasets: [{
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yAxisID: scaleID,
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data: [10, 5, 1, 25, 78]
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}, ]
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};
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var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
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config.ticks.reverse = true;
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var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
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var scale = new Constructor({
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ctx: {},
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options: config,
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chart: {
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data: mockData
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},
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id: scaleID
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});
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// Set arbitrary width and height for now
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scale.width = 50;
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scale.height = 400;
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scale.determineDataLimits();
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scale.buildTicks();
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// Counts down because the lines are drawn top to bottom
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expect(scale.ticks).toEqual([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 30, 40, 50, 60, 70, 80]);
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expect(scale.start).toBe(80);
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expect(scale.end).toBe(1);
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});
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it('Should build labels using the default template', function() {
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var scaleID = 'myScale';
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var mockData = {
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datasets: [{
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yAxisID: scaleID,
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data: [10, 5, 1, 25, 78]
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}, ]
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};
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var mockContext = window.createMockContext();
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var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
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var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
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var scale = new Constructor({
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ctx: mockContext,
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options: config,
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chart: {
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data: mockData
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},
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id: scaleID
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});
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scale.update(400, 400);
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expect(scale.ticks).toEqual(['8e+1', '', '', '5e+1', '', '', '2e+1', '1e+1', '', '', '', '', '5e+0', '', '', '2e+0', '1e+0']);
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});
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it('Should build labels using the user supplied callback', function() {
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var scaleID = 'myScale';
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var mockData = {
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datasets: [{
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yAxisID: scaleID,
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data: [10, 5, 1, 25, 78]
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}, ]
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};
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var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
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config.ticks.userCallback = function(value, index) {
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return index.toString();
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};
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var mockContext = window.createMockContext();
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var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
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var scale = new Constructor({
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ctx: mockContext,
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options: config,
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chart: {
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data: mockData
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},
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id: scaleID
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});
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scale.update(400, 400);
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// Just the index
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expect(scale.ticks).toEqual(['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15', '16']);
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});
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it('Should correctly get the correct label for a data item', function() {
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var scaleID = 'myScale';
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var mockData = {
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datasets: [{
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yAxisID: scaleID,
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data: [10, 5, 5000, 78, 450]
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}, {
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yAxisID: 'second scale',
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data: [1, 1000, 10, 100],
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}, {
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yAxisID: scaleID,
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data: [150]
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}]
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};
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var mockContext = window.createMockContext();
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var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
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var scale = new Constructor({
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ctx: mockContext,
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options: Chart.scaleService.getScaleDefaults('logarithmic'), // use default config for scale
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chart: {
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data: mockData,
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},
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id: scaleID
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});
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scale.update(400, 400);
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expect(scale.getLabelForIndex(0, 2)).toBe(150);
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});
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it('Should get the correct pixel value for a point', function() {
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var scaleID = 'myScale';
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var mockData = {
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datasets: [{
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xAxisID: scaleID, // for the horizontal scale
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yAxisID: scaleID,
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data: [10, 5, 1, 25, 78]
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}]
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};
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var mockContext = window.createMockContext();
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var config = Chart.helpers.clone(Chart.scaleService.getScaleDefaults('logarithmic'));
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var Constructor = Chart.scaleService.getScaleConstructor('logarithmic');
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var verticalScale = new Constructor({
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ctx: mockContext,
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options: config,
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chart: {
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data: mockData
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|
},
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|
id: scaleID
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|
});
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|
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verticalScale.update(50, 100);
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|
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// Fake out positioning of the scale service
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|
verticalScale.left = 0;
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|
verticalScale.top = 0;
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|
verticalScale.right = 50;
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|
verticalScale.bottom = 110;
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|
verticalScale.paddingTop = 5;
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|
verticalScale.paddingBottom = 5;
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|
verticalScale.width = 50;
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|
verticalScale.height = 110;
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|
|
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expect(verticalScale.getPixelForValue(80, 0, 0)).toBe(5); // top + paddingTop
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expect(verticalScale.getPixelForValue(1, 0, 0)).toBe(105); // bottom - paddingBottom
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|
expect(verticalScale.getPixelForValue(10, 0, 0)).toBeCloseTo(52.4, 1e-4); // halfway
|
|
expect(verticalScale.getPixelForValue(0, 0, 0)).toBe(5); // 0 is invalid. force it on top
|
|
|
|
var horizontalConfig = Chart.helpers.clone(config);
|
|
horizontalConfig.position = 'bottom';
|
|
var horizontalScale = new Constructor({
|
|
ctx: mockContext,
|
|
options: horizontalConfig,
|
|
chart: {
|
|
data: mockData
|
|
},
|
|
id: scaleID,
|
|
});
|
|
|
|
horizontalScale.update(100, 50);
|
|
|
|
// Fake out positioning of the scale service
|
|
horizontalScale.left = 0;
|
|
horizontalScale.top = 0;
|
|
horizontalScale.right = 110;
|
|
horizontalScale.bottom = 50;
|
|
horizontalScale.paddingLeft = 5;
|
|
horizontalScale.paddingRight = 5;
|
|
horizontalScale.width = 110;
|
|
horizontalScale.height = 50;
|
|
|
|
expect(horizontalScale.getPixelForValue(80, 0, 0)).toBe(105); // right - paddingRight
|
|
expect(horizontalScale.getPixelForValue(1, 0, 0)).toBe(5); // left + paddingLeft
|
|
expect(horizontalScale.getPixelForValue(10, 0, 0)).toBeCloseTo(57.5, 1e-4); // halfway
|
|
expect(horizontalScale.getPixelForValue(0, 0, 0)).toBe(5); // 0 is invalid, put it on the left.
|
|
});
|
|
});
|