// Test the bar controller
describe('Bar controller tests', function() {
beforeEach(function() {
window.addDefaultMatchers(jasmine);
});
afterEach(function() {
window.releaseAllCharts();
});
it('should be constructed', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [
{ data: [] },
{ data: [] }
],
labels: []
}
});
var meta = chart.getDatasetMeta(1);
expect(meta.type).toEqual('bar');
expect(meta.data).toEqual([]);
expect(meta.hidden).toBe(null);
expect(meta.controller).not.toBe(undefined);
expect(meta.controller.index).toBe(1);
expect(meta.xAxisID).not.toBe(null);
expect(meta.yAxisID).not.toBe(null);
meta.controller.updateIndex(0);
expect(meta.controller.index).toBe(0);
});
it('should use the first scale IDs if the dataset does not specify them', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [
{ data: [] },
{ data: [] }
],
labels: []
},
options: {
scales: {
xAxes: [{
id: 'firstXScaleID'
}],
yAxes: [{
id: 'firstYScaleID'
}]
}
}
});
var meta = chart.getDatasetMeta(1);
expect(meta.xAxisID).toBe('firstXScaleID');
expect(meta.yAxisID).toBe('firstYScaleID');
});
it('should correctly count the number of bar datasets', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [
{ data: [], type: 'line' },
{ data: [], hidden: true },
{ data: [] },
{ data: [] }
],
labels: []
}
});
var meta = chart.getDatasetMeta(1);
expect(meta.controller.getBarCount()).toBe(2);
});
it('should correctly get the bar index accounting for hidden datasets', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [
{ data: [] },
{ data: [], hidden: true },
{ data: [], type: 'line' },
{ data: [] }
],
labels: []
}
});
var meta = chart.getDatasetMeta(1);
expect(meta.controller.getBarIndex(0)).toBe(0);
expect(meta.controller.getBarIndex(3)).toBe(1);
});
it('should create rectangle elements for each data item during initialization', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [
{ data: [] },
{ data: [10, 15, 0, -4] }
],
labels: []
}
});
var meta = chart.getDatasetMeta(1);
expect(meta.data.length).toBe(4); // 4 rectangles created
expect(meta.data[0] instanceof Chart.elements.Rectangle).toBe(true);
expect(meta.data[1] instanceof Chart.elements.Rectangle).toBe(true);
expect(meta.data[2] instanceof Chart.elements.Rectangle).toBe(true);
expect(meta.data[3] instanceof Chart.elements.Rectangle).toBe(true);
});
it('should update elements when modifying data', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
data: [1, 2],
label: 'dataset1'
}, {
data: [10, 15, 0, -4],
label: 'dataset2',
borderColor: 'blue'
}],
labels: ['label1', 'label2', 'label3', 'label4']
},
options: {
elements: {
rectangle: {
backgroundColor: 'red',
borderSkipped: 'top',
borderColor: 'green',
borderWidth: 2,
}
},
scales: {
xAxes: [{
id: 'firstXScaleID',
type: 'category'
}],
yAxes: [{
id: 'firstYScaleID',
type: 'linear'
}]
}
}
});
var meta = chart.getDatasetMeta(1);
expect(meta.data.length).toBe(4);
chart.data.datasets[1].data = [1, 2]; // remove 2 items
chart.data.datasets[1].borderWidth = 1;
chart.update();
expect(meta.data.length).toBe(2);
[ { x: 122, y: 484 },
{ x: 234, y: 32 }
].forEach(function(expected, i) {
expect(meta.data[i]._datasetIndex).toBe(1);
expect(meta.data[i]._index).toBe(i);
expect(meta.data[i]._xScale).toBe(chart.scales.firstXScaleID);
expect(meta.data[i]._yScale).toBe(chart.scales.firstYScaleID);
expect(meta.data[i]._model.x).toBeCloseToPixel(expected.x);
expect(meta.data[i]._model.y).toBeCloseToPixel(expected.y);
expect(meta.data[i]._model.base).toBeCloseToPixel(484);
expect(meta.data[i]._model.width).toBeCloseToPixel(40);
expect(meta.data[i]._model).toEqual(jasmine.objectContaining({
datasetLabel: chart.config.data.datasets[1].label,
label: chart.config.data.labels[i],
backgroundColor: 'red',
borderSkipped: 'top',
borderColor: 'blue',
borderWidth: 1
}));
});
chart.data.datasets[1].data = [1, 2, 3]; // add 1 items
chart.update();
expect(meta.data.length).toBe(3); // should add a new meta data item
});
it('should get the correct bar points when datasets of different types exist', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
data: [1, 2],
label: 'dataset1'
}, {
type: 'line',
data: [4, 6],
label: 'dataset2'
}, {
data: [8, 10],
label: 'dataset3'
}],
labels: ['label1', 'label2']
},
options: {
scales: {
xAxes: [{
type: 'category'
}],
yAxes: [{
type: 'linear'
}]
}
}
});
var meta = chart.getDatasetMeta(2);
expect(meta.data.length).toBe(2);
var bar1 = meta.data[0];
var bar2 = meta.data[1];
expect(bar1._model.x).toBeCloseToPixel(194);
expect(bar1._model.y).toBeCloseToPixel(132);
expect(bar2._model.x).toBeCloseToPixel(424);
expect(bar2._model.y).toBeCloseToPixel(32);
});
it('should update elements when the scales are stacked', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
data: [10, -10, 10, -10],
label: 'dataset1'
}, {
data: [10, 15, 0, -4],
label: 'dataset2'
}],
labels: ['label1', 'label2', 'label3', 'label4']
},
options: {
scales: {
xAxes: [{
type: 'category',
stacked: true
}],
yAxes: [{
type: 'linear',
stacked: true
}]
}
}
});
var meta0 = chart.getDatasetMeta(0);
[ { b: 290, w: 91, x: 95, y: 161 },
{ b: 290, w: 91, x: 209, y: 419 },
{ b: 290, w: 91, x: 322, y: 161 },
{ b: 290, w: 91, x: 436, y: 419 }
].forEach(function(values, i) {
expect(meta0.data[i]._model.base).toBeCloseToPixel(values.b);
expect(meta0.data[i]._model.width).toBeCloseToPixel(values.w);
expect(meta0.data[i]._model.x).toBeCloseToPixel(values.x);
expect(meta0.data[i]._model.y).toBeCloseToPixel(values.y);
});
var meta1 = chart.getDatasetMeta(1);
[ { b: 161, w: 91, x: 95, y: 32 },
{ b: 290, w: 91, x: 209, y: 97 },
{ b: 161, w: 91, x: 322, y: 161 },
{ b: 419, w: 91, x: 436, y: 471 }
].forEach(function(values, i) {
expect(meta1.data[i]._model.base).toBeCloseToPixel(values.b);
expect(meta1.data[i]._model.width).toBeCloseToPixel(values.w);
expect(meta1.data[i]._model.x).toBeCloseToPixel(values.x);
expect(meta1.data[i]._model.y).toBeCloseToPixel(values.y);
});
});
it('should draw all bars', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
data: [],
}, {
data: [10, 15, 0, -4],
label: 'dataset2'
}],
labels: ['label1', 'label2', 'label3', 'label4']
}
});
var meta = chart.getDatasetMeta(1);
spyOn(meta.data[0], 'draw');
spyOn(meta.data[1], 'draw');
spyOn(meta.data[2], 'draw');
spyOn(meta.data[3], 'draw');
chart.update();
expect(meta.data[0].draw.calls.count()).toBe(1);
expect(meta.data[1].draw.calls.count()).toBe(1);
expect(meta.data[2].draw.calls.count()).toBe(1);
expect(meta.data[3].draw.calls.count()).toBe(1);
});
it('should set hover styles on rectangles', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
data: [],
}, {
data: [10, 15, 0, -4],
label: 'dataset2'
}],
labels: ['label1', 'label2', 'label3', 'label4']
},
options: {
elements: {
rectangle: {
backgroundColor: 'rgb(255, 0, 0)',
borderColor: 'rgb(0, 0, 255)',
borderWidth: 2,
}
}
}
});
var meta = chart.getDatasetMeta(1);
var bar = meta.data[0];
meta.controller.setHoverStyle(bar);
expect(bar._model.backgroundColor).toBe('rgb(230, 0, 0)');
expect(bar._model.borderColor).toBe('rgb(0, 0, 230)');
expect(bar._model.borderWidth).toBe(2);
// Set a dataset style
chart.data.datasets[1].hoverBackgroundColor = 'rgb(128, 128, 128)';
chart.data.datasets[1].hoverBorderColor = 'rgb(0, 0, 0)';
chart.data.datasets[1].hoverBorderWidth = 5;
meta.controller.setHoverStyle(bar);
expect(bar._model.backgroundColor).toBe('rgb(128, 128, 128)');
expect(bar._model.borderColor).toBe('rgb(0, 0, 0)');
expect(bar._model.borderWidth).toBe(5);
// Should work with array styles so that we can set per bar
chart.data.datasets[1].hoverBackgroundColor = ['rgb(255, 255, 255)', 'rgb(128, 128, 128)'];
chart.data.datasets[1].hoverBorderColor = ['rgb(9, 9, 9)', 'rgb(0, 0, 0)'];
chart.data.datasets[1].hoverBorderWidth = [2.5, 5];
meta.controller.setHoverStyle(bar);
expect(bar._model.backgroundColor).toBe('rgb(255, 255, 255)');
expect(bar._model.borderColor).toBe('rgb(9, 9, 9)');
expect(bar._model.borderWidth).toBe(2.5);
// Should allow a custom style
bar.custom = {
hoverBackgroundColor: 'rgb(255, 0, 0)',
hoverBorderColor: 'rgb(0, 255, 0)',
hoverBorderWidth: 1.5
};
meta.controller.setHoverStyle(bar);
expect(bar._model.backgroundColor).toBe('rgb(255, 0, 0)');
expect(bar._model.borderColor).toBe('rgb(0, 255, 0)');
expect(bar._model.borderWidth).toBe(1.5);
});
it('should remove a hover style from a bar', function() {
var chart = window.acquireChart({
type: 'bar',
data: {
datasets: [{
data: [],
}, {
data: [10, 15, 0, -4],
label: 'dataset2'
}],
labels: ['label1', 'label2', 'label3', 'label4']
},
options: {
elements: {
rectangle: {
backgroundColor: 'rgb(255, 0, 0)',
borderColor: 'rgb(0, 0, 255)',
borderWidth: 2,
}
}
}
});
var meta = chart.getDatasetMeta(1);
var bar = meta.data[0];
// Change default
chart.options.elements.rectangle.backgroundColor = 'rgb(128, 128, 128)';
chart.options.elements.rectangle.borderColor = 'rgb(15, 15, 15)';
chart.options.elements.rectangle.borderWidth = 3.14;
// Remove to defaults
meta.controller.removeHoverStyle(bar);
expect(bar._model.backgroundColor).toBe('rgb(128, 128, 128)');
expect(bar._model.borderColor).toBe('rgb(15, 15, 15)');
expect(bar._model.borderWidth).toBe(3.14);
// Should work with array styles so that we can set per bar
chart.data.datasets[1].backgroundColor = ['rgb(255, 255, 255)', 'rgb(128, 128, 128)'];
chart.data.datasets[1].borderColor = ['rgb(9, 9, 9)', 'rgb(0, 0, 0)'];
chart.data.datasets[1].borderWidth = [2.5, 5];
meta.controller.removeHoverStyle(bar);
expect(bar._model.backgroundColor).toBe('rgb(255, 255, 255)');
expect(bar._model.borderColor).toBe('rgb(9, 9, 9)');
expect(bar._model.borderWidth).toBe(2.5);
// Should allow a custom style
bar.custom = {
backgroundColor: 'rgb(255, 0, 0)',
borderColor: 'rgb(0, 255, 0)',
borderWidth: 1.5
};
meta.controller.removeHoverStyle(bar);
expect(bar._model.backgroundColor).toBe('rgb(255, 0, 0)');
expect(bar._model.borderColor).toBe('rgb(0, 255, 0)');
expect(bar._model.borderWidth).toBe(1.5);
});
});
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