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describe('Chart.controllers.doughnut', function() {
describe('auto', jasmine.fixture.specs('controller.doughnut'));
it('should be registered as dataset controller', function() {
expect(typeof Chart.controllers.doughnut).toBe('function');
expect(Chart.controllers.doughnut).toBe(Chart.controllers.pie);
});
it('should be constructed', function() {
var chart = window.acquireChart({
type: 'doughnut',
data: {
datasets: [{
data: []
}],
labels: []
}
});
var meta = chart.getDatasetMeta(0);
expect(meta.type).toBe('doughnut');
expect(meta.controller).not.toBe(undefined);
expect(meta.controller.index).toBe(0);
expect(meta.data).toEqual([]);
meta.controller.updateIndex(1);
expect(meta.controller.index).toBe(1);
});
it('should create arc elements for each data item during initialization', function() {
var chart = window.acquireChart({
type: 'doughnut',
data: {
datasets: [{
data: [10, 15, 0, 4]
}],
labels: []
}
});
var meta = chart.getDatasetMeta(0);
expect(meta.data.length).toBe(4); // 4 rectangles created
expect(meta.data[0] instanceof Chart.elements.Arc).toBe(true);
expect(meta.data[1] instanceof Chart.elements.Arc).toBe(true);
expect(meta.data[2] instanceof Chart.elements.Arc).toBe(true);
expect(meta.data[3] instanceof Chart.elements.Arc).toBe(true);
});
it('should set the innerRadius to 0 if the config option is 0', function() {
var chart = window.acquireChart({
type: 'pie',
data: {
datasets: [{
data: [10, 15, 0, 4]
}],
labels: []
}
});
expect(chart.innerRadius).toBe(0);
});
it ('should reset and update elements', function() {
var chart = window.acquireChart({
type: 'doughnut',
data: {
datasets: [{
data: [1, 2, 3, 4],
hidden: true
}, {
data: [5, 6, 0, 7]
}, {
data: [8, 9, 10, 11]
}],
labels: ['label0', 'label1', 'label2', 'label3']
},
options: {
legend: false,
title: false,
animation: {
animateRotate: true,
animateScale: false
},
cutoutPercentage: 50,
rotation: Math.PI * -0.5,
circumference: Math.PI * 2.0,
elements: {
arc: {
backgroundColor: 'rgb(255, 0, 0)',
borderColor: 'rgb(0, 0, 255)',
borderWidth: 2
}
}
}
});
var meta = chart.getDatasetMeta(1);
meta.controller.reset(); // reset first
expect(meta.data.length).toBe(4);
[
{c: 0},
{c: 0},
{c: 0},
{c: 0}
].forEach(function(expected, i) {
expect(meta.data[i]._model.x).toBeCloseToPixel(256);
expect(meta.data[i]._model.y).toBeCloseToPixel(256);
expect(meta.data[i]._model.outerRadius).toBeCloseToPixel(256);
expect(meta.data[i]._model.innerRadius).toBeCloseToPixel(192);
expect(meta.data[i]._model.circumference).toBeCloseTo(expected.c, 8);
expect(meta.data[i]._model).toEqual(jasmine.objectContaining({
startAngle: Math.PI * -0.5,
endAngle: Math.PI * -0.5,
label: chart.data.labels[i],
backgroundColor: 'rgb(255, 0, 0)',
borderColor: 'rgb(0, 0, 255)',
borderWidth: 2
}));
});
chart.update();
[
{c: 1.7453292519, s: -1.5707963267, e: 0.1745329251},
{c: 2.0943951023, s: 0.1745329251, e: 2.2689280275},
{c: 0, s: 2.2689280275, e: 2.2689280275},
{c: 2.4434609527, s: 2.2689280275, e: 4.7123889803}
].forEach(function(expected, i) {
expect(meta.data[i]._model.x).toBeCloseToPixel(256);
expect(meta.data[i]._model.y).toBeCloseToPixel(256);
expect(meta.data[i]._model.outerRadius).toBeCloseToPixel(256);
expect(meta.data[i]._model.innerRadius).toBeCloseToPixel(192);
expect(meta.data[i]._model.circumference).toBeCloseTo(expected.c, 8);
expect(meta.data[i]._model.startAngle).toBeCloseTo(expected.s, 8);
expect(meta.data[i]._model.endAngle).toBeCloseTo(expected.e, 8);
expect(meta.data[i]._model).toEqual(jasmine.objectContaining({
label: chart.data.labels[i],
backgroundColor: 'rgb(255, 0, 0)',
borderColor: 'rgb(0, 0, 255)',
borderWidth: 2
}));
});
// Change the amount of data and ensure that arcs are updated accordingly
chart.data.datasets[1].data = [1, 2]; // remove 2 elements from dataset 0
chart.update();
expect(meta.data.length).toBe(2);
expect(meta.data[0] instanceof Chart.elements.Arc).toBe(true);
expect(meta.data[1] instanceof Chart.elements.Arc).toBe(true);
// Add data
chart.data.datasets[1].data = [1, 2, 3, 4];
chart.update();
expect(meta.data.length).toBe(4);
expect(meta.data[0] instanceof Chart.elements.Arc).toBe(true);
expect(meta.data[1] instanceof Chart.elements.Arc).toBe(true);
expect(meta.data[2] instanceof Chart.elements.Arc).toBe(true);
expect(meta.data[3] instanceof Chart.elements.Arc).toBe(true);
});
it ('should rotate and limit circumference', function() {
var chart = window.acquireChart({
type: 'doughnut',
data: {
datasets: [{
data: [2, 4],
hidden: true
}, {
data: [1, 3]
}, {
data: [1, 0]
}],
labels: ['label0', 'label1']
},
options: {
legend: false,
title: false,
cutoutPercentage: 50,
rotation: Math.PI,
circumference: Math.PI * 0.5,
elements: {
arc: {
backgroundColor: 'rgb(255, 0, 0)',
borderColor: 'rgb(0, 0, 255)',
borderWidth: 2
}
}
}
});
var meta = chart.getDatasetMeta(1);
expect(meta.data.length).toBe(2);
// Only startAngle, endAngle and circumference should be different.
[
{c: Math.PI / 8, s: Math.PI, e: Math.PI + Math.PI / 8},
{c: 3 * Math.PI / 8, s: Math.PI + Math.PI / 8, e: Math.PI + Math.PI / 2}
].forEach(function(expected, i) {
expect(meta.data[i]._model.x).toBeCloseToPixel(512);
expect(meta.data[i]._model.y).toBeCloseToPixel(512);
expect(meta.data[i]._model.outerRadius).toBeCloseToPixel(512);
expect(meta.data[i]._model.innerRadius).toBeCloseToPixel(384);
expect(meta.data[i]._model.circumference).toBeCloseTo(expected.c, 8);
expect(meta.data[i]._model.startAngle).toBeCloseTo(expected.s, 8);
expect(meta.data[i]._model.endAngle).toBeCloseTo(expected.e, 8);
});
});
it('should treat negative values as positive', function() {
var chart = window.acquireChart({
type: 'doughnut',
data: {
datasets: [{
data: [-1, -3]
}],
labels: ['label0', 'label1']
},
options: {
legend: false,
title: false,
cutoutPercentage: 50,
rotation: Math.PI,
circumference: Math.PI * 0.5,
elements: {
arc: {
backgroundColor: 'rgb(255, 0, 0)',
borderColor: 'rgb(0, 0, 255)',
borderWidth: 2
}
}
}
});
var meta = chart.getDatasetMeta(0);
expect(meta.data.length).toBe(2);
// Only startAngle, endAngle and circumference should be different.
[
{c: Math.PI / 8, s: Math.PI, e: Math.PI + Math.PI / 8},
{c: 3 * Math.PI / 8, s: Math.PI + Math.PI / 8, e: Math.PI + Math.PI / 2}
].forEach(function(expected, i) {
expect(meta.data[i]._model.circumference).toBeCloseTo(expected.c, 8);
expect(meta.data[i]._model.startAngle).toBeCloseTo(expected.s, 8);
expect(meta.data[i]._model.endAngle).toBeCloseTo(expected.e, 8);
});
});
it ('should draw all arcs', function() {
var chart = window.acquireChart({
type: 'doughnut',
data: {
datasets: [{
data: [10, 15, 0, 4]
}],
labels: ['label0', 'label1', 'label2', 'label3']
}
});
var meta = chart.getDatasetMeta(0);
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 calculate radiuses based on the border widths of the visible outermost dataset', function() {
var chart = window.acquireChart({
type: 'doughnut',
data: {
datasets: [{
data: [2, 4],
borderWidth: 4,
hidden: true
}, {
data: [1, 3],
borderWidth: 8
}, {
data: [1, 0],
borderWidth: 12
}],
labels: ['label0', 'label1']
},
options: {
legend: false,
title: false
}
});
chart.update();
expect(chart.chartArea.bottom - chart.chartArea.top).toBe(512);
expect(chart.borderWidth).toBe(8);
expect(chart.outerRadius).toBe(252);
expect(chart.innerRadius).toBe(126);
expect(chart.radiusLength).toBe(63);
var controller = chart.getDatasetMeta(0).controller;
expect(controller.getMaxBorderWidth()).toBe(8);
expect(controller.outerRadius).toBe(252);
expect(controller.innerRadius).toBe(189);
controller = chart.getDatasetMeta(1).controller;
expect(controller.getMaxBorderWidth()).toBe(8);
expect(controller.outerRadius).toBe(252);
expect(controller.innerRadius).toBe(189);
controller = chart.getDatasetMeta(2).controller;
expect(controller.getMaxBorderWidth()).toBe(8);
expect(controller.outerRadius).toBe(189);
expect(controller.innerRadius).toBe(126);
});
describe('Interactions', function() {
beforeEach(function() {
this.chart = window.acquireChart({
type: 'doughnut',
data: {
labels: ['label1', 'label2', 'label3', 'label4'],
datasets: [{
data: [10, 15, 0, 4]
}]
},
options: {
cutoutPercentage: 0,
elements: {
arc: {
backgroundColor: 'rgb(100, 150, 200)',
borderColor: 'rgb(50, 100, 150)',
borderWidth: 2,
}
}
}
});
});
it ('should handle default hover styles', function() {
var chart = this.chart;
var arc = chart.getDatasetMeta(0).data[0];
jasmine.triggerMouseEvent(chart, 'mousemove', arc);
expect(arc._model.backgroundColor).toBe('rgb(49, 135, 221)');
expect(arc._model.borderColor).toBe('rgb(22, 89, 156)');
expect(arc._model.borderWidth).toBe(2);
jasmine.triggerMouseEvent(chart, 'mouseout', arc);
expect(arc._model.backgroundColor).toBe('rgb(100, 150, 200)');
expect(arc._model.borderColor).toBe('rgb(50, 100, 150)');
expect(arc._model.borderWidth).toBe(2);
});
it ('should handle hover styles defined via dataset properties', function() {
var chart = this.chart;
var arc = chart.getDatasetMeta(0).data[0];
Chart.helpers.merge(chart.data.datasets[0], {
hoverBackgroundColor: 'rgb(200, 100, 150)',
hoverBorderColor: 'rgb(150, 50, 100)',
hoverBorderWidth: 8.4,
});
chart.update();
jasmine.triggerMouseEvent(chart, 'mousemove', arc);
expect(arc._model.backgroundColor).toBe('rgb(200, 100, 150)');
expect(arc._model.borderColor).toBe('rgb(150, 50, 100)');
expect(arc._model.borderWidth).toBe(8.4);
jasmine.triggerMouseEvent(chart, 'mouseout', arc);
expect(arc._model.backgroundColor).toBe('rgb(100, 150, 200)');
expect(arc._model.borderColor).toBe('rgb(50, 100, 150)');
expect(arc._model.borderWidth).toBe(2);
});
it ('should handle hover styles defined via element options', function() {
var chart = this.chart;
var arc = chart.getDatasetMeta(0).data[0];
Chart.helpers.merge(chart.options.elements.arc, {
hoverBackgroundColor: 'rgb(200, 100, 150)',
hoverBorderColor: 'rgb(150, 50, 100)',
hoverBorderWidth: 8.4,
});
chart.update();
jasmine.triggerMouseEvent(chart, 'mousemove', arc);
expect(arc._model.backgroundColor).toBe('rgb(200, 100, 150)');
expect(arc._model.borderColor).toBe('rgb(150, 50, 100)');
expect(arc._model.borderWidth).toBe(8.4);
jasmine.triggerMouseEvent(chart, 'mouseout', arc);
expect(arc._model.backgroundColor).toBe('rgb(100, 150, 200)');
expect(arc._model.borderColor).toBe('rgb(50, 100, 150)');
expect(arc._model.borderWidth).toBe(2);
});
it ('should handle hover styles defined via element custom', function() {
var chart = this.chart;
var arc = chart.getDatasetMeta(0).data[0];
arc.custom = {
hoverBackgroundColor: 'rgb(200, 100, 150)',
hoverBorderColor: 'rgb(150, 50, 100)',
hoverBorderWidth: 8.4,
};
chart.update();
jasmine.triggerMouseEvent(chart, 'mousemove', arc);
expect(arc._model.backgroundColor).toBe('rgb(200, 100, 150)');
expect(arc._model.borderColor).toBe('rgb(150, 50, 100)');
expect(arc._model.borderWidth).toBe(8.4);
jasmine.triggerMouseEvent(chart, 'mouseout', arc);
expect(arc._model.backgroundColor).toBe('rgb(100, 150, 200)');
expect(arc._model.borderColor).toBe('rgb(50, 100, 150)');
expect(arc._model.borderWidth).toBe(2);
});
});
});