// Test the polar area controller
describe('Polar area controller tests', function() {
beforeEach(function() {
window.addDefaultMatchers(jasmine);
});
afterEach(function() {
window.releaseAllCharts();
});
it('should be constructed', function() {
var chart = window.acquireChart({
type: 'polarArea',
data: {
datasets: [
{ data: [] },
{ data: [] }
],
labels: []
}
});
var meta = chart.getDatasetMeta(1);
expect(meta.type).toEqual('polarArea');
expect(meta.data).toEqual([]);
expect(meta.hidden).toBe(null);
expect(meta.controller).not.toBe(undefined);
expect(meta.controller.index).toBe(1);
meta.controller.updateIndex(0);
expect(meta.controller.index).toBe(0);
});
it('should create arc elements for each data item during initialization', function() {
var chart = window.acquireChart({
type: 'polarArea',
data: {
datasets: [
{ data: [] },
{ data: [10, 15, 0, -4] }
],
labels: []
}
});
var meta = chart.getDatasetMeta(1);
expect(meta.data.length).toBe(4); // 4 arcs 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 draw all elements', function() {
var chart = window.acquireChart({
type: 'polarArea',
data: {
datasets: [{
data: [10, 15, 0, -4],
label: 'dataset2'
}],
labels: ['label1', 'label2', 'label3', 'label4']
}
});
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 update elements when modifying data', function() {
var chart = window.acquireChart({
type: 'polarArea',
data: {
datasets: [{
data: [10, 15, 0, -4],
label: 'dataset2'
}],
labels: ['label1', 'label2', 'label3', 'label4']
},
options: {
showLines: true,
elements: {
arc: {
backgroundColor: 'rgb(255, 0, 0)',
borderColor: 'rgb(0, 255, 0)',
borderWidth: 1.2
}
}
}
});
var meta = chart.getDatasetMeta(0);
expect(meta.data.length).toBe(4);
[ { o: 156, s: -0.5 * Math.PI, e: 0 },
{ o: 211, s: 0, e: 0.5 * Math.PI },
{ o: 45, s: 0.5 * Math.PI, e: Math.PI },
{ o: 0, s: Math.PI, e: 1.5 * Math.PI }
].forEach(function(expected, i) {
expect(meta.data[i]._model.x).toBeCloseToPixel(256);
expect(meta.data[i]._model.y).toBeCloseToPixel(272);
expect(meta.data[i]._model.innerRadius).toBeCloseToPixel(0);
expect(meta.data[i]._model.outerRadius).toBeCloseToPixel(expected.o);
expect(meta.data[i]._model.startAngle).toBe(expected.s);
expect(meta.data[i]._model.endAngle).toBe(expected.e);
expect(meta.data[i]._model).toEqual(jasmine.objectContaining({
backgroundColor: 'rgb(255, 0, 0)',
borderColor: 'rgb(0, 255, 0)',
borderWidth: 1.2,
label: chart.data.labels[i]
}));
});
// arc styles
chart.data.datasets[0].backgroundColor = 'rgb(128, 129, 130)';
chart.data.datasets[0].borderColor = 'rgb(56, 57, 58)';
chart.data.datasets[0].borderWidth = 1.123;
chart.update();
for (var i = 0; i < 4; ++i) {
expect(meta.data[i]._model.backgroundColor).toBe('rgb(128, 129, 130)');
expect(meta.data[i]._model.borderColor).toBe('rgb(56, 57, 58)');
expect(meta.data[i]._model.borderWidth).toBe(1.123);
}
// arc styles
meta.data[0].custom = {
backgroundColor: 'rgb(0, 1, 3)',
borderColor: 'rgb(4, 6, 8)',
borderWidth: 0.787
};
chart.update();
expect(meta.data[0]._model.x).toBeCloseToPixel(256);
expect(meta.data[0]._model.y).toBeCloseToPixel(272);
expect(meta.data[0]._model.innerRadius).toBeCloseToPixel(0);
expect(meta.data[0]._model.outerRadius).toBeCloseToPixel(156);
expect(meta.data[0]._model).toEqual(jasmine.objectContaining({
startAngle: -0.5 * Math.PI,
endAngle: 0,
backgroundColor: 'rgb(0, 1, 3)',
borderWidth: 0.787,
borderColor: 'rgb(4, 6, 8)',
label: 'label1'
}));
});
it('should handle number of data point changes in update', function() {
var chart = window.acquireChart({
type: 'polarArea',
data: {
datasets: [{
data: [10, 15, 0, -4],
label: 'dataset2'
}],
labels: ['label1', 'label2', 'label3', 'label4']
},
options: {
showLines: true,
elements: {
arc: {
backgroundColor: 'rgb(255, 0, 0)',
borderColor: 'rgb(0, 255, 0)',
borderWidth: 1.2
}
}
}
});
var meta = chart.getDatasetMeta(0);
expect(meta.data.length).toBe(4);
// remove 2 items
chart.data.labels = ['label1', 'label2'];
chart.data.datasets[0].data = [1, 2];
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 3 items
chart.data.labels = ['label1', 'label2', 'label3', 'label4', 'label5'];
chart.data.datasets[0].data = [1, 2, 3, 4, 5];
chart.update();
expect(meta.data.length).toBe(5);
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);
expect(meta.data[4] instanceof Chart.elements.Arc).toBe(true);
});
it('should set arc hover styles', function() {
var chart = window.acquireChart({
type: 'polarArea',
data: {
datasets: [{
data: [10, 15, 0, -4],
label: 'dataset2'
}],
labels: ['label1', 'label2', 'label3', 'label4']
},
options: {
showLines: true,
elements: {
arc: {
backgroundColor: 'rgb(255, 0, 0)',
borderColor: 'rgb(0, 255, 0)',
borderWidth: 1.2
}
}
}
});
var meta = chart.getDatasetMeta(0);
var arc = meta.data[0];
meta.controller.setHoverStyle(arc);
expect(arc._model.backgroundColor).toBe('rgb(230, 0, 0)');
expect(arc._model.borderColor).toBe('rgb(0, 230, 0)');
expect(arc._model.borderWidth).toBe(1.2);
// Can set hover style per dataset
chart.data.datasets[0].hoverBackgroundColor = 'rgb(77, 79, 81)';
chart.data.datasets[0].hoverBorderColor = 'rgb(123, 125, 127)';
chart.data.datasets[0].hoverBorderWidth = 2.1;
meta.controller.setHoverStyle(arc);
expect(arc._model.backgroundColor).toBe('rgb(77, 79, 81)');
expect(arc._model.borderColor).toBe('rgb(123, 125, 127)');
expect(arc._model.borderWidth).toBe(2.1);
// Custom style
arc.custom = {
hoverBorderWidth: 5.5,
hoverBackgroundColor: 'rgb(0, 0, 0)',
hoverBorderColor: 'rgb(10, 10, 10)'
};
meta.controller.setHoverStyle(arc);
expect(arc._model.backgroundColor).toBe('rgb(0, 0, 0)');
expect(arc._model.borderColor).toBe('rgb(10, 10, 10)');
expect(arc._model.borderWidth).toBe(5.5);
});
it('should remove hover styles', function() {
var chart = window.acquireChart({
type: 'polarArea',
data: {
datasets: [{
data: [10, 15, 0, -4],
label: 'dataset2'
}],
labels: ['label1', 'label2', 'label3', 'label4']
},
options: {
showLines: true,
elements: {
arc: {
backgroundColor: 'rgb(255, 0, 0)',
borderColor: 'rgb(0, 255, 0)',
borderWidth: 1.2
}
}
}
});
var meta = chart.getDatasetMeta(0);
var arc = meta.data[0];
chart.options.elements.arc.backgroundColor = 'rgb(45, 46, 47)';
chart.options.elements.arc.borderColor = 'rgb(50, 51, 52)';
chart.options.elements.arc.borderWidth = 10.1;
meta.controller.removeHoverStyle(arc);
expect(arc._model.backgroundColor).toBe('rgb(45, 46, 47)');
expect(arc._model.borderColor).toBe('rgb(50, 51, 52)');
expect(arc._model.borderWidth).toBe(10.1);
// Can set hover style per dataset
chart.data.datasets[0].backgroundColor = 'rgb(77, 79, 81)';
chart.data.datasets[0].borderColor = 'rgb(123, 125, 127)';
chart.data.datasets[0].borderWidth = 2.1;
meta.controller.removeHoverStyle(arc);
expect(arc._model.backgroundColor).toBe('rgb(77, 79, 81)');
expect(arc._model.borderColor).toBe('rgb(123, 125, 127)');
expect(arc._model.borderWidth).toBe(2.1);
// Custom style
arc.custom = {
borderWidth: 5.5,
backgroundColor: 'rgb(0, 0, 0)',
borderColor: 'rgb(10, 10, 10)'
};
meta.controller.removeHoverStyle(arc);
expect(arc._model.backgroundColor).toBe('rgb(0, 0, 0)');
expect(arc._model.borderColor).toBe('rgb(10, 10, 10)');
expect(arc._model.borderWidth).toBe(5.5);
});
});
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