forked from chartjs/Chart.js
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element.arc.tests.js
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/
element.arc.tests.js
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// Test the rectangle element
describe('Arc element tests', function() {
it ('should determine if in range', function() {
// Mock out the arc as if the controller put it there
var arc = new Chart.elements.ArcElement({
startAngle: 0,
endAngle: Math.PI / 2,
x: 0,
y: 0,
innerRadius: 5,
outerRadius: 10,
options: {
spacing: 0,
offset: 0,
}
});
expect(arc.inRange(2, 2)).toBe(false);
expect(arc.inRange(7, 0)).toBe(true);
expect(arc.inRange(0, 11)).toBe(false);
expect(arc.inRange(Math.sqrt(32), Math.sqrt(32))).toBe(true);
expect(arc.inRange(-1.0 * Math.sqrt(7), Math.sqrt(7))).toBe(false);
});
it ('should determine if in range when full circle', function() {
// Mock out the arc as if the controller put it there
var arc = new Chart.elements.ArcElement({
startAngle: 0,
endAngle: Math.PI * 2,
x: 0,
y: 0,
innerRadius: 5,
outerRadius: 10,
options: {
spacing: 0,
offset: 0,
}
});
for (const radius of [5, 7.5, 10]) {
for (let angle = 0; angle <= 360; angle += 22.5) {
const rad = angle / 180 * Math.PI;
const x = Math.sin(rad) * radius;
const y = Math.cos(rad) * radius;
expect(arc.inRange(x, y)).withContext(`radius: ${radius}, angle: ${angle}`).toBeTrue();
}
}
for (const radius of [4, 11]) {
for (let angle = 0; angle <= 360; angle += 22.5) {
const rad = angle / 180 * Math.PI;
const x = Math.sin(rad) * radius;
const y = Math.cos(rad) * radius;
expect(arc.inRange(x, y)).withContext(`radius: ${radius}, angle: ${angle}`).toBeFalse();
}
}
});
it ('should include spacing for in range check', function() {
// Mock out the arc as if the controller put it there
var arc = new Chart.elements.ArcElement({
startAngle: 0,
endAngle: Math.PI / 2,
x: 0,
y: 0,
innerRadius: 5,
outerRadius: 10,
options: {
spacing: 10,
offset: 0,
}
});
expect(arc.inRange(7, 0)).toBe(false);
expect(arc.inRange(15, 0)).toBe(true);
});
it ('should determine if in range, when full circle', function() {
// Mock out the arc as if the controller put it there
var arc = new Chart.elements.ArcElement({
startAngle: -Math.PI,
endAngle: Math.PI * 1.5,
x: 0,
y: 0,
innerRadius: 0,
outerRadius: 10,
circumference: Math.PI * 2,
options: {
spacing: 0,
offset: 0,
}
});
expect(arc.inRange(7, 7)).toBe(true);
});
it ('should get the tooltip position', function() {
// Mock out the arc as if the controller put it there
var arc = new Chart.elements.ArcElement({
startAngle: 0,
endAngle: Math.PI / 2,
x: 0,
y: 0,
innerRadius: 0,
outerRadius: Math.sqrt(2),
options: {
spacing: 0,
offset: 0,
}
});
var pos = arc.tooltipPosition();
expect(pos.x).toBeCloseTo(0.5);
expect(pos.y).toBeCloseTo(0.5);
});
it ('should get the center', function() {
// Mock out the arc as if the controller put it there
var arc = new Chart.elements.ArcElement({
startAngle: 0,
endAngle: Math.PI / 2,
x: 0,
y: 0,
innerRadius: 0,
outerRadius: Math.sqrt(2),
options: {
spacing: 0,
offset: 0,
}
});
var center = arc.getCenterPoint();
expect(center.x).toBeCloseTo(0.5, 6);
expect(center.y).toBeCloseTo(0.5, 6);
});
it ('should get the center with offset and spacing', function() {
// Mock out the arc as if the controller put it there
var arc = new Chart.elements.ArcElement({
startAngle: 0,
endAngle: Math.PI / 2,
x: 0,
y: 0,
innerRadius: 0,
outerRadius: Math.sqrt(2),
options: {
spacing: 10,
offset: 10,
}
});
var center = arc.getCenterPoint();
expect(center.x).toBeCloseTo(7.57, 1);
expect(center.y).toBeCloseTo(7.57, 1);
});
it ('should get the center of full circle before and after draw', function() {
// Mock out the arc as if the controller put it there
var arc = new Chart.elements.ArcElement({
startAngle: 0,
endAngle: Math.PI * 2,
x: 2,
y: 2,
innerRadius: 0,
outerRadius: 2,
options: {
spacing: 0,
offset: 0,
}
});
var center = arc.getCenterPoint();
expect(center.x).toBeCloseTo(1, 6);
expect(center.y).toBeCloseTo(2, 6);
var ctx = window.createMockContext();
arc.draw(ctx);
center = arc.getCenterPoint();
expect(center.x).toBeCloseTo(1, 6);
expect(center.y).toBeCloseTo(2, 6);
});
it('should not draw when radius < 0', function() {
var ctx = window.createMockContext();
var arc = new Chart.elements.ArcElement({
startAngle: 0,
endAngle: Math.PI / 2,
x: 0,
y: 0,
innerRadius: -0.1,
outerRadius: Math.sqrt(2),
options: {
spacing: 0,
offset: 0,
}
});
arc.draw(ctx);
expect(ctx.getCalls().length).toBe(0);
arc = new Chart.elements.ArcElement({
startAngle: 0,
endAngle: Math.PI / 2,
x: 0,
y: 0,
innerRadius: 0,
outerRadius: -1,
options: {
spacing: 0,
offset: 0,
}
});
arc.draw(ctx);
expect(ctx.getCalls().length).toBe(0);
});
it('should draw when circular: false', function() {
var arc = new Chart.elements.ArcElement({
startAngle: 0,
endAngle: Math.PI * 2,
x: 2,
y: 2,
innerRadius: 0,
outerRadius: 2,
options: {
spacing: 0,
offset: 0,
scales: {
r: {
grid: {
circular: false,
},
},
},
elements: {
arc: {
circular: false
},
},
}
});
var ctx = window.createMockContext();
arc.draw(ctx);
expect(ctx.getCalls().length).toBeGreaterThan(0);
});
});