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// Test the rectangle element
describe('Arc element tests', function() {
it ('Should be constructed', function() {
var arc = new Chart.elements.Arc({
_datasetIndex: 2,
_index: 1
});
expect(arc).not.toBe(undefined);
expect(arc._datasetIndex).toBe(2);
expect(arc._index).toBe(1);
});
it ('should determine if in range', function() {
var arc = new Chart.elements.Arc({
_datasetIndex: 2,
_index: 1
});
// Make sure we can run these before the view is added
expect(arc.inRange(2, 2)).toBe(false);
expect(arc.inLabelRange(2)).toBe(false);
// Mock out the view as if the controller put it there
arc._view = {
startAngle: 0,
endAngle: Math.PI / 2,
x: 0,
y: 0,
innerRadius: 5,
outerRadius: 10,
};
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 get the tooltip position', function() {
var arc = new Chart.elements.Arc({
_datasetIndex: 2,
_index: 1
});
// Mock out the view as if the controller put it there
arc._view = {
startAngle: 0,
endAngle: Math.PI / 2,
x: 0,
y: 0,
innerRadius: 0,
outerRadius: Math.sqrt(2),
};
var pos = arc.tooltipPosition();
expect(pos.x).toBeCloseTo(0.5);
expect(pos.y).toBeCloseTo(0.5);
});
it ('should get the area', function() {
var arc = new Chart.elements.Arc({
_datasetIndex: 2,
_index: 1
});
// Mock out the view as if the controller put it there
arc._view = {
startAngle: 0,
endAngle: Math.PI / 2,
x: 0,
y: 0,
innerRadius: 0,
outerRadius: Math.sqrt(2),
};
expect(arc.getArea()).toBeCloseTo(0.5 * Math.PI, 6);
});
it ('should get the center', function() {
var arc = new Chart.elements.Arc({
_datasetIndex: 2,
_index: 1
});
// Mock out the view as if the controller put it there
arc._view = {
startAngle: 0,
endAngle: Math.PI / 2,
x: 0,
y: 0,
innerRadius: 0,
outerRadius: Math.sqrt(2),
};
var center = arc.getCenterPoint();
expect(center.x).toBeCloseTo(0.5, 6);
expect(center.y).toBeCloseTo(0.5, 6);
});
});
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