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vendors/Chart.js/test/element.arc.tests.js

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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 draw correctly with no border', function() {
+		var mockContext = window.createMockContext();
+		var arc = new Chart.elements.Arc({
+			_datasetIndex: 2,
+			_index: 1,
+			_chart: {
+				ctx: mockContext,
+			}
+		});
+
+		// Mock out the view as if the controller put it there
+		arc._view = {
+			startAngle: 0,
+			endAngle: Math.PI / 2,
+			x: 10,
+			y: 5,
+			innerRadius: 1,
+			outerRadius: 3,
+
+			backgroundColor: 'rgb(0, 0, 255)',
+			borderColor: 'rgb(255, 0, 0)',
+		};
+
+		arc.draw();
+
+		expect(mockContext.getCalls()).toEqual([{
+			name: 'beginPath',
+			args: []
+		}, {
+			name: 'arc',
+			args: [10, 5, 3, 0, Math.PI / 2]
+		}, {
+			name: 'arc',
+			args: [10, 5, 1, Math.PI / 2, 0, true]
+		}, {
+			name: 'closePath',
+			args: []
+		}, {
+			name: 'setStrokeStyle',
+			args: ['rgb(255, 0, 0)']
+		}, {
+			name: 'setLineWidth',
+			args: [undefined]
+		}, {
+			name: 'setFillStyle',
+			args: ['rgb(0, 0, 255)']
+		}, {
+			name: 'fill',
+			args: []
+		}, {
+			name: 'setLineJoin',
+			args: ['bevel']
+		}]);
+	});
+
+	it ('should draw correctly with a border', function() {
+		var mockContext = window.createMockContext();
+		var arc = new Chart.elements.Arc({
+			_datasetIndex: 2,
+			_index: 1,
+			_chart: {
+				ctx: mockContext,
+			}
+		});
+
+		// Mock out the view as if the controller put it there
+		arc._view = {
+			startAngle: 0,
+			endAngle: Math.PI / 2,
+			x: 10,
+			y: 5,
+			innerRadius: 1,
+			outerRadius: 3,
+
+			backgroundColor: 'rgb(0, 0, 255)',
+			borderColor: 'rgb(255, 0, 0)',
+			borderWidth: 5
+		};
+
+		arc.draw();
+
+		expect(mockContext.getCalls()).toEqual([{
+			name: 'beginPath',
+			args: []
+		}, {
+			name: 'arc',
+			args: [10, 5, 3, 0, Math.PI / 2]
+		}, {
+			name: 'arc',
+			args: [10, 5, 1, Math.PI / 2, 0, true]
+		}, {
+			name: 'closePath',
+			args: []
+		}, {
+			name: 'setStrokeStyle',
+			args: ['rgb(255, 0, 0)']
+		}, {
+			name: 'setLineWidth',
+			args: [5]
+		}, {
+			name: 'setFillStyle',
+			args: ['rgb(0, 0, 255)']
+		}, {
+			name: 'fill',
+			args: []
+		}, {
+			name: 'setLineJoin',
+			args: ['bevel']
+		}, {
+			name: 'stroke',
+			args: []
+		}]);
+	});
+});