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Viewing file:     element.line.tests.js (35.5 KB)      -rw-r--r--

// Tests for the line element
describe('Chart.elements.Line', function() {
	it('should be constructed', function() {
		var line = new Chart.elements.Line({
			_datasetindex: 2,
			_points: [1, 2, 3, 4]
		});

		expect(line).not.toBe(undefined);
		expect(line._datasetindex).toBe(2);
		expect(line._points).toEqual([1, 2, 3, 4]);
	});

	it('should draw with default settings', function() {
		var mockContext = window.createMockContext();

		// Create our points
		var points = [];
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 0,
			_view: {
				x: 0,
				y: 10,
				controlPointNextX: 0,
				controlPointNextY: 10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 1,
			_view: {
				x: 5,
				y: 0,
				controlPointPreviousX: 5,
				controlPointPreviousY: 0,
				controlPointNextX: 5,
				controlPointNextY: 0
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 2,
			_view: {
				x: 15,
				y: -10,
				controlPointPreviousX: 15,
				controlPointPreviousY: -10,
				controlPointNextX: 15,
				controlPointNextY: -10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 3,
			_view: {
				x: 19,
				y: -5,
				controlPointPreviousX: 19,
				controlPointPreviousY: -5,
				controlPointNextX: 19,
				controlPointNextY: -5
			}
		}));

		var line = new Chart.elements.Line({
			_datasetindex: 2,
			_chart: {
				ctx: mockContext,
			},
			_children: points,
			// Need to provide some settings
			_view: {
				fill: false, // don't want to fill
				tension: 0, // no bezier curve for now
			}
		});

		line.draw();

		expect(mockContext.getCalls()).toEqual([{
			name: 'save',
			args: [],
		}, {
			name: 'setLineCap',
			args: ['butt']
		}, {
			name: 'setLineDash',
			args: [
				[]
			]
		}, {
			name: 'setLineDashOffset',
			args: [0.0]
		}, {
			name: 'setLineJoin',
			args: ['miter']
		}, {
			name: 'setLineWidth',
			args: [3]
		}, {
			name: 'setStrokeStyle',
			args: ['rgba(0,0,0,0.1)']
		}, {
			name: 'beginPath',
			args: []
		}, {
			name: 'moveTo',
			args: [0, 10]
		}, {
			name: 'lineTo',
			args: [5, 0]
		}, {
			name: 'lineTo',
			args: [15, -10]
		}, {
			name: 'lineTo',
			args: [19, -5]
		}, {
			name: 'stroke',
			args: [],
		}, {
			name: 'restore',
			args: []
		}]);
	});

	it('should draw with straight lines for a tension of 0', function() {
		var mockContext = window.createMockContext();

		// Create our points
		var points = [];
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 0,
			_view: {
				x: 0,
				y: 10,
				controlPointNextX: 0,
				controlPointNextY: 10,
				tension: 0
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 1,
			_view: {
				x: 5,
				y: 0,
				controlPointPreviousX: 5,
				controlPointPreviousY: 0,
				controlPointNextX: 5,
				controlPointNextY: 0,
				tension: 0
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 2,
			_view: {
				x: 15,
				y: -10,
				controlPointPreviousX: 15,
				controlPointPreviousY: -10,
				controlPointNextX: 15,
				controlPointNextY: -10,
				tension: 0
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 3,
			_view: {
				x: 19,
				y: -5,
				controlPointPreviousX: 19,
				controlPointPreviousY: -5,
				controlPointNextX: 19,
				controlPointNextY: -5,
				tension: 0
			}
		}));

		var line = new Chart.elements.Line({
			_datasetindex: 2,
			_chart: {
				ctx: mockContext,
			},
			_children: points,
			// Need to provide some settings
			_view: {
				fill: false, // don't want to fill
				tension: 0, // no bezier curve for now
			}
		});

		line.draw();

		expect(mockContext.getCalls()).toEqual([{
			name: 'save',
			args: [],
		}, {
			name: 'setLineCap',
			args: ['butt']
		}, {
			name: 'setLineDash',
			args: [
				[]
			]
		}, {
			name: 'setLineDashOffset',
			args: [0.0]
		}, {
			name: 'setLineJoin',
			args: ['miter']
		}, {
			name: 'setLineWidth',
			args: [3]
		}, {
			name: 'setStrokeStyle',
			args: ['rgba(0,0,0,0.1)']
		}, {
			name: 'beginPath',
			args: []
		}, {
			name: 'moveTo',
			args: [0, 10]
		}, {
			name: 'lineTo',
			args: [5, 0]
		}, {
			name: 'lineTo',
			args: [15, -10]
		}, {
			name: 'lineTo',
			args: [19, -5]
		}, {
			name: 'stroke',
			args: [],
		}, {
			name: 'restore',
			args: []
		}]);
	});

	it('should draw stepped lines, with "before" interpolation', function() {

		// Both `true` and `'before'` should draw the same steppedLine
		var beforeInterpolations = [true, 'before'];

		beforeInterpolations.forEach(function(mode) {
			var mockContext = window.createMockContext();

			// Create our points
			var points = [];
			points.push(new Chart.elements.Point({
				_datasetindex: 2,
				_index: 0,
				_view: {
					x: 0,
					y: 10,
					controlPointNextX: 0,
					controlPointNextY: 10,
					steppedLine: mode
				}
			}));
			points.push(new Chart.elements.Point({
				_datasetindex: 2,
				_index: 1,
				_view: {
					x: 5,
					y: 0,
					controlPointPreviousX: 5,
					controlPointPreviousY: 0,
					controlPointNextX: 5,
					controlPointNextY: 0,
					steppedLine: mode
				}
			}));
			points.push(new Chart.elements.Point({
				_datasetindex: 2,
				_index: 2,
				_view: {
					x: 15,
					y: -10,
					controlPointPreviousX: 15,
					controlPointPreviousY: -10,
					controlPointNextX: 15,
					controlPointNextY: -10,
					steppedLine: mode
				}
			}));
			points.push(new Chart.elements.Point({
				_datasetindex: 2,
				_index: 3,
				_view: {
					x: 19,
					y: -5,
					controlPointPreviousX: 19,
					controlPointPreviousY: -5,
					controlPointNextX: 19,
					controlPointNextY: -5,
					steppedLine: mode
				}
			}));

			var line = new Chart.elements.Line({
				_datasetindex: 2,
				_chart: {
					ctx: mockContext,
				},
				_children: points,
				// Need to provide some settings
				_view: {
					fill: false, // don't want to fill
					tension: 0, // no bezier curve for now
				}
			});

			line.draw();

			expect(mockContext.getCalls()).toEqual([{
				name: 'save',
				args: [],
			}, {
				name: 'setLineCap',
				args: ['butt']
			}, {
				name: 'setLineDash',
				args: [
					[]
				]
			}, {
				name: 'setLineDashOffset',
				args: [0.0]
			}, {
				name: 'setLineJoin',
				args: ['miter']
			}, {
				name: 'setLineWidth',
				args: [3]
			}, {
				name: 'setStrokeStyle',
				args: ['rgba(0,0,0,0.1)']
			}, {
				name: 'beginPath',
				args: []
			}, {
				name: 'moveTo',
				args: [0, 10]
			}, {
				name: 'lineTo',
				args: [5, 10]
			}, {
				name: 'lineTo',
				args: [5, 0]
			}, {
				name: 'lineTo',
				args: [15, 0]
			}, {
				name: 'lineTo',
				args: [15, -10]
			}, {
				name: 'lineTo',
				args: [19, -10]
			}, {
				name: 'lineTo',
				args: [19, -5]
			}, {
				name: 'stroke',
				args: [],
			}, {
				name: 'restore',
				args: []
			}]);
		});
	});

	it('should draw stepped lines, with "after" interpolation', function() {

		var mockContext = window.createMockContext();

		// Create our points
		var points = [];
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 0,
			_view: {
				x: 0,
				y: 10,
				controlPointNextX: 0,
				controlPointNextY: 10,
				steppedLine: 'after'
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 1,
			_view: {
				x: 5,
				y: 0,
				controlPointPreviousX: 5,
				controlPointPreviousY: 0,
				controlPointNextX: 5,
				controlPointNextY: 0,
				steppedLine: 'after'
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 2,
			_view: {
				x: 15,
				y: -10,
				controlPointPreviousX: 15,
				controlPointPreviousY: -10,
				controlPointNextX: 15,
				controlPointNextY: -10,
				steppedLine: 'after'
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 3,
			_view: {
				x: 19,
				y: -5,
				controlPointPreviousX: 19,
				controlPointPreviousY: -5,
				controlPointNextX: 19,
				controlPointNextY: -5,
				steppedLine: 'after'
			}
		}));

		var line = new Chart.elements.Line({
			_datasetindex: 2,
			_chart: {
				ctx: mockContext,
			},
			_children: points,
			// Need to provide some settings
			_view: {
				fill: false, // don't want to fill
				tension: 0, // no bezier curve for now
			}
		});

		line.draw();

		expect(mockContext.getCalls()).toEqual([{
			name: 'save',
			args: [],
		}, {
			name: 'setLineCap',
			args: ['butt']
		}, {
			name: 'setLineDash',
			args: [
				[]
			]
		}, {
			name: 'setLineDashOffset',
			args: [0.0]
		}, {
			name: 'setLineJoin',
			args: ['miter']
		}, {
			name: 'setLineWidth',
			args: [3]
		}, {
			name: 'setStrokeStyle',
			args: ['rgba(0,0,0,0.1)']
		}, {
			name: 'beginPath',
			args: []
		}, {
			name: 'moveTo',
			args: [0, 10]
		}, {
			name: 'lineTo',
			args: [0, 0]
		}, {
			name: 'lineTo',
			args: [5, 0]
		}, {
			name: 'lineTo',
			args: [5, -10]
		}, {
			name: 'lineTo',
			args: [15, -10]
		}, {
			name: 'lineTo',
			args: [15, -5]
		}, {
			name: 'lineTo',
			args: [19, -5]
		}, {
			name: 'stroke',
			args: [],
		}, {
			name: 'restore',
			args: []
		}]);
	});

	it('should draw with custom settings', function() {
		var mockContext = window.createMockContext();

		// Create our points
		var points = [];
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 0,
			_view: {
				x: 0,
				y: 10,
				controlPointNextX: 0,
				controlPointNextY: 10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 1,
			_view: {
				x: 5,
				y: 0,
				controlPointPreviousX: 5,
				controlPointPreviousY: 0,
				controlPointNextX: 5,
				controlPointNextY: 0
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 2,
			_view: {
				x: 15,
				y: -10,
				controlPointPreviousX: 15,
				controlPointPreviousY: -10,
				controlPointNextX: 15,
				controlPointNextY: -10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 3,
			_view: {
				x: 19,
				y: -5,
				controlPointPreviousX: 19,
				controlPointPreviousY: -5,
				controlPointNextX: 19,
				controlPointNextY: -5
			}
		}));

		var line = new Chart.elements.Line({
			_datasetindex: 2,
			_chart: {
				ctx: mockContext,
			},
			_children: points,
			// Need to provide some settings
			_view: {
				fill: true,
				tension: 0, // no bezier curve for now

				borderCapStyle: 'round',
				borderColor: 'rgb(255, 255, 0)',
				borderDash: [2, 2],
				borderDashOffset: 1.5,
				borderJoinStyle: 'bevel',
				borderWidth: 4,
				backgroundColor: 'rgb(0, 0, 0)'
			}
		});

		line.draw();

		var expected = [{
			name: 'save',
			args: []
		}, {
			name: 'setLineCap',
			args: ['round']
		}, {
			name: 'setLineDash',
			args: [
				[2, 2]
			]
		}, {
			name: 'setLineDashOffset',
			args: [1.5]
		}, {
			name: 'setLineJoin',
			args: ['bevel']
		}, {
			name: 'setLineWidth',
			args: [4]
		}, {
			name: 'setStrokeStyle',
			args: ['rgb(255, 255, 0)']
		}, {
			name: 'beginPath',
			args: []
		}, {
			name: 'moveTo',
			args: [0, 10]
		}, {
			name: 'lineTo',
			args: [5, 0]
		}, {
			name: 'lineTo',
			args: [15, -10]
		}, {
			name: 'lineTo',
			args: [19, -5]
		}, {
			name: 'stroke',
			args: []
		}, {
			name: 'restore',
			args: []
		}];
		expect(mockContext.getCalls()).toEqual(expected);
	});

	it('should skip points correctly', function() {
		var mockContext = window.createMockContext();

		// Create our points
		var points = [];
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 0,
			_view: {
				x: 0,
				y: 10,
				controlPointNextX: 0,
				controlPointNextY: 10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 1,
			_view: {
				x: 5,
				y: 0,
				controlPointPreviousX: 5,
				controlPointPreviousY: 0,
				controlPointNextX: 5,
				controlPointNextY: 0
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 2,
			_view: {
				x: 15,
				y: -10,
				controlPointPreviousX: 15,
				controlPointPreviousY: -10,
				controlPointNextX: 15,
				controlPointNextY: -10,
				skip: true
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 3,
			_view: {
				x: 19,
				y: -5,
				controlPointPreviousX: 19,
				controlPointPreviousY: -5,
				controlPointNextX: 19,
				controlPointNextY: -5
			}
		}));

		var line = new Chart.elements.Line({
			_datasetindex: 2,
			_chart: {
				ctx: mockContext,
			},
			_children: points,
			// Need to provide some settings
			_view: {
				fill: true,
				tension: 0, // no bezier curve for now
			}
		});

		line.draw();

		var expected = [{
			name: 'save',
			args: []
		}, {
			name: 'setLineCap',
			args: ['butt']
		}, {
			name: 'setLineDash',
			args: [
				[]
			]
		}, {
			name: 'setLineDashOffset',
			args: [0]
		}, {
			name: 'setLineJoin',
			args: ['miter']
		}, {
			name: 'setLineWidth',
			args: [3]
		}, {
			name: 'setStrokeStyle',
			args: ['rgba(0,0,0,0.1)']
		}, {
			name: 'beginPath',
			args: []
		}, {
			name: 'moveTo',
			args: [0, 10]
		}, {
			name: 'lineTo',
			args: [5, 0]
		}, {
			name: 'moveTo',
			args: [19, -5]
		}, {
			name: 'stroke',
			args: []
		}, {
			name: 'restore',
			args: []
		}];
		expect(mockContext.getCalls()).toEqual(expected);
	});

	it('should skip points correctly when spanGaps is true', function() {
		var mockContext = window.createMockContext();

		// Create our points
		var points = [];
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 0,
			_view: {
				x: 0,
				y: 10,
				controlPointNextX: 0,
				controlPointNextY: 10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 1,
			_view: {
				x: 5,
				y: 0,
				controlPointPreviousX: 5,
				controlPointPreviousY: 0,
				controlPointNextX: 5,
				controlPointNextY: 0
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 2,
			_view: {
				x: 15,
				y: -10,
				controlPointPreviousX: 15,
				controlPointPreviousY: -10,
				controlPointNextX: 15,
				controlPointNextY: -10,
				skip: true
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 3,
			_view: {
				x: 19,
				y: -5,
				controlPointPreviousX: 19,
				controlPointPreviousY: -5,
				controlPointNextX: 19,
				controlPointNextY: -5
			}
		}));

		var line = new Chart.elements.Line({
			_datasetindex: 2,
			_chart: {
				ctx: mockContext,
			},
			_children: points,
			// Need to provide some settings
			_view: {
				fill: true,
				tension: 0, // no bezier curve for now
				spanGaps: true
			}
		});

		line.draw();

		var expected = [{
			name: 'save',
			args: []
		}, {
			name: 'setLineCap',
			args: ['butt']
		}, {
			name: 'setLineDash',
			args: [
				[]
			]
		}, {
			name: 'setLineDashOffset',
			args: [0]
		}, {
			name: 'setLineJoin',
			args: ['miter']
		}, {
			name: 'setLineWidth',
			args: [3]
		}, {
			name: 'setStrokeStyle',
			args: ['rgba(0,0,0,0.1)']
		}, {
			name: 'beginPath',
			args: []
		}, {
			name: 'moveTo',
			args: [0, 10]
		}, {
			name: 'lineTo',
			args: [5, 0]
		}, {
			name: 'lineTo',
			args: [19, -5]
		}, {
			name: 'stroke',
			args: []
		}, {
			name: 'restore',
			args: []
		}];
		expect(mockContext.getCalls()).toEqual(expected);
	});

	it('should skip points correctly when all points are skipped', function() {
		var mockContext = window.createMockContext();

		// Create our points
		var points = [];
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 0,
			_view: {
				x: 0,
				y: 10,
				controlPointNextX: 0,
				controlPointNextY: 10,
				skip: true
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 1,
			_view: {
				x: 5,
				y: 0,
				controlPointPreviousX: 5,
				controlPointPreviousY: 0,
				controlPointNextX: 5,
				controlPointNextY: 0,
				skip: true
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 2,
			_view: {
				x: 15,
				y: -10,
				controlPointPreviousX: 15,
				controlPointPreviousY: -10,
				controlPointNextX: 15,
				controlPointNextY: -10,
				skip: true
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 3,
			_view: {
				x: 19,
				y: -5,
				controlPointPreviousX: 19,
				controlPointPreviousY: -5,
				controlPointNextX: 19,
				controlPointNextY: -5,
				skip: true
			}
		}));

		var line = new Chart.elements.Line({
			_datasetindex: 2,
			_chart: {
				ctx: mockContext,
			},
			_children: points,
			// Need to provide some settings
			_view: {
				fill: true,
				tension: 0, // no bezier curve for now
				spanGaps: true
			}
		});

		line.draw();

		var expected = [{
			name: 'save',
			args: []
		}, {
			name: 'setLineCap',
			args: ['butt']
		}, {
			name: 'setLineDash',
			args: [
				[]
			]
		}, {
			name: 'setLineDashOffset',
			args: [0]
		}, {
			name: 'setLineJoin',
			args: ['miter']
		}, {
			name: 'setLineWidth',
			args: [3]
		}, {
			name: 'setStrokeStyle',
			args: ['rgba(0,0,0,0.1)']
		}, {
			name: 'beginPath',
			args: []
		}, {
			name: 'stroke',
			args: []
		}, {
			name: 'restore',
			args: []
		}];
		expect(mockContext.getCalls()).toEqual(expected);
	});

	it('should skip the first point correctly', function() {
		var mockContext = window.createMockContext();

		// Create our points
		var points = [];
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 0,
			_view: {
				x: 0,
				y: 10,
				controlPointNextX: 0,
				controlPointNextY: 10,
				skip: true
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 1,
			_view: {
				x: 5,
				y: 0,
				controlPointPreviousX: 5,
				controlPointPreviousY: 0,
				controlPointNextX: 5,
				controlPointNextY: 0
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 2,
			_view: {
				x: 15,
				y: -10,
				controlPointPreviousX: 15,
				controlPointPreviousY: -10,
				controlPointNextX: 15,
				controlPointNextY: -10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 3,
			_view: {
				x: 19,
				y: -5,
				controlPointPreviousX: 19,
				controlPointPreviousY: -5,
				controlPointNextX: 19,
				controlPointNextY: -5
			}
		}));

		var line = new Chart.elements.Line({
			_datasetindex: 2,
			_chart: {
				ctx: mockContext,
			},
			_children: points,
			// Need to provide some settings
			_view: {
				fill: true,
				tension: 0, // no bezier curve for now
			}
		});

		line.draw();

		var expected = [{
			name: 'save',
			args: []
		}, {
			name: 'setLineCap',
			args: ['butt']
		}, {
			name: 'setLineDash',
			args: [
				[]
			]
		}, {
			name: 'setLineDashOffset',
			args: [0]
		}, {
			name: 'setLineJoin',
			args: ['miter']
		}, {
			name: 'setLineWidth',
			args: [3]
		}, {
			name: 'setStrokeStyle',
			args: ['rgba(0,0,0,0.1)']
		}, {
			name: 'beginPath',
			args: []
		}, {
			name: 'moveTo',
			args: [5, 0]
		}, {
			name: 'lineTo',
			args: [15, -10]
		}, {
			name: 'lineTo',
			args: [19, -5]
		}, {
			name: 'stroke',
			args: []
		}, {
			name: 'restore',
			args: []
		}];
		expect(mockContext.getCalls()).toEqual(expected);
	});

	it('should skip the first point correctly when spanGaps is true', function() {
		var mockContext = window.createMockContext();

		// Create our points
		var points = [];
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 0,
			_view: {
				x: 0,
				y: 10,
				controlPointNextX: 0,
				controlPointNextY: 10,
				skip: true
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 1,
			_view: {
				x: 5,
				y: 0,
				controlPointPreviousX: 5,
				controlPointPreviousY: 0,
				controlPointNextX: 5,
				controlPointNextY: 0
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 2,
			_view: {
				x: 15,
				y: -10,
				controlPointPreviousX: 15,
				controlPointPreviousY: -10,
				controlPointNextX: 15,
				controlPointNextY: -10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 3,
			_view: {
				x: 19,
				y: -5,
				controlPointPreviousX: 19,
				controlPointPreviousY: -5,
				controlPointNextX: 19,
				controlPointNextY: -5
			}
		}));

		var line = new Chart.elements.Line({
			_datasetindex: 2,
			_chart: {
				ctx: mockContext,
			},
			_children: points,
			// Need to provide some settings
			_view: {
				fill: true,
				tension: 0, // no bezier curve for now
				spanGaps: true
			}
		});

		line.draw();

		var expected = [{
			name: 'save',
			args: []
		}, {
			name: 'setLineCap',
			args: ['butt']
		}, {
			name: 'setLineDash',
			args: [
				[]
			]
		}, {
			name: 'setLineDashOffset',
			args: [0]
		}, {
			name: 'setLineJoin',
			args: ['miter']
		}, {
			name: 'setLineWidth',
			args: [3]
		}, {
			name: 'setStrokeStyle',
			args: ['rgba(0,0,0,0.1)']
		}, {
			name: 'beginPath',
			args: []
		}, {
			name: 'moveTo',
			args: [5, 0]
		}, {
			name: 'lineTo',
			args: [15, -10]
		}, {
			name: 'lineTo',
			args: [19, -5]
		}, {
			name: 'stroke',
			args: []
		}, {
			name: 'restore',
			args: []
		}];
		expect(mockContext.getCalls()).toEqual(expected);
	});

	it('should skip the last point correctly', function() {
		var mockContext = window.createMockContext();

		// Create our points
		var points = [];
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 0,
			_view: {
				x: 0,
				y: 10,
				controlPointNextX: 0,
				controlPointNextY: 10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 1,
			_view: {
				x: 5,
				y: 0,
				controlPointPreviousX: 5,
				controlPointPreviousY: 0,
				controlPointNextX: 5,
				controlPointNextY: 0
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 2,
			_view: {
				x: 15,
				y: -10,
				controlPointPreviousX: 15,
				controlPointPreviousY: -10,
				controlPointNextX: 15,
				controlPointNextY: -10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 3,
			_view: {
				x: 19,
				y: -5,
				controlPointPreviousX: 19,
				controlPointPreviousY: -5,
				controlPointNextX: 19,
				controlPointNextY: -5,
				skip: true
			}
		}));

		var line = new Chart.elements.Line({
			_datasetindex: 2,
			_chart: {
				ctx: mockContext,
			},
			_children: points,
			// Need to provide some settings
			_view: {
				fill: true,
				tension: 0, // no bezier curve for now
			}
		});

		line.draw();

		var expected = [{
			name: 'save',
			args: []
		}, {
			name: 'setLineCap',
			args: ['butt']
		}, {
			name: 'setLineDash',
			args: [
				[]
			]
		}, {
			name: 'setLineDashOffset',
			args: [0]
		}, {
			name: 'setLineJoin',
			args: ['miter']
		}, {
			name: 'setLineWidth',
			args: [3]
		}, {
			name: 'setStrokeStyle',
			args: ['rgba(0,0,0,0.1)']
		}, {
			name: 'beginPath',
			args: []
		}, {
			name: 'moveTo',
			args: [0, 10]
		}, {
			name: 'lineTo',
			args: [5, 0]
		}, {
			name: 'lineTo',
			args: [15, -10]
		}, {
			name: 'stroke',
			args: []
		}, {
			name: 'restore',
			args: []
		}];
		expect(mockContext.getCalls()).toEqual(expected);
	});

	it('should skip the last point correctly when spanGaps is true', function() {
		var mockContext = window.createMockContext();

		// Create our points
		var points = [];
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 0,
			_view: {
				x: 0,
				y: 10,
				controlPointNextX: 0,
				controlPointNextY: 10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 1,
			_view: {
				x: 5,
				y: 0,
				controlPointPreviousX: 5,
				controlPointPreviousY: 0,
				controlPointNextX: 5,
				controlPointNextY: 0
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 2,
			_view: {
				x: 15,
				y: -10,
				controlPointPreviousX: 15,
				controlPointPreviousY: -10,
				controlPointNextX: 15,
				controlPointNextY: -10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 3,
			_view: {
				x: 19,
				y: -5,
				controlPointPreviousX: 19,
				controlPointPreviousY: -5,
				controlPointNextX: 19,
				controlPointNextY: -5,
				skip: true
			}
		}));

		var line = new Chart.elements.Line({
			_datasetindex: 2,
			_chart: {
				ctx: mockContext,
			},
			_children: points,
			// Need to provide some settings
			_view: {
				fill: true,
				tension: 0, // no bezier curve for now
				spanGaps: true
			}
		});

		line.draw();

		var expected = [{
			name: 'save',
			args: []
		}, {
			name: 'setLineCap',
			args: ['butt']
		}, {
			name: 'setLineDash',
			args: [
				[]
			]
		}, {
			name: 'setLineDashOffset',
			args: [0]
		}, {
			name: 'setLineJoin',
			args: ['miter']
		}, {
			name: 'setLineWidth',
			args: [3]
		}, {
			name: 'setStrokeStyle',
			args: ['rgba(0,0,0,0.1)']
		}, {
			name: 'beginPath',
			args: []
		}, {
			name: 'moveTo',
			args: [0, 10]
		}, {
			name: 'lineTo',
			args: [5, 0]
		}, {
			name: 'lineTo',
			args: [15, -10]
		}, {
			name: 'stroke',
			args: []
		}, {
			name: 'restore',
			args: []
		}];
		expect(mockContext.getCalls()).toEqual(expected);
	});

	it('should be able to draw with a loop back to the beginning point', function() {
		var mockContext = window.createMockContext();

		// Create our points
		var points = [];
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 0,
			_view: {
				x: 0,
				y: 10,
				controlPointPreviousX: 0,
				controlPointPreviousY: 10,
				controlPointNextX: 0,
				controlPointNextY: 10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 1,
			_view: {
				x: 5,
				y: 0,
				controlPointPreviousX: 5,
				controlPointPreviousY: 0,
				controlPointNextX: 5,
				controlPointNextY: 0
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 2,
			_view: {
				x: 15,
				y: -10,
				controlPointPreviousX: 15,
				controlPointPreviousY: -10,
				controlPointNextX: 15,
				controlPointNextY: -10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 3,
			_view: {
				x: 19,
				y: -5,
				controlPointPreviousX: 19,
				controlPointPreviousY: -5,
				controlPointNextX: 19,
				controlPointNextY: -5
			}
		}));

		var line = new Chart.elements.Line({
			_datasetindex: 2,
			_chart: {
				ctx: mockContext,
			},
			_children: points,
			_loop: true, // want the line to loop back to the first point
			// Need to provide some settings
			_view: {
				fill: true, // don't want to fill
				tension: 0, // no bezier curve for now
			}
		});

		line.draw();

		expect(mockContext.getCalls()).toEqual([{
			name: 'save',
			args: [],
		}, {
			name: 'setLineCap',
			args: ['butt']
		}, {
			name: 'setLineDash',
			args: [
				[]
			]
		}, {
			name: 'setLineDashOffset',
			args: [0.0]
		}, {
			name: 'setLineJoin',
			args: ['miter']
		}, {
			name: 'setLineWidth',
			args: [3]
		}, {
			name: 'setStrokeStyle',
			args: ['rgba(0,0,0,0.1)']
		}, {
			name: 'beginPath',
			args: []
		}, {
			name: 'moveTo',
			args: [0, 10]
		}, {
			name: 'lineTo',
			args: [5, 0]
		}, {
			name: 'lineTo',
			args: [15, -10]
		}, {
			name: 'lineTo',
			args: [19, -5]
		}, {
			name: 'lineTo',
			args: [0, 10]
		}, {
			name: 'stroke',
			args: [],
		}, {
			name: 'restore',
			args: []
		}]);
	});

	it('should be able to draw with a loop back to the beginning point when there is a skip in the middle of the dataset', function() {
		var mockContext = window.createMockContext();

		// Create our points
		var points = [];
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 0,
			_view: {
				x: 0,
				y: 10,
				controlPointPreviousX: 0,
				controlPointPreviousY: 10,
				controlPointNextX: 0,
				controlPointNextY: 10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 1,
			_view: {
				x: 5,
				y: 0,
				controlPointPreviousX: 5,
				controlPointPreviousY: 0,
				controlPointNextX: 5,
				controlPointNextY: 0,
				skip: true
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 2,
			_view: {
				x: 15,
				y: -10,
				controlPointPreviousX: 15,
				controlPointPreviousY: -10,
				controlPointNextX: 15,
				controlPointNextY: -10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 3,
			_view: {
				x: 19,
				y: -5,
				controlPointPreviousX: 19,
				controlPointPreviousY: -5,
				controlPointNextX: 19,
				controlPointNextY: -5
			}
		}));

		var line = new Chart.elements.Line({
			_datasetindex: 2,
			_chart: {
				ctx: mockContext,
			},
			_children: points,
			_loop: true, // want the line to loop back to the first point
			// Need to provide some settings
			_view: {
				fill: true, // don't want to fill
				tension: 0, // no bezier curve for now
			}
		});

		line.draw();

		expect(mockContext.getCalls()).toEqual([{
			name: 'save',
			args: [],
		}, {
			name: 'setLineCap',
			args: ['butt']
		}, {
			name: 'setLineDash',
			args: [
				[]
			]
		}, {
			name: 'setLineDashOffset',
			args: [0.0]
		}, {
			name: 'setLineJoin',
			args: ['miter']
		}, {
			name: 'setLineWidth',
			args: [3]
		}, {
			name: 'setStrokeStyle',
			args: ['rgba(0,0,0,0.1)']
		}, {
			name: 'beginPath',
			args: []
		}, {
			name: 'moveTo',
			args: [0, 10]
		}, {
			name: 'moveTo',
			args: [15, -10]
		}, {
			name: 'lineTo',
			args: [19, -5]
		}, {
			name: 'lineTo',
			args: [0, 10]
		}, {
			name: 'stroke',
			args: [],
		}, {
			name: 'restore',
			args: []
		}]);
	});

	it('should be able to draw with a loop back to the beginning point when span gaps is true and there is a skip in the middle of the dataset', function() {
		var mockContext = window.createMockContext();

		// Create our points
		var points = [];
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 0,
			_view: {
				x: 0,
				y: 10,
				controlPointPreviousX: 0,
				controlPointPreviousY: 10,
				controlPointNextX: 0,
				controlPointNextY: 10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 1,
			_view: {
				x: 5,
				y: 0,
				controlPointPreviousX: 5,
				controlPointPreviousY: 0,
				controlPointNextX: 5,
				controlPointNextY: 0,
				skip: true
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 2,
			_view: {
				x: 15,
				y: -10,
				controlPointPreviousX: 15,
				controlPointPreviousY: -10,
				controlPointNextX: 15,
				controlPointNextY: -10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 3,
			_view: {
				x: 19,
				y: -5,
				controlPointPreviousX: 19,
				controlPointPreviousY: -5,
				controlPointNextX: 19,
				controlPointNextY: -5
			}
		}));

		var line = new Chart.elements.Line({
			_datasetindex: 2,
			_chart: {
				ctx: mockContext,
			},
			_children: points,
			_loop: true, // want the line to loop back to the first point
			// Need to provide some settings
			_view: {
				fill: true, // don't want to fill
				tension: 0, // no bezier curve for now
				spanGaps: true
			}
		});

		line.draw();

		expect(mockContext.getCalls()).toEqual([{
			name: 'save',
			args: [],
		}, {
			name: 'setLineCap',
			args: ['butt']
		}, {
			name: 'setLineDash',
			args: [
				[]
			]
		}, {
			name: 'setLineDashOffset',
			args: [0.0]
		}, {
			name: 'setLineJoin',
			args: ['miter']
		}, {
			name: 'setLineWidth',
			args: [3]
		}, {
			name: 'setStrokeStyle',
			args: ['rgba(0,0,0,0.1)']
		}, {
			name: 'beginPath',
			args: []
		}, {
			name: 'moveTo',
			args: [0, 10]
		}, {
			name: 'lineTo',
			args: [15, -10]
		}, {
			name: 'lineTo',
			args: [19, -5]
		}, {
			name: 'lineTo',
			args: [0, 10]
		}, {
			name: 'stroke',
			args: [],
		}, {
			name: 'restore',
			args: []
		}]);
	});

	it('should be able to draw with a loop back to the beginning point when the first point is skipped', function() {
		var mockContext = window.createMockContext();

		// Create our points
		var points = [];
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 0,
			_view: {
				x: 0,
				y: 10,
				controlPointPreviousX: 0,
				controlPointPreviousY: 10,
				controlPointNextX: 0,
				controlPointNextY: 10,
				skip: true
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 1,
			_view: {
				x: 5,
				y: 0,
				controlPointPreviousX: 5,
				controlPointPreviousY: 0,
				controlPointNextX: 5,
				controlPointNextY: 0,
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 2,
			_view: {
				x: 15,
				y: -10,
				controlPointPreviousX: 15,
				controlPointPreviousY: -10,
				controlPointNextX: 15,
				controlPointNextY: -10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 3,
			_view: {
				x: 19,
				y: -5,
				controlPointPreviousX: 19,
				controlPointPreviousY: -5,
				controlPointNextX: 19,
				controlPointNextY: -5
			}
		}));

		var line = new Chart.elements.Line({
			_datasetindex: 2,
			_chart: {
				ctx: mockContext,
			},
			_children: points,
			_loop: true, // want the line to loop back to the first point
			// Need to provide some settings
			_view: {
				fill: true, // don't want to fill
				tension: 0, // no bezier curve for now
			}
		});

		line.draw();

		expect(mockContext.getCalls()).toEqual([{
			name: 'save',
			args: [],
		}, {
			name: 'setLineCap',
			args: ['butt']
		}, {
			name: 'setLineDash',
			args: [
				[]
			]
		}, {
			name: 'setLineDashOffset',
			args: [0.0]
		}, {
			name: 'setLineJoin',
			args: ['miter']
		}, {
			name: 'setLineWidth',
			args: [3]
		}, {
			name: 'setStrokeStyle',
			args: ['rgba(0,0,0,0.1)']
		}, {
			name: 'beginPath',
			args: []
		}, {
			name: 'moveTo',
			args: [5, 0]
		}, {
			name: 'lineTo',
			args: [15, -10]
		}, {
			name: 'lineTo',
			args: [19, -5]
		}, {
			name: 'stroke',
			args: [],
		}, {
			name: 'restore',
			args: []
		}]);
	});

	it('should be able to draw with a loop back to the beginning point when the last point is skipped', function() {
		var mockContext = window.createMockContext();

		// Create our points
		var points = [];
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 0,
			_view: {
				x: 0,
				y: 10,
				controlPointPreviousX: 0,
				controlPointPreviousY: 10,
				controlPointNextX: 0,
				controlPointNextY: 10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 1,
			_view: {
				x: 5,
				y: 0,
				controlPointPreviousX: 5,
				controlPointPreviousY: 0,
				controlPointNextX: 5,
				controlPointNextY: 0,
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 2,
			_view: {
				x: 15,
				y: -10,
				controlPointPreviousX: 15,
				controlPointPreviousY: -10,
				controlPointNextX: 15,
				controlPointNextY: -10
			}
		}));
		points.push(new Chart.elements.Point({
			_datasetindex: 2,
			_index: 3,
			_view: {
				x: 19,
				y: -5,
				controlPointPreviousX: 19,
				controlPointPreviousY: -5,
				controlPointNextX: 19,
				controlPointNextY: -5,
				skip: true
			}
		}));

		var line = new Chart.elements.Line({
			_datasetindex: 2,
			_chart: {
				ctx: mockContext,
			},
			_children: points,
			_loop: true, // want the line to loop back to the first point
			// Need to provide some settings
			_view: {
				fill: true, // don't want to fill
				tension: 0, // no bezier curve for now
			}
		});

		line.draw();

		expect(mockContext.getCalls()).toEqual([{
			name: 'save',
			args: [],
		}, {
			name: 'setLineCap',
			args: ['butt']
		}, {
			name: 'setLineDash',
			args: [
				[]
			]
		}, {
			name: 'setLineDashOffset',
			args: [0.0]
		}, {
			name: 'setLineJoin',
			args: ['miter']
		}, {
			name: 'setLineWidth',
			args: [3]
		}, {
			name: 'setStrokeStyle',
			args: ['rgba(0,0,0,0.1)']
		}, {
			name: 'beginPath',
			args: []
		}, {
			name: 'moveTo',
			args: [0, 10]
		}, {
			name: 'lineTo',
			args: [5, 0]
		}, {
			name: 'lineTo',
			args: [15, -10]
		}, {
			name: 'moveTo',
			args: [0, 10]
		}, {
			name: 'stroke',
			args: [],
		}, {
			name: 'restore',
			args: []
		}]);
	});
});