Tests for scriptable borderAlign option

test/fixtures/controller.doughnut/borderAlign/indexable.js

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+module.exports = {
+	config: {
+		type: 'doughnut',
+		data: {
+			labels: [0, 1, 2, 3, 4, 5],
+			datasets: [
+				{
+					// option in dataset
+					data: [0, 2, 4, null, 6, 8],
+					borderAlign: [
+						'center',
+						'inner',
+						'center',
+						'inner',
+						'center',
+						'inner',
+					],
+					borderColor: '#00ff00'
+				},
+				{
+					// option in element (fallback)
+					data: [0, 2, 4, null, 6, 8],
+				}
+			]
+		},
+		options: {
+			legend: false,
+			title: false,
+			elements: {
+				arc: {
+					backgroundColor: 'transparent',
+					borderColor: '#ff0000',
+					borderWidth: 5,
+					borderAlign: [
+						'center',
+						'inner',
+						'center',
+						'inner',
+						'center',
+						'inner',
+					]
+				}
+			},
+		}
+	},
+	options: {
+		canvas: {
+			height: 256,
+			width: 512
+		}
+	}
+};

test/fixtures/controller.doughnut/borderAlign/scriptable.js

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+module.exports = {
+	config: {
+		type: 'doughnut',
+		data: {
+			labels: [0, 1, 2, 3, 4, 5],
+			datasets: [
+				{
+					// option in dataset
+					data: [0, 2, 4, null, 6, 8],
+					borderAlign: function(ctx) {
+						var value = ctx.dataset.data[ctx.dataIndex] || 0;
+						return value > 4 ? 'inner' : 'center';
+					},
+					borderColor: '#0000ff',
+				},
+				{
+					// option in element (fallback)
+					data: [0, 2, 4, null, 6, 8],
+				}
+			]
+		},
+		options: {
+			legend: false,
+			title: false,
+			elements: {
+				arc: {
+					backgroundColor: 'transparent',
+					borderColor: '#ff00ff',
+					borderWidth: 8,
+					borderAlign: function(ctx) {
+						var value = ctx.dataset.data[ctx.dataIndex] || 0;
+						return value > 4 ? 'center' : 'inner';
+					}
+				}
+			},
+		}
+	},
+	options: {
+		canvas: {
+			height: 256,
+			width: 512
+		}
+	}
+};

test/fixtures/controller.doughnut/borderAlign/value.js

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+module.exports = {
+	config: {
+		type: 'doughnut',
+		data: {
+			labels: [0, 1, 2, 3, 4, 5],
+			datasets: [
+				{
+					// option in dataset
+					data: [0, 2, 4, null, 6, 8],
+					borderAlign: 'inner',
+					borderColor: '#00ff00',
+				},
+				{
+					// option in element (fallback)
+					data: [0, 2, 4, null, 6, 8],
+				}
+			]
+		},
+		options: {
+			legend: false,
+			title: false,
+			elements: {
+				arc: {
+					backgroundColor: 'transparent',
+					borderAlign: 'center',
+					borderColor: '#0000ff',
+					borderWidth: 4,
+				}
+			},
+		}
+	},
+	options: {
+		canvas: {
+			height: 256,
+			width: 512
+		}
+	}
+};