regression test for chart area clipping

test/fixtures/controller.bar/chart-area-clip.js

@@ -0,0 +1,42 @@
+module.exports = {
+	config: {
+		type: 'bar',
+		data: {
+			labels: [0, 1, 3, 4],
+			datasets: [
+				{
+					data: [5, 20, -5, -20],
+					borderColor: '#ff0000'
+				}
+			]
+		},
+		options: {
+			legend: false,
+			title: false,
+			layout: {
+				padding: {
+					left: 0,
+					right: 0,
+					top: 50,
+					bottom: 50
+				}
+			},
+			elements: {
+				rectangle: {
+					backgroundColor: '#00ff00',
+					borderWidth: 8
+				}
+			},
+			scales: {
+				xAxes: [{display: false}],
+				yAxes: [{display: false, ticks: {min: -10, max: 10}}]
+			}
+		}
+	},
+	options: {
+		canvas: {
+			height: 256,
+			width: 512
+		}
+	}
+};