+it('should be influenced by options.pixelRatio', function () {
+ var graph = document.getElementById("graph");
+
+ // make sure devicePixelRatio is still setup to not 1.
+ assert(devicePixelRatio > 1.5, 'devicePixelRatio is not much greater than 1.');
+
+ var data = "X,Y\n" +
+ "0,-1\n" +
+ "1,0\n" +
+ "2,1\n" +
+ "3,0\n";
+
+ // first try a default one
+ var g1 = new Dygraph(graph, data, {});
+ var area1 = g1.getArea();
+
+ var g2 = new Dygraph(graph, data, { pixelRatio: 1 });
+ var area2 = g2.getArea();
+
+ var g3 = new Dygraph(graph, data, { pixelRatio: 3 });
+ var area3 = g3.getArea();
+
+ assert.deepEqual(area1, area2, 'areas 1 and 2 are not the same');
+ assert.deepEqual(area2, area3, 'areas 2 and 3 are not the same');
+
+ assert.notEqual(g1.canvas_.width, g2.canvas_.width,
+ 'Expected, for devicePixelRatio != 1, '
+ + 'that setting options.pixelRatio would change the canvas width');
+ assert.equal(g2.canvas_.width * 3, g3.canvas_.width,
+ 'Expected that pixelRatio of 3 vs 1 would triple the canvas width.');
+});