Loosen test precision

Author: dy

test/jasmine/assets/read_pixel.js

@@ -1,13 +1,16 @@
 'use strict';
 
-module.exports = function(canvas, x, y) {
+module.exports = function(canvas, x, y, w, h) {
     if(!canvas) return null;
 
+    if(!w) w = 1;
+    if(!h) h = 1;
+
     var gl = canvas.getContext('webgl');
 
-    var pixels = new Uint8Array(4);
+    var pixels = new Uint8Array(4 * w * h);
 
-    gl.readPixels(x, y, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+    gl.readPixels(x, y, w, h, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
 
     return pixels;
 };

test/jasmine/tests/gl_plot_interact_test.js

@@ -1582,8 +1582,9 @@ describe('Test gl2d plots', function() {
         .then(done);
     });
 
-    it('should be able to toggle visibility', function(done) {
+    fit('should be able to toggle visibility', function(done) {
         var _mock = Lib.extendDeep({}, mock);
+        _mock.data[0].line.width = 5;
 
         Plotly.plot(gd, _mock)
         .then(delay(20))