test extended filter chains

Author: samizdatco

test/context2d.test.js

@@ -377,7 +377,7 @@ describe("Context2D", ()=>{
       // make sure chains of filters compose correctly <https://codepen.io/sosuke/pen/Pjoqqp>
       ctx.filter = 'blur(5px) invert(56%) sepia(63%) saturate(4837%) hue-rotate(163deg) brightness(96%) contrast(101%)'
       ctx.fillRect(0,0,20,20)
-      expect(pixel(10, 10)).toEqual([0, 162, 213, 245])
+      expect(pixel(10, 10)).toEqual([0, 161, 212, 245])
     })
 
     test("clip()", () => {

test/visual/tests.js

@@ -2093,6 +2093,10 @@ tests['shadow in filter'] = function (ctx) {
   ctx.fillRect(20, 0, 33, 33)
 }
 
+tests['filter chains'] = function (ctx) {
+  ctx.filter = 'blur(5px) invert(56%) sepia(63%) saturate(4837%) hue-rotate(163deg) brightness(96%) contrast(101%)'
+  ctx.fillRect(40,40,120,120)
+}
 
 tests['font state'] = function (ctx) {
   ctx.save()