add drawing tests to casper

test/integration/casperjs/SmokeTest.js

@@ -0,0 +1,15 @@
+casper
+  .start(casper.cli.get('baseUrl')+"?debug")
+  .then(function () {
+    this.wait(casper.cli.get('delay'));
+  })
+  .then(function () {
+    this.echo(casper.cli.get('baseUrl')+"?debug");
+    // If there was a JS error after the page load, casper won't perform asserts
+    this.test.assertExists('html', 'Casper JS cannot assert DOM elements. A JS error has probably occured.');
+
+    this.test.assertExists('#drawing-canvas-container canvas', 'Check if drawing canvas element is created');
+  })
+  .run(function () {
+    this.test.done();
+  });