Merge pull request #883 from jedahan/colorMode-tests

Add unit test for blendMode()

Author: Lauren McCarthy

test/test.html

@@ -35,6 +35,7 @@
   <script src="unit/core/core.js" type="text/javascript" ></script>
   <!--<script src="unit/core/2d_primitives.js" type="text/javascript" ></script>-->
   <script src="unit/core/curves.js" type="text/javascript" ></script>
+  <script src="unit/core/renderer.js" type="text/javascript" ></script>
 
   <script src="unit/math/calculation.js" type="text/javascript" ></script>
   <script src="unit/math/random.js" type="text/javascript" ></script>

test/unit/core/renderer.js

@@ -0,0 +1,38 @@
+suite('Renderer', function() {
+
+  var myp5 = new p5(function( p ) {
+    p.setup = function() {};
+    p.draw = function() {};
+  });
+
+  teardown(function(){
+    myp5.clear();
+  });
+
+  suite('p5.prototype.blendMode', function() {
+    var blendMode = p5.prototype.blendMode;
+    var drawX = function() {
+      myp5.strokeWeight(30);
+      myp5.stroke(80, 150, 255);
+      myp5.line(25, 25, 75, 75);
+      myp5.stroke(255, 50, 50);
+      myp5.line(75, 25, 25, 75);
+    };
+    suite('blendMode()', function() {
+      test('should be a function', function() {
+        assert.ok(blendMode);
+        assert.typeOf(blendMode, 'function');
+      });
+      test('should be able to ADD', function() {
+        myp5.blendMode(myp5.ADD);
+        drawX();
+      });
+      test('should be able to MULTIPLY', function() {
+        myp5.blendMode(myp5.MULTIPLY);
+        drawX();
+      });
+
+    });
+  });
+
+});