Add test for colorscale cmin/cmax bounds

Author: mdtusz

test/jasmine/tests/colorscale_test.js

@@ -370,4 +370,28 @@ describe('Test colorscale:', function() {
         });
 
     });
+
+    describe('makeScaleFunction', function() {
+        var scale = [
+                [0,'rgb(5,10,172)'],
+                [0.35,'rgb(106,137,247)'],
+                [0.5,'rgb(190,190,190)'],
+                [0.6,'rgb(220,170,132)'],
+                [0.7,'rgb(230,145,90)'],
+                [1,'rgb(178,10,28)']
+            ],
+            scaleFunction = Colorscale.makeScaleFunction(scale, 2, 3);
+
+        it('should constrain color array values between cmin and cmax', function() {
+            var color1 = scaleFunction(1),
+                color2 = scaleFunction(2),
+                color3 = scaleFunction(3),
+                color4 = scaleFunction(4);
+
+            expect(color1).toEqual(color2);
+            expect(color1).toEqual('#050aac');
+            expect(color3).toEqual(color4);
+            expect(color4).toEqual('#b20a1c');
+        });
+    });
 });