test color fns

test/color.test.js

@@ -1,6 +1,8 @@
 var assert = require('assert');
 var tree = require('../lib/carto/tree.js');
+require('../lib/carto/functions');
 require('../lib/carto/tree/color');
+require('../lib/carto/tree/dimension');
 
 describe('Color', function() {
     describe('basic functionality', function() {
@@ -10,4 +12,14 @@ describe('Color', function() {
             assert.ok(f);
         });
     });
+    describe('functions', function() {
+        it('should be constructed', function() {
+            assert.deepEqual(tree.functions.rgb(0, 0, 0), new tree.Color([0, 0, 0], 1));
+            assert.deepEqual(tree.functions.hue(new tree.Color([0, 0, 0], 1)), new tree.Dimension(0));
+            assert.deepEqual(tree.functions.saturation(new tree.Color([0, 0, 0], 1)), new tree.Dimension(0, '%'));
+            assert.deepEqual(tree.functions.lightness(new tree.Color([0, 0, 0], 1)), new tree.Dimension(0, '%'));
+            assert.deepEqual(tree.functions.alpha(new tree.Color([0, 0, 0], 1)), new tree.Dimension(1));
+            assert.deepEqual(tree.functions.greyscale(new tree.Color([0, 0, 0], 1)), new tree.Color([0, 0, 0], 1));
+        });
+    });
 });