diff --git a/test/changeGC.js b/test/changeGC.js
new file mode 100644
index 0000000..23f997d
--- /dev/null
+++ b/test/changeGC.js
@@ -0,0 +1,54 @@
+var x11 = require('../lib');
+var should = require('should');
+
+describe('CreateGC', function() {
+    before(function(done) {
+        var self = this;
+        this.client = x11.createClient(function(err, dpy) {
+            should.not.exist(err);
+            self.X = dpy.client;
+            self.root = dpy.screen[0].root;
+            self.white = dpy.screen[0].white_pixel;
+            self.black = dpy.screen[0].black_pixel;
+            self.wid = self.X.AllocID();
+            self.X.CreateWindow(self.wid, self.root, 0, 0, 1, 1); // 1x1 pixel window
+            self.X.MapWindow(self.wid);
+            self.X.QueryTree(self.root, function(err, list) {
+                should.not.exist(err);
+                list.children.indexOf(self.wid).should.not.equal(-1);
+                done();
+            });
+        });
+    });
+
+    it('should create a Graphic Context correctly', function() {
+        var self = this;
+        this.client.on('error', function(err) {
+            should.not.exist(err);
+        });
+
+        this.gc = this.X.AllocID();
+        this.X.CreateGC(this.gc,
+                        this.wid,
+                        {
+                            foreground: this.black,
+                            background: this.white,
+                            lineStyle : 0
+                        }
+        );
+        
+        this.X.ChangeGC(this.gc,
+                        {
+                            foreground: 0xffff00,
+                            background: 0x0000ff,
+                            lineStyle : 2
+                        }
+        );
+    });
+
+    after(function(done) {
+        this.X.DestroyWindow(this.wid);
+        this.X.on('end', done);
+        this.X.terminate();
+    });
+});