diff --git a/Tests/AppKit/CPDOMDisplayServerTest.j b/Tests/AppKit/CPDOMDisplayServerTest.j
new file mode 100644
index 000000000..caf7f3aee
--- /dev/null
+++ b/Tests/AppKit/CPDOMDisplayServerTest.j
@@ -0,0 +1,98 @@
+@import <OJUnit/OJTestCase.j>
+
+#include "../../AppKit/Platform/DOM/CPDOMDisplayServer.h"
+
+@implementation CPDOMDisplayServerTest : OJTestCase
+{
+    JSObject DOMElement;
+    BOOL     aTransform;
+}
+
+- (void)setUp
+{
+    // set up a dummy DOM element.
+    DOMElement = {
+        style: {
+        }
+    };
+
+    aTransform = NO;
+}
+
+- (void)testSetStyleRightBottom
+{
+    var aRight = 10,
+        aBottom = 10;
+
+    CPDOMDisplayServerSetStyleRightBottom(DOMElement, aTransform, aRight, aBottom);
+    [self assert:DOMElement.style.right equals:"10px"];
+    [self assert:DOMElement.style.bottom equals:"10px"];
+}
+
+- (void)testSetStyleLeftBottom
+{
+    var aLeft = 10,
+        aBottom = 10;
+
+    CPDOMDisplayServerSetStyleLeftBottom(DOMElement, aTransform, aLeft, aBottom);
+
+    [self assert:DOMElement.style.bottom equals:"10px"];
+    [self assert:DOMElement.style.left equals:"10px"];
+
+}
+
+- (void)testSetStyleLeftTop
+{
+    var aTop = 10,
+        aLeft = 10;
+
+    CPDOMDisplayServerSetStyleLeftTop(DOMElement, aTransform, aLeft, aTop);
+
+    [self assert:DOMElement.style.top equals:"10px"];
+    [self assert:DOMElement.style.left equals:"10px"];
+}
+
+- (void)testSetStyleRightTop
+{
+    var aTop = 10,
+        aRight = 10;
+
+    CPDOMDisplayServerSetStyleRightTop(DOMElement, aTransform, aRight, aTop);
+
+    [self assert:DOMElement.style.top equals:"10px"];
+    [self assert:DOMElement.style.right equals:"10px"];
+}
+
+- (void)testSetStyleWithTransform
+{
+    aTransform = CGAffineTransformMakeTranslation(10, 10);
+
+    CPDOMDisplayServerSetStyleRightTop(DOMElement, aTransform, 10, 10)
+
+    [self assert:DOMElement.style.top equals:"20px"];
+    [self assert:DOMElement.style.right equals:"20px"];
+}
+
+- (void)testSetStyleSize
+{
+    var width = 10,
+        height = 10;
+
+    CPDOMDisplayServerSetStyleSize(DOMElement, width, height);
+
+    [self assert:DOMElement.style.width equals:"10px"];
+    [self assert:DOMElement.style.height equals:"10px"];
+}
+
+- (void)testSetElementSize
+{
+    var width = 10,
+        height = 10;
+
+    CPDOMDisplayServerSetSize(DOMElement, width, height);
+
+    [self assert:DOMElement.width equals:10];
+    [self assert:DOMElement.height equals:10];
+}
+
+@end
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