diff --git a/css/css-transforms/transform-with-sign-function.html b/css/css-transforms/transform-with-sign-function.html
index 9c5387c58924fe..b6e179d390b9bf 100644
--- a/css/css-transforms/transform-with-sign-function.html
+++ b/css/css-transforms/transform-with-sign-function.html
@@ -17,5 +17,9 @@
 test_math_used('skewY(calc(sign(1em - 1px) * 2deg))', 'skewY(2deg)', {prop:'transform'});
 test_math_used('matrix(calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2))', 'matrix(2, 2, 2, 2, 2, 2)', {prop:'transform'});
 test_math_used('matrix3d(calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2),calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2), calc(sign(1em - 1px) * 2))', 'matrix3d(2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2)', {prop:'transform'});
+test_math_used('rotate(calc(sign(1em - 1px) * 2deg))', 'rotate(2deg)', {prop:'transform'});
+test_math_used('rotateX(calc(sign(1em - 1px) * 2deg))', 'rotateX(2deg)', {prop:'transform'});
+test_math_used('rotateY(calc(sign(1em - 1px) * 2deg))', 'rotateY(2deg)', {prop:'transform'});
+test_math_used('rotateZ(calc(sign(1em - 1px) * 2deg))', 'rotateZ(2deg)', {prop:'transform'});
 
 </script>