diff --git a/tests/hlsl/arithmetic-float-uniform.shader_test b/tests/hlsl/arithmetic-float-uniform.shader_test
index 38e37b3f..506375eb 100644
--- a/tests/hlsl/arithmetic-float-uniform.shader_test
+++ b/tests/hlsl/arithmetic-float-uniform.shader_test
@@ -91,6 +91,38 @@ uniform 0 float4 1.0 0.0 0.0 0.0
 draw quad
 probe all rgba (1e99, 1e99, 1e99, 1e99)
 
+[pixel shader todo]
+uniform float4 a, b, c;
+
+float4 main() : sv_target
+{
+    return mad(a, b, c);
+}
+
+[test]
+uniform 0 float4 1.00000007 -42.1 4.0 45.0
+uniform 4 float4 1.625 -5.0 4.125 5.0
+uniform 8 float4 1.00000007 -1.0 0.5 -0.5
+todo draw quad
+probe all rgba (2.62500024, 209.5, 17.0, 224.5) 1
+
+% precise mad() is not allowed to fuse, even though unfused is less precise.
+[pixel shader todo]
+uniform float4 a, b, c;
+
+float4 main() : sv_target
+{
+    precise float4 ret = mad(a, b, c);
+    return ret;
+}
+
+[test]
+uniform 0 float4 1.00000007 -42.1 4.0 45.0
+uniform 4 float4 1.625 -5.0 4.125 5.0
+uniform 8 float4 1.00000007 -1.0 0.5 -0.5
+todo draw quad
+todo probe all rgba (2.62500048, 209.5, 17.0, 224.5)
+
 [require]
 shader model >= 5.0
 float64
@@ -140,3 +172,18 @@ float4 main() : SV_TARGET
 uniform 0 double2 1.5e300 2.0e299
 todo(sm<6) draw quad
 probe all rgba (7.5, 7.5, 7.5, 7.5)
+
+[pixel shader todo]
+uniform double2 a, b, c;
+
+float4 main() : sv_target
+{
+    return float4(fma(a, b, c), 0, 0);
+}
+
+[test]
+uniform 0 double2 1.00000007 -42.1
+uniform 4 double2 1.625 -5.0
+uniform 8 double2 1.00000007 -1.0
+todo draw quad
+probe all rgba (2.62500024, 209.5, 0.0, 0.0)