Add test case

Author: CuiYifeng

test/regressions/test_copy.py

@@ -12,7 +12,9 @@
 
 
 class TestSimpleCopy(TestCase):
-    @dtypes(*float8_types_and(torch.float8_e8m0fnu, torch.float32))
+    @dtypes(
+        *float8_types_and(torch.float8_e8m0fnu, torch.float4_e2m1fn_x2, torch.float32)
+    )
     def test_copy_and_clone(self, dtype):
         a_cpu = torch.randn(16, 64, 28, 28)
         b_cpu = torch.randn(16, 64, 28, 28)