fix: Move aten.neg test case (#2310)

Author: gs-olive

py/torch_tensorrt/dynamo/conversion/impl/unary/ops.py

@@ -393,6 +393,11 @@ def neg(
     name: str,
     input_val: TRTTensor,
 ) -> TRTTensor:
+    if (isinstance(input_val, TRTTensor)) and (
+        input_val.dtype == trt.int8 or input_val.dtype == trt.int32
+    ):
+        input_val = cast_trt_tensor(network, input_val, trt.float32, name)
+
     return convert_unary(
         network, target, source_ir, name, trt.UnaryOperation.NEG, input_val
     )

tests/py/dynamo/converters/test_neg_aten.py renamed to tests/py/dynamo/conversion/test_neg_aten.py

@@ -3,7 +3,8 @@
 from parameterized import parameterized
 from torch.testing._internal.common_utils import run_tests
 from torch_tensorrt import Input
-from torch_tensorrt.dynamo.test_utils import DispatchTestCase
+
+from .harness import DispatchTestCase
 
 
 class TestNegConverter(DispatchTestCase):
@@ -43,8 +44,8 @@ def forward(self, input):
         self.run_test(
             neg(),
             inputs,
-            output_dtypes=[torch.int32],
             expected_ops={torch.ops.aten.neg.default},
+            check_dtype=False,
         )