api compatiblity: modify softmax decorator name, add test (#74952)

Author: cyy536

python/paddle/utils/decorator_utils.py

@@ -427,22 +427,7 @@ def __init__(
     def process(
         self, args: tuple[Any, ...], kwargs: dict[str, Any]
     ) -> tuple[tuple[Any, ...], dict[str, Any]]:
-        found_keys = [key for key in self.illegal_keys if key in kwargs]
-
-        if found_keys:
-            found_keys.sort()
-            keys_str = ", ".join(f"'{key}'" for key in found_keys)
-            plural = "s" if len(found_keys) > 1 else ""
-
-            raise TypeError(
-                f"{self.func_name}() received unexpected keyword argument{plural} {keys_str}. "
-                f"\nDid you mean to use {self.correct_name}() instead?"
-            )
-        if self.warn_msg is not None:
-            warnings.warn(
-                self.warn_msg,
-                category=Warning,
-            )
+        args, kwargs = super().process(args, kwargs)
 
         if self.ignore_param:
             name, index, typ = self.ignore_param

test/legacy_test/test_softmax_op.py

@@ -790,7 +790,7 @@ def test_static_check(self):
                 with paddle.static.program_guard(paddle.static.Program()):
                     x = paddle.static.data('X', x_np.shape, 'float32')
                     out1 = func(input=x, dim=None, _stacklevel=3)
-                    out2 = func(x)
+                    out2 = func(x, None, 3)
                     exe = paddle.static.Executor(self.place)
                     res = exe.run(feed={'X': x_np}, fetch_list=[out1, out2])
                     for rr in res:
@@ -840,7 +840,7 @@ def test_dygraph_check(self):
             x = paddle.to_tensor(x_np)
             out1 = func(input=x, dim=None, _stacklevel=3)
             x = paddle.to_tensor(x_np)
-            out2 = func(x)
+            out2 = func(x, None, 3)
             for r in [out1, out2]:
                 np.testing.assert_allclose(out_ref, r.numpy(), rtol=1e-05)
 
@@ -940,6 +940,19 @@ def test_dygraph_check(self):
 
         paddle.enable_static()
 
+    def test_forbid_keywords(self):
+        with (
+            static_guard(),
+            paddle.static.program_guard(paddle.static.Program()),
+        ):
+            x = paddle.static.data('X', [2, 3], 'float32')
+            self.assertRaises(TypeError, compat.softmax, x=x, axis=-1)
+            self.assertRaises(TypeError, compat.softmax, x=x, dim=-1)
+            self.assertRaises(TypeError, compat.softmax, input=x, axis=-1)
+
+            if core.is_compiled_with_cuda():
+                compat.softmax(input=x, dim=-1)
+
 
 if __name__ == "__main__":
     unittest.main()