BUG: reject ndarrays in binary operators

Author: ev-br

array_api_strict/_array_object.py

@@ -1104,6 +1104,7 @@ def __imod__(self, other: Array | float, /) -> Array:
         """
         Performs the operation __imod__.
         """
+        self._check_type_device(other)
         other = self._check_allowed_dtypes(other, "real numeric", "__imod__")
         if other is NotImplemented:
             return other
@@ -1126,6 +1127,7 @@ def __imul__(self, other: Array | complex, /) -> Array:
         """
         Performs the operation __imul__.
         """
+        self._check_type_device(other)
         other = self._check_allowed_dtypes(other, "numeric", "__imul__")
         if other is NotImplemented:
             return other
@@ -1148,6 +1150,7 @@ def __ior__(self, other: Array | int, /) -> Array:
         """
         Performs the operation __ior__.
         """
+        self._check_type_device(other)
         other = self._check_allowed_dtypes(other, "integer or boolean", "__ior__")
         if other is NotImplemented:
             return other
@@ -1170,6 +1173,7 @@ def __ipow__(self, other: Array | complex, /) -> Array:
         """
         Performs the operation __ipow__.
         """
+        self._check_type_device(other)
         other = self._check_allowed_dtypes(other, "numeric", "__ipow__")
         if other is NotImplemented:
             return other
@@ -1182,6 +1186,7 @@ def __rpow__(self, other: Array | complex, /) -> Array:
         """
         from ._elementwise_functions import pow  # type: ignore[attr-defined]
 
+        self._check_type_device(other)
         other = self._check_allowed_dtypes(other, "numeric", "__rpow__")
         if other is NotImplemented:
             return other
@@ -1193,6 +1198,7 @@ def __irshift__(self, other: Array | int, /) -> Array:
         """
         Performs the operation __irshift__.
         """
+        self._check_type_device(other)
         other = self._check_allowed_dtypes(other, "integer", "__irshift__")
         if other is NotImplemented:
             return other
@@ -1215,6 +1221,7 @@ def __isub__(self, other: Array | complex, /) -> Array:
         """
         Performs the operation __isub__.
         """
+        self._check_type_device(other)
         other = self._check_allowed_dtypes(other, "numeric", "__isub__")
         if other is NotImplemented:
             return other
@@ -1237,6 +1244,7 @@ def __itruediv__(self, other: Array | complex, /) -> Array:
         """
         Performs the operation __itruediv__.
         """
+        self._check_type_device(other)
         other = self._check_allowed_dtypes(other, "floating-point", "__itruediv__")
         if other is NotImplemented:
             return other
@@ -1259,6 +1267,7 @@ def __ixor__(self, other: Array | int, /) -> Array:
         """
         Performs the operation __ixor__.
         """
+        self._check_type_device(other)
         other = self._check_allowed_dtypes(other, "integer or boolean", "__ixor__")
         if other is NotImplemented:
             return other

array_api_strict/tests/test_array_object.py

@@ -344,6 +344,13 @@ def _array_vals():
                                 getattr(x, _op)(y)
                             else:
                                 assert_raises(TypeError, lambda: getattr(x, _op)(y))
+                            # finally, test that array op ndarray raises
+                            # XXX: as long as there is __array__ or __buffer__, __rop__s
+                            #  still return ndarrays
+                            if not _op.startswith("__r"):
+                                with assert_raises(TypeError):
+                                    getattr(x, _op)(y._array)
+
 
     for op, dtypes in unary_op_dtypes.items():
         for a in _array_vals():