Rudimentary operator tests

Author: honno

array_api_tests/dtype_helpers.py

@@ -341,14 +341,14 @@ def result_type(*dtypes: DataType):
     '__ge__': 'greater_equal',
     '__gt__': 'greater',
     '__le__': 'less_equal',
-    '__lshift__': 'bitwise_left_shift',
     '__lt__': 'less',
     # '__matmul__': 'matmul',  # TODO: support matmul
     '__mod__': 'remainder',
     '__mul__': 'multiply',
     '__ne__': 'not_equal',
     '__or__': 'bitwise_or',
     '__pow__': 'pow',
+    '__lshift__': 'bitwise_left_shift',
     '__rshift__': 'bitwise_right_shift',
     '__sub__': 'subtract',
     '__truediv__': 'divide',