1 files changed, 90 insertions, 0 deletions
diff --git a/tests/functional/a/alternative/alternative_union_syntax_py37.py b/tests/functional/a/alternative/alternative_union_syntax_py37.py
new file mode 100644
index 000000000..95e463fc1
--- /dev/null
+++ b/tests/functional/a/alternative/alternative_union_syntax_py37.py
@@ -0,0 +1,90 @@
+"""Test PEP 604 - Alternative Union syntax
+with postponed evaluation of annotations enabled.
+
+For Python 3.7 - 3.9: Most things should work.
+Testing only 3.8/3.9 to support TypedDict.
+"""
+# pylint: disable=missing-function-docstring,unused-argument,invalid-name,missing-class-docstring,inherit-non-class,too-few-public-methods,line-too-long
+from __future__ import annotations
+import dataclasses
+import typing
+from dataclasses import dataclass
+from typing import NamedTuple, TypedDict
+
+
+Alias = str | typing.List[int]  # [unsupported-binary-operation]
+lst = [typing.Dict[str, int] | None,]  # [unsupported-binary-operation]
+
+var1: typing.Dict[str, int | None]
+var2: int | str | None
+var3: int | list[str | int]
+var4: typing.Dict[typing.Tuple[int, int] | int, None]
+
+cast_var = 1
+cast_var = typing.cast(str | int, cast_var)  # [unsupported-binary-operation]
+
+T = typing.TypeVar("T", int | str, bool)  # [unsupported-binary-operation]
+
+(lambda x: 2)(int | str)  # [unsupported-binary-operation]
+
+var: str | int
+
+def func(arg: int | str):
+    pass
+
+def func2() -> int | str:
+    pass
+
+class CustomCls(int):
+    pass
+
+Alias2 = CustomCls |  str  # [unsupported-binary-operation]
+
+var2 = CustomCls(1) | int(2)
+
+
+# Check typing.NamedTuple
+CustomNamedTuple = typing.NamedTuple(
+    "CustomNamedTuple", [("my_var", int | str)])  # [unsupported-binary-operation]
+
+class CustomNamedTuple2(NamedTuple):
+    my_var: int | str
+
+class CustomNamedTuple3(typing.NamedTuple):
+    my_var: int | str
+
+
+# Check typing.TypedDict
+CustomTypedDict = TypedDict("CustomTypedDict", my_var=int | str)  # [unsupported-binary-operation]
+
+CustomTypedDict2 = TypedDict("CustomTypedDict2", {"my_var": int | str})  # [unsupported-binary-operation]
+
+class CustomTypedDict3(TypedDict):
+    my_var: int | str
+
+class CustomTypedDict4(typing.TypedDict):
+    my_var: int | str
+
+
+# Check dataclasses
+def my_decorator(*args, **kwargs):
+    def wraps(*args, **kwargs):
+        pass
+    return wraps
+
+@dataclass
+class CustomDataClass:
+    my_var: int | str
+
+@dataclasses.dataclass
+class CustomDataClass2:
+    my_var: int | str
+
+@dataclass()
+class CustomDataClass3:
+    my_var: int | str
+
+@my_decorator
+@dataclasses.dataclass
+class CustomDataClass4:
+    my_var: int | str