Fix unit tests run on 3.8

mcproto/types/nbt.py

@@ -137,8 +137,8 @@ class NBTagType(IntEnum):
     bytes,
     str,
     "NBTag",
-    Sequence["PayloadType"],
-    Mapping[str, "PayloadType"],
+    "Sequence[PayloadType]",
+    "Mapping[str, PayloadType]",
 ]
 """Represents the type of a payload that can be stored in an NBT tag."""
 
@@ -163,17 +163,17 @@ def to_nbt(self, name: str = "") -> NBTag:
     float,
     bytes,
     str,
-    NBTagConvertible,
-    Sequence["FromObjectType"],
-    Mapping[str, "FromObjectType"],
+    "NBTagConvertible",
+    "Sequence[FromObjectType]",
+    "Mapping[str, FromObjectType]",
 ]
 """Represents any object holding some data that can be converted to an NBT tag(s)."""
 
 FromObjectSchema: TypeAlias = Union[
-    type["NBTag"],
-    type[NBTagConvertible],
-    Sequence["FromObjectSchema"],
-    Mapping[str, "FromObjectSchema"],
+    "type[NBTag]",
+    "type[NBTagConvertible]",
+    "Sequence[FromObjectSchema]",
+    "Mapping[str, FromObjectSchema]",
 ]
 """Represents the type of a schema, used to define how an object should be converted to an NBT tag(s)."""
 

tests/mcproto/test_multiplayer.py

@@ -1,9 +1,14 @@
+from __future__ import annotations
+
 import sys
+from typing import TYPE_CHECKING
 from unittest.mock import Mock
 
 import httpx
 import pytest
-from pytest_httpx import HTTPXMock
+
+if sys.version_info > (3, 9) or TYPE_CHECKING:
+    from pytest_httpx import HTTPXMock
 
 from mcproto.multiplayer import (
     JoinAcknowledgeData,