test generic forward reference

tests/core/test_forward_reference.py

@@ -1,7 +1,9 @@
 from dataclasses import dataclass
-from typing import List, Optional
+from typing import Generic, List, Optional, TypeVar
 from dacite import from_dict
 
+T = TypeVar("T")
+
 
 @dataclass
 class Person:
@@ -15,6 +17,18 @@ class Club:
     members: List["Person"]
 
 
+@dataclass
+class Employee:
+    name: str
+
+
+@dataclass
+class Team(Generic[T]):
+    name: str
+    members: Optional[List[T]] = None
+    subteams: Optional[List["Team[T]"]] = None
+
+
 def test_self_reference():
     data = {"name": "John Doe", "children": [{"name": "Jane Doe"}]}
 
@@ -29,3 +43,13 @@ def test_other_reference():
     result = from_dict(Club, data)
 
     assert result == Club(name="FooBar", members=[Person(name="John Doe", children=[Person(name="Jane Doe")])])
+
+
+def test_generic_self_reference():
+    data = {"name": "foo", "members": [{"name": "John"}], "subteams": [{"name": "bar", "members": [{"name": "Jane"}]}]}
+
+    result = from_dict(Team[Employee], data)
+
+    assert result == Team(
+        name="foo", members=[Employee(name="John")], subteams=[Team(name="bar", members=[Employee(name="Jane")])]
+    )

tests/core/test_generics.py

@@ -30,7 +30,7 @@ def test_multi_generic():
     assert result == A(x=X(a="foo"), y=[1, 2, 3])
 
 
-def test_inherited_generic():
+def test_generic_parent():
     @dataclass
     class B(A[X, int]):
         z: str