unit tests

tests/core/test_generics.py

@@ -0,0 +1,67 @@
+from dataclasses import dataclass
+from typing import Generic, List, TypeVar
+from dacite import from_dict
+
+T = TypeVar("T")
+U = TypeVar("U")
+
+
+@dataclass
+class X:
+    a: str
+
+
+@dataclass
+class A(Generic[T, U]):
+    x: T
+    y: List[U]
+
+
+def test_multi_generic():
+    data = {
+        "x": {
+            "a": "foo",
+        },
+        "y": [1, 2, 3],
+    }
+
+    result = from_dict(data_class=A[X, int], data=data)
+
+    assert result == A(x=X(a="foo"), y=[1, 2, 3])
+
+
+def test_inherited_generic():
+    @dataclass
+    class B(A[X, int]):
+        z: str
+
+    data = {
+        "x": {
+            "a": "foo",
+        },
+        "y": [1, 2, 3],
+        "z": "bar",
+    }
+
+    result = from_dict(data_class=B, data=data)
+
+    assert result == B(x=X(a="foo"), y=[1, 2, 3], z="bar")
+
+
+def test_generic_field():
+    @dataclass
+    class C:
+        z: A[X, int]
+
+    data = {
+        "z": {
+            "x": {
+                "a": "foo",
+            },
+            "y": [1, 2, 3],
+        }
+    }
+
+    result = from_dict(data_class=C, data=data)
+
+    assert result == C(z=A(x=X(a="foo"), y=[1, 2, 3]))