feat: enforce unique non-empty prefixes in TypeIDMixin

Generated-by: aiautocommit

activemodel/mixins/typeid.py

@@ -5,14 +5,23 @@
 
 from activemodel.types.typeid import TypeIDType
 
+_prefixes = []
+
 
 def TypeIDMixin(prefix: str):
+    assert prefix
+    assert (
+        prefix not in _prefixes
+    ), f"prefix {prefix} already exists, pick a different one"
+
     class _TypeIDMixin:
         id: uuid.UUID = Field(
             sa_column=Column(TypeIDType(prefix), primary_key=True),
             default_factory=lambda: TypeID(prefix),
         )
 
+    _prefixes.append(prefix)
+
     return _TypeIDMixin
 
 

test/typeid_test.py

@@ -0,0 +1,14 @@
+import pytest
+from activemodel.mixins import TypeIDMixin
+
+
+def test_enforces_unique_prefixes():
+    TypeIDMixin("hi")
+
+    with pytest.raises(AssertionError):
+        TypeIDMixin("hi")
+
+
+def test_no_empty_prefixes_test():
+    with pytest.raises(AssertionError):
+        TypeIDMixin("")