adding optional / none to tests

Author: slorello89

tests/test_hash_model.py

@@ -960,6 +960,7 @@ class Model(HashModel):
         first_name: str
         last_name: str
         age: int = Field(default=18)
+        bio: Optional[str] = Field(default=None)
 
     class Child(Model):
         other_name: str
@@ -974,3 +975,4 @@ class Child(Model):
     rematerialized = await Child.find(Child.pk == m.pk).first()
 
     assert rematerialized.age == 18
+    assert rematerialized.bio is None

tests/test_json_model.py

@@ -1167,6 +1167,7 @@ class Model(JsonModel):
         first_name: str
         last_name: str
         age: int = Field(default=18)
+        bio: Optional[str] = Field(default=None)
 
     class Child(Model):
         is_new: bool = Field(default=True)
@@ -1181,3 +1182,4 @@ class Child(Model):
 
     assert rematerialized.age == 18
     assert rematerialized.age != 19
+    assert rematerialized.bio is None