update docs, add params to json too

tests/test_exclude_include_dict/test_pydantic_dict_params.py

@@ -0,0 +1,97 @@
+from typing import List
+
+import databases
+import pytest
+import sqlalchemy
+
+import ormar
+from tests.settings import DATABASE_URL
+
+metadata = sqlalchemy.MetaData()
+database = databases.Database(DATABASE_URL, force_rollback=True)
+
+
+class Category(ormar.Model):
+    class Meta:
+        tablename = "categories"
+        metadata = metadata
+        database = database
+
+    id: int = ormar.Integer(primary_key=True)
+    name: str = ormar.String(max_length=100, default="Test", nullable=True)
+    visibility: bool = ormar.Boolean(default=True)
+
+
+class Item(ormar.Model):
+    class Meta:
+        tablename = "items"
+        metadata = metadata
+        database = database
+
+    id: int = ormar.Integer(primary_key=True)
+    name: str = ormar.String(max_length=100)
+    price: float = ormar.Float(default=9.99)
+    categories: List[Category] = ormar.ManyToMany(Category)
+
+
+@pytest.fixture(autouse=True, scope="module")
+def create_test_database():
+    engine = sqlalchemy.create_engine(DATABASE_URL)
+    metadata.create_all(engine)
+    yield
+    metadata.drop_all(engine)
+
+
+@pytest.mark.asyncio
+async def test_exclude_default():
+    async with database:
+        category = Category()
+        assert category.dict() == {
+            "id": None,
+            "items": [],
+            "name": "Test",
+            "visibility": True,
+        }
+        assert category.dict(exclude_defaults=True) == {"items": []}
+
+        await category.save()
+        category2 = await Category.objects.get()
+        assert category2.dict() == {
+            "id": 1,
+            "items": [],
+            "name": "Test",
+            "visibility": True,
+        }
+        assert category2.dict(exclude_defaults=True) == {"id": 1, "items": []}
+        assert category2.json(exclude_defaults=True) == '{"id": 1, "items": []}'
+
+
+@pytest.mark.asyncio
+async def test_exclude_none():
+    async with database:
+        category = Category(name=None)
+        assert category.dict() == {
+            "id": None,
+            "items": [],
+            "name": None,
+            "visibility": True,
+        }
+        assert category.dict(exclude_none=True) == {"items": [], "visibility": True}
+
+        await category.save()
+        category2 = await Category.objects.get()
+        assert category2.dict() == {
+            "id": 1,
+            "items": [],
+            "name": None,
+            "visibility": True,
+        }
+        assert category2.dict(exclude_none=True) == {
+            "id": 1,
+            "items": [],
+            "visibility": True,
+        }
+        assert (
+            category2.json(exclude_none=True)
+            == '{"id": 1, "visibility": true, "items": []}'
+        )