Add JSONField for storing JSON data

tests/test_jsonfield.py

@@ -0,0 +1,35 @@
+# pylint: disable=redefined-outer-name
+# pylint: disable=missing-class-docstring
+# pylint: disable=too-few-public-methods
+# pylint: disable=unused-import
+from pathlib import Path
+
+import peewee
+import pytest
+
+import peewee_plus
+from .fixtures import fakedb
+
+
+def test_json(fakedb):
+    """Test basic usage of JSONField class"""
+
+    class TestModel(peewee.Model):
+        class Meta:
+            database = fakedb
+
+        some_data = peewee_plus.JSONField()
+
+    fakedb.create_tables([TestModel])
+
+    data = {"foo": 10, "bar": ["hello", "world"], "baz": True}
+
+    model = TestModel(some_data=data)
+    model.save()
+
+    model = TestModel.get()
+    assert model.some_data == data
+
+    with pytest.raises(peewee.IntegrityError):
+        bad = TestModel(some_data=Path("."))
+        bad.save()