Fix marshmallow partial loading should skip JSON schema required fields

marshmallow_jsonschema/base.py

@@ -143,10 +143,14 @@ def get_properties(self, obj):
 
     def get_required(self, obj):
         """Fill out required field."""
+        if obj.partial == True:
+            return []
+
         required = []
+        partial = obj.partial or []
 
         for field_name, field in sorted(obj.fields.items()):
-            if field.required:
+            if field.required and field.name not in partial:
                 required.append(field.name)
 
         return required or missing

tests/test_dump.py

@@ -509,3 +509,17 @@ class Meta:
     properties_names = [k for k in keys]
 
     assert properties_names == ["d", "c", "a"]
+
+def test_partial_loading():
+    class TestSchema(Schema):
+        id = fields.Integer(required=True)
+        foo = fields.Integer(required=True)
+
+    json_schema = JSONSchema()
+    schema = TestSchema(partial=True)
+    dumped = json_schema.dump(schema)
+    assert dumped['definitions']['TestSchema']['required'] == []
+
+    schema = TestSchema(partial=('foo', ))
+    dumped = json_schema.dump(schema)
+    assert dumped['definitions']['TestSchema']['required'] == ['id']