add changeset, test case and format

Author: princecodes247

.changeset/early-lines-feel.md

@@ -0,0 +1,5 @@
+---
+"monarch-orm": patch
+---
+
+Fix update operators `$addToSet` failing schema validation when parsing data

src/schema/update.ts

@@ -89,10 +89,7 @@ export function updateParser<T extends AnyMonarchType>(
   return input;
 }
 
-function unwrapTo<T extends new (...args: any) => AnyMonarchType>(
-  type: AnyMonarchType,
-  target: T
-): InstanceType<T> {
+function unwrapTo<T extends new (...args: any) => AnyMonarchType>(type: AnyMonarchType, target: T): InstanceType<T> {
   let unwrapped: any = type;
   while (!(unwrapped instanceof target)) {
     if (unwrapped instanceof MonarchDefaulted) unwrapped = MonarchDefaulted.type(unwrapped);

tests/query/update.test.ts

@@ -299,6 +299,13 @@ describe("Update Operations", async () => {
         expect(updated?.tags).toEqual(["x", "y"]);
       });
 
+      it("$addToSet parses element through type", async () => {
+        const doc = await db.collections.arrays.insertOne({ name: "a", tags: [], nums: [] });
+        await db.collections.arrays.updateOne({ _id: doc._id }, { $addToSet: { tags: "UPPER" } });
+        const updated = await db.collections.arrays.findOne({ _id: doc._id });
+        expect(updated?.tags).toEqual(["upper"]);
+      });
+
       it("$push rejects non-array field", async () => {
         const doc = await db.collections.numeric.insertOne({ name: "a", count: 0 });
         // @ts-expect-error