add test for update item query with condition expression

src/queryBuilders/__snapshots__/updateItemQueryBuilder.integration.test.ts.snap

@@ -48,6 +48,19 @@ exports[`UpdateItemQueryBuilder > handles update item query with SET statements
 }
 `;
 
+exports[`UpdateItemQueryBuilder > handles update item query with condition expressions 2`] = `
+{
+  "dataTimestamp": 2,
+  "someSet": Set {
+    "1",
+    "2",
+    "3",
+  },
+  "somethingElse": 0,
+  "userId": "1",
+}
+`;
+
 exports[`UpdateItemQueryBuilder > handles update item query with multiple different operations 1`] = `
 {
   "dataTimestamp": 2,

src/queryBuilders/updateItemQueryBuilder.integration.test.ts

@@ -156,5 +156,34 @@ describe("UpdateItemQueryBuilder", () => {
     expect(foundItem).toMatchSnapshot();
   });
 
-  it.todo("handles update item query with condition expressions");
+  it("handles update item query with condition expressions", async () => {
+    await tsynamoClient
+      .putItem("myTable")
+      .item({
+        userId: "1",
+        dataTimestamp: 2,
+        someSet: new Set(["1", "2", "3"]),
+        somethingElse: 0,
+      })
+      .execute();
+
+    expect(
+      tsynamoClient
+        .updateItem("myTable")
+        .keys({ userId: "1", dataTimestamp: 2 })
+        .remove("someSet")
+        .remove("somethingElse")
+        .conditionExpression("somethingElse", ">", 0)
+        .execute()
+    ).rejects.toMatchInlineSnapshot(
+      `[ConditionalCheckFailedException: The conditional request failed]`
+    );
+
+    const foundItem = await tsynamoClient
+      .getItem("myTable")
+      .keys({ userId: "1", dataTimestamp: 2 })
+      .execute();
+
+    expect(foundItem).toMatchSnapshot();
+  });
 });

src/queryBuilders/updateItemQueryBuilder.ts

@@ -117,6 +117,7 @@ export interface UpdateItemQueryBuilderInterface<
     pk: Keys
   ): UpdateItemQueryBuilderInterface<DDB, Table, O>;
 
+  // TODO: Make it possible to delete a whole object, and not just nested keys
   remove<Key extends ObjectKeyPaths<PickNonKeys<DDB[Table]>>>(
     attribute: Key
   ): UpdateItemQueryBuilderInterface<DDB, Table, O>;