diff --git a/t/cypress/integration/t/mockData.ts b/t/cypress/integration/t/mockData.ts
index 8c63fb75f7..1d6d21df0a 100644
--- a/t/cypress/integration/t/mockData.ts
+++ b/t/cypress/integration/t/mockData.ts
@@ -74,4 +74,14 @@ describe("Generate objects", () => {
             );
         });
     });
+
+    it("should not overwrite _id if passed", () => {
+        const home_library_id = "LIB4TEST";
+        cy.task("buildSampleObject", {
+            object: "item",
+            values: { home_library_id },
+        }).then(mockItem => {
+            expect(mockItem.home_library_id).to.equal(home_library_id);
+        });
+    });
 });