Fix console.log printing multiple properties

1 files changed, 9 insertions, 0 deletions

diff --git a/test/bun.js/inspect.test.js b/test/bun.js/inspect.test.js
index 738442211..d0f4f026a 100644
--- a/test/bun.js/inspect.test.js
+++ b/test/bun.js/inspect.test.js
@@ -1,5 +1,14 @@
 import { it, expect, describe } from "bun:test";
 
+it("when prototype defines the same property, don't print the same property twice", () => {
+  var base = {
+    foo: "123",
+  };
+  var obj = Object.create(base);
+  obj.foo = "456";
+  expect(Bun.inspect(obj).trim()).toBe('{\n  foo: "456"\n}'.trim());
+});
+
 it("Blob inspect", () => {
   expect(Bun.inspect(new Blob(["123"]))).toBe(`Blob (3 bytes)`);
   expect(Bun.inspect(new Blob(["123".repeat(900)]))).toBe(`Blob (2.70 KB)`);