From de6ea7375aec08ebb0eaf8b588dfe90444eec893 Mon Sep 17 00:00:00 2001
From: Alistair Smith <hi@alistair.sh>
Date: Tue, 7 Oct 2025 16:32:42 -0700
Subject: [PATCH] types: Add (passing) regression test for #5396

---
 .../bun-types/fixture/5396.test.ts            | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 test/integration/bun-types/fixture/5396.test.ts

diff --git a/test/integration/bun-types/fixture/5396.test.ts b/test/integration/bun-types/fixture/5396.test.ts
new file mode 100644
index 0000000000..3f51baef0b
--- /dev/null
+++ b/test/integration/bun-types/fixture/5396.test.ts
@@ -0,0 +1,28 @@
+import { describe, expect, it, jest, mock, spyOn } from "bun:test";
+
+class AnyDTO {
+  anyField: string = "any_value";
+}
+
+class AnyClass {
+  async anyMethod(): Promise<AnyDTO> {
+    return new AnyDTO();
+  }
+}
+
+const anyObject: AnyClass = {
+  anyMethod: jest.fn(),
+};
+
+describe("Any describe", () => {
+  it("should return any value", async () => {
+    spyOn(anyObject, "anyMethod").mockResolvedValue({ anyField: "any_value" });
+    const anyValue = await anyObject.anyMethod();
+
+    expect(anyValue).toEqual({ anyField: "any_value" });
+  });
+});
+
+const mockSomething = mock((): string => "hi");
+mockSomething.mockImplementation(() => "hello");
+mockSomething.mockReturnValue("hello");