From 5e584e9a547b9290ae7a6800d914223fe0c3d8a6 Mon Sep 17 00:00:00 2001
From: Don Isaac <donald.isaac@gmail.com>
Date: Fri, 10 Jan 2025 05:05:05 -0600
Subject: [PATCH] fix(test): toThrow() === toThrow('') (#16308)

---
 src/bun.js/test/expect.zig         |  4 ++++
 test/cli/test/expectations.test.ts | 11 +++++++++++
 2 files changed, 15 insertions(+)
 create mode 100644 test/cli/test/expectations.test.ts

diff --git a/src/bun.js/test/expect.zig b/src/bun.js/test/expect.zig
index f90c8bbd15f50a..f09abb158fb256 100644
--- a/src/bun.js/test/expect.zig
+++ b/src/bun.js/test/expect.zig
@@ -2172,6 +2172,10 @@ pub const Expect = struct {
                         break :brk innerConstructorValue;
                     }
                 }
+            } else if (value.isString()) {
+                // `.toThrow("") behaves the same as `.toThrow()`
+                const s = value.toString(globalThis);
+                if (s.length() == 0) break :brk .zero;
             }
             break :brk value;
         };
diff --git a/test/cli/test/expectations.test.ts b/test/cli/test/expectations.test.ts
new file mode 100644
index 00000000000000..20698874daf454
--- /dev/null
+++ b/test/cli/test/expectations.test.ts
@@ -0,0 +1,11 @@
+describe(".toThrow()", () => {
+  it(".toThrow() behaves the same as .toThrow('')", () => {
+    expect(() => {
+      throw new Error("test");
+    }).toThrow();
+
+    expect(() => {
+      throw new Error("test");
+    }).toThrow("");
+  });
+});