From 7c37606672e066492b6e6ba8a99aeb1b2ea77b0e Mon Sep 17 00:00:00 2001
From: shulaoda <laipichan@qq.com>
Date: Tue, 15 Oct 2024 12:54:21 +0800
Subject: [PATCH] fix(expect): correct behavior of toThrowError with empty
 string parameter

---
 packages/expect/src/jest-expect.ts | 3 ++-
 test/core/test/jest-expect.test.ts | 7 +++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/packages/expect/src/jest-expect.ts b/packages/expect/src/jest-expect.ts
index 3d8a232c06ef..56a1a83b3ef3 100644
--- a/packages/expect/src/jest-expect.ts
+++ b/packages/expect/src/jest-expect.ts
@@ -643,7 +643,8 @@ export const JestChaiExpect: ChaiPlugin = (chai, utils) => {
         || typeof expected === 'undefined'
         || expected instanceof RegExp
       ) {
-        return this.throws(expected)
+        // Fixes the issue related to `chai` <https://github.com/vitest-dev/vitest/issues/6618>
+        return this.throws(expected === '' ? /^$/ : expected)
       }
 
       const obj = this._obj
diff --git a/test/core/test/jest-expect.test.ts b/test/core/test/jest-expect.test.ts
index 620e0240bc02..554bfa6982b4 100644
--- a/test/core/test/jest-expect.test.ts
+++ b/test/core/test/jest-expect.test.ts
@@ -106,6 +106,13 @@ describe('jest-expect', () => {
       // eslint-disable-next-line no-throw-literal
       throw ''
     }).toThrow(/^$/)
+    expect(() => {
+      // eslint-disable-next-line no-throw-literal
+      throw ''
+    }).toThrow('')
+    expect(() => {
+      throw new Error('error')
+    }).not.toThrowError('')
     expect([1, 2, 3]).toHaveLength(3)
     expect('abc').toHaveLength(3)
     expect('').not.toHaveLength(5)