diff --git a/test/unittest/external_file_access_test.cpp b/test/unittest/external_file_access_test.cpp
index 4ad0e31e8ff8f15125ae36ffa25646cc1f9d801a..d322638597dcc2ee3b6cd9b77d7253d790878a25 100644
--- a/test/unittest/external_file_access_test.cpp
+++ b/test/unittest/external_file_access_test.cpp
@@ -4560,4 +4560,25 @@ HWTEST_F(FileExtensionHelperTest, external_file_access_Query_0007, testing::ext:
     }
     GTEST_LOG_(INFO) << "FileExtensionHelperTest-end external_file_access_Query_0007";
 }
+
+HWTEST_F(JsFileAccessExtAbility, js_file_access_ext_ability_OpenFile_0000, testing::ext::TestSize.Level1) {
+    GTEST_LOG_(INFO) << "JsFileAccessExtAbilityTest-begin js_file_access_ext_ability_OpenFile_0000";
+    try{
+    // 设置参数
+    Uri uri("/data");
+    int flags = WRITE_READ;
+    int fd;
+
+    // 调用函数
+    JsFileAccessExtAbility ability;
+    int result = ability.OpenFile(uri, flags, fd);
+
+    // 验证结果
+    EXPECT_EQ(result, ERR_OK);
+    EXPECT_GE(fd, 0); // 验证文件描述符有效
+    } catch(...){
+        GTEST_LOG_(ERROR) << "js_file_access_ext_ability_OpenFile_0000 occurs an exception.";
+    }
+    GTEST_LOG_(INFO) << "JsFileAccessExtAbilityTest-end js_file_access_ext_ability_OpenFile_0000";
+}
 } // namespace
\ No newline at end of file