diff --git a/app/test/test_bug551_DingZeYu.py b/app/test/test_bug551_DingZeYu.py
index 2641373..8fed439 100644
--- a/app/test/test_bug551_DingZeYu.py
+++ b/app/test/test_bug551_DingZeYu.py
@@ -6,31 +6,14 @@ from selenium.webdriver.common.by import By
 from selenium.webdriver.common.alert import Alert
 from selenium.webdriver.support import expected_conditions as EC
 from selenium.webdriver.support.wait import WebDriverWait
-
+from helper import signup
 
 def test_bug551():
     driver = webdriver.Edge()
     driver.maximize_window()
     driver.get("http://127.0.0.1:5000/")
 
-    driver.find_element(By.CSS_SELECTOR, 'a[href="/login"]').click()
-    driver.find_element(By.ID, 'username').send_keys('dzy')
-    driver.find_element(By.ID, 'password').send_keys('123456')
-    driver.find_element(By.CLASS_NAME, 'btn').click()
-
-    try:
-        alert = WebDriverWait(driver, 10).until(EC.alert_is_present())
-        alert.accept()
-        driver.find_element(By.CSS_SELECTOR, 'a[href="/signup"]').click()
-        driver.find_element(By.ID, 'username').send_keys('dzy')
-        driver.find_element(By.ID, 'password').send_keys('123456')
-        driver.find_element(By.ID, 'password2').send_keys('123456')
-        driver.find_element(By.CLASS_NAME, 'btn').click()
-        alert = WebDriverWait(driver, 10).until(EC.alert_is_present())
-        alert.accept()
-
-    except:
-        pass
+    username, password = signup(URL, driver)
 
     article = driver.find_element(By.ID, 'article')
     actions = ActionChains(driver)