diff --git a/app/test/conftest.py b/app/test/conftest.py
index 37c0209..43babc3 100644
--- a/app/test/conftest.py
+++ b/app/test/conftest.py
@@ -15,16 +15,6 @@ def driver():
     return webdriver.Edge()  # uncomment this line if you wish to run the test on your laptop
 
 
-@pytest.fixture
-def UNAME():
-    return 'lanhui'
-
-
-@pytest.fixture
-def PASSWORD():
-    return 'l0ve1t'
-
-
 @pytest.fixture
 def restore_sqlite_database():
     '''
diff --git a/app/test/test_bug544_tangxinyuan.py b/app/test/test_bug544_tangxinyuan.py
index 0e55daa..7e6902d 100644
--- a/app/test/test_bug544_tangxinyuan.py
+++ b/app/test/test_bug544_tangxinyuan.py
@@ -4,6 +4,8 @@ from selenium.webdriver.common.by import By
 from selenium.webdriver.support.ui import WebDriverWait
 from selenium.webdriver.support import expected_conditions as EC
 
+from app.test.helper import signup
+
 
 def has_punctuation(s):
     return any(c in string.punctuation for c in s)
@@ -27,9 +29,9 @@ def select_valid_word(driver):
     return valid_word
 
 
-def test_save_selected_word(driver, URL, UNAME, PASSWORD):
+def test_save_selected_word(driver, URL):
     try:
-        login(driver, URL, UNAME, PASSWORD)
+        username, password = signup(URL, driver)
         word = select_valid_word(driver)
         stored_words = driver.execute_script('return localStorage.getItem("selectedWords");')
         assert word == stored_words, "Selected word not saved to localStorage correctly"
@@ -44,12 +46,8 @@ def test_save_selected_word(driver, URL, UNAME, PASSWORD):
         driver.execute_script("window.open('');")
         driver.switch_to.window(driver.window_handles[-1])  # 切换到新打开的标签页
 
-        login(driver, URL, UNAME, PASSWORD)
+        login(driver, URL, username, password)
         textarea_content = driver.find_element(By.ID, 'selected-words').get_attribute('value')
         assert word == textarea_content, "Selected word not preserved after re-login"
     finally:
         driver.quit()
-
-
-if __name__ == '__main__':
-    test_save_selected_word(driver, URL, UNAME, PASSWORD)  # noqa: F821