Question

引用此SO question，我尝试保存共享首选项，但我的断言失败了。

这是我的测试类

@Test
public void testSharedPreferences(){
activity=actController.create().get();
 loginButton=(Button)activity.findViewById(R.id.loginButton);
 userName=(EditText)activity.findViewById(R.id.userName);
 userPassword=(EditText)activity.findViewById(R.id.userPassword);
 sharedPrefs =    ShadowPreferenceManager.getDefaultSharedPreferences(Robolectric.application.getApplicationContext());
 sharedPrefs.edit().putString("userName", "user1").commit();

 assertThat(userName.getText().toString(),equalTo("user1"));

}

这是测试类中的代码 -

public class LoginActivity extends Activity {
private EditText userName,userPassword;
 @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
       SharedPreferences sharedPreferences =PreferenceManager.getDefaultSharedPreferences(this);
         final SharedPreferences.Editor editor=sharedPreferences.edit();
         String name = sharedPreferences.getString("userName", "");
         if (!"".equalsIgnoreCase(name)) {
            userName.setText(name);
        }
}

Assertion失败，它说预期"user1"但找到""。

Answer 1

您的测试是首先创建活动（并过早触发onCreate()），因此您对SharedPrefs的更改无效。试试这个：

@Test
public void testSharedPreferences() {
     // First set up the shared prefs
     sharedPrefs = ShadowPreferenceManager.getDefaultSharedPreferences(Robolectric.application.getApplicationContext());
     sharedPrefs.edit().putString("userName", "user1").commit();

     // Create the activity - this will call onCreate()
     activity=actController.create().get();
     loginButton=(Button)activity.findViewById(R.id.loginButton);
     userName=(EditText)activity.findViewById(R.id.userName);
     userPassword=(EditText)activity.findViewById(R.id.userPassword);

     // Verify text
     assertThat(userName.getText().toString(),equalTo("user1"));

}

Robolectric断言失败了共享偏好android

1 个答案: