Android 使用Robolectric 3.0测试片段的视图

在我的应用程序中，我有一个登录名和一个注册片段。我想测试他们的观点，即编辑文本是否有提示和按钮。我将把这里的登录片段，其中包含两个编辑文本和一个按钮。还有一个Web服务，但我将在稍后测试它

public class LoginFragment extends Fragment {

Button loginButton;
EditText etName,etPass;
String login_name;
String login_pass;
private SessionManager session;
TextView forgotPassBtn;

public LoginFragment() {
    // Required empty public constructor
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment

    View v = inflater.inflate(R.layout.fragment_login, container, false);
    Toolbar myToolbar = (Toolbar) v.findViewById(R.id.toolbar);
    ((AppCompatActivity)getActivity()).setSupportActionBar(myToolbar);
    setHasOptionsMenu(true);
    etName = (EditText)v.findViewById(R.id.user_name);
    etPass = (EditText)v.findViewById(R.id.user_pass);
    loginButton = (Button) v.findViewById(R.id.loginButton);

    login_name = etName.getText().toString();
    login_pass = etName.getText().toString();

    forgotPassBtn = (TextView) v.findViewById(R.id.forgotPass);

    session = new SessionManager(getActivity());

    if (session.isLoggedIn()) {
        // User is already logged in. Take him to main activity
        Intent intent = new Intent(getActivity(), Welcome.class);
        startActivity(intent);
        getActivity().finish();
    }
    loginButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            login_name = etName.getText().toString();
            login_pass = etPass.getText().toString();

            SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(getActivity());
            SharedPreferences.Editor editor = settings.edit();

            if(login_name.isEmpty() && login_pass.isEmpty()) {
                Toast.makeText(getActivity(),"Username η κωδικός είναι κενό",Toast.LENGTH_SHORT).show();
            }else {
                editor.putString("id", "");
                editor.putString("user_name", login_name);
                editor.putString("user_pass", login_pass);
                editor.commit();

                loginUser(login_name, login_pass);
            }
        }
    });
   return v;

}



private void loginUser(final String userName,
                       final String password) {
    /*
    Tag used to cancel the request
    HttpsTrustManager.sssMethod();
    */
    String tag_string_req = "req_register";


    StringRequest strReq = new StringRequest(Request.Method.POST,
            Config.URL_LOGIN, new Response.Listener<String>() {

        @Override
        public void onResponse(String response) {
            Log.d("Response", "Register Response: " + response.toString());

            try {
                JSONObject jsonObject = new JSONObject(response);
                if (jsonObject.getString("result").equals("success")) {
                    session.setLogin(true);
                    Toast.makeText(getActivity(), jsonObject.getString("message"), Toast.LENGTH_LONG).show();
                    Intent intent = new Intent(getActivity(),
                            Welcome.class);
                    startActivity(intent);
                    getActivity().finish();
                }

                else if (jsonObject.getString("result").equals("fail")) {

                    Toast.makeText(getActivity(),jsonObject.getString("message"), Toast.LENGTH_LONG).show();

                }

            }catch(JSONException e){
                e.printStackTrace();
            }
            // Launch login activity


            //Toast.makeText(getApplicationContext(), "User successfully registered. Try login now!", Toast.LENGTH_LONG).show();

        }


    }, new Response.ErrorListener() {

        @Override
        public void onErrorResponse(VolleyError error) {
            Log.e("Error", "Registration Error: " + error.getMessage());
            Toast.makeText(getActivity(),
                    error.getMessage(), Toast.LENGTH_LONG).show();

        }
    }) {

        @Override
        protected Map<String, String> getParams() {
            // Posting params to register url
            Map<String, String> params = new HashMap<String, String>();
            //params.put("id","");
            params.put("user_name", userName);
            params.put("user_pass", password);

            return params;
        }

    };

    // Adding request to request queue
    AppController.getInstance().addToRequestQueue(strReq, tag_string_req);
}

}

getEditText方法是在另一个类中定义的

public class ViewLocator {
public static TextView getTextView(Activity activity, int viewId){
    return ((TextView)activity.findViewById(viewId));
}
public static EditText getEditText(Activity activity, int viewId){
    return ((EditText)activity.findViewById(viewId));
}
public static Button getButton(Activity activity, int viewId){
    return ((Button) activity.findViewById(viewId));
}

}

运行LoginFragmentTest时，shouldHaveUserNameEntry（）方法出现错误

如何成功地测试编辑文本视图

通行证。错误出现在

        assertThat(nameEntry.getHint().toString(),equalTo(ResourceLocator.getString(R.string.login_username)));

谢谢

---

Theo.

在这里，您将登录片段添加到由startFragment方法初始化的AppCompactActivity上

@Test
public void loginFragmentShouldNotBeNull() {
 LoginFragment loginFragment = new LoginFragment();
 startFragment(loginFragment, AppCompatActivity.class);
 assertNotNull(loginFragment);   
}

然后尝试在mainActivity上查找用户名字段。您在AppCompatActivity上添加了片段，而不是在MainActivity上（我假设您在MainActivity中动态添加了片段）。所以EditText不存在

@Test
public void shouldHaveUserNameEntry() throws Exception {
EditText nameEntry = getEditText(activity,R.id.user_name);
assertViewIsVisible(nameEntry);
            assertThat(nameEntry.getHint().toString(),equalTo(ResourceLocator.getString(R.string.login_username)));
}

我认为你不需要测试你的主要活动。您可以使用SupportFragmentTestUtil中的startVisibleFragment方法在AppActivity上初始化您的片段

@RunWith(RobolectricGradleTestRunner.class)
@Config(constants = BuildConfig.class,sdk = 21)
public class LoginFragmentTest {

private LoginFragment mLoginFragment = new LoginFragment();

@Before
public void setUp() throws Exception {
    SupportFragmentTestUtil.startVisibleFragment(mLoginFragment);
}

@Test
public void shouldHaveUserNameEntry() throws Exception{
    EditText nameEntry = mLoginFragment.getActivity().findViewById(R.id.user_name);
    assertViewIsVisible(nameEntry);
    assertThat(nameEntry.getHint().toString(),equalTo(RuntimeEnvironment.application.getResources().getString(R.string.login_username)));
}

---

我想

getHint（）

返回null。它是浮动编辑测试标签吗？如果是这样的话，您应该从布局而不是编辑文本中询问提示。请指出您的设置中到底有什么不同，以及这应该如何解决问题。我已经完成了我的回答。FragmentTestUtil现在不推荐使用，您应该改为使用FragmentScenario

@Test
public void loginFragmentShouldNotBeNull() {
 LoginFragment loginFragment = new LoginFragment();
 startFragment(loginFragment, AppCompatActivity.class);
 assertNotNull(loginFragment);   
}

@Test
public void shouldHaveUserNameEntry() throws Exception {
EditText nameEntry = getEditText(activity,R.id.user_name);
assertViewIsVisible(nameEntry);
            assertThat(nameEntry.getHint().toString(),equalTo(ResourceLocator.getString(R.string.login_username)));
}

@RunWith(RobolectricGradleTestRunner.class)
@Config(constants = BuildConfig.class,sdk = 21)
public class LoginFragmentTest {

private LoginFragment mLoginFragment = new LoginFragment();

@Before
public void setUp() throws Exception {
    SupportFragmentTestUtil.startVisibleFragment(mLoginFragment);
}

@Test
public void shouldHaveUserNameEntry() throws Exception{
    EditText nameEntry = mLoginFragment.getActivity().findViewById(R.id.user_name);
    assertViewIsVisible(nameEntry);
    assertThat(nameEntry.getHint().toString(),equalTo(RuntimeEnvironment.application.getResources().getString(R.string.login_username)));
}