在我的应用中，我有一个登录名和一个寄存器片段。我想测试他们的观点，即编辑文本是否有提示，以及他们的按钮。我将通过登录片段放在这里，其中包含两个editi文本和一个按钮。还有一个web服务，但我稍后会对它进行测试。
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);
}
}
现在我正在使用Robolectric进行一些测试。
@RunWith(RobolectricGradleTestRunner.class)
@Config(constants = BuildConfig.class,sdk = 21)
public class LoginFragmentTest {
MainActivity activity;
Button loginButton;
@Before
public void setUp() throws Exception {
activity = Robolectric.setupActivity(MainActivity.class);
loginButton = getButton(activity,R.id.registerBtn);
}
@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)));
}
}
getEditText方法在另一个类中定义。
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));
}
}
当我运行LoginFragmentTest时，我在shouldHaveUserNameEntry（）方法上出现错误
java.lang.NullPointerException
at team.football.ael.LoginFragmentTest.shouldHaveUserNameEntry(LoginFragmentTest.java:50)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.robolectric.RobolectricTestRunner$HelperTestRunner$1.evaluate(RobolectricTestRunner.java:527)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:265)
at org.robolectric.RobolectricTestRunner.runChild(RobolectricTestRunner.java:191)
at org.robolectric.RobolectricTestRunner.runChild(RobolectricTestRunner.java:56)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.robolectric.RobolectricTestRunner$1.evaluate(RobolectricTestRunner.java:157)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:234)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:74)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
如何成功测试编辑文本视图的任何想法？
assertViewIsVisible(nameEntry);
通过。
中出现错误 assertThat(nameEntry.getHint().toString(),equalTo(ResourceLocator.getString(R.string.login_username)));
谢谢，
西奥。
答案 0 :(得分：4)
在这里，您可以在由startFragment方法
初始化的AppCompactActivity上添加登录片段@Test
public void loginFragmentShouldNotBeNull() {
LoginFragment loginFragment = new LoginFragment();
startFragment(loginFragment, AppCompatActivity.class);
assertNotNull(loginFragment);
}
然后尝试在mainActivity上找到user_name字段。您在AppCompatActivity而不是MainActivity上添加了片段（我假设您在MainActivity中动态添加片段）。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)));
}
我认为您不需要测试您的MainActivity。您可以使用SupportFragmentTestUtil中的方法startVisibleFragment，它在AppCompatActivity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)));
}