java– 使用Firebase的Android Studio中的JUnit测试

概述我想在AndroidStudio中为此类编写单元测试,但由于使用了Firebase,我在创建测试以覆盖userignin()和getSignedinUserprofile()时遇到问题.有人对这个有经验么？publicclassLoginActivityextendsAppCompatActivityimplementsView.OnClickListener{privateButtonbuttonSig

我想在Android Studio中为此类编写单元测试,但由于使用了Firebase,我在创建测试以覆盖userignin()和getSignedinUserprofile()时遇到问题.有人对这个有经验么？

public class LoginActivity extends AppCompatActivity implements VIEw.OnClickListener{private button buttonSignIn;private EditText editTextEmail;private EditText editTextPassword;private TextVIEw textVIEwSignUp;private ProgressDialog mProgressDialog;private FirebaseAuth mfireBaseAuth;private DatabaseReference mDatabase;private String userID;private FirebaseUser firebaseUser;@OverrIDeprotected voID onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentVIEw(R.layout.activity_login);    FirebaseApp.initializeApp(this);    mfireBaseAuth = FirebaseAuth.getInstance();    mDatabase = FirebaseDatabase.getInstance().getReference();    mProgressDialog = new ProgressDialog(this);    editTextEmail = (EditText) findVIEwByID(R.ID.editTextEmail);    editTextPassword = (EditText) findVIEwByID(R.ID.editTextPassword);    buttonSignIn = (button) findVIEwByID(R.ID.buttonSignIn);    textVIEwSignUp = (TextVIEw) findVIEwByID(R.ID.textVIEwSignUp);    buttonSignIn.setonClickListener(this);    textVIEwSignUp.setonClickListener(this);}@OverrIDepublic voID onClick(VIEw v) {    if(v == buttonSignIn){        usersignin();}    if(v==textVIEwSignUp){        startActivity(new Intent(this, Registeractivity.class));}}public voID usersignin() {    String email = editTextEmail.getText().toString().trim();    String password = editTextPassword.getText().toString().trim();    if(TextUtils.isEmpty(email)){        Toast.makeText(this, "Please enter Email", Toast.LENGTH_SHORT).show();        return;    }    if(TextUtils.isEmpty(password)){        Toast.makeText(this, "Please enter password", Toast.LENGTH_SHORT).show();        return;    }    mProgressDialog.setMessage("Logging in. Please wait...");    mProgressDialog.show();    mfireBaseAuth.signInWithEmailAndPassword(email, password).addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {        @OverrIDe        public voID onComplete(@NonNull Task<AuthResult> task) {            mProgressDialog.dismiss();            if(task.isSuccessful()){                getSignedInUserProfile();            }        }    });}public voID getSignedInUserProfile() {    DatabaseReference reference = mDatabase;//.child("eduback-2feef");    firebaseUser = FirebaseAuth.getInstance().getCurrentUser();    userID = firebaseUser.getUID();    reference.child("Users").child(userID).child("User info").addListenerForSingleValueEvent(new ValueEventListener() {        @OverrIDe        public voID onDataChange(DataSnapshot dataSnapshot) {            User user = dataSnapshot.getValue(User.class);            if(user != null) {                // Save if the user is student or prof in shared prefs.                PreferenceHelper helper = new PreferenceHelper(getBaseContext());                helper.setIsstudent(user.isstudent);                checkStudentOrProfessor(user);            }        }        @OverrIDe        public voID onCancelled(DatabaseError databaseError) {            // Ups vis error        }    });}public voID checkStudentOrProfessor(User user) {    Intent i;    if (user.isstudent ) {        i = new Intent(this, MainActivityStudent.class);    } else {        i = new Intent(this, MainActivityProfessor.class);    }    startActivity(i);}

解决方法:

您可以使用Mockito和powermockito来模拟Firebase依赖项.对于模拟静态函数(如FirebaseDatabase.getInstance()),必须使用powermockrunner来运行测试,但稍后可以委托给不同的运行程序.

package com.test.firebasetest;import com.Google.firebase.database.DataSnapshot;import com.Google.firebase.database.DatabaseReference;import com.Google.firebase.database.FirebaseDatabase;import com.Google.firebase.database.ValueEventListener;import org.junit.Before;import org.junit.Test;import org.junit.runner.RunWith;import org.mockito.Mockito;import org.mockito.invocation.InvocationOnMock;import org.mockito.stubbing.Answer;import org.powermock.API.mockito.powermockito;import org.powermock.core.classloader.annotations.PrepareForTest;import org.powermock.modules.junit4.powermockrunner;import static org.mockito.Matchers.any;import static org.mockito.Matchers.anyString;import static org.mockito.Mockito.doAnswer;import static org.mockito.Mockito.when;@RunWith(powermockrunner.class)@powermockrunnerDelegate(JUnit4.class)@PrepareForTest({ FirebaseDatabase.class})public class LoginActivityTest {  private DatabaseReference mockedDatabaseReference;  @Before  public voID before() {    mockedDatabaseReference = Mockito.mock(DatabaseReference.class);    FirebaseDatabase mockedFirebaseDatabase = Mockito.mock(FirebaseDatabase.class);    when(mockedFirebaseDatabase.getReference()).thenReturn(mockedDatabaseReference);    powermockito.mockStatic(FirebaseDatabase.class);    when(FirebaseDatabase.getInstance()).thenReturn(mockedFirebaseDatabase);  }  @Test  public voID getSignedInUserProfiletest() {    when(mockedDatabaseReference.child(anyString())).thenReturn(mockedDatabaseReference);    doAnswer(new Answer<VoID>() {      @OverrIDe      public VoID answer(InvocationOnMock invocation) throws Throwable {        ValueEventListener valueEventListener = (ValueEventListener) invocation.getArguments()[0];        DataSnapshot mockedDataSnapshot = Mockito.mock(DataSnapshot.class);        //when(mockedDataSnapshot.getValue(User.class)).thenReturn(testOrMockedUser)        valueEventListener.onDataChange(mockedDataSnapshot);        //valueEventListener.onCancelled(...);        return null;      }    }).when(mockedDatabaseReference).addListenerForSingleValueEvent(any(ValueEventListener.class));    new LoginActivity().getSignedInUserProfile();    // check preferences are updated  }}

您需要为模块build.gradle添加适当的依赖项：

testCompile 'junit:junit:4.12'testCompile 'org.powermock:powermock:1.6.5'testCompile 'org.powermock:powermock-module-junit4:1.6.5'testCompile 'org.powermock:powermock-API-mockito:1.6.5'

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