Unit testing on Android Studio: "not mocked" error
Solution 1
I couldn't get Instrumentation tests to work, using Android Studio, I guess they're still finalising the implementation. And since it needs to run on the emulator, there are faster options: regular unit tests.
Thanks to Jared's tips, I switched to Robolectric, which is easy to use on Android Studio.
androidTestCompile 'junit:junit:4.12'
androidTestCompile "org.robolectric:robolectric:3.0"
and
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.RuntimeEnvironment;
import org.robolectric.RobolectricTestRunner;
import static junit.framework.TestCase.assertEquals;
@RunWith(RobolectricTestRunner.class)
public class AppPreferencesTest {
AppPreferences preferences;
@Before
public void setUp() throws Exception {
preferences = new AppPreferences(RuntimeEnvironment.application.getApplicationContext());
}
@Test
public void testIsNotificationsEnabled_Default() throws Exception {
assertEquals(true, preferences.isNotificationsEnabled());
}
...
The info here seems to be correct at this time: http://nenick-android.blogspot.nl/2015/02/android-studio-110-beta-4-and.html But will probably deprecate again in the near future, as all the info I found on this subject using google deprecated already.
Solution 2
I see you have updated your question.
Please take a look at the source of this SharedPreferencesMockContext.java
: https://github.com/applicake/Beandroid/blob/master/Beanstalk%20Android%20ClientTest/src/com/applicake/beanstalkclient/test/SharedPreferencesMockContext.java.
Here is the test: https://github.com/applicake/Beandroid/blob/master/Beanstalk%20Android%20ClientTest/src/com/applicake/beanstalkclient/test/NotificationsTests.java
Here is a snippet show how they created their Mock:
@Override
protected void setUp() throws Exception {
final SharedPreferencesMockContext mockContext = new SharedPreferencesMockContext(getContext());
MockApplication mockApplication = new MockApplication(){
@Override
public Context getApplicationContext() {
Log.d("tests", "Im here");
return mockContext;
}
};
context = mockContext;
setApplication(mockApplication);
prefs = PreferenceManager.getDefaultSharedPreferences(context);
prefs.edit().clear().commit();
super.setUp();
}
I ran into this error last night. Try using "MockContext
".
public class AppPreferencesTest extends InstrumentationTestCase {
AppPreferences preferences;
Context context;
@Before
public void setUp() throws Exception {
context = new MockContext();
preferences = new AppPreferences(context);
}
Please see other examples here: https://stackoverflow.com/a/29063736/950427
Frank
Updated on July 09, 2022Comments
-
Frank almost 2 years
I am new to Android Studio. I am using Android Studio 1.2 preview 2, gradle 2.2.1 and gradle plugin 1.1.0.
I cannot get around this error, when trying to run my unit tests:
java.lang.RuntimeException: Method getInstrumentation in android.test.InstrumentationTestCase not mocked
This is my test class:
public class AppPreferencesTest extends InstrumentationTestCase { AppPreferences preferences; @Before public void setUp() throws Exception { preferences = new AppPreferences(getInstrumentation().getTargetContext()); } ...
In my build.gradle:
testCompile 'junit:junit:4.12'
I tried adding this
testOptions { unitTests.returnDefaultValues = true }
because that was mentioned in the steps that I followed at http://tools.android.com/tech-docs/unit-testing-support but it does not fix it.
I also tried creating a MockContext:
preferences = new AppPreferences(new MockContext());
but the constructor of AppPreferences than gives an error
public AppPreferences(Context context) { preferences = PreferenceManager.getDefaultSharedPreferences( context); }
...
RuntimeException: Method getDefaultSharedPreferences in android.preference.PreferenceManager not mocked.