Custom Robolectric Runner

[Jan Carlo]

Hi!

I have a project that requires creation of a custom Robolectric runner that will inject this custom Context class:

@Implements(Context.class)

public class CustomContext
{

      private final SharedPreferences preferences = new TestSharedPreferences(new HashMap<String, Map<String, Object>>(), "__default__", Context.MODE_PRIVATE);

      @Implementation
      public SharedPreferences getSharedPreferences(String name, int mode)
      {
            System.out.println("ShadowSharedPreferenceSavableContext");
            return preferences;
      }

}

I'm just starting to learn Robolectric. I hope that you can help me with my problem. Thank you

Carlo

[Victor Ng]

I don't understand your question.

Why don't you just use a ContextWrapper?

vic

[Jan Carlo]

How am I going to use that? I already tried searching documents on how to use it but I failed.

[Jan Carlo]

I wanted to ask on how to create a custom runner that can inject the custom Context class. I'm hoping that you can help me. Thank you for your replies

[Victor Ng]

It's still not clear what you're trying to do.  You need to post a clear description of what you are trying to accomplish with some code that people can read to get an understanding of what you are describing.

On Wed, Nov 26, 2014 at 11:35 PM, Jan Carlo <jancarl...@gmail.com> wrote:

I wanted to ask on how to create a custom runner that can inject the custom Context class. I'm hoping that you can help me. Thank you for your replies

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[Jan Carlo]

I need to inject the custom shadow so I can use it whenever I will call on context.getSharedPreferences()

Here is my code so far, no errors found but the string "ShadowSharedPreferenceSavableContext" didn't show at all

public class CustomTestRunner extends RobolectricTestRunner {

private static final List<String> CUSTOM_SHADOW_TARGETS = Collections.unmodifiableList(Arrays.asList("com.myPackage.android.CustomContext"));

public CustomTestRunner(Class<?> testClass) throws InitializationError {

super(testClass);

}

@Override

protected ShadowMap createShadowMap() {

return super.createShadowMap().newBuilder().addShadowClass(CustomContext.class).build();

}

@Override

public Setup createSetup() {

return new CustomSetup();

}

public class CustomSetup extends Setup {

@Override

public boolean shouldInstrument(ClassInfo classInfo) {

return CUSTOM_SHADOW_TARGETS.contains(classInfo.getName()) || super.shouldInstrument(classInfo);

}

}

}

[Erich Douglass]

You shouldn't need to create a custom runner or use a custom Context implementation (the latter would most certainly cause problems with Robolectric) to add shared preferences. You should be able to call PreferenceManager.getDefaultSharedPreferences(Robolectric.application) and add/remove things just like you would in an application. Unfortunately, like others have said, it's hard to provide more specific information unless you can tell us what you're trying to test.