RoboGuiceTest.java

package roboguice;

import static org.hamcrest.CoreMatchers.equalTo;
import static org.junit.Assert.assertThat;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.Robolectric;
import org.robolectric.RobolectricTestRunner;

import roboguice.activity.RoboActivity;

import com.google.inject.Stage;
import com.google.inject.AbstractModule;

import android.app.Activity;

@RunWith(RobolectricTestRunner.class)
public class RoboGuiceTest {

    @Before
    public void setup() {
        RoboGuice.injectors.clear();
    }

    @Test
    public void destroyInjectorShouldRemoveContext() {
        final Activity activity = Robolectric.buildActivity(RoboActivity.class).get();
        RoboGuice.getInjector(activity);

        assertThat(RoboGuice.injectors.size(), equalTo(1));

        RoboGuice.destroyInjector(activity);
        assertThat(RoboGuice.injectors.size(), equalTo(1));

        RoboGuice.destroyInjector(Robolectric.application);
        assertThat(RoboGuice.injectors.size(), equalTo(0));
    }

    @Test
    public void resetShouldRemoveContext() {
        final Activity activity = Robolectric.buildActivity(RoboActivity.class).get();
        RoboGuice.getInjector(activity);

        assertThat(RoboGuice.injectors.size(), equalTo(1));

        RoboGuice.Util.reset();
        assertThat(RoboGuice.injectors.size(), equalTo(0));
    }

    // https://github.com/roboguice/roboguice/issues/87
    @Test
    public void shouldOnlyCallConfigureOnce() {
        final int[] i = {0};
        RoboGuice.getOrCreateBaseApplicationInjector(Robolectric.application, Stage.DEVELOPMENT, RoboGuice.newDefaultRoboModule(Robolectric.application), new AbstractModule() {
            @Override
            protected void configure() {
                ++i[0];
            }
        });
        assertThat(i[0],equalTo(1));
    }
}