Temporary fix to the codelab test

Change-Id: Ie12aaf8caffe84d7e27994e54824fbd0bdf9a960

Author: JoseAlcerreca

mobile/src/androidTest/java/com/google/samples/apps/iosched/tests/ui/CodelabTest.kt

@@ -29,8 +29,12 @@ import com.google.samples.apps.iosched.shared.data.FakeConferenceDataSource
 import com.google.samples.apps.iosched.tests.SetPreferencesRule
 import dagger.hilt.android.testing.HiltAndroidRule
 import dagger.hilt.android.testing.HiltAndroidTest
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.test.TestCoroutineDispatcher
+import kotlinx.coroutines.test.setMain
 import org.hamcrest.CoreMatchers.allOf
 import org.hamcrest.CoreMatchers.instanceOf
+import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
 import org.junit.runner.RunWith
@@ -55,6 +59,7 @@ class CodelabTest {
         onView(allOf(instanceOf(TextView::class.java), withParent(withId(R.id.toolbar))))
             .check(matches(withText(R.string.event_codelabs_title)))
         // One of the codelabs
+        Thread.sleep(400) // TODO: RecyclerView is async so it makes the test fail
         onView(withText(FakeConferenceDataSource.FAKE_CODELAB_TITLE)).check(matches(isDisplayed()))
     }
 }