Issue
Its been 2 weeks since I am studying Espresso and I could not grasp intending
and intended
. When do I use intending
and intended
? The provided example and online tutorials are not helping and researching the web is doing me more damage than good.
Semantically, for intellectual reference, why is it intend-ing
and the other intended
, this added more to the confusion. Is this another Google naming blunder or it's just me? These two methods really don't make sense.
I am misunderstanding its usage. I wanted to test if my activity A
launched activity B
. That's it. Here is my code:
@Test
public void shouldLaunchTagListActivity()
{
onView(withId(R.id.edittext_description_minimized))
.perform(click());
onView(withId(R.id.linearlayout_add_note_maximize))
.check(matches(isDisplayed()));
onView(withId(R.id.relativelayout_quick_action_button))
.check(matches(isDisplayed()));
onView(withId(R.id.imagebutton_tag))
.perform(click());
// should I intended or intending here?
// ???
intended(toPackage(HomeScreenActivity.class.getName()));
onView(withId(R.id.coordinatorlayout_tag_list))
.check(matches(isDisplayed()));
}
This test always passes even I supplant the intent with the wrong the target.
I can check if the other activity has been launched by checking if my target view is existing and was seen by the user. But now I am going to run on a different user story where I really need to check if the activity sent the request to launched another activity (my activity, not external).
Any explanation is greatly appreciated!
Solution
The difference is Intended
only verifies that an Intent was launched (what you want). Intending
will return a result when the Intent is launched.
For Intended
(if you want to check if the intent did actually launched your activity)
intended(hasComponent(TagListActivity.class.getName()));
This will fail if you press a button and launched, say, MyActivity, and you test intended
for TagListActivity. It will throw this following error:
android.support.test.espresso.base.DefaultFailureHandler$AssertionFailedWithCauseError: Wanted to match 1 intents. Actually matched 0 intents.
Now, if you were testing that onActivityResult
was handled properly, you would use Intending
and pass in an ActivityResult
similar to this:
Intent resultData = new Intent();
resultData.putExtra("resultData", "fancyData");
ActivityResult result = new ActivityResult(Activity.RESULT_OK, resultData);
intending(toPackage(HomeScreenActivity.class.getName())).respondWith(result));
// Perform action that throws the Intent
onView(withId(R.id.imagebutton_tag)).perform(click());
// Verify your Activity is in the state it should be here.
So in this case, if you were expecting "HomeScreenActivity" to return something, you would use Intending
.
Answered By - DeeV
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