Espresso Matcher for Nested RecyclerView

Question

So here's a breakdown of my hierarchy:

RecyclerView --> LinearLayout --> RecyclerView --> FrameLayout -> FrameLayout

Here's a screenshot:

I would like to be able to verify the FrameLayout with the text is displayed. This what I have tried so far:

onView(withRecyclerView(R.id.container_list).atPositionOnView(0, R.id.row_content))
                .check(matches(withRecyclerView(R.id.row_content).atPositionOnView(0, R.id.info_field)))
                .check(matches(isDisplayed()));

But it causes an AmbiguousViewMatcherException. Any ideas on how to verify that nested view? Should mention I'm using the ViewMatcher from here. Thanks.

score 15 · Accepted Answer · answered Dec 07 '15 at 19:05

15

I was able to verify it using the explanation @manidesto provided above with some slight changes.

onView(allOf(isDescendantOfA(withRecyclerView(R.id.container_list).atPosition(0)),
                isDescendantOfA(withRecyclerView(R.id.row_content).atPosition(0)),
                withId(R.id.info_field)))
                .check(matches(isDisplayed()));

Main enhancement is I used the allOf matcher to specify multiple characteristics of the view I was trying to verify.

answered Dec 07 '15 at 19:05

brwngrldev

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1

How would you test click on the item inside the 2nd recyclerview? – Parag Pawar Aug 05 '20 at 09:30
1

As mentioned here https://stackoverflow.com/questions/62750213/how-to-test-nested-recyclerview-recyclerview-inside-recyclerview-with-espresso this code only works with 0 value for atPosition. – Martin H. Mar 23 '21 at 11:31

okmanideep · Answer 2 · 2015-12-07T18:57:49.543

4

Try this

onView(withRecyclerView(R.id.container_list).atPositionOnView(0, R.id.row_content))
    .check(matches(withChild(withId(R.id.info_field))))

This just checks whether the View(R.id.row_content) has a child with id R.id.info_field

Note:

.check() takes in a ViewAssertion which means that the view matched by your ViewMatcher given to the onView() method is just asserted by the ViewAssertion

So when you do

onView(withRecyclerView(R.id.container_list).atPositionOnView(0, R.id.row_content))
    .check(matches(withChild(withId(R.id.info_field))))
    .check(matches(isDisplayed()))

the ViewMatcher - isDisplayed() is applied to R.id.row_content matched inside onView() not the R.id.info_field asserted to matching in .check() call

edited Dec 07 '15 at 18:57

answered Dec 07 '15 at 18:15

okmanideep

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This new edit doesn't work because of the `withChild` inside of the `check` method. – brwngrldev Dec 07 '15 at 18:37
sorry. I missed a `matches()` – okmanideep Dec 07 '15 at 18:40
@adavis hope you find the note useful – okmanideep Dec 07 '15 at 19:03
yes, thanks for your explanation, that helped me focus on the issue better! – brwngrldev Dec 07 '15 at 19:06

Espresso Matcher for Nested RecyclerView

2 Answers2

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