CODEWITHSUNDEEP
androidandroid-espresso
Hesam
Hesam

Reputation: 53600

How to catch a View with Tag by Espresso in Android?

I have a PinCodeView that extends LinearLayout. I have following code in my init() method. DigitEditText extends EditText and just accepts one digit. This view will be used to receive confirmation code which has 4 digits long.

private void init()
{
    ...

    for (int i = 0; i < 4; i++)
    {
        DigitEditText digitView = getDigitInput();
        digitView.setTag(R.id.etPinCodeView, i); // uses for Espresso testing
        digitView.setKeyEventCallback(this);
        ...
}

I have created res/values/ids.xml and this is its content:

<resources>
    <item name="etPinCodeView" type="id"/>
</resources>

Now, in Espresso I want to catch each DigitEditText and put a digit in it. How I'm able to do that? I see there are two methodes, withTagKey() and withTagValue() but I have no idea how to get them into work.

I thought something like this might work but seems I'm not able to assign 0 into withTagValue().

onView(allOf(withTagKey(R.id.etPinCodeView), withTagValue(matches(0)))).perform(typeText("2"));

Upvotes: 13

Views: 10973

Answers (4)

johnnyb
johnnyb

Reputation: 712

I had to do this myself recently, and there is a second form of withTagKey which also includes a matcher for the value. For your case, I think the right code would be:

onView(withTagKey(R.id.etPinCodeView,is(equalTo(0)))).perform(typeText("2"));

Upvotes: 0

HenriqueMS
HenriqueMS

Reputation: 3974

After setting the tag in your view somewhere in the app, for those confused about the syntax in Kotlin:

withTagValue(`is`(EXPECTED_TAG))

The complete syntax to assert a tag on a specific view:

onView(
   allOf(
       withId(R.id.some_id),
       withTagValue(`is`(EXPECTED_TAG))
   )
)

Simple :)

Upvotes: 8

petey
petey

Reputation: 17150

Since withTagValue needs an instance of org.hamcrest.Matcher as an argument, we can create a simple one using the Matcher.is method to find views with a certain tag in your expresso test:

String tagValue = "lorem impsum";
ViewInteraction viewWithTagVI = onView(withTagValue(is((Object) tagValue)));

Upvotes: 31

Hesam
Hesam

Reputation: 53600

I solved my problem with this trick. Hope it saves some times for you.

First I used Id rather than tag.

for (int i = 0; i < 4; i++)
    {
        DigitEditText digitView = getDigitInput();
        digitView.setId(R.id.etPinCodeView + i); // uses for Espresso testing
        digitView.setKeyEventCallback(this);
        ...

And this is test for it:

onView(withId(R.id.etPinCodeView + 0)).perform(typeText("2"));
onView(withId(R.id.etPinCodeView + 1)).perform(typeText("0"));
onView(withId(R.id.etPinCodeView + 2)).perform(typeText("1"));
onView(withId(R.id.etPinCodeView + 3)).perform(typeText("6"));

Upvotes: 0

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