Android Espresso - assert text on screen against string in resources

Question

I have the following text in strings.xml resources file:

<string name="txt_to_assert">My Text</string>

Normally in a application code, to use this text and display it on screen, I'm doing the following:

getString(R.string.main_ent_mil_new_mileage);

At the moment, I'm trying to use this string resource in a UI test written with Espresso. I'm thinking of doing something like that:

String myTextFromResources = getString(R.string.main_ent_mil_new_mileage);
onView(allOf(withId(R.id.my_text_on_screen), withText(myTextFromResources))
    .check(matches(isDisplayed()));

However, getString(...) method cannot be used here.
Is there a way to get a text from strings.xml resource file and use it in a test written with Espresso?

I get an error: **Resources$NotFoundException: String resource ID** — IgorGanapolsky, Aug 23 '17 at 16:14

adalpari · Answer 1 · 2017-06-26T10:49:05.690

70

Use this function:

private String getResourceString(int id) {
    Context targetContext = InstrumentationRegistry.getTargetContext();
    return targetContext.getResources().getString(id);
}

You just have to call it with the id of the string and perform your action:

String myTextFromResources = getResourceString(R.string.main_ent_mil_new_mileage);
onView(allOf(withId(R.id.my_text_on_screen), withText(myTextFromResources))
    .check(matches(isDisplayed()));

*EDIT for new Espresso version:

With new version of Espresso, you should be able to call directly the string resource with a ViewMatcher. So first, I recommend to try directly this import

import static android.support.test.espresso.matcher.ViewMatchers.withText;

And then in the code:

withText(R.string.my_string_resource)

edited Jun 26 '17 at 10:49

answered Sep 12 '16 at 15:43

adalpari

3,052
20
39

Nice to read that! you could accept my answer or vote me up mate ;) – adalpari Sep 13 '16 at 15:09
1

Voted up, but I'm getting messages that votes from users with less than 15 reputation are taken into account, but not shown publicly. – klimos Sep 14 '16 at 13:08
Your first method is still valid if we want to use equalToIgnoringCase from hamcrest. Example: onView(allOf(withText(equalToIgnoringCase(getResourceString(R.string.promos_activity_tab_store_))), isCompletelyDisplayed())).perform(click()); – Kunami Mar 08 '18 at 15:38

score 9 · Answer 2 · answered Oct 30 '20 at 05:17

androidx.test.platform.app.InstrumentationRegistry is deprecated use androidx.test.core.app.ApplicationProvider

val targetContext: Context = ApplicationProvider.getApplicationContext()
val test: String =  targetContext.getResources().getString(R.string. my_text_on_screen)

score 8 · Answer 3 · answered Jul 26 '19 at 01:17

8

Kotlin:

var resources: Resources = InstrumentationRegistry.getInstrumentation().targetContext.resources

answered Jul 26 '19 at 01:17

PSK

583
7
15

score 1 · Answer 4 · answered Jul 25 '19 at 11:32

1

If in case you have to append a text before the String resource, you will have to do it like this

val text=getApplicationContext<Context().getResources().getString(R.string.title_tenth_char)

now that you have access to text append the string to that

answered Jul 25 '19 at 11:32

Aniruddha K.M

7,361
3
43
52

Android Espresso - assert text on screen against string in resources

4 Answers4