Selecting Native Tabs while Espresso testing

Question

I have a viewpager which utilizes the native actionbar Tabs as the indicator. I would like to navigate to different tabs, but Tab component is not a view therefore, onView, or withText does not work properly with perform clicks.

Is there a specific way I can do to navigate through the Tab navigation?

Answer 1

You could use swiping to navigate between your tabs:

onView(withId(R.id.viewpager)).perform(swipeLeft());
onView(withId(R.id.viewpager)).perform(swipeRight());

Answer 2

Assuming there is text on the tab, you can do:

onView(withText("Tab Text")).perform(click())

onView, withText and click are static imports.

Answer 3

I created the following method to select any tab with the text on view.

public MainScreen clickOnTab(String tabText) {
    onView(allOf(withClassName(endsWith("TabView")),
            withChild(withText(tabText)),
            withParent(withParent(withId(R.id.main_activity_tab_layout)))
    )).perform(scrollTo()).perform(click());
    return this;
}

and in order to call this method simply call the method like below:

MainScreen.getInstance().clickOnTab("Tab Name");

Cheers