espresso_test.kt

class CreatePostActivityTest {
  @Test
  fun void createPost_WithText_Success() {
    // Find the edit text and perform typing text action
    // close the keyboard after text has been entered
    onView(withId(R.id.post_text))
    .perform(ViewActions.typeText("This is a post"),ViewActions.closeSoftKeyboard))
    // Find the submit post button and perform a click
    onView(withId(R.id.post_button))
    .perform(ViewActions.click())
    // Find the verification text and verify the result text
    onView(withId(R.id.post_submit_result_text))
    .check(ViewAssertions.matches(ViewMatchers.withText(R.string.post_submitted)))
  }
}