Android Espresso. How to check ErrorText in TextInputLayout

Question

Basically I am trying to test that after login incorrectly I have an error showing in the email field.

The view is:

Answer 1

You could write a Custom Matcher:

public final class CustomItemMatchers {

private static class TextInputLayoutErrorMatcher extends BoundedMatcher {

  private final Matcher itemTextMatcher;

  public TextInputLayoutErrorMatcher(final Matcher itemTextMatcher){
     super(TextInputLayout.class);
     this.itemTextMatcher = itemTextMatcher;
  }

  @Override
  public void describeTo(Description description) {
     description.appendText("with error  content: ");
     itemTextMatcher.describeTo(description);
  }

  @Override
  protected boolean matchesSafely(TextInputLayout til) {
     if (til == null) {
        return false;
     }
     return itemTextMatcher.matches((til.getError());
  }
}

public static Matcher