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

wrote a custom matcher

import android.view.View;

import com.google.android.material.textfield.TextInputLayout;

import org.hamcrest.Description;
import org.hamcrest.TypeSafeMatcher;

public class TextInputLayoutErrorMatcher extends TypeSafeMatcher{

private String expectedErrorText;

TextInputLayoutErrorMatcher(String expectedErrorText) {
    this.expectedErrorText = expectedErrorText;
}

@Override
protected boolean matchesSafely(View item) {

    if (!(item instanceof TextInputLayout)) {
        return false;
    }

    CharSequence error = ((TextInputLayout) item).getError();

    if (error == null) {
        return false;
    }

    String hint = error.toString();

    return expectedErrorText.equals(hint);
}

@Override
public void describeTo(Description description) {
    description.appendText("with error text " + expectedErrorText);
}

}