Expressive Espresso

PlugInRadioPage.java

import com.botlink.app.R;
import com.botlink.app.util.widget.ImageViewTest;
import com.botlink.app.util.widget.TextViewTest;

public class PlugInRadioPage {

    public PlugInRadioPage checkImage(@DrawableRes int id) {
        ImageViewTest.withId(R.id.iv_plug_in_radio_image)
                .displayed()
                .src(id);
        
        return this;
    }

    public PlugInRadioPage checkTitle(@StringRes int id) {
        TextViewTest.withId(R.id.tv_plug_in_radio_title)
                .withText("Plug in USB radio")
                .withColor(R.color.botlink_white)
                .displayed();

        return this;
    }

    public PlugInRadioPage checkBody(@StringRes int id) {
        TextViewTest.withId(R.id.tv_plug_in_radio_body)
                .withText("Connect a USB cable from the 915 Mhz USB radio to your device. Make sure the colored end is inserted into the device")
                .withColor(R.color.botlink_white)
                .displayed();

        return this;
    }

}

TextViewTest.java

import android.support.annotation.ColorRes;
import android.support.annotation.IdRes;
import android.support.annotation.StringRes;
import android.support.test.espresso.matcher.ViewMatchers;
import android.view.View;

import com.botlink.app.util.matchers.TextColorMatcher;

import org.hamcrest.Matcher;

public class TextViewTest {

    private final ViewInteractor view;

    public TextViewTest(Matcher<View> view) {
        this.view = new ViewInteractor(view);
    }

    public TextViewTest withText(String value) {
        view.checkAssertion(ViewMatchers.withText(value));
        return this;
    }

    public TextViewTest withText(@StringRes int stringResId) {
        view.checkAssertion(ViewMatchers.withText(stringResId));
        return this;
    }

    public TextViewTest withColor(@ColorRes int colorResId) {
        view.checkAssertion(new TextColorMatcher(colorResId));
        return this;
    }

    public TextViewTest displayed() {
        view.checkAssertion(ViewMatchers.isDisplayed());
        return this;
    }

    public TextViewTest enabled() {
        view.checkAssertion(ViewMatchers.isEnabled());
        return this;
    }

    public static TextViewTest withId(@IdRes int idRes) {
        return new TextViewTest(ViewMatchers.withId(idRes));
    }
    
}

ViewInteractor.java

import android.support.test.espresso.Espresso;
import android.support.test.espresso.ViewAction;
import android.support.test.espresso.ViewInteraction;
import android.support.test.espresso.assertion.ViewAssertions;
import android.view.View;

import org.hamcrest.Matcher;

public class ViewInteractor {

    private final ViewInteraction interaction;

    public ViewInteractor(Matcher<View> view) {
        interaction = Espresso.onView(view);
    }

    public ViewInteraction interaction() {
        return interaction;
    }

    public ViewInteraction checkAssertion(Matcher<View> matcher) {
        return interaction().check(ViewAssertions.matches(matcher));
    }

    public ViewInteraction perform(ViewAction action) {
        return interaction().perform(action);
    }

}