#robolectric #robolectric4

[Robolectric-4.0] Assert views

        // Backgrounds of views 
        Drawable currentDrawable = textView.getBackground();
        Drawable expectedDrawable = getApplicationContext().getDrawable(R.drawable.background_item_chip_yellow);
        assertThat(shadowOf(currentDrawable).getCreatedFromResId()).isEqualTo(shadowOf(expectedDrawable).getCreatedFromResId());
        
        // Colors of TextView
        int expectedColor = ContextCompat.getColor(getApplicationContext(), R.color.text_blue);
        assertThat(textView.getCurrentTextColor()).isEqualTo(expectedColor);
        
        // Colors of Drawable backgrounds
        Drawable drawable = view.getBackground();
        int currentColor = ((ColorDrawable) drawable).getColor();
        int expectedColor = ContextCompat.getColor(getApplicationContext(), R.color.report_blue);
        assertThat(currentColor).isEqualTo(expectedColor);
        
        // ImageView#setImageResource(int id) - imageView.setImageResource(iconResId);
        Drawable expected = getApplicationContext().getDrawable(R.drawable.ic_plus_blue);
        assertThat(shadowOf(imageView.getDrawable()).getCreatedFromResId()).isEqualTo(shadowOf(expected).getCreatedFromResId());
        
        
        
        // In case if you get exception when initializing view
        // java.lang.IllegalArgumentException: The style on this component requires your app theme to be Theme.AppCompat (or a descendant).
        // Check this https://stackoverflow.com/questions/32346748/robolectric-illegalstateexception-you-need-to-use-a-theme-appcompat-theme-or