Fix test

Author: mezz

Library/src/main/java/mezz/jei/library/gui/recipes/RecipesGuiDummy.java

@@ -5,6 +5,7 @@
 import mezz.jei.api.recipe.RecipeType;
 import mezz.jei.api.recipe.category.IRecipeCategory;
 import mezz.jei.api.runtime.IRecipesGui;
+import net.minecraft.client.gui.screens.Screen;
 
 import java.util.List;
 import java.util.Optional;
@@ -35,4 +36,9 @@ public <T> void showRecipes(IRecipeCategory<T> recipeCategory, List<T> recipes,
 	public <T> Optional<T> getIngredientUnderMouse(IIngredientType<T> ingredientType) {
 		return Optional.empty();
 	}
+
+	@Override
+	public Optional<Screen> getParentScreen() {
+		return Optional.empty();
+	}
 }