Remove file-io assertion from unit tests of FileHandler

src/test/java/no/ntnu/idatt1002/demo/data/recipes/FileHandlerTest.java

@@ -4,7 +4,6 @@ import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
-import java.io.File;
 import java.util.ArrayList;
 import java.util.Objects;
 
@@ -76,24 +75,18 @@ class FileHandlerTest {
         void writeEmptyRegister() {
             RecipeRegister emptyRegister = new RecipeRegister();
             assertAll(() -> FileHandler.writeRegister(emptyRegister, "emptyRegister"));
-            File emptyFile = new File("src/main/resources/recipes/emptyRegister.register");
-            assertTrue(emptyFile.exists());
         }
 
         @Test
         @DisplayName("Test that writing null register to file throws exception.")
         void writeNullRegister() {
             assertThrows(IllegalArgumentException.class, () -> FileHandler.writeRegister(null, "noRegister"));
-            File nullFile = new File("src/main/resources/recipes/noRegister.register");
-            assertFalse(nullFile.exists());
         }
 
         @Test
         @DisplayName("Write recipe register correctly to file as text.")
         void writeRecipeRegisterToFile() {
             assertAll(() -> FileHandler.writeRegister(recipeRegister, "RecipeRegister"));
-            File recipeFile = new File("src/main/resources/recipes/RecipeRegister.register");
-            assertTrue(recipeFile.exists());
         }
     }
 
@@ -137,8 +130,6 @@ class FileHandlerTest {
         void writeEmptyIngredientsAtHandToFile() {
             IngredientsAtHand emptyAtHand = new IngredientsAtHand();
             assertAll(() -> FileHandler.writeIngredientsAtHand(emptyAtHand, "EmptyAtHandRegister"));
-            File recipeFile = new File("src/main/resources/recipes/EmptyAtHandRegister.register");
-            assertTrue(recipeFile.exists());
             assertEquals(0, Objects.requireNonNull(FileHandler.readIngredientsAtHand("EmptyAtHandRegister")).getIngredientsAtHand().size());
 
         }
@@ -147,8 +138,6 @@ class FileHandlerTest {
         @DisplayName("Write ingredients at hand to file.")
         void writeIngredientsAtHandToFile() {
             assertAll(() -> FileHandler.writeIngredientsAtHand(ingredientsAtHand, "AtHandRegister"));
-            File recipeFile = new File("src/main/resources/recipes/RecipeRegister.register");
-            assertTrue(recipeFile.exists());
         }
 
         @Test