diff --git a/commons/src/test/java/commons/FormalIngredientTest.java b/commons/src/test/java/commons/FormalIngredientTest.java
new file mode 100644
index 0000000..deeeb46
--- /dev/null
+++ b/commons/src/test/java/commons/FormalIngredientTest.java
@@ -0,0 +1,58 @@
+package commons;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class FormalIngredientTest {
+
+    @Test
+    void normaliseGramsToTest(){
+        Ingredient ingredient = new Ingredient("Bread", 1, 2, 3);
+        FormalIngredient toKg = new FormalIngredient(ingredient,1_000,"g");
+        FormalIngredient toTonne = new FormalIngredient(ingredient,1_000_000,"g");
+
+
+        assertEquals(toKg.normalisedUnit(),"1.0kg");
+        assertEquals(toTonne.normalisedUnit(),"1.0t");
+    }
+
+    @Test
+    void normaliseMillilitresToLitresTest(){
+        Ingredient ingredient = new Ingredient("Bread", 1, 2, 3);
+        FormalIngredient toKg = new FormalIngredient(ingredient,1_000,"ml");
+
+        assertEquals(toKg.normalisedUnit(),"1.0l");
+    }
+
+    @Test
+    void normaliseOunceToPoundTest(){
+        Ingredient ingredient = new Ingredient("Bread", 1, 2, 3);
+        FormalIngredient toPound = new FormalIngredient(ingredient,16,"oz");
+
+        assertEquals(toPound.normalisedUnit(),"1.0lb");
+    }
+
+    @Test
+    void normaliseTablespoonToTest(){
+        Ingredient ingredient = new Ingredient("Bread", 1, 2, 3);
+        FormalIngredient toCup = new FormalIngredient(ingredient,16,"tbsp");
+        FormalIngredient toPound = new FormalIngredient(ingredient,32,"tbsp");
+        FormalIngredient toOunce = new FormalIngredient(ingredient,2,"tbsp");
+
+        assertEquals(toCup.normalisedUnit(),"1.0cup(s)");
+        assertEquals(toPound.normalisedUnit(),"1.0lb");
+        assertEquals(toOunce.normalisedUnit(),"1.0oz");
+    }
+
+
+    @Test
+    void noNormaliseTest(){
+        Ingredient ingredient = new Ingredient("Bread", 1, 2, 3);
+        FormalIngredient informal = new FormalIngredient(ingredient,10,"<NONE>");
+        FormalIngredient toSmall = new FormalIngredient(ingredient,10,"g");
+
+        assertEquals(informal.normalisedUnit(),"10.0<NONE>");
+        assertEquals(toSmall.normalisedUnit(),"10.0g");
+    }
+}
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