diff --git a/domain-model.md b/domain-model.md
new file mode 100644
index 00000000..e5a76eb6
--- /dev/null
+++ b/domain-model.md
@@ -0,0 +1,39 @@
+# Domain model Bobs Bagels
+
+### class Basket
+```
+1.
+As a member of the public,
+So I can order a bagel before work,
+I'd like to add a specific type of bagel to my basket.
+```
+```
+2.
+As a member of the public,
+So I can change my order,
+I'd like to remove a bagel from my basket.
+```
+```
+3.
+As a member of the public,
+So that I can not overfill my small bagel basket
+I'd like to know when my basket is full when I try adding an item beyond my basket capacity.
+```
+```
+4.
+As a Bob's Bagels manager,
+So that I can expand my business,
+I’d like to change the capacity of baskets.
+```
+```
+5.
+As a member of the public
+So that I can maintain my sanity
+I'd like to know if I try to remove an item that doesn't exist in my basket.
+```
+
+| Variables                                                                | Methods                                                                                             | Scenario                                                                                                               | Output                                                                                                                                    |
+|--------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------|
+| `HashMap<String, Double\> Basket` <br> `HashMap<String, Double\> Bagel`  | `add(String bagelType, double price)`<br> `remove(String bagelType)` <br>`exists(String bagelType)` | if there is capacity, adds bagel to basket, else basket is full<br>  remove bagel only, if bagel exists in basket <br> | "Added <bagel\> to basket."<br> "Basket is full."<br> "<bagel\> is not in basket, can't remove. "<br> Removed <bagel\> <br> from basket." |
+| `HashMap<Integer, Boolean\> basketCapacity`                              | `changeCap(int cap)` <br> `isManager(int passWord)`                                                 | if managercode is correct, change capacity. <br>                                                                       | "Password correct, capacity is updated!" <br> "Password inccorect, capacity is not updated!"                                              |
+
diff --git a/src/main/java/com/booleanuk/core/Basket.java b/src/main/java/com/booleanuk/core/Basket.java
index df7a20aa..3c437492 100644
--- a/src/main/java/com/booleanuk/core/Basket.java
+++ b/src/main/java/com/booleanuk/core/Basket.java
@@ -1,5 +1,66 @@
 package com.booleanuk.core;
 
+import java.util.HashMap;
+import java.util.Map;
+import java.util.function.BooleanSupplier;
+
 public class Basket {
+    private Map<String, Double> items;
+    private int capacity;
+    private int managerCode = 1234;
+
+    public Basket() {
+        this.items = new HashMap<>();
+        this.capacity = 6;
+    }
+
+    public void add(String bagel, double price) {
+        if (!isFull());
+        {
+            items.put(bagel, price);
+            System.out.println("Added " + bagel +" to basket");
+        }
+        System.out.println("Basket is full.");
+    }
+    public boolean isFull() {
+        return items.size() >= capacity;
+    }
+
+    public boolean isNotEmpty(String bagel){
+        if (items.containsKey(bagel)) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+    public void remove(String bagel) {
+        if (items.containsKey(bagel)) {
+            items.remove(bagel);
+            System.out.println("Removed " + bagel + " from basket.");
+        } System.out.println(bagel + " not in basket.");
+    }
 
+    public Map<String, Double> getItems() {
+        return items;
+    }
+
+    public boolean isManager(int password) {
+        return password == managerCode;
+    }
+
+    public int changeCap(int newCapacity, int password) {
+        if (isManager(password)) {
+            this.capacity = newCapacity;
+            System.out.println("Password correct, capacity is updated!");
+            return newCapacity;
+        } else {
+            System.out.println("Password incorrect, capacity is not updated!");
+            return this.capacity; // Return the current capacity if the password is incorrect
+        }
+    }
+
+    public int getCapacity() {
+        return capacity;
+    }
 }
+
diff --git a/src/test/java/com/booleanuk/core/BasketTest.java b/src/test/java/com/booleanuk/core/BasketTest.java
index e35771b3..bc0d247c 100644
--- a/src/test/java/com/booleanuk/core/BasketTest.java
+++ b/src/test/java/com/booleanuk/core/BasketTest.java
@@ -4,5 +4,84 @@
 import org.junit.jupiter.api.Test;
 
 class BasketTest {
+    @Test
+    public void addBagelToBasket() {
+        Basket basket = new Basket();
+        String sesame = "Sesame Bagel";
+        double price = 4.50;
+        basket.add(sesame, price);
 
+        Assertions.assertFalse(basket.isFull());
+        Assertions.assertEquals(basket.getItems().get(sesame), price);
+    }
+    @Test
+    public void checkIfBasketIsFull(){
+        Basket basket = new Basket();
+        String sesame = "Sesame Bagel";
+        double price1 = 4.50;
+        String redvelvet = "Everything Bagel";
+        double price2 = 5.50;
+        String jalapenoCheese = "jalapenoCheese Bagel";
+        double price3 = 5.50;
+        String cinnamon = "Cinnamon Bagel";
+        double price4 = 4.50;
+        String flaxseed = "Flaxseed Bagel";
+        double price5 = 3.50;
+        String oats = "Oat Bagel";
+        double price6 = 5.50;
+        String whole = "WholeGrain Bagel";
+        double price7 = 6.50;
+
+        basket.add(sesame, price1);
+        basket.add(redvelvet, price2);
+        basket.add(jalapenoCheese, price3);
+        basket.add(cinnamon, price4);
+        basket.add(flaxseed, price5);
+        basket.add(oats, price6);
+        basket.add(whole, price7);
+
+        Assertions.assertTrue(basket.isFull());
+    }
+    @Test
+    public void removeBagelFromBasket(){
+        Basket basket = new Basket();
+        String sesame = "Sesame Bagel";
+        double price = 4.50;
+
+        basket.add(sesame, price);
+        Assertions.assertTrue(basket.isNotEmpty(sesame));
+        basket.remove(sesame);
+        Assertions.assertFalse(basket.isNotEmpty(sesame));
+    }
+    @Test
+    public void existsBagelInCart(){
+        Basket basket = new Basket();
+        String sesame = "Sesame Bagel";
+        double price1 = 4.50;
+        String jalapenoCheese = "Jalapeno Cheese Bagel";
+        double price2 = 5.50;
+
+        basket.add(sesame, price1);
+        Assertions.assertTrue(basket.isNotEmpty(sesame));
+        Assertions.assertFalse(basket.isNotEmpty(jalapenoCheese));
+
+
+    }
+    @Test
+    public void isAuthorizedToChangeCap(){
+        Basket basket = new Basket();
+        int managerCode = 1234;
+
+        Assertions.assertTrue(basket.isManager(managerCode));
+    }
+
+    @Test
+    public void capacityIsChanged(){
+        Basket basket = new Basket();
+        int newCapacity = 10;
+        int managerCode = 1234;
+        basket.changeCap(newCapacity, managerCode);
+
+        Assertions.assertEquals(newCapacity, basket.getCapacity());
+    }
 }