feat: Dasia's Lesson_17 Business Checking Account and Savings Account

Author: Dasiame

lesson_17/bank/bank_app/src/main/java/com/codedifferently/lesson17/bank/Customer.java

@@ -10,6 +10,7 @@ public class Customer {
   private final UUID id;
   private final String name;
   private final Set<CheckingAccount> accounts = new HashSet<>();
+  private boolean hasBusinessOwner;
 
   /**
    * Creates a new customer.
@@ -20,6 +21,7 @@ public class Customer {
   public Customer(UUID id, String name) {
     this.id = id;
     this.name = name;
+    this.hasBusinessOwner = false;
   }
 
   /**
@@ -71,6 +73,18 @@ public boolean equals(Object obj) {
     return false;
   }
 
+  public void changeToBusinessAccount() {
+    hasBusinessOwner = true;
+  }
+
+  public boolean hasBusinessOwner() {
+    return false;
+  }
+
+  public boolean getHasBusinessOwner() {
+    return true;
+  }
+
   @Override
   public String toString() {
     return "Customer{" + "id=" + id + ", name='" + name + '\'' + '}';

lesson_17/bank/bank_app/src/main/java/com/codedifferently/lesson17/bank/exceptions/BusinessCheckingAccount.java

@@ -0,0 +1,25 @@
+package com.codedifferently.lesson17.bank.exceptions;
+
+import com.codedifferently.lesson17.bank.CheckingAccount;
+import com.codedifferently.lesson17.bank.Customer;
+import java.util.Set;
+
+public class BusinessCheckingAccount extends CheckingAccount {
+  public BusinessCheckingAccount(
+      String accountNumber, Set<Customer> owners, double initialBalance) {
+    super(accountNumber, owners, initialBalance);
+    if (!hasBusinessOwner(owners)) {
+      throw new IllegalArgumentException(
+          "A business account requires at least one owner to be a business.");
+    }
+  }
+
+  private boolean hasBusinessOwner(Set<Customer> owners) {
+    return owners.stream()
+        .anyMatch(
+            owner ->
+                owner.getName().toUpperCase().contains("INC")
+                    || owner.getName().toUpperCase().contains("LLC")
+                    || owner.getName().toUpperCase().contains("CO."));
+  }
+}

lesson_17/bank/bank_app/src/test/java/com/codedifferently/lesson17/bank/BusinessCheckingAccountTest.java

@@ -0,0 +1,57 @@
+package com.codedifferently.lesson17.bank;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+import com.codedifferently.lesson17.bank.exceptions.BusinessCheckingAccount;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.UUID;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+public class BusinessCheckingAccountTest {
+  private BusinessCheckingAccount classUnderTest;
+  private Set<Customer> owners;
+
+  @BeforeEach
+  void setUp() {
+    owners = new HashSet<>();
+  }
+
+  @Test
+  void testHasBusinessOwner_withINCInTheName() {
+    UUID id = UUID.randomUUID();
+    Customer businessOwner = new Customer(id, "Company INC");
+    owners.add(businessOwner);
+
+    BusinessCheckingAccount account = new BusinessCheckingAccount("123456", owners, 200);
+    assertNotNull(account);
+    assertEquals("123456", account.getAccountNumber());
+    assertEquals(200, account.getBalance());
+  }
+
+  @Test
+  void testHasBusinessOwner_withLLCInTheName() {
+    UUID id = UUID.randomUUID();
+    Customer businessOwner = new Customer(id, "Company ILLC");
+    owners.add(businessOwner);
+
+    BusinessCheckingAccount account = new BusinessCheckingAccount("123456", owners, 200);
+    assertNotNull(account);
+    assertEquals("123456", account.getAccountNumber());
+    assertEquals(200, account.getBalance());
+  }
+
+  @Test
+  void testHasBusinessOwner_withCOInTheName() {
+    UUID id = UUID.randomUUID();
+    Customer businessOwner = new Customer(id, "Company CO.");
+    owners.add(businessOwner);
+
+    BusinessCheckingAccount account = new BusinessCheckingAccount("123456", owners, 200);
+    assertNotNull(account);
+    assertEquals("123456", account.getAccountNumber());
+    assertEquals(200, account.getBalance());
+  }
+}