update

pom.xml

@@ -7,6 +7,18 @@
     <groupId>rocks.zipcode</groupId>
     <artifactId>quiz3a</artifactId>
     <version>1.0</version>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>8</source>
+                    <target>8</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
     <dependencies>
         <dependency>
             <groupId>junit</groupId>

src/main/java/rocks/zipcode/quiz3a/arrays/ArrayUtils.java

@@ -0,0 +1,7 @@
+package rocks.zipcode.quiz3a.arrays;
+
+/**
+ * @author leon on 01/01/2019.
+ */
+public class ArrayUtils {
+}

src/main/java/rocks/zipcode/quiz3a/collections/Bank.java

@@ -1,6 +1,6 @@
 package rocks.zipcode.quiz3a.collections;
 
-import rocks.zipcode.quiz3a.objectorientation.BankAccount;
+import rocks.zipcode.quiz3a.objectorientation.account.BankAccount;
 
 import java.util.List;
 

src/main/java/rocks/zipcode/quiz3a/collections/Food.java

@@ -18,7 +18,7 @@ public class Food {
         return null;
     }
 
-    public Map<Spice, Integer> getSpiceCount() {
+    public <SpiceType extends Class<? extends Spice>> Map<SpiceType, Integer> getSpiceCount(SpiceType spiceType) {
         return null;
     }
 

src/main/java/rocks/zipcode/quiz3a/fundamentals/StringUtils.java

@@ -5,9 +5,6 @@ package rocks.zipcode.quiz3a.fundamentals;
  */
 public class StringUtils {
     public static Character getMiddleCharacter(String string) {
-        // 0. figure out how long
-        // 1. divide length by 2
-        // 2.
         return null;
     }
 
@@ -18,4 +15,8 @@ public class StringUtils {
     public static String lowerCaseMiddleCharacter(String str) {
         return null;
     }
+
+    public static Boolean isIsogram(String str) {
+        return null;
+    }
 }

src/main/java/rocks/zipcode/quiz3a/objectorientation/BankAccount.java

@@ -1,35 +0,0 @@
-package rocks.zipcode.quiz3a.objectorientation;
-
-/**
- * @author leon on 27/12/2018.
- */
-public class BankAccount {
-    public void increaseBalance(Double amountToIncreaseBy) {
-
-    }
-
-    public void decreaseBalance(Double amountToIncreaseBy) {
-
-    }
-
-    public Long getId() {
-        return null;
-    }
-
-    public void setId(Long id) {
-    }
-
-    public Double getBalance() {
-        return null;
-    }
-
-    public void setBalance(Double balance) {
-    }
-
-    public String getAccountHolderName() {
-        return null;
-    }
-
-    public void setAccountHolderName(String accountHolderName) {
-    }
-}

src/main/java/rocks/zipcode/quiz3a/objectorientation/account/Account.java

@@ -0,0 +1,13 @@
+package rocks.zipcode.quiz3a.objectorientation.account;
+
+/**
+ * @author leon on 30/12/2018.
+ */
+public class Account extends BankAccount {
+    public Long getId() {
+        return null;
+    }
+
+    public void setId(Long id) {
+    }
+}

src/main/java/rocks/zipcode/quiz3a/objectorientation/account/BankAccount.java

@@ -0,0 +1,18 @@
+package rocks.zipcode.quiz3a.objectorientation.account;
+
+/**
+ * @author leon on 27/12/2018.
+ */
+public class BankAccount {
+    public void increaseBalance(Double amountToIncreaseBy) {
+
+    }
+
+    public void decreaseBalance(Double amountToIncreaseBy) {
+
+    }
+
+    public Double getBalance() {
+        return null;
+    }
+}

src/main/java/rocks/zipcode/quiz3a/objectorientation/account/Employee.java

@@ -0,0 +1,24 @@
+package rocks.zipcode.quiz3a.objectorientation.account;
+
+/**
+ * @author leon on 30/12/2018.
+ */
+public class Employee {
+    public Employee() {
+    }
+
+    public Employee(BankAccount bankAccount) {
+    }
+
+    public BankAccount getBankAccount() {
+        return null;
+    }
+
+    public void setBankAccount(BankAccount bankAccount) {
+
+    }
+
+    public String getName() {
+        return null;
+    }
+}

src/main/java/rocks/zipcode/quiz3a/objectorientation/account/Transactable.java

@@ -0,0 +1,10 @@
+package rocks.zipcode.quiz3a.objectorientation.account;
+
+/**
+ * @author leon on 30/12/2018.
+ */
+public interface Transactable {
+    void deposit(Double amountToIncreaseBy);
+    void withdrawal(Double amountToDecreaseBy);
+    Double getBalance();
+}

src/main/java/rocks/zipcode/quiz3a/objectorientation/account/Worker.java

@@ -0,0 +1,11 @@
+package rocks.zipcode.quiz3a.objectorientation.account;
+
+/**
+ * @author leon on 30/12/2018.
+ */
+public interface Worker {
+    void increaseHoursWorked(Double numberOfHours);
+    Double getHoursWorked();
+    Double getHourlyWage();
+    Double getMoneyEarned();
+}

src/test/java/rocks/zipcode/quiz3a/collections/food/GetSpiceCountTest.java

@@ -1,9 +1,14 @@
 package rocks.zipcode.quiz3a.collections.food;
 
+import org.junit.Assert;
 import org.junit.Test;
 import rocks.zipcode.quiz3a.collections.Food;
+import rocks.zipcode.quiz3a.objectorientation.Ginger;
+import rocks.zipcode.quiz3a.objectorientation.Pepper;
 import rocks.zipcode.quiz3a.objectorientation.Spice;
 
+import java.util.Map;
+
 /**
  * @author leon on 27/12/2018.
  */
@@ -12,8 +17,16 @@ public class GetSpiceCountTest {
     public void test1() {
         // given
         Food food = new Food();
-        food.applySpice(new Spice());
+        food.applySpice((Spice)(Object)new Pepper());
+        food.applySpice((Spice)(Object)new Pepper());
+        food.applySpice((Spice)(Object)new Ginger());
+        food.applySpice((Spice)(Object)new Ginger());
+
         // when
+        Map<? extends Class<? extends Spice>, Integer> spiceCount = food.getSpiceCount((Class<? extends Spice>)(Object)Pepper.class);
+        spiceCount.get(null);
+
         // then
+//        Assert.assertEquals();
     }
 }

src/test/java/rocks/zipcode/quiz3a/objectorientation/account/AccountPolymorphismTest.java

@@ -0,0 +1,20 @@
+package rocks.zipcode.quiz3a.objectorientation.account;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * @author leon on 30/12/2018.
+ */
+public class AccountPolymorphismTest {
+    private Account account = new Account();
+    @Test
+    public void test1() {
+        Assert.assertFalse(account instanceof Transactable);
+    }
+
+    @Test
+    public void test2() {
+        Assert.assertFalse(account instanceof BankAccount);
+    }
+}

src/test/java/rocks/zipcode/quiz3a/objectorientation/bankaccount/BankAccountPolymorphismTest.java

@@ -0,0 +1,23 @@
+package rocks.zipcode.quiz3a.objectorientation.bankaccount;
+
+import org.junit.Assert;
+import org.junit.Test;
+import rocks.zipcode.quiz3a.objectorientation.account.Account;
+import rocks.zipcode.quiz3a.objectorientation.account.BankAccount;
+import rocks.zipcode.quiz3a.objectorientation.account.Transactable;
+
+/**
+ * @author leon on 30/12/2018.
+ */
+public class BankAccountPolymorphismTest {
+    BankAccount bankAccount = new BankAccount();
+    @Test
+    public void test1() {
+        Assert.assertTrue(bankAccount instanceof Transactable);
+    }
+
+    @Test
+    public void test2() {
+        Assert.assertTrue(bankAccount instanceof Account);
+    }
+}

src/test/java/rocks/zipcode/quiz3a/objectorientation/bankaccount/DecreaseBalanceTest.java

@@ -0,0 +1,7 @@
+package rocks.zipcode.quiz3a.objectorientation.bankaccount;
+
+/**
+ * @author leon on 30/12/2018.
+ */
+public class DecreaseBalanceTest {
+}

src/test/java/rocks/zipcode/quiz3a/objectorientation/bankaccount/IncreaseBalanceTest.java

@@ -0,0 +1,7 @@
+package rocks.zipcode.quiz3a.objectorientation.bankaccount;
+
+/**
+ * @author leon on 30/12/2018.
+ */
+public class IncreaseBalanceTest {
+}

src/test/java/rocks/zipcode/quiz3a/objectorientation/employee/EmployeeConstructorTest.java

@@ -0,0 +1,59 @@
+package rocks.zipcode.quiz3a.objectorientation.employee;
+
+import org.junit.Assert;
+import org.junit.Test;
+import rocks.zipcode.quiz3a.objectorientation.account.BankAccount;
+import rocks.zipcode.quiz3a.objectorientation.account.Employee;
+import rocks.zipcode.quiz3a.objectorientation.account.Transactable;
+import rocks.zipcode.quiz3a.objectorientation.account.Worker;
+
+/**
+ * @author leon on 30/12/2018.
+ */
+public class EmployeeConstructorTest {
+    @Test
+    public void testNullaryConstructor() {
+        // given
+        Employee employee = new Employee();
+        Worker worker = (Worker) employee;
+        Transactable transactable = (Transactable) employee;
+
+        Double expectedHourlyWage = 35.0;
+        Double expectedHoursWorked = 0.0;
+        Double expectedBalance = 0.0;
+        Double expectedBankAccountBalance = 0.0;
+        Double expectedMoneyEarned = expectedHourlyWage * expectedHoursWorked;
+
+        Assert.assertNotNull(employee.getBankAccount());
+        Assert.assertEquals(expectedHourlyWage, worker.getHourlyWage());
+        Assert.assertEquals(expectedHoursWorked, worker.getHoursWorked());
+        Assert.assertEquals(expectedBalance, transactable.getBalance());
+        Assert.assertEquals(expectedBankAccountBalance, employee.getBankAccount().getBalance());
+    }
+
+    @Test
+    public void testNonNullaryConstructor() {
+        // given
+        Double expectedHourlyWage = 35.0;
+        Double expectedHoursWorked = 0.0;
+        Double expectedBalance = 15.0;
+        Double expectedBankAccountBalance = expectedBalance;
+        Double expectedMoneyEarned = expectedHourlyWage * expectedHoursWorked;
+        BankAccount bankAccount = new BankAccount();
+        bankAccount.increaseBalance(expectedBankAccountBalance);
+
+        // when
+        Employee employee = new Employee(bankAccount);
+        Worker worker = (Worker) employee;
+        Transactable transactable = (Transactable) employee;
+
+
+        Assert.assertNotNull(employee.getBankAccount());
+        Assert.assertEquals(expectedHourlyWage, worker.getHourlyWage());
+        Assert.assertEquals(expectedHoursWorked, worker.getHoursWorked());
+        Assert.assertEquals(expectedBalance, transactable.getBalance());
+        Assert.assertEquals(expectedMoneyEarned, expectedMoneyEarned);
+        Assert.assertEquals(expectedBankAccountBalance, employee.getBankAccount().getBalance());
+    }
+
+}

src/test/java/rocks/zipcode/quiz3a/objectorientation/employee/EmployeeDepositTest.java

@@ -0,0 +1,59 @@
+package rocks.zipcode.quiz3a.objectorientation.employee;
+
+import org.junit.Assert;
+import org.junit.Test;
+import rocks.zipcode.quiz3a.objectorientation.account.BankAccount;
+import rocks.zipcode.quiz3a.objectorientation.account.Employee;
+import rocks.zipcode.quiz3a.objectorientation.account.Transactable;
+
+/**
+ * @author leon on 30/12/2018.
+ */
+public class EmployeeDepositTest {
+    @Test
+    public void test1() {
+        test(0.0, 10.0);
+    }
+
+    @Test
+    public void test2() {
+        test(0.0, 20.0);
+    }
+
+    @Test
+    public void test3() {
+        test(10.0, 100.0);
+    }
+
+    @Test
+    public void test4() {
+        test(20.0, 300.0);
+    }
+
+    @Test
+    public void test5() {
+        test(0.0, 400.0);
+    }
+
+
+    private void test(Double preDepositBalance, Double amountToDeposit) {
+        // given
+        Employee employee = new Employee();
+        BankAccount bankAccount = employee.getBankAccount();
+        Transactable employeeAsTransactable = (Transactable) employee;
+
+        employeeAsTransactable.deposit(preDepositBalance);
+        Double expectedEmployeeBalance = preDepositBalance + amountToDeposit;
+
+
+        // when
+        employeeAsTransactable.deposit(amountToDeposit);
+        Double actualEmployeeBalance = employeeAsTransactable.getBalance();
+        Double actualBankAccountBalance = bankAccount.getBalance();
+
+
+        // then
+        Assert.assertEquals(expectedEmployeeBalance, actualEmployeeBalance);
+        Assert.assertEquals(expectedEmployeeBalance, actualBankAccountBalance);
+    }
+}

src/test/java/rocks/zipcode/quiz3a/objectorientation/employee/EmployeePolymorphismTest.java

@@ -0,0 +1,31 @@
+package rocks.zipcode.quiz3a.objectorientation.employee;
+
+import org.junit.Assert;
+import org.junit.Test;
+import rocks.zipcode.quiz3a.objectorientation.account.Account;
+import rocks.zipcode.quiz3a.objectorientation.account.Employee;
+import rocks.zipcode.quiz3a.objectorientation.account.Transactable;
+import rocks.zipcode.quiz3a.objectorientation.account.Worker;
+
+/**
+ * @author leon on 30/12/2018.
+ */
+public class EmployeePolymorphismTest {
+    private Employee employee = new Employee();
+
+    @Test
+    public void test1() {
+        Assert.assertTrue(employee instanceof Transactable);
+    }
+
+    @Test
+    public void test2() {
+        Assert.assertTrue(employee instanceof Worker);
+    }
+
+
+    @Test
+    public void test3() {
+        Assert.assertFalse((Account) (Object) employee instanceof Account);
+    }
+}

src/test/java/rocks/zipcode/quiz3a/objectorientation/employee/IncreaseHoursWorkedTest.java

@@ -0,0 +1,57 @@
+package rocks.zipcode.quiz3a.objectorientation.employee;
+
+import org.junit.Assert;
+import org.junit.Test;
+import rocks.zipcode.quiz3a.objectorientation.account.Employee;
+import rocks.zipcode.quiz3a.objectorientation.account.Worker;
+
+/**
+ * @author leon on 30/12/2018.
+ */
+public class IncreaseHoursWorkedTest {
+
+    @Test
+    public void test1() {
+        // given
+        test(0.0, 1.0);
+    }
+
+    @Test
+    public void test2() {
+        // given
+        test(0.0, 5.0);
+    }
+
+
+    @Test
+    public void test4() {
+        // given
+        test(1.0, 10.0);
+    }
+
+
+    @Test
+    public void test5() {
+        // given
+        test(2.0, 2.0);
+    }
+
+
+    private void test(Double numberOfHoursWorkedSoFar, Double numberOfHoursToWork) {
+        // given
+        Employee employee = new Employee();
+        Worker employeeAsWorker = (Worker) employee;
+
+        employeeAsWorker.increaseHoursWorked(numberOfHoursWorkedSoFar);
+        Double expected = numberOfHoursWorkedSoFar + numberOfHoursToWork;
+
+
+        // when
+        employeeAsWorker.increaseHoursWorked(numberOfHoursToWork);
+        Double actual = employeeAsWorker.getHoursWorked();
+
+
+        // then
+        Assert.assertEquals(expected, actual);
+    }
+}

src/test/java/rocks/zipcode/quiz3a/objectorientation/employee/SetBankAccountTest.java

@@ -0,0 +1,54 @@
+package rocks.zipcode.quiz3a.objectorientation.employee;
+
+import org.junit.Assert;
+import org.junit.Test;
+import rocks.zipcode.quiz3a.objectorientation.account.BankAccount;
+import rocks.zipcode.quiz3a.objectorientation.account.Employee;
+import rocks.zipcode.quiz3a.objectorientation.account.Transactable;
+
+/**
+ * @author leon on 30/12/2018.
+ */
+public class SetBankAccountTest {
+    @Test
+    public void test1() {
+        // given
+        Employee employee = new Employee();
+        BankAccount expected = new BankAccount();
+
+        // when
+        employee.setBankAccount(expected);
+        BankAccount actual = employee.getBankAccount();
+
+        // then
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void test2() {
+        test(10.0);
+    }
+
+
+    @Test
+    public void test3() {
+        test(15.0);
+    }
+
+
+    public void test(Double expectedBalance) {
+        // given
+        Employee employee = new Employee();
+        BankAccount expected = new BankAccount();
+        ((Transactable)expected).setBalance(expectedBalance);
+
+        // when
+        employee.setBankAccount(expected);
+        BankAccount actual = employee.getBankAccount();
+        Double actualBalance = ((Transactable)employee).getBalance();
+
+        // then
+        Assert.assertEquals(expected, actual);
+        Assert.assertEquals(expectedBalance, actualBalance);
+    }
+}