Add oving 7

src/test/java/oving7/savingsaccount/ForeldreSparTest.java

@@ -0,0 +1,72 @@
+package oving7.savingsaccount;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+public class ForeldreSparTest {
+
+	private static final double epsilon = 0.001;
+
+	private ForeldreSpar foreldreSpar;
+
+	@BeforeEach
+	public void setUp() {
+		foreldreSpar = new ForeldreSpar(0.04, 3);
+	}
+
+	@Test
+	@DisplayName("Check that withdraw works as expected")
+	public void testWithdraw() {
+		foreldreSpar.deposit(10_000.0);
+		foreldreSpar.withdraw(1000.0);
+		assertEquals(9000.0, foreldreSpar.getBalance(), epsilon,
+				"The account balance is incorrect");
+
+		assertThrows(IllegalArgumentException.class, () -> {
+			foreldreSpar.withdraw(-10_000.0);
+		}, "Negative withdrawal should have triggered an IllegalArgumentException!");
+
+		assertEquals(9000, foreldreSpar.getBalance(), epsilon, "The account balance is incorrect");
+
+		assertThrows(IllegalArgumentException.class, () -> {
+			foreldreSpar.withdraw(10_000);
+		}, "Should not be able to withdraw more money than is in the account");
+
+		assertEquals(9000.0, foreldreSpar.getBalance(), epsilon,
+				"The account balance is incorrect");
+
+		foreldreSpar.withdraw(1000.0);
+		foreldreSpar.withdraw(1000.0);
+
+		assertThrows(IllegalStateException.class, () -> {
+			foreldreSpar.withdraw(1000.0);
+		}, "Should not be able to make more withdrawals than the set limit");
+
+		foreldreSpar.endYearUpdate();
+		foreldreSpar.withdraw(1000.0);
+		assertEquals(7000.0 * (1 + 0.04) - 1000.0, foreldreSpar.getBalance(), epsilon,
+				"The account balance is incorrect");
+	}
+
+	@Test
+	@DisplayName("Check that remaining withdrawals are always correct")
+	public void testRemainingWithdrawals() {
+		foreldreSpar.deposit(10_000.0);
+		foreldreSpar.withdraw(1000.0);
+		assertEquals(2, foreldreSpar.getRemainingWithdrawals());
+
+		foreldreSpar.withdraw(1000.0);
+		foreldreSpar.withdraw(1000.0);
+		assertEquals(0, foreldreSpar.getRemainingWithdrawals());
+
+		assertThrows(IllegalStateException.class, () -> {
+			foreldreSpar.withdraw(1000.0);
+		}, "Should not be able to make more withdrawals than the set limit");
+
+		foreldreSpar.endYearUpdate();
+		assertEquals(3, foreldreSpar.getRemainingWithdrawals());
+	}
+}