package cse1030.labtest1;

import static org.junit.Assert.*;

import org.junit.BeforeClass;
import org.junit.Test;

public class MoneyTest {
  
  @Test(expected=IllegalArgumentException.class)
  public void testCtorThrows1() {
    new Money(-100, 0);
  }
  
  @Test(expected=IllegalArgumentException.class)
  public void testCtorThrows2() {
    new Money(0, -100);
  }
  
  @Test(expected=IllegalArgumentException.class)
  public void testCtorThrows3() {
    new Money(-100, -100);
  }

  @Test
  public void testSetDollars() {
    int dollarsCirc = Money.getDollarsInCirculation();
    Money m = new Money();
    assertTrue("setDollars(1) returned false", m.setDollars(1));
    
    assertTrue("setDollars did not change the dollars in circulation correctly",
        Money.getDollarsInCirculation() - dollarsCirc == 1);
    
    assertTrue("setDollars(0) returned false", m.setDollars(0));
    
    assertTrue("setDollars did not change the dollars in circulation correctly",
        Money.getDollarsInCirculation() - dollarsCirc == 0);
    
    assertFalse("setDollars(-1) returned true", m.setDollars(-1));
  }

  @Test
  public void testSetCents() {
    int centsCirc = Money.getCentsInCirculation();
    Money m = new Money();
    assertTrue("setCents(1) returned false", m.setCents(1));
    
    assertTrue("setCents did not change the cents in circulation correctly",
        Money.getCentsInCirculation() - centsCirc == 1);
    
    assertTrue("setCents(0) returned false", m.setCents(0));
    
    assertTrue("setCents did not change the cents in circulation correctly",
        Money.getDollarsInCirculation() - centsCirc == 0);
    
    assertFalse("setCents(-1) returned true", m.setCents(-1));
  }

  @Test
  public void testGetDollars() {
    Money m = new Money();
    assertTrue("getDollars returned the wrong value", m.getDollars() == 0);
    
    m = new Money(100, 0);
    assertTrue("getDollars returned the wrong value", m.getDollars() == 100);
  }

  @Test
  public void testGetCents() {
    Money m = new Money();
    assertTrue("getCents returned the wrong value", m.getCents() == 0);
    
    m = new Money(0, 100);
    assertTrue("getCents returned the wrong value", m.getCents() == 100);
  }

  @Test
  public void testGetDollarsInCirculation() {
    int dollarsCirc = Money.getDollarsInCirculation();
    Money m = new Money(100, 0);
    assertTrue("new Money(100, 0) did not increase the dollars in circulation by 100",
        Money.getDollarsInCirculation() - dollarsCirc == 100);
  }

  @Test
  public void testGetCentsInCirculation() {
    int centsCirc = Money.getCentsInCirculation();
    Money m = new Money(0, 100);
    assertTrue("new Money(0, 100) did not increase the cents in circulation by 100",
        Money.getCentsInCirculation() - centsCirc == 100);
  }

}