/** test of iva method of class CalculateIva */
@Test
public void testCalculateIva() {
CalculateIva calculateIva = Mockito.mock(CalculateIva.class);
Purchase p = BillingCalculator.calculateTotalPurchase(customer, "EL-003,FU-001");
when(CalculateIva.iva(p.getCode())).thenReturn(new BigDecimal(Math.random() * 0.05));
}
/** test for all methods of customer points system of class Customer */
@Test
public void addPoints() {
int points;
String productsFlatFile = "EL-002,FU-007,FU-008";
Purchase result = null;
result = BillingCalculator.calculateTotalPurchase(customer, productsFlatFile);
Customer client = Mockito.mock(Customer.class);
when(client.calculatePoints())
.thenReturn(points = (result.getTotalPrice().divide(new BigDecimal(1000))).intValue());
when(client.addPoints()).thenReturn(customer.getPoints().add(new BigDecimal(points)));
customer.calculatePoints();
customer.addPoints();
}
@Test
public void calculateDiscountPoints() {
String productsFlatFile = "EL-002,FU-007,FU-008";
Purchase result = null;
result = BillingCalculator.calculateTotalPurchase(customer, productsFlatFile);
Customer client = Mockito.mock(Customer.class);
client = result.getCustomer();
when(client.calculateDiscountPoints())
.thenReturn(result.getTotalPrice().multiply(new BigDecimal(Math.random() * 0.02)));
when(client.discountPoints()).thenReturn(true);
if ((client.getPoints().intValue()) > 1000) {
client.discountPoints();
}
}
/** Test of calculateTotalPurchase method, of class BillingCalculator. */
@Test
public void testCalculateTotalPurchase() {
String productsFlatFile = "EL-002,FU-007,FU-008";
Purchase result = null;
BigDecimal discounts = BigDecimal.ZERO;
BigDecimal price = BigDecimal.ZERO;
result = BillingCalculator.calculateTotalPurchase(customer, productsFlatFile);
for (String code : productsFlatFile.split(",")) {
Product p = Product.buildProduct(code);
if (code.startsWith("EL")) {
// true values
price = price.add(p.getPrice());
// just discounts
discounts = discounts.add(p.getPrice().multiply(new BigDecimal(0.05)));
} else if (code.startsWith("FU")) {
price = price.add(p.getPrice());
discounts = discounts.add(p.getPrice().multiply(new BigDecimal(0.1)));
}
}
assertEquals(result.getTotalPrice().add(discounts), price);
}