Split Personality

Definition:

• A test method that attempts to test several behaviors of the tested object.

Also Known As:

• Eager Test

Code Example:

@Test
public void testCalculatePrice() {
    // Test scenario 1: Calculate price for customer with loyalty discount
    Customer customer = new Customer();
    customer.setLoyaltyPoints(100);
    double price = Product.calculatePrice(customer, 20.0, 10.0);
    assertEquals(18.0, price, 0.0);

    // Test scenario 2: Calculate price for customer without loyalty discount
    Customer customer2 = new Customer();
    customer2.setLoyaltyPoints(0);
    double price2 = Product.calculatePrice(customer2, 20.0, 10.0);
    assertEquals(20.0, price2, 0.0);

    // Test scenario 3: Calculate price for product with no discount
    Customer customer3 = new Customer();
    customer3.setLoyaltyPoints(50);
    double price3 = Product.calculatePrice(customer3, 30.0, 0.0);
    assertEquals(30.0, price3, 0.0);
}

References:

Quality attributes

• - Code Example

• - Cause and Effect

• - Frequency

• - Refactoring

• Developer test anti-patterns by lasse koskela