public void Test_calculateBill_WithDuplicates()
{
string[] testBill = new string[] { "Cola", "Coffee", "Cola" };
double expected = 2;
double actual = BillCalculator.calculateBill(testBill);
Assert.AreEqual(expected, actual);
}
public void Test_calculateBill_WithEmpty()
{
string[] testBill = new string[] {};
double expected = 0;
double actual = BillCalculator.calculateBill(testBill);
Assert.AreEqual(expected, actual);
}
public void Test_calculateBill_Basic()
{
string[] testBill = new string[] { "Cola", "Coffee", "Cheese Sandwich" };
double expected = 3.5;
double actual = BillCalculator.calculateBill(testBill);
Assert.AreEqual(expected, actual);
}