public void MinimizeAmountsOfChange_WithNinetyFourCents_SetsChangeToThreeQuartersOneDimeOneNickelFourPennies()
{
CashTransaction ct = new CashTransaction(0, 94);
SimpleCashRegister scr = new SimpleCashRegister();
Dictionary <CashDenominations, int> expected = new Dictionary <CashDenominations, int>()
{
{ CashDenominations.Dollars, 0 },
{ CashDenominations.Quarters, 3 },
{ CashDenominations.Dimes, 1 },
{ CashDenominations.Nickels, 1 },
{ CashDenominations.Pennies, 4 }
};
CollectionAssert.AreEqual(expected, scr.CalculateMinimumAmountsOfChange(ct));
}
public void MinimizeAmountsOfChange_WithOneHundredDollarsAndTwentyTwoCents_SetsChangeToOneHundredDollarsTwoDimesTwoPennies()
{
CashTransaction ct = new CashTransaction(0, 10022);
SimpleCashRegister scr = new SimpleCashRegister();
Dictionary <CashDenominations, int> expected = new Dictionary <CashDenominations, int>()
{
{ CashDenominations.Dollars, 100 },
{ CashDenominations.Quarters, 0 },
{ CashDenominations.Dimes, 2 },
{ CashDenominations.Nickels, 0 },
{ CashDenominations.Pennies, 2 }
};
CollectionAssert.AreEqual(expected, scr.CalculateMinimumAmountsOfChange(ct));
}
public void MinimizeAmountsOfChange_WithOneDollarAndFourtyOneCents_SetsChangeToOneDollarBillAndOneQuarterAndOneDimeAndOneNickelAndOnePenny()
{
CashTransaction ct = new CashTransaction(0, 141);
SimpleCashRegister scr = new SimpleCashRegister();
Dictionary <CashDenominations, int> expected = new Dictionary <CashDenominations, int>()
{
{ CashDenominations.Dollars, 1 },
{ CashDenominations.Quarters, 1 },
{ CashDenominations.Dimes, 1 },
{ CashDenominations.Nickels, 1 },
{ CashDenominations.Pennies, 1 }
};
CollectionAssert.AreEqual(expected, scr.CalculateMinimumAmountsOfChange(ct));
}
public void MinimizeAmountsOfChange_WithZeroChange_SetsChangeToZeroForEachDenomination()
{
CashTransaction ct = new CashTransaction(0, 0);
SimpleCashRegister scr = new SimpleCashRegister();
Dictionary <CashDenominations, int> expected = new Dictionary <CashDenominations, int>()
{
{ CashDenominations.Dollars, 0 },
{ CashDenominations.Quarters, 0 },
{ CashDenominations.Dimes, 0 },
{ CashDenominations.Nickels, 0 },
{ CashDenominations.Pennies, 0 }
};
CollectionAssert.AreEqual(expected, scr.CalculateMinimumAmountsOfChange(ct));
}
// Check test standard output for randomness.
public void RandomizeAmountsOfChange_WithZeroCents_ReturnsChangeThatAddsUpCorrectlyForOneHundredIterations()
{
const int expected = 0;
const int numberOfIterations = 100;
CashTransaction ct = new CashTransaction(0, expected);
SimpleCashRegister scr = new SimpleCashRegister();
for (int i = 0; i < numberOfIterations; ++i)
{
Dictionary <CashDenominations, int> randomChange = scr.CalculateRandomAmountsOfChange(ct);
int result = 0;
foreach (var count in randomChange)
{
result += (int)count.Key * count.Value;
Console.Write("{0} {1} ", count.Key, count.Value);
}
Console.Write("\n");
Assert.AreEqual(expected, result);
}
}
public void IsDivsibleByThree_WithNegativeSeven_ReturnsFalse()
{
SimpleCashRegister scr = new SimpleCashRegister();
Assert.IsFalse(scr.IsDivsibleByThree(-7));
}
public void IsDivsibleByThree_WithOneHundredandOne_ReturnsFalse()
{
SimpleCashRegister scr = new SimpleCashRegister();
Assert.IsFalse(scr.IsDivsibleByThree(101));
}
public void IsDivsibleByThree_WithNegativeOneHundredandTwo_ReturnsTrue()
{
SimpleCashRegister scr = new SimpleCashRegister();
Assert.IsTrue(scr.IsDivsibleByThree(-102));
}
public void IsDivsibleByThree_WithThree_ReturnsTrue()
{
SimpleCashRegister scr = new SimpleCashRegister();
Assert.IsTrue(scr.IsDivsibleByThree(3));
}
