public void MakeChange_SmallAmount_Success()
{
// Arrange
var service = new CoinChangerService();
// Act
var change = service.CalculateChange(new List <Coin>
{
new Coin {
Id = 1, Quantity = 10, Value = 0.10M
},
new Coin {
Id = 2, Quantity = 10, Value = 0.20M
},
new Coin {
Id = 3, Quantity = 10, Value = 0.50M
},
new Coin {
Id = 4, Quantity = 10, Value = 1.00M
},
},
4.20M);
// Assert
Assert.IsTrue(change.SequenceEqual(new List <Coin>
{
new Coin {
Value = 1.00M, Quantity = 4
},
new Coin {
Value = 0.20M, Quantity = 1
},
}, new CoinChangeComparer()));
}
public void MakeChange_QuantityDepleted_Success()
{
// Arrange
var service = new CoinChangerService();
// Act
var change = service.CalculateChange(new List <Coin>
{
new Coin {
Id = 1, Quantity = 10, Value = 0.10M
},
new Coin {
Id = 2, Quantity = 10, Value = 0.20M
},
new Coin {
Id = 3, Quantity = 3, Value = 0.50M
},
new Coin {
Id = 4, Quantity = 3, Value = 1.00M
},
},
6.60M);
// Assert
Assert.IsTrue(change.SequenceEqual(new List <Coin>
{
new Coin {
Value = 1.00M, Quantity = 3
}, // 3
new Coin {
Value = 0.50M, Quantity = 3
}, // 4.5
new Coin {
Value = 0.20M, Quantity = 10
}, // 6.5
new Coin {
Value = 0.10M, Quantity = 1
}, // 6.6
}, new CoinChangeComparer()));
}
public void MakeChange_InsufficientCoinsPositiveRemain_Success()
{
// Arrange
var service = new CoinChangerService();
// Act
var change = service.CalculateChange(new List <Coin>
{
new Coin {
Id = 1, Quantity = 1, Value = 0.10M
},
new Coin {
Id = 2, Quantity = 0, Value = 0.20M
},
new Coin {
Id = 3, Quantity = 2, Value = 0.50M
},
new Coin {
Id = 4, Quantity = 1, Value = 1.00M
},
},
6.60M);
}