private void ButtonEventListener(object sender, EventArgs eventArgs)
{
decimal amountReturnedFromClear = CoinReturn.Clear();
if (amountReturnedFromClear > 0)
{
DialogService.ShowMessage("You receive: " + $"{amountReturnedFromClear:C}");
}
}
public void TestClearCallsCoinReturnUpdatedOnObservers()
{
CoinReturn coinReturn = new CoinReturn();
MockCoinReturnObserver mockCoinReturnObserverOne = new MockCoinReturnObserver();
MockCoinReturnObserver mockCoinReturnObserverTwo = new MockCoinReturnObserver();
coinReturn.RegisterObserver(mockCoinReturnObserverOne);
coinReturn.RegisterObserver(mockCoinReturnObserverTwo);
coinReturn.Clear();
Assert.AreEqual(1, mockCoinReturnObserverOne.NumberOfTimesCoinPurseUpdatedCalled);
Assert.AreEqual(1, mockCoinReturnObserverTwo.NumberOfTimesCoinPurseUpdatedCalled);
}
public void TestClearReturnsValueOfAllCoins(decimal coinOneValue, decimal coinTwoValue, decimal expectedTotalValue)
{
CoinReturn coinReturn = new CoinReturn();
coinReturn.AddCoin(new MockCoin()
{
ValueToReturn = coinOneValue
});
coinReturn.AddCoin(new MockCoin()
{
ValueToReturn = coinTwoValue
});
Assert.AreEqual(expectedTotalValue, coinReturn.Clear());
}
public void TestClearEmptiesCoinList()
{
CoinReturn coinReturn = new CoinReturn();
MockCoin firstCoinAdded = new MockCoin();
MockCoin secondCoinAdded = new MockCoin();
MockCoin thirdCoinAdded = new MockCoin();
coinReturn.AddCoin(firstCoinAdded);
coinReturn.AddCoin(secondCoinAdded);
coinReturn.AddCoin(thirdCoinAdded);
coinReturn.Clear();
Assert.AreEqual(new List <ICoin>(), coinReturn.Coins);
}