public void MaxProfit_prices輸入null_應拋出ArgumentNullException()
{
// arrange
int[] prices = null;
var sut = new Q0121_BestTimeToBuyAndSellStock();
// act
Action actual = () => sut.MaxProfit(prices);
// assert
actual.Should().Throw <ArgumentNullException>()
.Which.Message.Should().Contain("不能為null");
}
public void MaxProfit_prices輸入empty_應回傳0()
{
// arrange
var prices = new int[] { };
var expect = 0;
var sut = new Q0121_BestTimeToBuyAndSellStock();
// act
var actual = sut.MaxProfit(prices);
// assert
actual.Should().Be(expect);
}
public void MaxProfit_prices輸入715364_應回傳5()
{
// arrange
var prices = new int[] { 7, 1, 5, 3, 6, 4 };
var expect = 5;
var sut = new Q0121_BestTimeToBuyAndSellStock();
// act
var actual = sut.MaxProfit(prices);
// assert
actual.Should().Be(expect);
}
