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Problem Solving Followup - unfinished #26

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49 changes: 37 additions & 12 deletions UnitTestProject/LinqUnitTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,9 @@ public class LinqUnitTests
private List<Transaction> transactions;
private List<Transaction> originalTransactions;

private const string PRODUCT_NAME_CHIPS = "Chips";
private const string USERNAME_JASON = "Jason";

[SetUp]
public void Test_Initialize()
{
Expand Down Expand Up @@ -66,88 +69,110 @@ public void Test_WhatIsTheTotalNumberOfTransactions()
[Test]
public void Test_WhatIsTheTotalQuantityPurchased()
{
var result = ""; // TODO
var result = transactions.Sum(s => s.Quantity);

Assert.AreEqual(3001, result);
}

[Test]
public void Test_WhatIsTheTotalQuantityPurchasedIn2016()
{
var result = ""; // TODO
var result = transactions
.Where(s => s.Date.Year == 2016)
.Sum(s => s.Quantity);

Assert.AreEqual(1160, result);
}

[Test]
public void Test_WhatIsTheTotalQuantityPurchasedInThePast7Days()
{
var result = ""; // TODO

var result = transactions
.Where(s => s.Date <= DateTime.Today && s.Date >= DateTime.Today.AddDays(-7))
.Sum(s => s.Quantity);

Assert.AreEqual(32, result);
}

[Test]
public void Test_HowManyTransactionsBoughtMoreThan1Quantity()
{
var result = ""; // TODO
var result = transactions.Count(s=>s.Quantity > 1);

Assert.AreEqual(1001, result);
}

[Test]
public void Test_HowManyTransactionsOccuredOnSundays()
{
var result = ""; // TODO
var result = transactions
.Count(t => t.Date.DayOfWeek == DayOfWeek.Sunday);

Assert.AreEqual(267, result);
}

[Test]
public void Test_WhatIsTheAverageQuantityPurchased()
{
var result = 0; // TODO
var result = transactions
.Average(s => s.Quantity);

Assert.AreEqual(1.5005, result, 0.0001);
}

[Test]
public void Test_HowManyBagsOfChipsHaveBeenBought()
{
var result = ""; // TODO
var result = transactions
.Where(a => a.ProductName == PRODUCT_NAME_CHIPS)
.Sum(a => a.Quantity);

Assert.AreEqual(390, result);
}

Func<Transaction, bool> JasonBoughtChips = a => a.UserName == USERNAME_JASON && a.ProductName == PRODUCT_NAME_CHIPS;

[Test]
public void Test_HowManyBagsOfChipsHasJasonBought()
{
var result = ""; // TODO
var result = transactions
.Where(JasonBoughtChips)
.Sum(a => a.Quantity);

Assert.AreEqual(44, result);
}

[Test]
public void Test_HowManyBagsOfChipsDidJasonBuyIn2015()
{
var result = ""; // TODO
var result = transactions
.Where(JasonBoughtChips)
.Where(a=> a.Date.Year == 2015)
.Sum(a => a.Quantity);


Assert.AreEqual(33, result);
}

[Test]
public void Test_HowManyBagsOfChipsDidJasonBuyInMay2016()
{
var result = ""; // TODO
var result = transactions
.Where(JasonBoughtChips)
.Where(a=>a.Date.Month == 5 && a.Date.Year == 2016)
.Sum(a=>a.Quantity);

Assert.AreEqual(2, result);
}

[Test]
public void Test_WhatProductSellsTheMostBetween12And1PM()
{
//var result = transactions
// .Where(a => a.Date.TimeOfDay > new TimeSpan(12, 0, 0) && a.Date.TimeOfDay < new TimeSpan(13, 0, 0))
// .Select(a => new { a.ProductName, a.Quantity })
// .
var result = ""; // TODO

Assert.AreEqual("Candy", result);
}

Expand Down