From 538e38be363d7e845eccfe3063a8a4159f1a3861 Mon Sep 17 00:00:00 2001
From: VarianChrisMacKinnon <christopher.mackinnon@varian.com>
Date: Wed, 31 Aug 2016 16:22:04 -0500
Subject: [PATCH] Problem Solving Follow-up

---
 UnitTestProject/LinqUnitTests.cs | 45 ++++++++++++++++++++++++--------
 1 file changed, 34 insertions(+), 11 deletions(-)

diff --git a/UnitTestProject/LinqUnitTests.cs b/UnitTestProject/LinqUnitTests.cs
index decf5bd..53129b1 100644
--- a/UnitTestProject/LinqUnitTests.cs
+++ b/UnitTestProject/LinqUnitTests.cs
@@ -66,7 +66,7 @@ public void Test_WhatIsTheTotalNumberOfTransactions()
         [Test]
         public void Test_WhatIsTheTotalQuantityPurchased()
         {
-            var result = ""; // TODO
+            var result = transactions.Sum(t => t.Quantity);
 
             Assert.AreEqual(3001, result);
         }
@@ -74,7 +74,9 @@ public void Test_WhatIsTheTotalQuantityPurchased()
         [Test]
         public void Test_WhatIsTheTotalQuantityPurchasedIn2016()
         {
-            var result = ""; // TODO
+            var result = transactions
+                            .Where(t => t.Date.Year == 2016)
+                            .Sum(t => t.Quantity);
 
             Assert.AreEqual(1160, result);
         }
@@ -82,7 +84,9 @@ public void Test_WhatIsTheTotalQuantityPurchasedIn2016()
         [Test]
         public void Test_WhatIsTheTotalQuantityPurchasedInThePast7Days()
         {
-            var result = ""; // TODO
+            var result = transactions
+                            .Where(t => t.Date > DateTime.Today.AddDays(-7))
+                            .Sum(t => t.Quantity);
 
             Assert.AreEqual(32, result);
         }
@@ -90,7 +94,8 @@ public void Test_WhatIsTheTotalQuantityPurchasedInThePast7Days()
         [Test]
         public void Test_HowManyTransactionsBoughtMoreThan1Quantity()
         {
-            var result = ""; // TODO
+            var result = transactions
+                            .Count(trans => trans.Quantity > 1);
 
             Assert.AreEqual(1001, result);
         }
@@ -98,7 +103,8 @@ public void Test_HowManyTransactionsBoughtMoreThan1Quantity()
         [Test]
         public void Test_HowManyTransactionsOccuredOnSundays()
         {
-            var result = ""; // TODO
+            var result = transactions
+                            .Count(trans => trans.Date.DayOfWeek == DayOfWeek.Sunday);
 
             Assert.AreEqual(267, result);
         }
@@ -106,7 +112,7 @@ public void Test_HowManyTransactionsOccuredOnSundays()
         [Test]
         public void Test_WhatIsTheAverageQuantityPurchased()
         {
-            var result = 0; // TODO
+            var result = transactions.Average(trans => trans.Quantity);
 
             Assert.AreEqual(1.5005, result, 0.0001);
         }
@@ -114,7 +120,9 @@ public void Test_WhatIsTheAverageQuantityPurchased()
         [Test]
         public void Test_HowManyBagsOfChipsHaveBeenBought()
         {
-            var result = ""; // TODO
+            var result = transactions
+                            .Where(trans => trans.ProductName.Equals("Chips"))
+                            .Sum(trans => trans.Quantity);
 
             Assert.AreEqual(390, result);
         }
@@ -122,7 +130,9 @@ public void Test_HowManyBagsOfChipsHaveBeenBought()
         [Test]
         public void Test_HowManyBagsOfChipsHasJasonBought()
         {
-            var result = ""; // TODO
+            var result = transactions
+                            .Where(trans => trans.ProductName.Equals("Chips") && trans.UserName.Equals("Jason"))
+                            .Sum(trans => trans.Quantity);
 
             Assert.AreEqual(44, result);
         }
@@ -130,7 +140,11 @@ public void Test_HowManyBagsOfChipsHasJasonBought()
         [Test]
         public void Test_HowManyBagsOfChipsDidJasonBuyIn2015()
         {
-            var result = ""; // TODO
+            var result = transactions
+                            .Where(trans => trans.ProductName.Equals("Chips")
+                                        && trans.UserName.Equals("Jason")
+                                        && trans.Date.Year == 2015)
+                            .Sum(trans => trans.Quantity);
 
             Assert.AreEqual(33, result);
         }
@@ -138,7 +152,12 @@ public void Test_HowManyBagsOfChipsDidJasonBuyIn2015()
         [Test]
         public void Test_HowManyBagsOfChipsDidJasonBuyInMay2016()
         {
-            var result = ""; // TODO
+            var result = transactions
+                            .Where(trans => trans.ProductName.Equals("Chips")
+                                        && trans.UserName.Equals("Jason")
+                                        && trans.Date.Year == 2016
+                                        && trans.Date.Month == 5)
+                            .Sum(trans => trans.Quantity);
 
             Assert.AreEqual(2, result);
         }
@@ -146,8 +165,12 @@ public void Test_HowManyBagsOfChipsDidJasonBuyInMay2016()
         [Test]
         public void Test_WhatProductSellsTheMostBetween12And1PM()
         {
-            var result = ""; // TODO
+            var result = transactions
+                            .Where(trans => trans.Date.Hour == 12)
+                            .GroupBy(trans => trans.ProductName, trans => trans.Quantity, (key, values) => new { ProductName = key, Quantities = values.Sum() })
+                            .OrderByDescending(group => group.Quantities).First().ProductName;
 
+                            
             Assert.AreEqual("Candy", result);
         }