- added extensions to generate random items and numbers from collections

Author: itb2k13

ExtendFurther.Tests/CollectionExtensionTests.cs

@@ -10,9 +10,15 @@ class CollectionExtensionTests
         [TestCase(new string[] { "" }, true)]
         [TestCase(new string[] { "a", "b" }, true)]
         [TestCase(new string[] { "a", "b", "b" }, false)]
-        public void ExtensionListExtensionDeterminesIfItemsInListAreDistinct(string[] s, bool isDistinct)
+        public void Extension_ListExtension_IsDistinct_Determines_If_Items_In_List_Are_Distinct(string[] s, bool isDistinct)
         {
             Assert.That(s.ToList().IsDistinct, Is.EqualTo(isDistinct));
         }
+
+        [TestCase(new string[] { "a", "b", "c", "d" }, null)]
+        public void Extension_ListExtension_Rand(string[] values, int i)
+        {
+            Assert.That(values.Contains(values.Rand()));
+        }
     }
 }

ExtendFurther.Tests/NumericalExtensionTests.cs

@@ -48,14 +48,14 @@ public void Extension_NumericalExtension_Rnd_Rounds_To_Expected_Decimal_Places(d
         }
 
         [Test]
-        [TestCase(0, "This Month")]
-        [TestCase(1, "Last Month")]
-        [TestCase(12, "This Year")]
-        [TestCase(24, "Last Year")]
-        [TestCase(50, "Last 50 Months")]
-        public void Extension_StringExtension_ToDateRangeFilterOption(int i, string expectedResult)
+        [TestCase(0, 0)]
+        [TestCase(0, 10)]
+        [TestCase(0, 1)]
+        [TestCase(0, 1)]
+        [TestCase(5, 100)]
+        public void Extension_NumericalExtension_Rand(int i, int j)
         {
-            Assert.That(i.ToDateRangeFilterOption(), Is.EqualTo(expectedResult));
+            Assert.That(i.RandPos(j), Is.GreaterThanOrEqualTo(i).And.LessThanOrEqualTo(j));
         }
     }
 }

ExtendFurther.Tests/StringExtensionTests.cs

@@ -95,6 +95,18 @@ public void Extension_StringExtension_Truncate(string s, int maxChars, string ex
             Assert.That(s.Truncate(maxChars), Is.EqualTo(expectedResult));
         }
 
+
+        [Test]
+        [TestCase(0, "This Month")]
+        [TestCase(1, "Last Month")]
+        [TestCase(12, "This Year")]
+        [TestCase(24, "Last Year")]
+        [TestCase(50, "Last 50 Months")]
+        public void Extension_StringExtension_ToDateRangeFilterOption(int i, string expectedResult)
+        {
+            Assert.That(i.ToDateRangeFilterOption(), Is.EqualTo(expectedResult));
+        }
+
     }
 }
 

ExtendFurther/CollectionExtensions.cs

@@ -41,10 +41,12 @@ public static List<T> DequeueMany<T>(this Queue<T> queue, int chunkSize)
 
             return values;
         }
+
         public static string Get(this Dictionary<string, object> d, string key)
         {
             return d.ContainsKey(key) ? d[key]?.ToString() : string.Empty;
         }
+
         public static List<KeyValuePair<int, int>> ToKeyValuePair(this int[,] array)
         {
             var result = new List<KeyValuePair<int, int>>();
@@ -55,17 +57,25 @@ public static List<KeyValuePair<int, int>> ToKeyValuePair(this int[,] array)
 
             return result;
         }
+
         public static List<int> Enumerator(this int i)
         {
             return Enumerable.Range(0, Math.Abs(i)).ToList().Select(j => i < 0 ? j * -1 : j).ToList();
         }
+
         public static bool IsDistinct(this List<string> s)
         {
             return s?.Distinct().Count() == s?.Count();
         }
+
         public static IDictionary<TKey, TValue> AsReadOnly<TKey, TValue>(this IDictionary<TKey, TValue> dictionary)
         {
             return new ReadOnlyDictionary<TKey, TValue>(dictionary);
         }
+
+        public static string Rand(this IEnumerable<string> values)
+        {
+            return values.ElementAt(0.RandPos(values.Count() - 1));
+        }
     }
 }

ExtendFurther/NumericalExtensions.cs

@@ -28,9 +28,15 @@ public static decimal Rnd(this decimal d, int i)
         {
             return Math.Round(d, i);
         }
+
         public static string ToDateRangeFilterOption(this int i)
         {
             return i <= 0 ? "This Month" : i == 1 ? "Last Month" : i <= 12 ? "This Year" : i <= 24 ? "Last Year" : $"Last {i} Months";
         }
+
+        public static int RandPos(this int i, int j)
+        {
+            return (new Random(Guid.NewGuid().GetHashCode())).Next(i, j + 1);
+        }
     }
 }

ExtendFurther/Properties/AssemblyInfo.cs

@@ -32,5 +32,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.2.*")]
-[assembly: AssemblyFileVersion("1.0.2.0")]
+[assembly: AssemblyVersion("1.0.3.*")]
+[assembly: AssemblyFileVersion("1.0.3.0")]

Package.nuspec

@@ -2,7 +2,7 @@
 <package >
   <metadata>
     <id>ExtendFurther</id>
-    <version>1.0.2</version>
+    <version>1.0.3</version>
     <authors>itcombox@gmail.com</authors>
     <owners>itcombox@gmail.com</owners>
     <licenseUrl>https://github.com/itb2k13/ExtendFurther/blob/master/LICENSE</licenseUrl>