Adding list contains extension + test

entelect · Oct 3, 2014 · 52c7569 · 52c7569
1 parent 9140682
commit 52c7569
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Showing 2 changed files with 23 additions and 1 deletion.
diff --git a/src/Entelect/Strings/StringExtensions.cs b/src/Entelect/Strings/StringExtensions.cs
@@ -1,4 +1,7 @@
 using System;
+using System.Collections.Generic;
+using System.Linq;
+
 // ReSharper disable once CheckNamespace - All extensions are within the same name space otherwise they don't show up in intellisense
 
 
@@ -20,5 +23,17 @@ public static bool Contains(this string input, string value, StringComparison st
         {
             return input.IndexOf(value, stringComparison) >= 0;
         }
+
+        /// <summary>
+        /// Determines whether the provided list of strings contains the specified string using the provided StringComparison object.
+        /// </summary>
+        /// <param name="input">The input.</param>
+        /// <param name="value">The value.</param>
+        /// <param name="stringComparison">The string comparison object to use.</param>
+        /// <returns>True if the list contains the value otherwise false</returns>
+        public static bool Contains(this IEnumerable<string> input, string value, StringComparison stringComparison)
+        {
+            return input.Any(item => item.Equals(value, stringComparison));
+        }
     }
 }
diff --git a/test/Entelect.Tests/Strings/StringExtensionsTests.cs b/test/Entelect.Tests/Strings/StringExtensionsTests.cs
@@ -7,10 +7,17 @@ namespace Entelect.Tests.Strings
     public class StringExtensionsTests
     {
         [Test]
-        public void CanCompareIgnoringCase()
+        public void ContainsIgnoringCase()
         {
             var doesContain = "asd".Contains("S",StringComparison.OrdinalIgnoreCase);
             Assert.True(doesContain);
         }
+        [Test]
+        public void ListContainsIgnoringCase()
+        {
+            var list = new[] {"asd", "qwe", "zxc"};
+            var doesContain = list.Contains("ASD", StringComparison.OrdinalIgnoreCase);
+            Assert.True(doesContain);
+        }
     }
 }