Add AsNumbers() method

Closes #23

Author: Krusen

BencodeNET.Tests/Objects/BListTests.cs

@@ -154,9 +154,7 @@ public void AsType_ConvertsToListOfType()
         public void AsType_ContainingWrongType_ThrowsInvalidCastException()
         {
             var blist = new BList {1, "2", 3};
-
             Action action = () => blist.AsType<BNumber>();
-
             action.ShouldThrow<InvalidCastException>();
         }
 
@@ -174,9 +172,25 @@ public void AsStrings_ConvertsToListOfStrings()
         public void AsStrings_ContainingNonBStringType_ThrowsInvalidCastException()
         {
             var blist = new BList {"a", "b", 3};
-
             Action action = () => blist.AsStrings();
+            action.ShouldThrow<InvalidCastException>();
+        }
 
+        [Fact]
+        public void AsNumbers_ConvertsToListOfLongs()
+        {
+            var blist = new BList {1, 2, 3};
+            var numbers = blist.AsNumbers();
+
+            numbers.Should().HaveCount(3);
+            numbers.Should().ContainInOrder(1L, 2L, 3L);
+        }
+
+        [Fact]
+        public void AsNumbers_ContainingNonBNumberType_ThrowsInvalidCastException()
+        {
+            var blist = new BList {1, 2, "3"};
+            Action action = () => blist.AsNumbers();
             action.ShouldThrow<InvalidCastException>();
         }
     }

BencodeNET/Objects/BList.cs

@@ -117,10 +117,9 @@ public T Get<T>(int index) where T : class, IBObject
         }
 
         /// <summary>
-        /// Assumes all elements are <see cref="BString"/> and returns
-        /// an enumerable of their string representation.
+        /// Assumes all elements are <see cref="BString"/>
+        /// and returns an enumerable of their string representation.
         /// </summary>
-        /// <returns></returns>
         public IEnumerable<string> AsStrings()
         {
             return AsStrings(Encoding.UTF8);
@@ -130,13 +129,22 @@ public IEnumerable<string> AsStrings()
         /// Assumes all elements are <see cref="BString"/> and returns
         /// an enumerable of their string representation using the specified encoding.
         /// </summary>
-        /// <returns></returns>
         public IEnumerable<string> AsStrings(Encoding encoding)
         {
             IList<BString> bstrings = this.AsType<BString>();
             return bstrings.Select(x => x.ToString(encoding));
         }
 
+        /// <summary>
+        /// Assumes all elements are <see cref="BNumber"/>
+        /// and returns an enumerable of their <c>long</c> value.
+        /// </summary>
+        public IEnumerable<long> AsNumbers()
+        {
+            IList<BNumber> bnumbers = this.AsType<BNumber>();
+            return bnumbers.Select(x => x.Value);
+        }
+
         /// <summary>
         /// Attempts to cast all elements to the specified type.
         /// </summary>
@@ -145,7 +153,7 @@ public IEnumerable<string> AsStrings(Encoding encoding)
         /// <exception cref="InvalidCastException">
         /// An element is not of type <typeparamref name="T"/>.
         /// </exception>
-        public BList<T> AsType<T>() where T : class,IBObject
+        public BList<T> AsType<T>() where T : class, IBObject
         {
             try
             {

BencodeNET/project.json

@@ -1,6 +1,6 @@
 {
   "$schema": "http://json.schemastore.org/project",
-  "version": "2.2.1-*",
+  "version": "2.2.2-*",
   "title": "BencodeNET",
   "authors": [ "Søren Kruse" ],
   "description": "A library for encoding and decoding bencode (e.g. torrent files)",