add test for a long argument containing only one character

Author: jpdillingham

tests/Utility.CommandLine.Arguments.Tests/ArgumentsTests.cs

@@ -265,6 +265,15 @@ public void ParseOperand()
             Assert.Equal("two", test.OperandList[0]);
         }
 
+        [Fact]
+        public void ParseSingleCharacterLong()
+        {
+            Arguments test = Arguments.Parse("--t one");
+
+            Assert.Single(test.ArgumentDictionary);
+            Assert.Equal("one", test.ArgumentDictionary["t"]);
+        }
+
         [Fact]
         public void ParseOperands()
         {