Refactor System.IO.Path (#91)

Author: CoryCharlton

System.IO.FileSystem.UnitTests/FileUnitTests.cs

@@ -9,7 +9,7 @@ public class FileUnitTests
         [Setup]
         public void Setup()
         {
-            //Assert.SkipTest("These test will only run on real hardware. Comment out this line if you are testing on real hardware.");
+            Assert.SkipTest("These test will only run on real hardware. Comment out this line if you are testing on real hardware.");
         }
 
         private const string Root = @"I:\";

System.IO.FileSystem.UnitTests/PathInternalUnitTests.cs

@@ -0,0 +1,19 @@
+using nanoFramework.TestFramework;
+
+namespace System.IO.FileSystem.UnitTests
+{
+    [TestClass]
+    public class PathInternalUnitTests
+    {
+        [TestMethod]
+        public void IsValidDriveChar_returns_true()
+        {
+            var tests = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ".ToCharArray();
+
+            foreach (var test in tests)
+            {
+                Assert.IsTrue(PathInternal.IsValidDriveChar(test), $"Case: {test}");
+            }
+        }
+    }
+}