Better comments

UpsilonTests/GeneralTests/CommentTests.cs

@@ -0,0 +1,28 @@
+using Upsilon.Evaluator;
+using Xunit;
+
+namespace UpsilonTests.GeneralTests
+{
+    public class CommentTests : TestClass
+    {
+        public CommentTests(StaticScriptFixture fix) : base(fix)
+        {
+        }
+
+        [Fact]
+        public void BasicComment()
+        {
+            const string input = @"
+-- test comment
+return 100
+";
+            var script = new Script(input, BoundScope, StaticScope);
+            Assert.Empty(script.Diagnostics.Messages);
+            var result = script.Evaluate<long>();
+            Assert.Empty(script.Diagnostics.Messages);
+            Assert.Equal(100, result);
+
+        }
+
+    }
+}