Minor: `LineMapping` and `MappingLocation` debug visualizations were types' full names

- add `ToString()` overrides for these classes

Nits:
- improve assertion failures about code mapping mismatches
- add `GENERATE_BASELINES` reminder to test project.json

src/Microsoft.AspNet.Razor/Generator/Compiler/LineMappings/LineMapping.cs

@@ -1,6 +1,8 @@
 // Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
+using System.Globalization;
+
 namespace Microsoft.AspNet.Razor.Generator.Compiler
 {
     public class LineMapping
@@ -40,5 +42,10 @@ namespace Microsoft.AspNet.Razor.Generator.Compiler
         {
             return !left.Equals(right);
         }
+
+        public override string ToString()
+        {
+            return string.Format(CultureInfo.CurrentUICulture, "{0} -> {1}", DocumentLocation, GeneratedLocation);
+        }
     }
 }

src/Microsoft.AspNet.Razor/Generator/Compiler/LineMappings/MappingLocation.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
+using System.Globalization;
 using Microsoft.AspNet.Razor.Text;
 
 namespace Microsoft.AspNet.Razor.Generator.Compiler
@@ -37,6 +38,16 @@ namespace Microsoft.AspNet.Razor.Generator.Compiler
             return base.GetHashCode();
         }
 
+        public override string ToString()
+        {
+            return string.Format(
+                CultureInfo.CurrentCulture, "({0}:{1},{2} [{3}])",
+                AbsoluteIndex,
+                LineIndex,
+                CharacterIndex,
+                ContentLength);
+        }
+
         public static bool operator ==(MappingLocation left, MappingLocation right)
         {
             return left.Equals(right);

test/Microsoft.AspNet.Razor.Test/Generator/RazorCodeGeneratorTest.cs

@@ -181,17 +181,13 @@ namespace Microsoft.AspNet.Razor.Test.Generator
 
                 if (expectedDesignTimePragmas != null)
                 {
-                    Assert.True(results.DesignTimeLineMappings != null && results.DesignTimeLineMappings.Count > 0);
+                    Assert.True(results.DesignTimeLineMappings != null); // Guard
+                    for (var i = 0; i < expectedDesignTimePragmas.Count && i < results.DesignTimeLineMappings.Count; i++)
+                    {
+                        Assert.Equal(expectedDesignTimePragmas[i], results.DesignTimeLineMappings[i]);
+                    }
 
                     Assert.Equal(expectedDesignTimePragmas.Count, results.DesignTimeLineMappings.Count);
-
-                    for (var i = 0; i < expectedDesignTimePragmas.Count; i++)
-                    {
-                        if (!expectedDesignTimePragmas[i].Equals(results.DesignTimeLineMappings[i]))
-                        {
-                            Assert.True(false, String.Format("Line mapping {0} is not equivalent.", i));
-                        }
-                    }
                 }
             }
         }

test/Microsoft.AspNet.Razor.Test/project.json

@@ -18,5 +18,8 @@
                 "System.Reflection.TypeExtensions": "4.0.0-beta-*"
             }
         }
+    },
+    "compilationOptions": {
+        "define": [ "__RemoveThisBitTo__GENERATE_BASELINES" ]
     }
 }