code reviews

lib/errors/mapd/Mapd.Tests.cs

@@ -22,7 +22,7 @@ public class MapdTests
         Assert.Contains("Mapd", mapd.Name, StringComparison.Ordinal);
 
         mapd.Update(100, 105);
-        Assert.NotEqual(0, mapd.Last.Time);
+        Assert.NotEqual(0, mapd.Last.Value);
     }
 
     [Fact]
@@ -353,4 +353,4 @@ public class MapdTests
         var result = mapd.Update(10, 0);
         Assert.True(double.IsFinite(result.Value));
     }
-}
+}