Merge pull request #334 from skomis-mm/logLvlCaseInsens

Case insensitive log level support

Author: nblumhardt

src/Serilog.Settings.Configuration/Settings/Configuration/ConfigurationReader.cs

@@ -578,10 +578,9 @@ internal static bool IsValidSwitchName(string input)
 
         static LogEventLevel ParseLogEventLevel(string value)
         {
-            if (!Enum.TryParse(value, out LogEventLevel parsedLevel))
+            if (!Enum.TryParse(value, ignoreCase: true, out LogEventLevel parsedLevel))
                 throw new InvalidOperationException($"The value {value} is not a valid Serilog level.");
             return parsedLevel;
         }
-
     }
 }

test/Serilog.Settings.Configuration.Tests/ConfigurationReaderTests.cs

@@ -204,6 +204,7 @@ public void FlatMinimumLevelCorrectOneIsEnabledOnLogger(IConfigurationRoot root,
         public static IEnumerable<object[]> ObjectMinimumLevel => new List<object[]>
         {
             new object[] { GetConfigRoot(appsettingsJsonLevel: minimumLevelObjectTemplate.Format(LogEventLevel.Error)), LogEventLevel.Error },
+            new object[] { GetConfigRoot(appsettingsJsonLevel: minimumLevelObjectTemplate.Format(LogEventLevel.Error.ToString().ToUpper())), LogEventLevel.Error },
             new object[] { GetConfigRoot(appsettingsDevelopmentJsonLevel: minimumLevelObjectTemplate.Format(LogEventLevel.Error)), LogEventLevel.Error },
             new object[] { GetConfigRoot(envVariables: new Dictionary<string, string>(){{minimumLevelObjectKey, LogEventLevel.Error.ToString() } }), LogEventLevel.Error },
             new object[] { GetConfigRoot(