Change unsupported culture log level (#12153)

* Change unsupported culture log level to Debug

* Fix unit tests

Author: hishamco

src/Middleware/Localization/src/RequestCultureProviderLoggerExtensions.cs

@@ -16,11 +16,11 @@ internal static class RequestCultureProviderLoggerExtensions
         static RequestCultureProviderLoggerExtensions()
         {
             _unsupportedCulture = LoggerMessage.Define<string, IList<StringSegment>>(
-                LogLevel.Warning,
+                LogLevel.Debug,
                  new EventId (1, "UnsupportedCulture"),
                 "{requestCultureProvider} returned the following unsupported cultures '{cultures}'.");
             _unsupportedUICulture = LoggerMessage.Define<string, IList<StringSegment>>(
-                LogLevel.Warning,
+                LogLevel.Debug,
                  new EventId(2, "UnsupportedUICulture"),
                 "{requestCultureProvider} returned the following unsupported UI Cultures '{uiCultures}'.");
         }

src/Middleware/Localization/test/UnitTests/CookieRequestCultureProviderTest.cs

@@ -147,7 +147,7 @@ public async Task GetDefaultCultureInfoIfCookieDoesNotExist()
         }
 
         [Fact]
-        public async Task RequestLocalizationMiddleware_LogsWarningsForUnsupportedCultures()
+        public async Task RequestLocalizationMiddleware_LogsDebugForUnsupportedCultures()
         {
             var sink = new TestSink(
                 TestSink.EnableWithTypeName<RequestLocalizationMiddleware>,
@@ -195,12 +195,12 @@ public async Task RequestLocalizationMiddleware_LogsWarningsForUnsupportedCultur
             var expectedMessage = $"{nameof(CookieRequestCultureProvider)} returned the following unsupported cultures '??'.";
 
             var write = Assert.Single(sink.Writes);
-            Assert.Equal(LogLevel.Warning, write.LogLevel);
+            Assert.Equal(LogLevel.Debug, write.LogLevel);
             Assert.Equal(expectedMessage, write.State.ToString());
         }
 
         [Fact]
-        public async Task RequestLocalizationMiddleware_LogsWarningsForUnsupportedUICultures()
+        public async Task RequestLocalizationMiddleware_LogsDebugForUnsupportedUICultures()
         {
             var sink = new TestSink(
                 TestSink.EnableWithTypeName<RequestLocalizationMiddleware>,
@@ -247,7 +247,7 @@ public async Task RequestLocalizationMiddleware_LogsWarningsForUnsupportedUICult
 
             var expectedMessage = $"{nameof(CookieRequestCultureProvider)} returned the following unsupported UI Cultures '??'.";
             var write = Assert.Single(sink.Writes);
-            Assert.Equal(LogLevel.Warning, write.LogLevel);
+            Assert.Equal(LogLevel.Debug, write.LogLevel);
             Assert.Equal(expectedMessage, write.State.ToString());
         }
     }