Ticks part extraction tests ignored for Oracle and Postresql

no support for nanoseconds in these RDBMSs

Author: alex-kulakov

Orm/Xtensive.Orm.Tests/Linq/DateTimeAndDateTimeOffset/DateTime/PartsExtractionTest.cs

@@ -192,6 +192,8 @@ public void ExtractDayOfWeekTest()
     [Test]
     public void ExtractTimeOfDayTicksTest()
     {
+      Require.ProviderIsNot(StorageProvider.PostgreSql | StorageProvider.Oracle);
+
       ExecuteInsideSession(() => {
         RunTest<SingleDateTimeEntity>(c => c.DateTime.TimeOfDay.Ticks == FirstDateTime.TimeOfDay.Ticks);
         RunWrongTest<SingleDateTimeEntity>(c => c.DateTime.TimeOfDay.Ticks < FirstDateTime.TimeOfDay.Ticks);

Orm/Xtensive.Orm.Tests/Linq/DateTimeAndDateTimeOffset/DateTimeOffset/PartsExtractionTest.cs

@@ -192,6 +192,8 @@ public void ExtractTimeOfDayWithMillisecondsTest()
     [Test]
     public void ExtractTimeOfDayTicksTest()
     {
+      Require.ProviderIsNot(StorageProvider.PostgreSql | StorageProvider.Oracle);
+
       ExecuteInsideSession(() => {
         var firstDateTimeOffset = TryMoveToLocalTimeZone(FirstDateTimeOffset);
         RunTest<SingleDateTimeOffsetEntity>(c => c.DateTimeOffset.TimeOfDay.Ticks == firstDateTimeOffset.TimeOfDay.Ticks);