Incompatible tests ignored for certain providers

Author: alex-kulakov

Orm/Xtensive.Orm.Tests/Linq/TagTest.cs

@@ -152,6 +152,7 @@ protected override void CheckRequirements() =>
     [TestCase(TagsLocation.AfterStatement, TestName = nameof(TagsLocation.AfterStatement))]
     public void VariousPlacements(TagsLocation tagsLocation)
     {
+      Require.ProviderIsNot(StorageProvider.Sqlite | StorageProvider.Firebird);
       var config = Domain.Configuration.Clone();
       config.TagsLocation = tagsLocation;
       config.UpgradeMode = DomainUpgradeMode.Skip;
@@ -290,6 +291,8 @@ public void TagInConcat()
     [Test]
     public void TagInExcept()
     {
+      Require.ProviderIsNot(StorageProvider.MySql | StorageProvider.Firebird);
+
       var session = Session.Demand();
 
       using (var innerTx = session.OpenTransaction(TransactionOpenMode.New)) {
@@ -310,6 +313,7 @@ public void TagInExcept()
     [Test]
     public void TagInIntersect()
     {
+      Require.ProviderIsNot(StorageProvider.MySql | StorageProvider.Firebird);
       var session = Session.Demand();
 
       using (var innerTx = session.OpenTransaction(TransactionOpenMode.New)) {