Add test class to verify feature support for latest server versions (#1820)

   Add ServerVersionSupportTest that asserts all feature flags for the latest
   supported MySQL and MariaDB versions, so that any change to feature support
   is detected during review.

Author: yykkibbb

test/EFCore.MySql.Tests/Infrastructure/ServerVersionSupportTest.cs

@@ -0,0 +1,138 @@
+using Microsoft.EntityFrameworkCore;
+using Xunit;
+
+namespace Pomelo.EntityFrameworkCore.MySql.Infrastructure
+{
+    public class ServerVersionSupportTest
+    {
+        [Fact]
+        public void Latest_MySql_version_feature_support()
+        {
+            var supports = MySqlServerVersion.LatestSupportedServerVersion.Supports;
+
+            // Supported features:
+            Assert.True(supports.DateTimeCurrentTimestamp);
+            Assert.True(supports.DateTime6);
+            Assert.True(supports.LargerKeyLength);
+            Assert.True(supports.RenameIndex);
+            Assert.True(supports.RenameColumn);
+            Assert.True(supports.WindowFunctions);
+            Assert.True(supports.DoubleCast);
+            Assert.True(supports.OuterApply);
+            Assert.True(supports.CrossApply);
+            Assert.True(supports.OuterReferenceInMultiLevelSubquery);
+            Assert.True(supports.Json);
+            Assert.True(supports.GeneratedColumns);
+            Assert.True(supports.NullableGeneratedColumns);
+            Assert.True(supports.ParenthesisEnclosedGeneratedColumnExpressions);
+            Assert.True(supports.DefaultCharSetUtf8Mb4);
+            Assert.True(supports.DefaultExpression);
+            Assert.True(supports.SpatialIndexes);
+            Assert.True(supports.SpatialReferenceSystemRestrictedColumns);
+            Assert.True(supports.SpatialSupportFunctionAdditions);
+            Assert.True(supports.SpatialSetSridFunction);
+            Assert.True(supports.SpatialDistanceFunctionImplementsAndoyer);
+            Assert.True(supports.SpatialDistanceSphereFunction);
+            Assert.True(supports.SpatialGeographic);
+            Assert.True(supports.ExceptIntercept);
+            Assert.True(supports.ExceptInterceptPrecedence);
+            Assert.True(supports.ImplicitBoolCheckUsesIndex);
+            Assert.True(supports.MySqlBug104294Workaround);
+            Assert.True(supports.FullTextParser);
+            Assert.True(supports.InformationSchemaCheckConstraintsTable);
+            Assert.True(supports.MySqlBugLimit0Offset0ExistsWorkaround);
+            Assert.True(supports.DescendingIndexes);
+            Assert.True(supports.CommonTableExpressions);
+            Assert.True(supports.JsonTable);
+            Assert.True(supports.JsonValue);
+            Assert.True(supports.JsonOverlaps);
+            Assert.True(supports.ValuesWithRows);
+            Assert.True(supports.FieldReferenceInTableValueConstructor);
+            Assert.True(supports.JsonTableImplementationWithoutMariaDbBugs);
+            Assert.True(supports.JsonTableImplementationWithAggregate);
+
+            // Unsupported features (update these assertions when MySQL adds support):
+            Assert.False(supports.FloatCast);
+            Assert.False(supports.AlternativeDefaultExpression);
+            Assert.False(supports.SpatialFunctionAdditions);
+            Assert.False(supports.JsonDataTypeEmulation);
+            Assert.False(supports.Sequences);
+            Assert.False(supports.MySqlBug96947Workaround);
+            Assert.False(supports.IdentifyJsonColumsByCheckConstraints);
+            Assert.False(supports.Returning);
+            Assert.False(supports.LimitWithinInAllAnySomeSubquery);
+            Assert.False(supports.LimitWithNonConstantValue);
+            Assert.False(supports.Values);
+            Assert.False(supports.WhereSubqueryReferencesOuterQuery);
+            Assert.False(supports.CollationCharacterSetApplicabilityWithFullCollationNameColumn);
+            Assert.False(supports.JsonTableImplementationStable);
+            Assert.False(supports.JsonTableImplementationWithoutMySqlBugs);
+            Assert.False(supports.JsonTableImplementationUsingParameterAsSourceWithoutEngineCrash);
+        }
+
+        [Fact]
+        public void Latest_MariaDb_version_feature_support()
+        {
+            var supports = MariaDbServerVersion.LatestSupportedServerVersion.Supports;
+
+            // Supported features:
+            Assert.True(supports.DateTimeCurrentTimestamp);
+            Assert.True(supports.DateTime6);
+            Assert.True(supports.LargerKeyLength);
+            Assert.True(supports.RenameIndex);
+            Assert.True(supports.RenameColumn);
+            Assert.True(supports.WindowFunctions);
+            Assert.True(supports.DoubleCast);
+            Assert.True(supports.Json);
+            Assert.True(supports.GeneratedColumns);
+            Assert.True(supports.DefaultCharSetUtf8Mb4);
+            Assert.True(supports.AlternativeDefaultExpression);
+            Assert.True(supports.SpatialIndexes);
+            Assert.True(supports.SpatialFunctionAdditions);
+            Assert.True(supports.ExceptIntercept);
+            Assert.True(supports.ExceptInterceptPrecedence);
+            Assert.True(supports.JsonDataTypeEmulation);
+            Assert.True(supports.ImplicitBoolCheckUsesIndex);
+            Assert.True(supports.Sequences);
+            Assert.True(supports.InformationSchemaCheckConstraintsTable);
+            Assert.True(supports.IdentifyJsonColumsByCheckConstraints);
+            Assert.True(supports.Returning);
+            Assert.True(supports.CommonTableExpressions);
+            Assert.True(supports.JsonTable);
+            Assert.True(supports.JsonValue);
+            Assert.True(supports.JsonOverlaps);
+            Assert.True(supports.Values);
+            Assert.True(supports.CollationCharacterSetApplicabilityWithFullCollationNameColumn);
+            Assert.True(supports.JsonTableImplementationWithoutMySqlBugs);
+            Assert.True(supports.JsonTableImplementationUsingParameterAsSourceWithoutEngineCrash);
+
+            // Unsupported features (update these assertions when MariaDB adds support):
+            Assert.False(supports.FloatCast);
+            Assert.False(supports.OuterApply);
+            Assert.False(supports.CrossApply);
+            Assert.False(supports.OuterReferenceInMultiLevelSubquery);
+            Assert.False(supports.NullableGeneratedColumns);
+            Assert.False(supports.ParenthesisEnclosedGeneratedColumnExpressions);
+            Assert.False(supports.DefaultExpression);
+            Assert.False(supports.SpatialReferenceSystemRestrictedColumns);
+            Assert.False(supports.SpatialSupportFunctionAdditions);
+            Assert.False(supports.SpatialSetSridFunction);
+            Assert.False(supports.SpatialDistanceFunctionImplementsAndoyer);
+            Assert.False(supports.SpatialDistanceSphereFunction);
+            Assert.False(supports.SpatialGeographic);
+            Assert.False(supports.MySqlBug96947Workaround);
+            Assert.False(supports.MySqlBug104294Workaround);
+            Assert.False(supports.FullTextParser);
+            Assert.False(supports.MySqlBugLimit0Offset0ExistsWorkaround);
+            Assert.False(supports.DescendingIndexes);
+            Assert.False(supports.LimitWithinInAllAnySomeSubquery);
+            Assert.False(supports.LimitWithNonConstantValue);
+            Assert.False(supports.ValuesWithRows);
+            Assert.False(supports.WhereSubqueryReferencesOuterQuery);
+            Assert.False(supports.FieldReferenceInTableValueConstructor);
+            Assert.False(supports.JsonTableImplementationStable);
+            Assert.False(supports.JsonTableImplementationWithoutMariaDbBugs);
+            Assert.False(supports.JsonTableImplementationWithAggregate);
+        }
+    }
+}