Disable tests for Db2

A lot of tests fail with the usual error:

```
java.lang.IllegalStateException: Needed to have 6 in buffer but only had 0
```

This is a known issue with the Vert.x driver.
See #1345

Author: DavideD

hibernate-reactive-core/src/test/java/org/hibernate/reactive/FilterWithPaginationTest.java

@@ -15,10 +15,12 @@
 import org.hibernate.annotations.ParamDef;
 import org.hibernate.reactive.mutiny.Mutiny;
 import org.hibernate.reactive.stage.Stage;
+import org.hibernate.reactive.testing.DBSelectionExtension;
 import org.hibernate.type.descriptor.java.StringJavaType;
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
 
 import io.smallrye.mutiny.Uni;
 import io.vertx.junit5.Timeout;
@@ -33,6 +35,8 @@
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.hibernate.query.Page.first;
 import static org.hibernate.query.Page.page;
+import static org.hibernate.reactive.containers.DatabaseConfiguration.DBType.DB2;
+import static org.hibernate.reactive.testing.DBSelectionExtension.skipTestsFor;
 
 /**
  * Test the combination of filters, max results, first result, and {@link org.hibernate.query.Page}.
@@ -41,6 +45,10 @@
 
 public class FilterWithPaginationTest extends BaseReactiveTest {
 
+	// Db2: Exception: IllegalStateException: Needed to have 6 in buffer but only had 0
+	@RegisterExtension
+	public final DBSelectionExtension skip = skipTestsFor( DB2 );
+
 	FamousPerson margaret = new FamousPerson( 1L, "Margaret Howe Lovatt", Status.LIVING, "the woman who lived in a half-flooded home with a dolphin." );
 	FamousPerson nellie = new FamousPerson( 2L, "Nellie Bly", Status.DECEASED, "In 1888, she traveled around the world in 72 days." );
 	FamousPerson hedy = new FamousPerson( 3L, "Hedy Lamarr", Status.DECEASED, "Actress and co-inventor of an early version of frequency-hopping spread spectrum communication for torpedo guidance." );

hibernate-reactive-core/src/test/java/org/hibernate/reactive/LazyReplaceOrphanedEntityTest.java

@@ -11,8 +11,11 @@
 import java.util.List;
 import java.util.UUID;
 
+import org.hibernate.reactive.testing.DBSelectionExtension;
+
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
 
 import io.vertx.junit5.Timeout;
 import io.vertx.junit5.VertxTestContext;
@@ -32,11 +35,16 @@
 
 import static java.util.concurrent.TimeUnit.MINUTES;
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.hibernate.reactive.containers.DatabaseConfiguration.DBType.DB2;
 
 @Timeout(value = 10, timeUnit = MINUTES)
 
 public class LazyReplaceOrphanedEntityTest extends BaseReactiveTest {
 
+	// Db2: Exception: IllegalStateException: Needed to have 6 in buffer but only had 0
+	@RegisterExtension
+	public final DBSelectionExtension skip = DBSelectionExtension.skipTestsFor( DB2 );
+
 	private Campaign theCampaign;
 
 	@Override

hibernate-reactive-core/src/test/java/org/hibernate/reactive/timezones/AutoZonedTest.java

@@ -13,6 +13,7 @@
 
 import org.hibernate.cfg.Configuration;
 import org.hibernate.reactive.BaseReactiveTest;
+import org.hibernate.reactive.testing.DBSelectionExtension;
 
 import java.time.OffsetDateTime;
 import java.time.ZoneId;
@@ -22,17 +23,23 @@
 import java.util.List;
 
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
 
 import static java.util.concurrent.TimeUnit.MINUTES;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.hibernate.cfg.AvailableSettings.TIMEZONE_DEFAULT_STORAGE;
+import static org.hibernate.reactive.containers.DatabaseConfiguration.DBType.DB2;
 import static org.hibernate.reactive.testing.ReactiveAssertions.assertWithTruncationThat;
 import static org.hibernate.type.descriptor.DateTimeUtils.roundToDefaultPrecision;
 
 @Timeout(value = 10, timeUnit = MINUTES)
 
 public class AutoZonedTest extends BaseReactiveTest {
 
+	// Db2: Exception: IllegalStateException: Needed to have 6 in buffer but only had 0
+	@RegisterExtension
+	public final DBSelectionExtension skip = DBSelectionExtension.skipTestsFor( DB2 );
+
 	@Override
 	protected Collection<Class<?>> annotatedEntities() {
 		return List.of( Zoned.class );

hibernate-reactive-core/src/test/java/org/hibernate/reactive/timezones/ColumnZonedTest.java

@@ -13,6 +13,7 @@
 
 import org.hibernate.cfg.Configuration;
 import org.hibernate.reactive.BaseReactiveTest;
+import org.hibernate.reactive.testing.DBSelectionExtension;
 
 import java.time.OffsetDateTime;
 import java.time.ZoneId;
@@ -22,17 +23,23 @@
 import java.util.List;
 
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
 
 import static java.util.concurrent.TimeUnit.MINUTES;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.hibernate.cfg.AvailableSettings.TIMEZONE_DEFAULT_STORAGE;
+import static org.hibernate.reactive.containers.DatabaseConfiguration.DBType.DB2;
 import static org.hibernate.reactive.testing.ReactiveAssertions.assertWithTruncationThat;
 import static org.hibernate.type.descriptor.DateTimeUtils.roundToDefaultPrecision;
 
 @Timeout(value = 10, timeUnit = MINUTES)
 
 public class ColumnZonedTest extends BaseReactiveTest {
 
+	// Db2: Exception: IllegalStateException: Needed to have 6 in buffer but only had 0
+	@RegisterExtension
+	public final DBSelectionExtension skip = DBSelectionExtension.skipTestsFor( DB2 );
+
 	@Override
 	protected Collection<Class<?>> annotatedEntities() {
 		return List.of( Zoned.class );

hibernate-reactive-core/src/test/java/org/hibernate/reactive/timezones/DefaultZonedTest.java

@@ -13,6 +13,7 @@
 
 import org.hibernate.dialect.TimeZoneSupport;
 import org.hibernate.reactive.BaseReactiveTest;
+import org.hibernate.reactive.testing.DBSelectionExtension;
 
 import java.time.OffsetDateTime;
 import java.time.ZoneId;
@@ -22,16 +23,22 @@
 import java.util.List;
 
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
 
 import static java.util.concurrent.TimeUnit.MINUTES;
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.hibernate.reactive.containers.DatabaseConfiguration.DBType.DB2;
 import static org.hibernate.reactive.testing.ReactiveAssertions.assertWithTruncationThat;
 import static org.hibernate.type.descriptor.DateTimeUtils.roundToDefaultPrecision;
 
 @Timeout(value = 10, timeUnit = MINUTES)
 
 public class DefaultZonedTest extends BaseReactiveTest {
 
+	// Db2: Exception: IllegalStateException: Needed to have 6 in buffer but only had 0
+	@RegisterExtension
+	public final DBSelectionExtension skip = DBSelectionExtension.skipTestsFor( DB2 );
+
 	@Override
 	protected Collection<Class<?>> annotatedEntities() {
 		return List.of( Zoned.class );

hibernate-reactive-core/src/test/java/org/hibernate/reactive/timezones/JDBCTimeZoneZonedTest.java

@@ -15,8 +15,10 @@
 
 import org.hibernate.cfg.Configuration;
 import org.hibernate.reactive.BaseReactiveTest;
+import org.hibernate.reactive.testing.DBSelectionExtension;
 
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
 
 import io.vertx.junit5.Timeout;
 import io.vertx.junit5.VertxTestContext;
@@ -28,12 +30,18 @@
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.hibernate.cfg.AvailableSettings.JDBC_TIME_ZONE;
 import static org.hibernate.cfg.AvailableSettings.TIMEZONE_DEFAULT_STORAGE;
+import static org.hibernate.reactive.containers.DatabaseConfiguration.DBType.DB2;
 import static org.hibernate.reactive.testing.ReactiveAssertions.assertWithTruncationThat;
 import static org.hibernate.type.descriptor.DateTimeUtils.roundToDefaultPrecision;
 
 @Timeout(value = 10, timeUnit = MINUTES)
 
 public class JDBCTimeZoneZonedTest extends BaseReactiveTest {
+
+	// Db2: Exception: IllegalStateException: Needed to have 6 in buffer but only had 0
+	@RegisterExtension
+	public final DBSelectionExtension skip = DBSelectionExtension.skipTestsFor( DB2 );
+
 	@Override
 	protected Collection<Class<?>> annotatedEntities() {
 		return List.of( Zoned.class );

hibernate-reactive-core/src/test/java/org/hibernate/reactive/timezones/PassThruZonedTest.java

@@ -5,15 +5,6 @@
  */
 package org.hibernate.reactive.timezones;
 
-import io.vertx.junit5.Timeout;
-import io.vertx.junit5.VertxTestContext;
-import jakarta.persistence.Entity;
-import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.Id;
-
-import org.hibernate.cfg.Configuration;
-import org.hibernate.reactive.BaseReactiveTest;
-
 import java.time.Instant;
 import java.time.OffsetDateTime;
 import java.time.ZoneId;
@@ -22,17 +13,34 @@
 import java.util.Collection;
 import java.util.List;
 
+import org.hibernate.cfg.Configuration;
+import org.hibernate.reactive.BaseReactiveTest;
+import org.hibernate.reactive.testing.DBSelectionExtension;
+
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import io.vertx.junit5.Timeout;
+import io.vertx.junit5.VertxTestContext;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
 
 import static java.util.concurrent.TimeUnit.MINUTES;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.hibernate.cfg.AvailableSettings.TIMEZONE_DEFAULT_STORAGE;
+import static org.hibernate.reactive.containers.DatabaseConfiguration.DBType.DB2;
 import static org.hibernate.reactive.testing.ReactiveAssertions.assertWithTruncationThat;
 import static org.hibernate.type.descriptor.DateTimeUtils.roundToDefaultPrecision;
 
 @Timeout(value = 10, timeUnit = MINUTES)
 
 public class PassThruZonedTest extends BaseReactiveTest {
+
+	// Db2: Exception: IllegalStateException: Needed to have 6 in buffer but only had 0
+	@RegisterExtension
+	public final DBSelectionExtension skip = DBSelectionExtension.skipTestsFor( DB2 );
+
 	@Override
 	protected Collection<Class<?>> annotatedEntities() {
 		return List.of( Zoned.class );

hibernate-reactive-core/src/test/java/org/hibernate/reactive/timezones/UTCNormalizedInstantTest.java

@@ -12,8 +12,10 @@
 
 import org.hibernate.annotations.JdbcTypeCode;
 import org.hibernate.reactive.BaseReactiveTest;
+import org.hibernate.reactive.testing.DBSelectionExtension;
 
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
 
 import io.vertx.junit5.Timeout;
 import io.vertx.junit5.VertxTestContext;
@@ -23,12 +25,17 @@
 
 import static java.sql.Types.TIMESTAMP;
 import static java.util.concurrent.TimeUnit.MINUTES;
+import static org.hibernate.reactive.containers.DatabaseConfiguration.DBType.DB2;
 import static org.hibernate.reactive.testing.ReactiveAssertions.assertWithTruncationThat;
 
 @Timeout(value = 10, timeUnit = MINUTES)
 
 public class UTCNormalizedInstantTest extends BaseReactiveTest {
 
+	// Db2: Exception: IllegalStateException: Needed to have 6 in buffer but only had 0
+	@RegisterExtension
+	public final DBSelectionExtension skip = DBSelectionExtension.skipTestsFor( DB2 );
+
 	@Override
 	protected Collection<Class<?>> annotatedEntities() {
 		return List.of( Zoned.class );

hibernate-reactive-core/src/test/java/org/hibernate/reactive/timezones/UTCNormalizedZonedTest.java

@@ -14,8 +14,10 @@
 
 import org.hibernate.cfg.Configuration;
 import org.hibernate.reactive.BaseReactiveTest;
+import org.hibernate.reactive.testing.DBSelectionExtension;
 
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
 
 import io.vertx.junit5.Timeout;
 import io.vertx.junit5.VertxTestContext;
@@ -26,13 +28,18 @@
 import static java.util.concurrent.TimeUnit.MINUTES;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.hibernate.cfg.AvailableSettings.TIMEZONE_DEFAULT_STORAGE;
+import static org.hibernate.reactive.containers.DatabaseConfiguration.DBType.DB2;
 import static org.hibernate.reactive.testing.ReactiveAssertions.assertWithTruncationThat;
 import static org.hibernate.type.descriptor.DateTimeUtils.roundToDefaultPrecision;
 
 @Timeout(value = 10, timeUnit = MINUTES)
 
 public class UTCNormalizedZonedTest extends BaseReactiveTest {
 
+	// Db2: Exception: IllegalStateException: Needed to have 6 in buffer but only had 0
+	@RegisterExtension
+	public final DBSelectionExtension skip = DBSelectionExtension.skipTestsFor( DB2 );
+
 	@Override
 	protected Collection<Class<?>> annotatedEntities() {
 		return List.of( Zoned.class );