diff --git a/hibernate-community-dialects/src/test/java/org/hibernate/community/dialect/InformixDialectTestCase.java b/hibernate-community-dialects/src/test/java/org/hibernate/community/dialect/InformixDialectTestCase.java
new file mode 100644
index 0000000000..c9d1f8968f
--- /dev/null
+++ b/hibernate-community-dialects/src/test/java/org/hibernate/community/dialect/InformixDialectTestCase.java
@@ -0,0 +1,125 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
+package org.hibernate.community.dialect;
+
+import java.util.Collections;
+
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.engine.query.internal.NativeQueryInterpreterStandardImpl;
+import org.hibernate.metamodel.model.domain.internal.JpaMetamodelImpl;
+import org.hibernate.metamodel.model.domain.internal.MappingMetamodelImpl;
+import org.hibernate.query.criteria.ValueHandlingMode;
+import org.hibernate.query.internal.NamedObjectRepositoryImpl;
+import org.hibernate.query.spi.QueryEngine;
+import org.hibernate.query.sqm.function.SelfRenderingSqmFunction;
+import org.hibernate.query.sqm.function.SqmFunctionDescriptor;
+import org.hibernate.service.ServiceRegistry;
+import org.hibernate.sql.ast.spi.SqlAppender;
+import org.hibernate.sql.ast.spi.StringBuilderSqlAppender;
+import org.hibernate.type.BasicType;
+import org.hibernate.type.descriptor.java.JdbcDateJavaType;
+import org.hibernate.type.descriptor.java.JdbcTimestampJavaType;
+import org.hibernate.type.descriptor.jdbc.DateJdbcType;
+import org.hibernate.type.descriptor.jdbc.TimestampJdbcType;
+import org.hibernate.type.spi.TypeConfiguration;
+
+import org.hibernate.testing.TestForIssue;
+import org.hibernate.testing.junit4.BaseUnitTestCase;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * Testing of patched support for Informix boolean type; see HHH-9894, HHH-10800
+ *
+ * @author Greg Jones
+ */
+public class InformixDialectTestCase extends BaseUnitTestCase {
+
+	private static final InformixDialect dialect = new InformixDialect();
+	private static ServiceRegistry ssr;
+	private static QueryEngine queryEngine;
+
+	@BeforeClass
+	public static void init() {
+		TypeConfiguration typeConfiguration = new TypeConfiguration();
+		final JpaMetamodelImpl jpaMetamodel = new JpaMetamodelImpl( typeConfiguration, new MappingMetamodelImpl( typeConfiguration, ssr ), ssr );
+
+		ssr = new StandardServiceRegistryBuilder().build();
+		queryEngine = new QueryEngine(
+				null,
+				null,
+				jpaMetamodel,
+				ValueHandlingMode.BIND,
+				dialect.getPreferredSqlTypeCodeForBoolean(),
+				false,
+				new NamedObjectRepositoryImpl( Collections.emptyMap(), Collections.emptyMap(), Collections.emptyMap(), Collections.emptyMap() ),
+				NativeQueryInterpreterStandardImpl.NATIVE_QUERY_INTERPRETER,
+				dialect,
+				ssr
+		);
+	}
+
+	@AfterClass
+	public static void tearDown() {
+		queryEngine.close();
+		ssr.close();
+	}
+
+	@Test
+	@TestForIssue(jiraKey = "HHH-9894")
+	public void testToBooleanValueStringTrue() {
+		assertEquals( "'t'", dialect.toBooleanValueString( true ) );
+	}
+
+	@Test
+	@TestForIssue(jiraKey = "HHH-9894")
+	public void testToBooleanValueStringFalse() {
+		assertEquals( "'f'", dialect.toBooleanValueString( false ) );
+	}
+
+	@Test
+	@TestForIssue(jiraKey = "HHH-10800")
+	public void testCurrentTimestampFunction() {
+		SqmFunctionDescriptor functionDescriptor = queryEngine.getSqmFunctionRegistry()
+				.findFunctionDescriptor( "current_timestamp" );
+		SelfRenderingSqmFunction<Object> sqmExpression = functionDescriptor.generateSqmExpression(
+				null,
+				queryEngine,
+				new TypeConfiguration()
+		);
+		BasicType<?> basicType = (BasicType<?>) sqmExpression.getNodeType();
+		assertEquals( JdbcTimestampJavaType.INSTANCE, basicType.getJavaTypeDescriptor() );
+		assertEquals( TimestampJdbcType.INSTANCE, basicType.getJdbcType() );
+
+		SqlAppender appender = new StringBuilderSqlAppender();
+		sqmExpression.getRenderingSupport().render( appender, Collections.emptyList(), null );
+		assertEquals( "current", appender.toString() );
+	}
+
+	@Test
+	@TestForIssue(jiraKey = "HHH-10800")
+	public void testCurrentDateFunction() {
+		SqmFunctionDescriptor functionDescriptor = queryEngine.getSqmFunctionRegistry()
+				.findFunctionDescriptor( "current_date" );
+		SelfRenderingSqmFunction<Object> sqmExpression = functionDescriptor.generateSqmExpression(
+				null,
+				queryEngine,
+				new TypeConfiguration()
+		);
+		BasicType<?> basicType = (BasicType<?>) sqmExpression.getNodeType();
+		assertEquals( JdbcDateJavaType.INSTANCE, basicType.getJavaTypeDescriptor() );
+		assertEquals( DateJdbcType.INSTANCE, basicType.getJdbcType() );
+
+		SqlAppender appender = new StringBuilderSqlAppender();
+		sqmExpression.getRenderingSupport().render( appender, Collections.emptyList(), null );
+		assertEquals( "today", appender.toString() );
+	}
+
+}