HHH-16650 add test

hibernate-core/src/test/java/org/hibernate/orm/test/query/OracleNumericTypesTest.java

@@ -0,0 +1,29 @@
+package org.hibernate.orm.test.query;
+
+import org.hibernate.dialect.OracleDialect;
+import org.hibernate.testing.orm.junit.DomainModel;
+import org.hibernate.testing.orm.junit.JiraKey;
+import org.hibernate.testing.orm.junit.RequiresDialect;
+import org.hibernate.testing.orm.junit.SessionFactory;
+import org.hibernate.testing.orm.junit.SessionFactoryScope;
+import org.junit.jupiter.api.Test;
+
+import java.math.BigDecimal;
+
+import static org.junit.jupiter.api.Assertions.assertInstanceOf;
+
+@SessionFactory
+@DomainModel
+@RequiresDialect(OracleDialect.class)
+@JiraKey("HHH-16650")
+public class OracleNumericTypesTest {
+	@Test void test(SessionFactoryScope scope) {
+		String sql = "SELECT 012345678901234567890123456789, cast(1234567890123.456 as number(30,5)), cast(1234567890123.456 as double precision), cast(1234567890123.456 as float(32)), cast(1234567890123.456 as float(24)) from dual";
+		Object[] values = scope.fromSession( s -> s.createNativeQuery(sql, Object[].class).getSingleResult());
+		assertInstanceOf(BigDecimal.class, values[0]);
+		assertInstanceOf(BigDecimal.class, values[1]);
+		assertInstanceOf(BigDecimal.class, values[2]);
+		assertInstanceOf(Double.class, values[3]);
+		assertInstanceOf(Float.class, values[4]);
+	}
+}