Add Oracle integration tests

spring-session-jdbc/spring-session-jdbc.gradle

@@ -22,5 +22,6 @@ dependencies {
 	integrationTestCompile "org.testcontainers:mariadb"
 	integrationTestCompile "org.testcontainers:mssqlserver"
 	integrationTestCompile "org.testcontainers:mysql"
+	integrationTestCompile "org.testcontainers:oracle-xe"
 	integrationTestCompile "org.testcontainers:postgresql"
 }

spring-session-jdbc/src/integration-test/java/org/springframework/session/jdbc/DatabaseContainers.java

@@ -20,6 +20,7 @@ import org.testcontainers.containers.JdbcDatabaseContainer;
 import org.testcontainers.containers.MSSQLServerContainer;
 import org.testcontainers.containers.MariaDBContainer;
 import org.testcontainers.containers.MySQLContainer;
+import org.testcontainers.containers.OracleContainer;
 import org.testcontainers.containers.PostgreSQLContainer;
 
 /**
@@ -48,6 +49,10 @@ final class DatabaseContainers {
 		return new MySql8Container();
 	}
 
+	static OracleContainer oracle() {
+		return new OracleContainer();
+	}
+
 	static PostgreSQLContainer postgreSql9() {
 		return new PostgreSql9Container();
 	}

spring-session-jdbc/src/integration-test/java/org/springframework/session/jdbc/DatabasePopulators.java

@@ -35,6 +35,11 @@ final class DatabasePopulators {
 				"org/springframework/session/jdbc/schema-mysql.sql"));
 	}
 
+	static ResourceDatabasePopulator oracle() {
+		return new ResourceDatabasePopulator(new ClassPathResource(
+				"org/springframework/session/jdbc/schema-oracle.sql"));
+	}
+
 	static ResourceDatabasePopulator postgreSql() {
 		return new ResourceDatabasePopulator(new ClassPathResource(
 				"org/springframework/session/jdbc/schema-postgresql.sql"));

spring-session-jdbc/src/integration-test/java/org/springframework/session/jdbc/OracleJdbcOperationsSessionRepositoryITests.java

@@ -0,0 +1,73 @@
+/*
+ * Copyright 2014-2018 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.session.jdbc;
+
+import org.junit.Assume;
+import org.junit.BeforeClass;
+import org.junit.runner.RunWith;
+import org.testcontainers.containers.OracleContainer;
+import org.testcontainers.utility.TestcontainersConfiguration;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.jdbc.datasource.init.ResourceDatabasePopulator;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+import org.springframework.util.ClassUtils;
+
+/**
+ * Integration tests for {@link JdbcOperationsSessionRepository} using Oracle database.
+ * <p>
+ * This test is conditional on presence of Oracle JDBC driver on the classpath and
+ * Testcontainers property {@code oracle.container.image} being set.
+ *
+ * @author Vedran Pavic
+ */
+@RunWith(SpringRunner.class)
+@WebAppConfiguration
+@ContextConfiguration
+public class OracleJdbcOperationsSessionRepositoryITests
+		extends AbstractContainerJdbcOperationsSessionRepositoryITests {
+
+	@BeforeClass
+	public static void setUpClass() {
+		Assume.assumeTrue("Oracle JDBC driver is present on the classpath",
+				ClassUtils.isPresent("oracle.jdbc.OracleDriver", null));
+		Assume.assumeTrue("Testcontainers property `oracle.container.image` is set",
+				TestcontainersConfiguration.getInstance().getProperties()
+						.getProperty("oracle.container.image") != null);
+	}
+
+	@Configuration
+	static class Config extends BaseContainerConfig {
+
+		@Bean
+		public OracleContainer databaseContainer() {
+			OracleContainer databaseContainer = DatabaseContainers.oracle();
+			databaseContainer.start();
+			return databaseContainer;
+		}
+
+		@Bean
+		public ResourceDatabasePopulator databasePopulator() {
+			return DatabasePopulators.oracle();
+		}
+
+	}
+
+}