Drop H2 schema before JDBC tests

https://build.spring.io/browse/INT-MJATS41-1679/

spring-integration-jdbc/src/test/java/org/springframework/integration/jdbc/JdbcMessageStoreChannelTests-context.xml

@@ -11,6 +11,7 @@
 		http://www.springframework.org/schema/integration/jdbc https://www.springframework.org/schema/integration/jdbc/spring-integration-jdbc.xsd">
 
 	<jdbc:embedded-database id="dataSource" type="H2">
+		<jdbc:script location="org/springframework/integration/jdbc/schema-drop-h2.sql"/>
 		<jdbc:script location="org/springframework/integration/jdbc/schema-h2.sql"/>
 	</jdbc:embedded-database>
 

spring-integration-jdbc/src/test/java/org/springframework/integration/jdbc/JdbcMessageStoreRegionTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -18,8 +18,6 @@
 
 import static org.junit.Assert.assertEquals;
 
-import java.sql.ResultSet;
-import java.sql.SQLException;
 import java.util.List;
 
 import org.junit.After;
@@ -28,28 +26,32 @@
 import org.junit.Before;
 import org.junit.BeforeClass;
 import org.junit.Test;
+
 import org.springframework.integration.support.MessageBuilder;
 import org.springframework.jdbc.core.JdbcTemplate;
-import org.springframework.jdbc.core.RowMapper;
 import org.springframework.jdbc.datasource.embedded.EmbeddedDatabase;
 import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseBuilder;
 import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType;
 
 /**
  * @author Gunnar Hillert
+ * @author Artem Bilan
  */
 public class JdbcMessageStoreRegionTests {
 
 	private static EmbeddedDatabase dataSource;
+
 	private JdbcTemplate jdbcTemplate;
 
 	private JdbcMessageStore messageStore1;
+
 	private JdbcMessageStore messageStore2;
 
 	@BeforeClass
 	public static void setupDatabase() {
 		dataSource = new EmbeddedDatabaseBuilder()
 				.setType(EmbeddedDatabaseType.H2)
+				.addScript("classpath:/org/springframework/integration/jdbc/schema-drop-h2.sql")
 				.addScript("classpath:/org/springframework/integration/jdbc/schema-h2.sql")
 				.build();
 	}
@@ -77,7 +79,7 @@ public void afterTest() {
 	}
 
 	@Test
-	public void testVerifyMessageCount() throws Exception {
+	public void testVerifyMessageCount() {
 
 		messageStore1.addMessage(MessageBuilder.withPayload("payload1").build());
 		messageStore1.addMessage(MessageBuilder.withPayload("payload2").build());
@@ -91,7 +93,7 @@ public void testVerifyMessageCount() throws Exception {
 	}
 
 	@Test
-	public void testInsertNullRegion() throws Exception {
+	public void testInsertNullRegion() {
 
 		try {
 			messageStore1.setRegion(null);
@@ -105,7 +107,7 @@ public void testInsertNullRegion() throws Exception {
 	}
 
 	@Test
-	public void testVerifyMessageGroupCount() throws Exception {
+	public void testVerifyMessageGroupCount() {
 
 		messageStore1.addMessageToGroup("group1", MessageBuilder.withPayload("payload1").build());
 		messageStore1.addMessageToGroup("group2", MessageBuilder.withPayload("payload2").build());
@@ -124,38 +126,28 @@ public void testVerifyMessageGroupCount() throws Exception {
 	}
 
 	@Test
-	public void testRegionSetToMessageGroup() throws Exception {
+	public void testRegionSetToMessageGroup() {
 
 		messageStore1.addMessageToGroup("group1", MessageBuilder.withPayload("payload1").build());
 
-		List<String> regions = jdbcTemplate.query("Select * from INT_MESSAGE_GROUP where REGION = 'region1'", new RowMapper<String>() {
-
-			public String mapRow(ResultSet rs, int rowNum) throws SQLException {
-				return rs.getString("REGION");
-			}
-
-		});
+		List<String> regions = jdbcTemplate.query("Select * from INT_MESSAGE_GROUP where REGION = 'region1'",
+				(rs, rowNum) -> rs.getString("REGION"));
 
 		assertEquals(1, regions.size());
 		assertEquals("region1", regions.get(0));
 
 		messageStore2.addMessageToGroup("group1", MessageBuilder.withPayload("payload1").build());
 
-		List<String> regions2 = jdbcTemplate.query("Select * from INT_MESSAGE_GROUP where REGION = 'region2'", new RowMapper<String>() {
-
-			public String mapRow(ResultSet rs, int rowNum) throws SQLException {
-				return rs.getString("REGION");
-			}
-
-		});
+		List<String> regions2 = jdbcTemplate.query("Select * from INT_MESSAGE_GROUP where REGION = 'region2'",
+				(rs, rowNum) -> rs.getString("REGION"));
 
 		assertEquals(1, regions2.size());
 		assertEquals("region2", regions2.get(0));
 
 	}
 
 	@Test
-	public void testRemoveMessageGroup() throws Exception {
+	public void testRemoveMessageGroup() {
 
 		messageStore1.addMessageToGroup("group1", MessageBuilder.withPayload("payload1").build());
 		messageStore1.addMessageToGroup("group2", MessageBuilder.withPayload("payload2").build());
@@ -169,4 +161,5 @@ public void testRemoveMessageGroup() throws Exception {
 		assertEquals(2, messageStore2.getMessageGroupCount());
 
 	}
+
 }

spring-integration-jdbc/src/test/java/org/springframework/integration/jdbc/leader/JdbcLockRegistryLeaderInitiatorTests.java

@@ -53,6 +53,7 @@ public class JdbcLockRegistryLeaderInitiatorTests {
 	public static void init() {
 		dataSource = new EmbeddedDatabaseBuilder()
 				.setType(EmbeddedDatabaseType.H2)
+				.addScript("classpath:/org/springframework/integration/jdbc/schema-drop-h2.sql")
 				.addScript("classpath:/org/springframework/integration/jdbc/schema-h2.sql")
 				.build();
 	}
@@ -66,7 +67,7 @@ public static void destroy() {
 	public void testDistributedLeaderElection() throws Exception {
 		CountDownLatch granted = new CountDownLatch(1);
 		CountingPublisher countingPublisher = new CountingPublisher(granted);
-		List<LockRegistryLeaderInitiator> initiators = new ArrayList<LockRegistryLeaderInitiator>();
+		List<LockRegistryLeaderInitiator> initiators = new ArrayList<>();
 		for (int i = 0; i < 2; i++) {
 			DefaultLockRepository lockRepository = new DefaultLockRepository(dataSource);
 			lockRepository.afterPropertiesSet();