Add JdbcOperationsSessionRepository overflow test

Add test for ensuring
JdbcOperationsSessionRepository.cleanupExpiredSessions does not have an
overflow when setting the max inactive interval to large values.

Issue gh-564

spring-session/src/test/java/org/springframework/session/jdbc/JdbcOperationsSessionRepositoryTests.java

@@ -22,6 +22,7 @@ import java.util.Map;
 
 import javax.sql.DataSource;
 
+import org.assertj.core.data.Offset;
 import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
@@ -351,6 +352,22 @@ public class JdbcOperationsSessionRepositoryTests {
 		verify(this.jdbcOperations, times(1)).update(startsWith("DELETE"), anyLong());
 	}
 
+	// gh-564
+	@Test
+	public void cleanupExpiredSessionsNoOverflow() {
+		long now = System.currentTimeMillis();
+		long toDelete = now - (new Long(Integer.MAX_VALUE) * 1000L);
+		this.repository.setDefaultMaxInactiveInterval(Integer.MAX_VALUE);
+
+		this.repository.cleanUpExpiredSessions();
+
+		ArgumentCaptor<Long> time = ArgumentCaptor.forClass(Long.class);
+		assertPropagationRequiresNew();
+		verify(this.jdbcOperations, times(1)).update(startsWith("DELETE"),
+				time.capture());
+		assertThat(time.getValue()).isCloseTo(toDelete, Offset.offset(5L));
+	}
+
 	private void assertPropagationRequiresNew() {
 		ArgumentCaptor<TransactionDefinition> argument =
 				ArgumentCaptor.forClass(TransactionDefinition.class);