fixed switching db test

Author: chernser

clickhouse-client/src/test/java/com/clickhouse/client/ClientIntegrationTest.java

@@ -2511,7 +2511,7 @@ public void testTransactionTimeout() throws ClickHouseException {
 
             tx.begin();
             try {
-                Thread.sleep(3000L);
+                Thread.sleep(4000L);
             } catch (InterruptedException ex) {
                 Assert.fail("Sleep was interrupted", ex);
             }

jdbc-v2/src/test/java/com/clickhouse/jdbc/StatementTest.java

@@ -562,12 +562,13 @@ void testWithClause() throws Exception {
 
     @Test(groups = { "integration" })
     public void testSwitchDatabase() throws Exception {
+        String databaseName = getDatabase() + "_test_switch";
         String createSql = "CREATE TABLE switchDatabaseWithUse (id UInt8, words String) ENGINE = MergeTree ORDER BY ()";
         try (Connection conn = getJdbcConnection()) {
             try (Statement stmt = conn.createStatement()) {
                 assertEquals(stmt.executeUpdate(createSql), 0);
-                assertEquals(stmt.executeUpdate("CREATE DATABASE \"newDatabase\" ENGINE=Atomic"), 0);
-                assertFalse(stmt.execute("USE \"newDatabase\""));
+                assertEquals(stmt.executeUpdate("CREATE DATABASE \"" + databaseName + "\""), 0);
+                assertFalse(stmt.execute("USE \"" + databaseName + "\""));
                 assertEquals(stmt.executeUpdate(createSql), 0);
             }
         }