Merge pull request #1627 from ClickHouse/fix_test_cleanup

Cleanup after Tests!

Author: chernser

clickhouse-jdbc/src/test/java/com/clickhouse/jdbc/ClickHousePreparedStatementTest.java

@@ -1329,6 +1329,7 @@ public void testOutFileAndInFile() throws SQLException {
         if (f.exists()) {
             f.delete();
         }
+        f.deleteOnExit();
         try (ClickHouseConnection conn = newConnection(props); Statement s = conn.createStatement()) {
             s.execute("drop table if exists test_load_infile_with_params;"
                     + "create table test_load_infile_with_params(n Int32, s String) engine=Memory");

clickhouse-jdbc/src/test/java/com/clickhouse/jdbc/ClickHouseStatementTest.java

@@ -174,10 +174,12 @@ public void testOutFileAndInFile() throws SQLException {
         if (f1.exists()) {
             f1.delete();
         }
+        f1.deleteOnExit();
         File f2 = new File("a2.csv");
         if (f2.exists()) {
             f2.delete();
         }
+        f2.deleteOnExit();
 
         try (ClickHouseConnection conn = newConnection(props)) {
             String sql1 = "select number n, toString(n) from numbers(1234) into outfile '" + f1.getName() + "'";