shell.execute("cd " + testFolder, 5, TimeUnit.SECONDS);
shell.execute("touch " + file, 5, TimeUnit.SECONDS);
shell.execute("cd ..", 5, TimeUnit.SECONDS);
File fileSource = new File(tmpDir, file);
Files.write(fileSource.toPath(), "TEST".getBytes());
File fileTarget = new File(new File(tmpDir, testFolder), file);
Assert.assertTrue(fileSource.exists());
Assert.assertTrue(fileTarget.exists());
shell.execute("cp " + file + " " + testFolder, 5, TimeUnit.MINUTES);
Assert.assertTrue(fileSource.exists());