def METHOD_NAME(self):
    self.stop_node(0)
    self.test_config_file_parser()
    # Remove the -datadir argument so it doesn't override the config file
    self.nodes[0].args = [arg for arg in self.nodes[0].args if not arg.startswith("-datadir")]
    default_data_dir = self.nodes[0].datadir
    new_data_dir = os.path.join(default_data_dir, 'newdatadir')
    new_data_dir_2 = os.path.join(default_data_dir, 'newdatadir2')
    # Check that using -datadir argument on non-existent directory fails
    self.nodes[0].datadir = new_data_dir
    self.nodes[0].assert_start_raises_init_error(['-datadir=' + new_data_dir], 'Error: Specified data directory "' + new_data_dir + '" does not exist.')
    # Check that using non-existent datadir in conf file fails
    conf_file = os.path.join(default_data_dir, "munt.conf")
    # datadir needs to be set before [regtest] section
    conf_file_contents = open(conf_file, encoding='utf8').read()
    with open(conf_file, 'w', encoding='utf8') as f:
        f.write("datadir=" + new_data_dir + "\n")
        f.write(conf_file_contents)
    # Temporarily disabled, because this test would access the user's home dir (~/.munt)
    #self.nodes[0].assert_start_raises_init_error(['-conf=' + conf_file], 'Error reading configuration file: specified data directory "' + new_data_dir + '" does not exist.')
    # Create the directory and ensure the config file now works
    os.mkdir(new_data_dir)
    # Temporarily disabled, because this test would access the user's home dir (~/.munt)
    #self.start_node(0, ['-conf='+conf_file, '-wallet=w1'])
    #self.stop_node(0)
    #assert os.path.exists(os.path.join(new_data_dir, 'regtest', 'blocks'))
    #if self.is_wallet_compiled():
    #assert os.path.exists(os.path.join(new_data_dir, 'regtest', 'wallets', 'w1'))
    # Ensure command line argument overrides datadir in conf
    os.mkdir(new_data_dir_2)
    self.nodes[0].datadir = new_data_dir_2
    self.start_node(0, ['-datadir='+new_data_dir_2, '-conf='+conf_file, '-wallet=w2'])
    assert os.path.exists(os.path.join(new_data_dir_2, 'regtest', 'blocks'))
    if self.is_wallet_compiled():
        assert os.path.exists(os.path.join(new_data_dir_2, 'regtest', 'wallets', 'w2'))