###############################################################################
#
# Base test class for libxlsxwriter functional tests.
#
# Copyright 2014-2015, John McNamara, jmcnamara@cpan.org
#

import unittest
import os
from helper_functions import _compare_xlsx_files


class XLSXBaseTest(unittest.TestCase):
    """
    Test file created with libxlsxwriter against a file created by Excel.

    """

    def setUp(self):
        self.maxDiff = None

        self.no_system_error = 0
        self.got_filename = ''
        self.exp_filename = ''
        self.ignore_files = []
        self.ignore_elements = {}

    def run_exe_test(self, exe_name, got_filename=None):
        """Run C exe and compare output xlsx file with the Excel file."""

        # Run the C executable to generate the "got" xlsx file.
        got = os.system("cd test/functional/src; ./%s" % exe_name)
        self.assertEqual(got, self.no_system_error)

        # Create the path/file names for the xlsx files to compare.
        exp_filename = exe_name.replace('test_', '') + '.xlsx'

        if not got_filename:
            got_filename = exp_filename

        self.got_filename = 'test/functional/src/test_' + got_filename
        self.exp_filename = 'test/functional/xlsx_files/' + exp_filename

        # Do the comparison between the files.
        got, exp = _compare_xlsx_files(self.got_filename,
                                       self.exp_filename,
                                       self.ignore_files,
                                       self.ignore_elements)
        self.assertEqual(got, exp)

    def tearDown(self):
        # Cleanup.
        if os.path.exists(self.got_filename):
            os.remove(self.got_filename)

        self.ignore_files = []
        self.ignore_elements = {}