from Products.CMFDiffTool.TextDiff import AsTextDiff
from datetime import date
from Products.CMFDiffTool.interfaces import IDifference

import unittest2 as unittest


class DateDummyType(object):
    def __init__(self, date):
        self.date = date


class BoolDummyType(object):
    def __init__(self, bool_field):
        self.bool_field = bool_field


class AsTextDiffTestCase(unittest.TestCase):

    def test_should_diff_anything_as_text(self):
        self._test_diff_date(date(2011, 1, 1), date(2012, 2, 2), False)
        self._test_diff_date(date(2011, 1, 1), date(2011, 1, 1), True)
        self._test_diff_date(date(2011, 1, 1), None, False)
        self._test_diff_date(None, None, True)

    def _test_diff_date(self, d1, d2, same):
        diff = AsTextDiff(DateDummyType(d1), DateDummyType(d2), 'date')
        self.assertTrue(IDifference.providedBy(diff))
        self.assertEqual(diff.same, same)

        inline_diff = diff.inline_diff()
        if same:
            self.assertFalse(inline_diff)
        else:
            self.assertTrue(inline_diff)
            if d1 is not None:
                self.assertTrue(str(d1) in inline_diff)
            if d2 is not None:
                self.assertTrue(str(d2) in inline_diff)

            #self.assertFalse('None' in inline_diff)

    def test_should_diff_boolean_fields(self):
        self._test_diff_bool(False, False, True)
        self._test_diff_bool(False, True, False)
        self._test_diff_bool(True, False, False)
        self._test_diff_bool(True, True, True)
        self._test_diff_bool(False, None, False)
        self._test_diff_bool(True, None, False)
        self._test_diff_bool(None, False, False)
        self._test_diff_bool(None, True, False)
        self._test_diff_bool(None, None, True)

    def _test_diff_bool(self, b1, b2, same):
        diff = AsTextDiff(BoolDummyType(b1), BoolDummyType(b2), 'bool_field')

        self.assertTrue(IDifference.providedBy(diff))
        self.assertEqual(diff.same, same)

        inline_diff = diff.inline_diff()
        if same:
            self.assertFalse(inline_diff)
        else:
            self.assertTrue(
                ('True' in inline_diff) or ('False' in inline_diff))
            #self.assertFalse('None' in inline_diff)