# -*- coding: utf-8 -*-

import datetime as DT

from StringIO import StringIO

from logilab.common.testlib import TestCase, unittest_main

from cubicweb import dataimport

class CreateCopyFromBufferTC(TestCase):

    # test converters

    def test_convert_none(self):

        cnvt = dataimport._copyfrom_buffer_convert_None

        self.assertEqual('NULL', cnvt(None))

    def test_convert_number(self):

        cnvt = dataimport._copyfrom_buffer_convert_number

        self.assertEqual('42', cnvt(42))

        self.assertEqual('42', cnvt(42L))

        self.assertEqual('42.42', cnvt(42.42))

    def test_convert_string(self):

        cnvt = dataimport._copyfrom_buffer_convert_string

        # simple

        self.assertEqual('babar', cnvt('babar'))

        # unicode

        self.assertEqual('\xc3\xa9l\xc3\xa9phant', cnvt(u'éléphant'))

        self.assertEqual('\xe9l\xe9phant', cnvt(u'éléphant', encoding='latin1'))

        self.assertEqual('babar#', cnvt('babar\t', replace_sep='#'))

        self.assertRaises(ValueError, cnvt, 'babar\t')

    def test_convert_date(self):

        cnvt = dataimport._copyfrom_buffer_convert_date

        self.assertEqual('0666-01-13', cnvt(DT.date(666, 1, 13)))

    def test_convert_time(self):

        cnvt = dataimport._copyfrom_buffer_convert_time

        self.assertEqual('06:06:06.000100', cnvt(DT.time(6, 6, 6, 100)))

    def test_convert_datetime(self):

        cnvt = dataimport._copyfrom_buffer_convert_datetime

        self.assertEqual('0666-06-13 06:06:06.000000', cnvt(DT.datetime(666, 6, 13, 6, 6, 6)))

    # test buffer

    def test_create_copyfrom_buffer_tuple(self):

        cnvt = dataimport._create_copyfrom_buffer

        data = ((42, 42L, 42.42, u'éléphant', DT.date(666, 1, 13), DT.time(6, 6, 6), DT.datetime(666, 6, 13, 6, 6, 6)),

                (6, 6L, 6.6, u'babar', DT.date(2014, 1, 14), DT.time(4, 2, 1), DT.datetime(2014, 1, 1, 0, 0, 0)))

        results = dataimport._create_copyfrom_buffer(data)

        # all columns

        expected = '''42\t42\t42.42\téléphant\t0666-01-13\t06:06:06.000000\t0666-06-13 06:06:06.000000

6\t6\t6.6\tbabar\t2014-01-14\t04:02:01.000000\t2014-01-01 00:00:00.000000'''

        self.assertMultiLineEqual(expected, results.getvalue())

        # selected columns

        results = dataimport._create_copyfrom_buffer(data, columns=(1, 3, 6))

        expected = '''42\téléphant\t0666-06-13 06:06:06.000000

6\tbabar\t2014-01-01 00:00:00.000000'''

        self.assertMultiLineEqual(expected, results.getvalue())

    def test_create_copyfrom_buffer_dict(self):

        cnvt = dataimport._create_copyfrom_buffer

        data = (dict(integer=42, double=42.42, text=u'éléphant', date=DT.datetime(666, 6, 13, 6, 6, 6)),

                dict(integer=6, double=6.6, text=u'babar', date=DT.datetime(2014, 1, 1, 0, 0, 0)))

        results = dataimport._create_copyfrom_buffer(data, ('integer', 'text'))

        expected = '''42\téléphant\n6\tbabar'''

        self.assertMultiLineEqual(expected, results.getvalue())

class UcsvreaderTC(TestCase):

    def test_empty_lines_skipped(self):

        stream = StringIO('''a,b,c,d,

1,2,3,4,

,,,,

,,,,

''')

        self.assertEqual([[u'a', u'b', u'c', u'd', u''],

                          [u'1', u'2', u'3', u'4', u''],

                          ],

                         list(dataimport.ucsvreader(stream)))

        stream.seek(0)

        self.assertEqual([[u'a', u'b', u'c', u'd', u''],

                          [u'1', u'2', u'3', u'4', u''],

                          [u'', u'', u'', u'', u''],

                          [u'', u'', u'', u'', u'']

                          ],

                         list(dataimport.ucsvreader(stream, skip_empty=False)))

    def test_skip_first(self):

        stream = StringIO('a,b,c,d,\n'

                          '1,2,3,4,\n')

        reader = dataimport.ucsvreader(stream, skipfirst=True,

                                       ignore_errors=True)

        self.assertEqual(list(reader),

                         [[u'1', u'2', u'3', u'4', u'']])

        stream.seek(0)

        reader = dataimport.ucsvreader(stream, skipfirst=True,

                                       ignore_errors=False)

        self.assertEqual(list(reader),

                         [[u'1', u'2', u'3', u'4', u'']])

        stream.seek(0)

        reader = dataimport.ucsvreader(stream, skipfirst=False,

                                       ignore_errors=True)

        self.assertEqual(list(reader),

                         [[u'a', u'b', u'c', u'd', u''],

                          [u'1', u'2', u'3', u'4', u'']])

        stream.seek(0)

        reader = dataimport.ucsvreader(stream, skipfirst=False,

                                       ignore_errors=False)

        self.assertEqual(list(reader),

                         [[u'a', u'b', u'c', u'd', u''],

                          [u'1', u'2', u'3', u'4', u'']])

if __name__ == '__main__':

    unittest_main()