test_tablib.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""Tests for Tablib."""
from __future__ import unicode_literals

import datetime
import doctest
import json
import sys
import unittest
from uuid import uuid4

import tablib
from tablib.compat import markup, unicode, is_py3
from tablib.core import Row
from tablib.formats import csv as csv_format


class TablibTestCase(unittest.TestCase):
    """Tablib test cases."""

    def setUp(self):
        """Create simple data set with headers."""

        global data, book

        data = tablib.Dataset()
        book = tablib.Databook()

        self.headers = ('first_name', 'last_name', 'gpa')
        self.john = ('John', 'Adams', 90)
        self.george = ('George', 'Washington', 67)
        self.tom = ('Thomas', 'Jefferson', 50)

        self.founders = tablib.Dataset(headers=self.headers, title='Founders')
        self.founders.append(self.john)
        self.founders.append(self.george)
        self.founders.append(self.tom)

    def tearDown(self):
        """Teardown."""
        pass

    def test_empty_append(self):
        """Verify append() correctly adds tuple with no headers."""
        new_row = (1, 2, 3)
        data.append(new_row)

        # Verify width/data
        self.assertTrue(data.width == len(new_row))
        self.assertTrue(data[0] == new_row)

    def test_empty_append_with_headers(self):
        """Verify append() correctly detects mismatch of number of
        headers and data.
        """
        data.headers = ['first', 'second']
        new_row = (1, 2, 3, 4)

        self.assertRaises(tablib.InvalidDimensions, data.append, new_row)

    def test_set_headers_with_incorrect_dimension(self):
        """Verify headers correctly detects mismatch of number of
        headers and data.
        """

        data.append(self.john)

        def set_header_callable():
            data.headers = ['first_name']

        self.assertRaises(tablib.InvalidDimensions, set_header_callable)

    def test_add_column(self):
        """Verify adding column works with/without headers."""

        data.append(['kenneth'])
        data.append(['bessie'])

        new_col = ['reitz', 'monke']

        data.append_col(new_col)

        self.assertEqual(data[0], ('kenneth', 'reitz'))
        self.assertEqual(data.width, 2)

        # With Headers
        data.headers = ('fname', 'lname')
        new_col = [21, 22]
        data.append_col(new_col, header='age')

        self.assertEqual(data['age'], new_col)

    def test_add_column_no_data_no_headers(self):
        """Verify adding new column with no headers."""

        new_col = ('reitz', 'monke')

        data.append_col(new_col)

        self.assertEqual(data[0], tuple([new_col[0]]))
        self.assertEqual(data.width, 1)
        self.assertEqual(data.height, len(new_col))

    def test_add_column_with_header_ignored(self):
        """Verify append_col() ignores the header if data.headers has
        not previously been set
        """

        new_col = ('reitz', 'monke')

        data.append_col(new_col, header='first_name')

        self.assertEqual(data[0], tuple([new_col[0]]))
        self.assertEqual(data.width, 1)
        self.assertEqual(data.height, len(new_col))
        self.assertEqual(data.headers, None)

    def test_add_column_with_header_and_headers_only_exist(self):
        """Verify append_col() with header correctly detects mismatch when
        headers exist but there is no existing row data
        """

        data.headers = ['first_name']
        # no data

        new_col = ('allen')

        def append_col_callable():
            data.append_col(new_col, header='middle_name')

        self.assertRaises(tablib.InvalidDimensions, append_col_callable)

    def test_add_column_with_header_and_data_exists(self):
        """Verify append_col() works when headers and rows exists"""

        data.headers = self.headers
        data.append(self.john)

        new_col = [10];

        data.append_col(new_col, header='age')

        self.assertEqual(data.height, 1)
        self.assertEqual(data.width, len(self.john) + 1)
        self.assertEqual(data['age'], new_col)
        self.assertEqual(len(data.headers), len(self.headers) + 1)

    def test_add_callable_column(self):
        """Verify adding column with values specified as callable."""

        new_col = lambda x: x[0]

        self.founders.append_col(new_col, header='first_again')

    def test_header_slicing(self):
        """Verify slicing by headers."""

        self.assertEqual(self.founders['first_name'],
                         [self.john[0], self.george[0], self.tom[0]])

        self.assertEqual(self.founders['last_name'],
                         [self.john[1], self.george[1], self.tom[1]])

        self.assertEqual(self.founders['gpa'],
                         [self.john[2], self.george[2], self.tom[2]])

    def test_get_col(self):
        """Verify getting columns by index"""

        self.assertEqual(
            self.founders.get_col(list(self.headers).index('first_name')),
            [self.john[0], self.george[0], self.tom[0]])

        self.assertEqual(
            self.founders.get_col(list(self.headers).index('last_name')),
            [self.john[1], self.george[1], self.tom[1]])

        self.assertEqual(
            self.founders.get_col(list(self.headers).index('gpa')),
            [self.john[2], self.george[2], self.tom[2]])

    def test_data_slicing(self):
        """Verify slicing by data."""

        # Slice individual rows
        self.assertEqual(self.founders[0], self.john)
        self.assertEqual(self.founders[:1], [self.john])
        self.assertEqual(self.founders[1:2], [self.george])
        self.assertEqual(self.founders[-1], self.tom)
        self.assertEqual(self.founders[3:], [])

        # Slice multiple rows
        self.assertEqual(self.founders[:], [self.john, self.george, self.tom])
        self.assertEqual(self.founders[0:2], [self.john, self.george])
        self.assertEqual(self.founders[1:3], [self.george, self.tom])
        self.assertEqual(self.founders[2:], [self.tom])

    def test_row_slicing(self):
        """Verify Row's __getslice__ method. Issue #184."""

        john = Row(self.john)

        self.assertEqual(john[:], list(self.john[:]))
        self.assertEqual(john[0:], list(self.john[0:]))
        self.assertEqual(john[:2], list(self.john[:2]))
        self.assertEqual(john[0:2], list(self.john[0:2]))
        self.assertEqual(john[0:-1], list(self.john[0:-1]))

    def test_delete(self):
        """Verify deleting from dataset works."""

        # Delete from front of object
        del self.founders[0]
        self.assertEqual(self.founders[:], [self.george, self.tom])

        # Verify dimensions, width should NOT change
        self.assertEqual(self.founders.height, 2)
        self.assertEqual(self.founders.width, 3)

        # Delete from back of object
        del self.founders[1]
        self.assertEqual(self.founders[:], [self.george])

        # Verify dimensions, width should NOT change
        self.assertEqual(self.founders.height, 1)
        self.assertEqual(self.founders.width, 3)

        # Delete from invalid index
        self.assertRaises(IndexError, self.founders.__delitem__, 3)

    def test_json_export(self):
        """Verify exporting dataset object as JSON"""

        address_id = uuid4()
        headers = self.headers + ('address_id',)
        founders = tablib.Dataset(headers=headers, title='Founders')
        founders.append(('John', 'Adams', 90, address_id))
        founders_json = founders.export('json')

        expected_json = (
            '[{"first_name": "John", "last_name": "Adams", "gpa": 90, '
            '"address_id": "%s"}]' % str(address_id)
        )

        self.assertEqual(founders_json, expected_json)

    def test_csv_export(self):
        """Verify exporting dataset object as CSV."""

        # Build up the csv string with headers first, followed by each row
        csv = ''
        for col in self.headers:
            csv += col + ','

        csv = csv.strip(',') + '\r\n'

        for founder in self.founders:
            for col in founder:
                csv += str(col) + ','
            csv = csv.strip(',') + '\r\n'

        self.assertEqual(csv, self.founders.csv)

    def test_tsv_export(self):
        """Verify exporting dataset object as TSV."""

        # Build up the tsv string with headers first, followed by each row
        tsv = ''
        for col in self.headers:
            tsv += col + '\t'

        tsv = tsv.strip('\t') + '\r\n'

        for founder in self.founders:
            for col in founder:
                tsv += str(col) + '\t'
            tsv = tsv.strip('\t') + '\r\n'

        self.assertEqual(tsv, self.founders.tsv)

    def test_html_export(self):
        """HTML export"""

        html = markup.page()
        html.table.open()
        html.thead.open()

        html.tr(markup.oneliner.th(self.founders.headers))
        html.thead.close()

        for founder in self.founders:
            html.tr(markup.oneliner.td(founder))

        html.table.close()
        html = str(html)

        self.assertEqual(html, self.founders.html)

    def test_html_export_none_value(self):
        """HTML export"""

        html = markup.page()
        html.table.open()
        html.thead.open()

        html.tr(markup.oneliner.th(['foo', '', 'bar']))
        html.thead.close()

        html.tr(markup.oneliner.td(['foo', '', 'bar']))

        html.table.close()
        html = str(html)

        headers = ['foo', None, 'bar'];
        d = tablib.Dataset(['foo', None, 'bar'], headers=headers)

        self.assertEqual(html, d.html)

    def test_jira_export(self):

        expected = """||first_name||last_name||gpa||
|John|Adams|90|
|George|Washington|67|
|Thomas|Jefferson|50|"""
        self.assertEqual(expected, self.founders.jira)

    def test_jira_export_no_headers(self):
        self.assertEqual('|a|b|c|', tablib.Dataset(['a', 'b', 'c']).jira)

    def test_jira_export_none_and_empty_values(self):
        self.assertEqual('| | |c|', tablib.Dataset(['', None, 'c']).jira)

    def test_jira_export_empty_dataset(self):
        self.assertTrue(tablib.Dataset().jira is not None)

    def test_latex_export(self):
        """LaTeX export"""

        expected = """\
% Note: add \\usepackage{booktabs} to your preamble
%
\\begin{table}[!htbp]
  \\centering
  \\caption{Founders}
  \\begin{tabular}{lrr}
    \\toprule
      first\\_name & last\\_name & gpa \\\\
    \\cmidrule(r){1-1} \\cmidrule(lr){2-2} \\cmidrule(l){3-3}
      John & Adams & 90 \\\\
      George & Washington & 67 \\\\
      Thomas & Jefferson & 50 \\\\
    \\bottomrule
  \\end{tabular}
\\end{table}
"""
        output = self.founders.latex
        self.assertEqual(output, expected)

    def test_latex_export_empty_dataset(self):
        self.assertTrue(tablib.Dataset().latex is not None)

    def test_latex_export_no_headers(self):
        d = tablib.Dataset()
        d.append(('one', 'two', 'three'))
        self.assertTrue('one' in d.latex)

    def test_latex_export_caption(self):
        d = tablib.Dataset()
        d.append(('one', 'two', 'three'))
        self.assertFalse('caption' in d.latex)

        d.title = 'Title'
        self.assertTrue('\\caption{Title}' in d.latex)

    def test_latex_export_none_values(self):
        headers = ['foo', None, 'bar']
        d = tablib.Dataset(['foo', None, 'bar'], headers=headers)
        output = d.latex
        self.assertTrue('foo' in output)
        self.assertFalse('None' in output)

    def test_latex_escaping(self):
        d = tablib.Dataset(['~', '^'])
        output = d.latex

        self.assertFalse('~' in output)
        self.assertTrue('textasciitilde' in output)
        self.assertFalse('^' in output)
        self.assertTrue('textasciicircum' in output)

    def test_str_no_columns(self):
        d = tablib.Dataset(['a', 1], ['b', 2], ['c', 3])
        output = '%s' % d

        self.assertEqual(output.splitlines(), [
            'a|1',
            'b|2',
            'c|3'
        ])

    def test_unicode_append(self):
        """Passes in a single unicode character and exports."""

        if is_py3:
            new_row = ('å', 'é')
        else:
            exec ("new_row = (u'å', u'é')")

        data.append(new_row)

        data.json
        data.yaml
        data.csv
        data.tsv
        data.xls
        data.xlsx
        data.ods
        data.html
        data.jira
        data.latex
        data.df
        data.rst

    def test_datetime_append(self):
        """Passes in a single datetime and a single date and exports."""

        new_row = (
            datetime.datetime.now(),
            datetime.datetime.today(),
        )

        data.append(new_row)

        data.json
        data.yaml
        data.csv
        data.tsv
        data.xls
        data.xlsx
        data.ods
        data.html
        data.jira
        data.latex
        data.rst

    def test_book_export_no_exceptions(self):
        """Test that various exports don't error out."""

        book = tablib.Databook()
        book.add_sheet(data)

        book.json
        book.yaml
        book.xls
        book.xlsx
        book.ods
        book.html
        data.rst

    def test_json_import_set(self):
        """Generate and import JSON set serialization."""
        data.append(self.john)
        data.append(self.george)
        data.headers = self.headers

        _json = data.json

        data.json = _json

        self.assertEqual(json.loads(_json), json.loads(data.json))

    def test_json_import_book(self):
        """Generate and import JSON book serialization."""
        data.append(self.john)
        data.append(self.george)
        data.headers = self.headers

        book.add_sheet(data)
        _json = book.json

        book.json = _json

        self.assertEqual(json.loads(_json), json.loads(book.json))

    def test_yaml_import_set(self):
        """Generate and import YAML set serialization."""
        data.append(self.john)
        data.append(self.george)
        data.headers = self.headers

        _yaml = data.yaml

        data.yaml = _yaml

        self.assertEqual(_yaml, data.yaml)

    def test_yaml_import_book(self):
        """Generate and import YAML book serialization."""
        data.append(self.john)
        data.append(self.george)
        data.headers = self.headers

        book.add_sheet(data)
        _yaml = book.yaml

        book.yaml = _yaml

        self.assertEqual(_yaml, book.yaml)

    def test_csv_import_set(self):
        """Generate and import CSV set serialization."""
        data.append(self.john)
        data.append(self.george)
        data.headers = self.headers

        _csv = data.csv

        data.csv = _csv

        self.assertEqual(_csv, data.csv)

    def test_csv_import_set_semicolons(self):
        """Test for proper output with semicolon separated CSV."""
        data.append(self.john)
        data.append(self.george)
        data.headers = self.headers

        _csv = data.get_csv(delimiter=';')

        data.set_csv(_csv, delimiter=';')

        self.assertEqual(_csv, data.get_csv(delimiter=';'))

    def test_csv_import_set_with_spaces(self):
        """Generate and import CSV set serialization when row values have
        spaces."""
        data.append(('Bill Gates', 'Microsoft'))
        data.append(('Steve Jobs', 'Apple'))
        data.headers = ('Name', 'Company')

        _csv = data.csv

        data.csv = _csv

        self.assertEqual(_csv, data.csv)

    def test_csv_import_set_semicolon_with_spaces(self):
        """Generate and import semicolon separated CSV set serialization when row values have
        spaces."""
        data.append(('Bill Gates', 'Microsoft'))
        data.append(('Steve Jobs', 'Apple'))
        data.headers = ('Name', 'Company')

        _csv = data.get_csv(delimiter=';')

        data.set_csv(_csv, delimiter=';')

        self.assertEqual(_csv, data.get_csv(delimiter=';'))

    def test_csv_import_set_with_newlines(self):
        """Generate and import CSV set serialization when row values have
        newlines."""
        data.append(('Markdown\n=======',
                     'A cool language\n\nwith paragraphs'))
        data.append(('reStructedText\n==============',
                     'Another cool language\n\nwith paragraphs'))
        data.headers = ('title', 'body')

        _csv = data.csv
        data.csv = _csv

        self.assertEqual(_csv, data.csv)

    def test_csv_import_set_with_unicode_str(self):
        """Import CSV set with non-ascii characters in unicode literal"""
        csv_text = (
            "id,givenname,surname,loginname,email,pref_firstname,pref_lastname\n"
            "13765,Ævar,Arnfjörð,testing,test@example.com,Ævar,Arnfjörð"
        )
        data.csv = csv_text
        self.assertEqual(data.width, 7)

    def test_tsv_import_set(self):
        """Generate and import TSV set serialization."""
        data.append(self.john)
        data.append(self.george)
        data.headers = self.headers

        _tsv = data.tsv

        data.tsv = _tsv

        self.assertEqual(_tsv, data.tsv)

    def test_dbf_import_set(self):
        data.append(self.john)
        data.append(self.george)
        data.headers = self.headers

        _dbf = data.dbf
        data.dbf = _dbf

        # self.assertEqual(_dbf, data.dbf)
        try:
            self.assertEqual(_dbf, data.dbf)
        except AssertionError:
            index = 0
            so_far = ''
            for reg_char, data_char in zip(_dbf, data.dbf):
                so_far += chr(data_char)
                if reg_char != data_char and index not in [1, 2, 3]:
                    raise AssertionError('Failing at char %s: %s vs %s %s' % (
                        index, reg_char, data_char, so_far))
                index += 1

    def test_dbf_export_set(self):
        """Test DBF import."""
        data.append(self.john)
        data.append(self.george)
        data.append(self.tom)
        data.headers = self.headers

        _regression_dbf = (b'\x03r\x06\x06\x03\x00\x00\x00\x81\x00\xab\x00\x00'
                           b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
                           b'\x00\x00\x00FIRST_NAME\x00C\x00\x00\x00\x00P\x00\x00\x00\x00\x00'
                           b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00LAST_NAME\x00\x00C\x00'
                           b'\x00\x00\x00P\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
                           b'\x00\x00GPA\x00\x00\x00\x00\x00\x00\x00\x00N\x00\x00\x00\x00\n'
                           b'\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\r'
                           )
        _regression_dbf += b' John' + (b' ' * 75)
        _regression_dbf += b' Adams' + (b' ' * 74)
        _regression_dbf += b' 90.0000000'
        _regression_dbf += b' George' + (b' ' * 73)
        _regression_dbf += b' Washington' + (b' ' * 69)
        _regression_dbf += b' 67.0000000'
        _regression_dbf += b' Thomas' + (b' ' * 73)
        _regression_dbf += b' Jefferson' + (b' ' * 70)
        _regression_dbf += b' 50.0000000'
        _regression_dbf += b'\x1a'

        if is_py3:
            # If in python3, decode regression string to binary.
            # _regression_dbf = bytes(_regression_dbf, 'utf-8')
            # _regression_dbf = _regression_dbf.replace(b'\n', b'\r')
            pass

        try:
            self.assertEqual(_regression_dbf, data.dbf)
        except AssertionError:
            index = 0
            found_so_far = ''
            for reg_char, data_char in zip(_regression_dbf, data.dbf):
                # found_so_far += chr(data_char)
                if reg_char != data_char and index not in [1, 2, 3]:
                    raise AssertionError(
                        'Failing at char %s: %s vs %s (found %s)' % (
                            index, reg_char, data_char, found_so_far))
                index += 1

    def test_dbf_format_detect(self):
        """Test the DBF format detection."""
        _dbf = (b'\x03r\x06\x03\x03\x00\x00\x00\x81\x00\xab\x00\x00'
                b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
                b'\x00\x00\x00FIRST_NAME\x00C\x00\x00\x00\x00P\x00\x00\x00\x00\x00'
                b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00LAST_NAME\x00\x00C\x00'
                b'\x00\x00\x00P\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
                b'\x00\x00GPA\x00\x00\x00\x00\x00\x00\x00\x00N\x00\x00\x00\x00\n'
                b'\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\r'
                )
        _dbf += b' John' + (b' ' * 75)
        _dbf += b' Adams' + (b' ' * 74)
        _dbf += b' 90.0000000'
        _dbf += b' George' + (b' ' * 73)
        _dbf += b' Washington' + (b' ' * 69)
        _dbf += b' 67.0000000'
        _dbf += b' Thomas' + (b' ' * 73)
        _dbf += b' Jefferson' + (b' ' * 70)
        _dbf += b' 50.0000000'
        _dbf += b'\x1a'

        _yaml = '- {age: 90, first_name: John, last_name: Adams}'
        _tsv = 'foo\tbar'
        _csv = '1,2,3\n4,5,6\n7,8,9\n'
        _json = '[{"last_name": "Adams","age": 90,"first_name": "John"}]'

        _bunk = (
            '¡¡¡¡¡¡¡¡£™∞¢£§∞§¶•¶ª∞¶•ªº••ª–º§•†•§º¶•†¥ª–º•§ƒø¥¨©πƒø†ˆ¥ç©¨√øˆ¥≈†ƒ¥ç©ø¨çˆ¥ƒçø¶'
        )
        self.assertTrue(tablib.formats.dbf.detect(_dbf))
        self.assertFalse(tablib.formats.dbf.detect(_yaml))
        self.assertFalse(tablib.formats.dbf.detect(_tsv))
        self.assertFalse(tablib.formats.dbf.detect(_csv))
        self.assertFalse(tablib.formats.dbf.detect(_json))
        self.assertFalse(tablib.formats.dbf.detect(_bunk))

    def test_csv_format_detect(self):
        """Test CSV format detection."""

        _csv = (
            '1,2,3\n'
            '4,5,6\n'
            '7,8,9\n'
        )
        _bunk = (
            '¡¡¡¡¡¡¡¡£™∞¢£§∞§¶•¶ª∞¶•ªº••ª–º§•†•§º¶•†¥ª–º•§ƒø¥¨©πƒø†ˆ¥ç©¨√øˆ¥≈†ƒ¥ç©ø¨çˆ¥ƒçø¶'
        )

        self.assertTrue(tablib.formats.csv.detect(_csv))
        self.assertFalse(tablib.formats.csv.detect(_bunk))

    def test_tsv_format_detect(self):
        """Test TSV format detection."""

        _tsv = (
            '1\t2\t3\n'
            '4\t5\t6\n'
            '7\t8\t9\n'
        )
        _bunk = (
            '¡¡¡¡¡¡¡¡£™∞¢£§∞§¶•¶ª∞¶•ªº••ª–º§•†•§º¶•†¥ª–º•§ƒø¥¨©πƒø†ˆ¥ç©¨√øˆ¥≈†ƒ¥ç©ø¨çˆ¥ƒçø¶'
        )

        self.assertTrue(tablib.formats.tsv.detect(_tsv))
        self.assertFalse(tablib.formats.tsv.detect(_bunk))

    def test_json_format_detect(self):
        """Test JSON format detection."""

        _json = '[{"last_name": "Adams","age": 90,"first_name": "John"}]'
        _bunk = (
            '¡¡¡¡¡¡¡¡£™∞¢£§∞§¶•¶ª∞¶•ªº••ª–º§•†•§º¶•†¥ª–º•§ƒø¥¨©πƒø†ˆ¥ç©¨√øˆ¥≈†ƒ¥ç©ø¨çˆ¥ƒçø¶'
        )

        self.assertTrue(tablib.formats.json.detect(_json))
        self.assertFalse(tablib.formats.json.detect(_bunk))

    def test_yaml_format_detect(self):
        """Test YAML format detection."""

        _yaml = '- {age: 90, first_name: John, last_name: Adams}'
        _tsv = 'foo\tbar'
        _bunk = (
            '¡¡¡¡¡¡---///\n\n\n¡¡£™∞¢£§∞§¶•¶ª∞¶•ªº••ª–º§•†•§º¶•†¥ª–º•§ƒø¥¨©πƒø†ˆ¥ç©¨√øˆ¥≈†ƒ¥ç©ø¨çˆ¥ƒçø¶'
        )

        self.assertTrue(tablib.formats.yaml.detect(_yaml))
        self.assertFalse(tablib.formats.yaml.detect(_bunk))
        self.assertFalse(tablib.formats.yaml.detect(_tsv))

    def test_auto_format_detect(self):
        """Test auto format detection."""

        _yaml = '- {age: 90, first_name: John, last_name: Adams}'
        _json = '[{"last_name": "Adams","age": 90,"first_name": "John"}]'
        _csv = '1,2,3\n4,5,6\n7,8,9\n'
        _tsv = '1\t2\t3\n4\t5\t6\n7\t8\t9\n'
        _bunk = '¡¡¡¡¡¡---///\n\n\n¡¡£™∞¢£§∞§¶•¶ª∞¶•ªº••ª–º§•†•§º¶•†¥ª–º•§ƒø¥¨©πƒø†ˆ¥ç©¨√øˆ¥≈†ƒ¥ç©ø¨çˆ¥ƒçø¶'

        self.assertEqual(tablib.detect_format(_yaml), 'yaml')
        self.assertEqual(tablib.detect_format(_csv), 'csv')
        self.assertEqual(tablib.detect_format(_tsv), 'tsv')
        self.assertEqual(tablib.detect_format(_json), 'json')
        self.assertEqual(tablib.detect_format(_bunk), None)

    def test_transpose(self):
        """Transpose a dataset."""

        transposed_founders = self.founders.transpose()
        first_row = transposed_founders[0]
        second_row = transposed_founders[1]

        self.assertEqual(transposed_founders.headers,
                         ["first_name", "John", "George", "Thomas"])
        self.assertEqual(first_row,
                         ("last_name", "Adams", "Washington", "Jefferson"))
        self.assertEqual(second_row,
                         ("gpa", 90, 67, 50))

    def test_transpose_multiple_headers(self):

        data = tablib.Dataset()
        data.headers = ("first_name", "last_name", "age")
        data.append(('John', 'Adams', 90))
        data.append(('George', 'Washington', 67))
        data.append(('John', 'Tyler', 71))
        self.assertEqual(data.transpose().transpose().dict, data.dict)

    def test_row_stacking(self):
        """Row stacking."""

        to_join = tablib.Dataset(headers=self.founders.headers)

        for row in self.founders:
            to_join.append(row=row)

        row_stacked = self.founders.stack(to_join)

        for column in row_stacked.headers:
            original_data = self.founders[column]
            expected_data = original_data + original_data
            self.assertEqual(row_stacked[column], expected_data)

    def test_column_stacking(self):
        """Column stacking"""

        to_join = tablib.Dataset(headers=self.founders.headers)

        for row in self.founders:
            to_join.append(row=row)

        column_stacked = self.founders.stack_cols(to_join)

        for index, row in enumerate(column_stacked):
            original_data = self.founders[index]
            expected_data = original_data + original_data
            self.assertEqual(row, expected_data)

        self.assertEqual(column_stacked[0],
                         ("John", "Adams", 90, "John", "Adams", 90))

    def test_sorting(self):
        """Sort columns."""

        sorted_data = self.founders.sort(col="first_name")
        self.assertEqual(sorted_data.title, 'Founders')

        first_row = sorted_data[0]
        second_row = sorted_data[2]
        third_row = sorted_data[1]
        expected_first = self.founders[1]
        expected_second = self.founders[2]
        expected_third = self.founders[0]

        self.assertEqual(first_row, expected_first)
        self.assertEqual(second_row, expected_second)
        self.assertEqual(third_row, expected_third)

    def test_remove_duplicates(self):
        """Unique Rows."""

        self.founders.append(self.john)
        self.founders.append(self.george)
        self.founders.append(self.tom)
        self.assertEqual(self.founders[0], self.founders[3])
        self.assertEqual(self.founders[1], self.founders[4])
        self.assertEqual(self.founders[2], self.founders[5])
        self.assertEqual(self.founders.height, 6)

        self.founders.remove_duplicates()

        self.assertEqual(self.founders[0], self.john)
        self.assertEqual(self.founders[1], self.george)
        self.assertEqual(self.founders[2], self.tom)
        self.assertEqual(self.founders.height, 3)

    def test_wipe(self):
        """Purge a dataset."""

        new_row = (1, 2, 3)
        data.append(new_row)

        # Verify width/data
        self.assertTrue(data.width == len(new_row))
        self.assertTrue(data[0] == new_row)

        data.wipe()
        new_row = (1, 2, 3, 4)
        data.append(new_row)
        self.assertTrue(data.width == len(new_row))
        self.assertTrue(data[0] == new_row)

    def test_subset(self):
        """Create a subset of a dataset"""

        rows = (0, 2)
        columns = ('first_name', 'gpa')

        data.headers = self.headers

        data.append(self.john)
        data.append(self.george)
        data.append(self.tom)

        # Verify data is truncated
        subset = data.subset(rows=rows, cols=columns)
        self.assertEqual(type(subset), tablib.Dataset)
        self.assertEqual(subset.headers, list(columns))
        self.assertEqual(subset._data[0].list, ['John', 90])
        self.assertEqual(subset._data[1].list, ['Thomas', 50])

    def test_formatters(self):
        """Confirm formatters are being triggered."""

        def _formatter(cell_value):
            return str(cell_value).upper()

        self.founders.add_formatter('last_name', _formatter)

        for name in [r['last_name'] for r in self.founders.dict]:
            self.assertTrue(name.isupper())

    def test_unicode_csv(self):
        """Check if unicode in csv export doesn't raise."""

        data = tablib.Dataset()

        if sys.version_info[0] > 2:
            data.append(['\xfc', '\xfd'])
        else:
            exec ("data.append([u'\xfc', u'\xfd'])")

        data.csv

    def test_csv_column_select(self):
        """Build up a CSV and test selecting a column"""

        data = tablib.Dataset()
        data.csv = self.founders.csv

        headers = data.headers
        self.assertTrue(isinstance(headers[0], unicode))

        orig_first_name = self.founders[self.headers[0]]
        csv_first_name = data[headers[0]]
        self.assertEqual(orig_first_name, csv_first_name)

    def test_csv_column_delete(self):
        """Build up a CSV and test deleting a column"""

        data = tablib.Dataset()
        data.csv = self.founders.csv

        target_header = data.headers[0]
        self.assertTrue(isinstance(target_header, unicode))

        del data[target_header]

        self.assertTrue(target_header not in data.headers)

    def test_csv_column_sort(self):
        """Build up a CSV and test sorting a column by name"""

        data = tablib.Dataset()
        data.csv = self.founders.csv

        orig_target_header = self.founders.headers[1]
        target_header = data.headers[1]

        self.founders.sort(orig_target_header)
        data.sort(target_header)

        self.assertEqual(self.founders[orig_target_header], data[target_header])

    def test_unicode_renders_markdown_table(self):
        # add another entry to test right field width for
        # integer
        self.founders.append(('Old', 'Man', 100500))
        self.assertEqual('first_name|last_name |gpa   ', unicode(self.founders).split('\n')[0])

    def test_databook_add_sheet_accepts_only_dataset_instances(self):
        class NotDataset(object):
            def append(self, item):
                pass

        dataset = NotDataset()
        dataset.append(self.john)

        self.assertRaises(tablib.InvalidDatasetType, book.add_sheet, dataset)

    def test_databook_add_sheet_accepts_dataset_subclasses(self):
        class DatasetSubclass(tablib.Dataset):
            pass

        # just checking if subclass of tablib.Dataset can be added to Databook
        dataset = DatasetSubclass()
        dataset.append(self.john)
        dataset.append(self.tom)

        try:
            book.add_sheet(dataset)
        except tablib.InvalidDatasetType:
            self.fail("Subclass of tablib.Dataset should be accepted by Databook.add_sheet")

    def test_csv_formatter_support_kwargs(self):
        """Test CSV import and export with formatter configuration."""
        data.append(self.john)
        data.append(self.george)
        data.headers = self.headers

        expected = 'first_name;last_name;gpa\nJohn;Adams;90\nGeorge;Washington;67\n'

        kwargs = dict(delimiter=';', lineterminator='\n')
        _csv = data.export('csv', **kwargs)
        self.assertEqual(expected, _csv)

        # the import works but consider default delimiter=','
        d1 = tablib.import_set(_csv, format="csv")
        self.assertEqual(1, len(d1.headers))

        d2 = tablib.import_set(_csv, format="csv", **kwargs)
        self.assertEqual(3, len(d2.headers))

    def test_databook_formatter_support_kwargs(self):
        """Test XLSX export with formatter configuration."""
        self.founders.export('xlsx', freeze_panes=False)

    def test_databook_formatter_with_new_lines(self):
        """Test XLSX export with new line in content."""
        self.founders.append(('First\nSecond', 'Name', 42))
        self.founders.export('xlsx')

    def test_rst_force_grid(self):
        data.append(self.john)
        data.append(self.george)
        data.headers = self.headers

        simple = tablib.formats._rst.export_set(data)
        grid = tablib.formats._rst.export_set(data, force_grid=True)
        self.assertNotEqual(simple, grid)
        self.assertNotIn('+', simple)
        self.assertIn('+', grid)


class DocTests(unittest.TestCase):

    def test_rst_formatter_doctests(self):
        results = doctest.testmod(tablib.formats._rst)
        self.assertEqual(results.failed, 0)


if __name__ == '__main__':
    unittest.main()