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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""Tests for tablib."""
import unittest
import tablib
class TablibTestCase(unittest.TestCase):
"""Tablib test cases."""
def setUp(self):
"""Create simple data set with headers."""
global data
data = tablib.Dataset()
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)
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_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.assertEquals(data[0], ('kenneth', 'reitz'))
self.assertEquals(data.width, 2)
# With Headers
data.headers = ('fname', 'lname')
new_col = ['age', 21, 22]
data.append(col=new_col)
self.assertEquals(data[new_col[0]], new_col[1:])
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.assertEquals(data[0], tuple([new_col[0]]))
self.assertEquals(data.width, 1)
self.assertEquals(data.height, len(new_col))
def test_add_column_no_data_with_headers(self):
"""Verify adding new column with headers."""
data.headers = ('first', 'last')
new_col = ('age',)
data.append(col=new_col)
self.assertEquals(len(data.headers), 3)
self.assertEquals(data.width, 3)
new_col = ('foo', 'bar')
self.assertRaises(tablib.InvalidDimensions, data.append, col=new_col)
def tuple_check(self):
#TODO: tuple check
data.append(col=(1, 2, 3))
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_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_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_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_unicode_append(self):
"""Passes in a single unicode charecter and exports."""
pass
if __name__ == '__main__':
unittest.main()
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