def test_compute(self):
tableset = TableSet(self.tables.values(), self.tables.keys())
new_tableset = tableset.compute([
('new_column',
Formula(self.text_type, lambda r: '%(letter)s-%(number)i' % r))
])
new_table = new_tableset['table1']
self.assertColumnNames(new_table, (
'letter',
'number',
'new_column',
))
self.assertColumnTypes(new_table, (Text, Number, Text))
self.assertRows(new_table, [('a', 1, 'a-1'), ('a', 3, 'a-3'),
('b', 2, 'b-2')])
new_table = new_tableset['table2']
self.assertRows(new_table, [('b', 0, 'b-0'), ('a', 2, 'a-2'),
('c', 5, 'c-5')])
new_table = new_tableset['table3']
self.assertSequenceEqual(new_table.rows[0], ('a', 1, 'a-1'))
self.assertSequenceEqual(new_table.rows[1], ('a', 2, 'a-2'))
self.assertSequenceEqual(new_table.rows[2], ('c', 3, 'c-3'))
def test_compute_multiple(self):
new_table = self.table.compute([
('number',
Formula(self.number_type, lambda r: r['two'] + r['three'])),
('text',
Formula(self.text_type, lambda r:
(r['one'] or '-') + six.text_type(r['three'])))
])
self.assertIsNot(new_table, self.table)
self.assertColumnNames(
new_table, ['one', 'two', 'three', 'four', 'number', 'text'])
self.assertColumnTypes(new_table,
[Text, Number, Number, Number, Number, Text])
self.assertSequenceEqual(new_table.rows[0], ('a', 2, 3, 4, 5, 'a3'))
self.assertSequenceEqual(new_table.columns['number'], (5, 8, 6, 9))
self.assertSequenceEqual(new_table.columns['text'],
('a3', '-5', 'a4', 'b6'))
def test_compute_multiple(self):
new_table = self.table.compute([
(Formula(self.number_type, lambda r: r['two'] + r['three']), 'test')
])
self.assertIsNot(new_table, self.table)
self.assertEqual(len(new_table.rows), 4)
self.assertEqual(len(new_table.columns), 5)
self.assertSequenceEqual(new_table.rows[0], ('a', 2, 3, 4, 5))
self.assertSequenceEqual(new_table.columns['test'], (5, 8, 6, 9))
def test_compute_replace_change_type(self):
new_table = self.table.compute([
('two', Formula(self.text_type, lambda r: 'a'))
], replace=True)
self.assertIsNot(new_table, self.table)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'four'])
self.assertColumnTypes(new_table, [Text, Text, Number, Number])
self.assertSequenceEqual(new_table.rows[0], ('a', 'a', 3, 4))
self.assertSequenceEqual(new_table.columns['two'], ('a', 'a', 'a', 'a'))
def test_compute(self):
new_table = self.table.compute([
('test', Formula(self.number_type, lambda r: r['two'] + r['three']))
])
self.assertIsNot(new_table, self.table)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'four', 'test'])
self.assertColumnTypes(new_table, [Text, Number, Number, Number, Number])
self.assertSequenceEqual(new_table.rows[0], ('a', 2, 3, 4, 5))
self.assertSequenceEqual(new_table.columns['test'], (5, 8, 6, 9))
def test_formula_no_validate(self):
new_table = self.table.compute([('test',
Formula(self.number_type,
lambda r: r['one'],
cast=False))])
# Now everything is screwed up
self.assertSequenceEqual(
new_table.rows[0],
('a', Decimal('2'), Decimal('3'), Decimal('4'), 'a'))
self.assertEqual(new_table.columns['test'][0], 'a')
def test_formula(self):
new_table = self.table.compute([
('test', Formula(self.number_type,
lambda r: r['two'] + r['three']))
])
self.assertIsNot(new_table, self.table)
self.assertEqual(len(new_table.rows), 4)
self.assertEqual(len(new_table.columns), 5)
self.assertSequenceEqual(
new_table.rows[0],
('a', Decimal('2'), Decimal('3'), Decimal('4'), Decimal('5')))
self.assertEqual(new_table.columns['test'][0], Decimal('5'))
self.assertEqual(new_table.columns['test'][1], Decimal('8'))
self.assertEqual(new_table.columns['test'][2], Decimal('6'))
self.assertEqual(new_table.columns['test'][3], Decimal('7'))
def test_compute(self):
tableset = TableSet(self.tables.values(), self.tables.keys())
new_tableset = tableset.compute([
(Formula(self.text_type,
lambda r: '%(letter)s-%(number)i' % r), 'new_column')
])
new_table = new_tableset['table1']
self.assertEqual(len(new_table.rows), 3)
self.assertEqual(len(new_table.columns), 3)
self.assertSequenceEqual(new_table._column_types, (
self.text_type,
self.number_type,
self.text_type,
))
self.assertSequenceEqual(new_table._column_names, (
'letter',
'number',
'new_column',
))
self.assertSequenceEqual(new_table.rows[0], ('a', 1, 'a-1'))
self.assertSequenceEqual(new_table.rows[1], ('a', 3, 'a-3'))
self.assertSequenceEqual(new_table.rows[2], ('b', 2, 'b-2'))
new_table = new_tableset['table2']
self.assertSequenceEqual(new_table.rows[0], ('b', 0, 'b-0'))
self.assertSequenceEqual(new_table.rows[1], ('a', 2, 'a-2'))
self.assertSequenceEqual(new_table.rows[2], ('c', 5, 'c-5'))
new_table = new_tableset['table3']
self.assertSequenceEqual(new_table.rows[0], ('a', 1, 'a-1'))
self.assertSequenceEqual(new_table.rows[1], ('a', 2, 'a-2'))
self.assertSequenceEqual(new_table.rows[2], ('c', 3, 'c-3'))
def test_formula_invalid(self):
with self.assertRaises(CastError):
self.table.compute([('test',
Formula(self.number_type,
lambda r: r['one']))])