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from agate import Table
from agate.data_types import Number, Text
from agate.testcase import AgateTestCase
class TestJoin(AgateTestCase):
def setUp(self):
self.left_rows = (
(1, 4, 'a'),
(2, 3, 'b'),
(None, 2, 'c')
)
self.right_rows = (
(1, 4, 'a'),
(2, 3, 'b'),
(None, 2, 'c')
)
self.number_type = Number()
self.text_type = Text()
self.left_column_names = ['one', 'two', 'three']
self.right_column_names = ['four', 'five', 'six']
self.column_types = [self.number_type, self.number_type, self.text_type]
self.left = Table(self.left_rows, self.left_column_names, self.column_types)
self.right = Table(self.right_rows, self.right_column_names, self.column_types)
def test_join(self):
new_table = self.left.join(self.right, 'one', 'four')
self.assertIsNot(new_table, self.left)
self.assertIsNot(new_table, self.right)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'five', 'six'])
self.assertColumnTypes(new_table, [Number, Number, Text, Number, Text])
self.assertRows(new_table, [
(1, 4, 'a', 4, 'a'),
(2, 3, 'b', 3, 'b'),
(None, 2, 'c', 2, 'c')
])
def test_join_column_indicies(self):
new_table = self.left.join(self.right, 0, 0)
self.assertIsNot(new_table, self.left)
self.assertIsNot(new_table, self.right)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'five', 'six'])
self.assertColumnTypes(new_table, [Number, Number, Text, Number, Text])
self.assertRows(new_table, [
(1, 4, 'a', 4, 'a'),
(2, 3, 'b', 3, 'b'),
(None, 2, 'c', 2, 'c')
])
def test_join_match_multiple(self):
left_rows = (
(1, 4, 'a'),
(2, 3, 'b')
)
right_rows = (
(1, 1, 'a'),
(1, 2, 'a'),
(2, 2, 'b')
)
left = Table(left_rows, self.left_column_names, self.column_types)
right = Table(right_rows, self.right_column_names, self.column_types)
new_table = left.join(right, 'one', 'five')
self.assertIsNot(new_table, left)
self.assertIsNot(new_table, right)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'four', 'six'])
self.assertColumnTypes(new_table, [Number, Number, Text, Number, Text])
self.assertRows(new_table, [
(1, 4, 'a', 1, 'a'),
(2, 3, 'b', 1, 'a'),
(2, 3, 'b', 2, 'b')
])
def test_join2(self):
new_table = self.left.join(self.right, 'one', 'five')
self.assertIsNot(new_table, self.left)
self.assertIsNot(new_table, self.right)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'four', 'six'])
self.assertColumnTypes(new_table, [Number, Number, Text, Number, Text])
self.assertRows(new_table, [
(1, 4, 'a', None, None),
(2, 3, 'b', None, 'c'),
(None, 2, 'c', None, None)
])
def test_join_same_column_name(self):
right_column_names = ['four', 'one', 'six']
right = Table(self.right_rows, right_column_names, self.column_types)
new_table = self.left.join(right, 'one')
self.assertIsNot(new_table, self.left)
self.assertIsNot(new_table, right)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'four', 'six'])
self.assertColumnTypes(new_table, [Number, Number, Text, Number, Text])
self.assertRows(new_table, [
(1, 4, 'a', None, None),
(2, 3, 'b', None, 'c'),
(None, 2, 'c', None, None)
])
def test_join_multiple_columns(self):
new_table = self.left.join(
self.right,
['two', 'three'],
['five', 'six']
)
self.assertIsNot(new_table, self.left)
self.assertIsNot(new_table, self.right)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'four'])
self.assertColumnTypes(new_table, [Number, Number, Text, Number])
self.assertRows(new_table, [
(1, 4, 'a', 1),
(2, 3, 'b', 2),
(None, 2, 'c', None)
])
def test_join_func(self):
new_table = self.left.join(
self.right,
lambda left: '%i%s' % (left['two'], left['three']),
lambda right: '%i%s' % (right['five'], right['six'])
)
self.assertIsNot(new_table, self.left)
self.assertIsNot(new_table, self.right)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'four', 'five', 'six'])
self.assertColumnTypes(new_table, [Number, Number, Text, Number, Number, Text])
self.assertRows(new_table, [
(1, 4, 'a', 1, 4, 'a'),
(2, 3, 'b', 2, 3, 'b'),
(None, 2, 'c', None, 2, 'c')
])
def test_join_column_does_not_exist(self):
with self.assertRaises(KeyError):
self.left.join(self.right, 'one', 'seven')
def test_inner_join(self):
new_table = self.left.join(self.right, 'one', 'four', inner=True)
self.assertIsNot(new_table, self.left)
self.assertIsNot(new_table, self.right)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'five', 'six'])
self.assertColumnTypes(new_table, [Number, Number, Text, Number, Text])
self.assertRows(new_table, [
(1, 4, 'a', 4, 'a'),
(2, 3, 'b', 3, 'b'),
(None, 2, 'c', 2, 'c')
])
def test_inner_join2(self):
new_table = self.left.join(self.right, 'one', 'five', inner=True)
self.assertIsNot(new_table, self.left)
self.assertIsNot(new_table, self.right)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'four', 'six'])
self.assertColumnTypes(new_table, [Number, Number, Text, Number, Text])
self.assertRows(new_table, [
(2, 3, 'b', None, 'c')
])
def test_inner_join_same_column_name(self):
right_column_names = ['four', 'one', 'six']
right = Table(self.right_rows, right_column_names, self.column_types)
new_table = self.left.join(right, 'one', inner=True)
self.assertIsNot(new_table, self.left)
self.assertIsNot(new_table, right)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'four', 'six'])
self.assertColumnTypes(new_table, [Number, Number, Text, Number, Text])
self.assertRows(new_table, [
(2, 3, 'b', None, 'c')
])
def test_inner_join_func(self):
new_table = self.left.join(
self.right,
lambda left: '%i%s' % (left['two'], left['three']),
lambda right: '%i%s' % (right['five'], right['six']),
inner=True
)
self.assertIsNot(new_table, self.left)
self.assertIsNot(new_table, self.right)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'four', 'five', 'six'])
self.assertColumnTypes(new_table, [Number, Number, Text, Number, Number, Text])
self.assertRows(new_table, [
(1, 4, 'a', 1, 4, 'a')
])
def test_join_with_row_names(self):
left = Table(self.left_rows, self.left_column_names, self.column_types, row_names='three')
new_table = left.join(self.right, 'one', 'four')
self.assertRowNames(new_table, ('a', 'b', 'c'))
def test_join_require_match(self):
with self.assertRaises(ValueError):
self.left.join(self.right, 'one', 'five', require_match=True)
with self.assertRaises(ValueError):
self.left.join(self.right, 'one', 'five', require_match=True)
self.left.join(self.right, 'one', 'four', require_match=True)
def test_join_columns_kwarg(self):
new_table = self.left.join(self.right, 'one', 'four', columns=['six'])
self.assertIsNot(new_table, self.left)
self.assertIsNot(new_table, self.right)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'six'])
self.assertColumnTypes(new_table, [Number, Number, Text, Text])
self.assertRows(new_table, [
(1, 4, 'a', 'a'),
(2, 3, 'b', 'b'),
(None, 2, 'c', 'c')
])
def test_join_columns_kwarg_right_key(self):
new_table = self.left.join(self.right, 'one', 'four', columns=['four', 'six'])
self.assertIsNot(new_table, self.left)
self.assertIsNot(new_table, self.right)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'four', 'six'])
self.assertColumnTypes(new_table, [Number, Number, Text, Number, Text])
self.assertRows(new_table, [
(1, 4, 'a', 1, 'a'),
(2, 3, 'b', 2, 'b'),
(None, 2, 'c', None, 'c')
])
def test_join_rows_are_tuples(self):
new_table = self.left.join(self.right, 'one', 'four', columns=['four', 'six'])
self.assertIsInstance(new_table.rows[0].values(), tuple)
def test_full_outer(self):
left_rows = (
(1, 4, 'a'),
(2, 3, 'b'),
(3, 2, 'c')
)
right_rows = (
(1, 4, 'a'),
(2, 3, 'b'),
(4, 2, 'c')
)
left = Table(left_rows, self.left_column_names, self.column_types)
right = Table(right_rows, self.right_column_names, self.column_types)
new_table = left.join(right, 'one', 'four', full_outer=True)
self.assertIsNot(new_table, left)
self.assertIsNot(new_table, right)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'four', 'five', 'six'])
self.assertColumnTypes(new_table, [Number, Number, Text, Number, Number, Text])
self.assertRows(new_table, [
(1, 4, 'a', 1, 4, 'a'),
(2, 3, 'b', 2, 3, 'b'),
(3, 2, 'c', None, None, None),
(None, None, None, 4, 2, 'c')
])
def test_join_by_row_number(self):
new_table = self.left.join(self.right, full_outer=True)
self.assertIsNot(new_table, self.left)
self.assertIsNot(new_table, self.right)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'four', 'five', 'six'])
self.assertColumnTypes(new_table, [Number, Number, Text, Number, Number, Text])
self.assertRows(new_table, [
(1, 4, 'a', 1, 4, 'a'),
(2, 3, 'b', 2, 3, 'b'),
(None, 2, 'c', None, 2, 'c')
])
def test_join_by_row_number_short_right(self):
right_rows = self.right_rows + ((7, 9, 'z'),)
right = Table(right_rows, self.right_column_names, self.column_types)
new_table = self.left.join(right, full_outer=True)
self.assertIsNot(new_table, self.left)
self.assertIsNot(new_table, right)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'four', 'five', 'six'])
self.assertColumnTypes(new_table, [Number, Number, Text, Number, Number, Text])
self.assertRows(new_table, [
(1, 4, 'a', 1, 4, 'a'),
(2, 3, 'b', 2, 3, 'b'),
(None, 2, 'c', None, 2, 'c'),
(None, None, None, 7, 9, 'z')
])
def test_join_by_row_number_short_left(self):
left_rows = self.left_rows + ((7, 9, 'z'),)
left = Table(left_rows, self.left_column_names, self.column_types)
new_table = left.join(self.right, full_outer=True)
self.assertIsNot(new_table, left)
self.assertIsNot(new_table, self.right)
self.assertColumnNames(new_table, ['one', 'two', 'three', 'four', 'five', 'six'])
self.assertColumnTypes(new_table, [Number, Number, Text, Number, Number, Text])
self.assertRows(new_table, [
(1, 4, 'a', 1, 4, 'a'),
(2, 3, 'b', 2, 3, 'b'),
(None, 2, 'c', None, 2, 'c'),
(7, 9, 'z', None, None, None)
])
|
