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# -*- coding: utf-8 -*-
from __future__ import absolute_import, print_function, division
from tempfile import NamedTemporaryFile
import sqlite3
from petl.test.helpers import ieq
from petl.io.db import fromdb, todb, appenddb
def test_fromsqlite3():
# initial data
f = NamedTemporaryFile(delete=False)
f.close()
data = (('a', 1),
('b', 2),
('c', 2.0))
connection = sqlite3.connect(f.name)
c = connection.cursor()
c.execute('CREATE TABLE foobar (foo, bar)')
for row in data:
c.execute('INSERT INTO foobar VALUES (?, ?)', row)
connection.commit()
c.close()
connection.close()
# test the function
actual = fromdb(f.name, 'SELECT * FROM foobar')
expect = (('foo', 'bar'),
('a', 1),
('b', 2),
('c', 2.0))
ieq(expect, actual, cast=tuple)
ieq(expect, actual, cast=tuple) # verify can iterate twice
def test_fromsqlite3_connection():
# initial data
data = (('a', 1),
('b', 2),
('c', 2.0))
connection = sqlite3.connect(':memory:')
c = connection.cursor()
c.execute('CREATE TABLE foobar (foo, bar)')
for row in data:
c.execute('INSERT INTO foobar VALUES (?, ?)', row)
connection.commit()
c.close()
# test the function
actual = fromdb(connection, 'SELECT * FROM foobar')
expect = (('foo', 'bar'),
('a', 1),
('b', 2),
('c', 2.0))
ieq(expect, actual, cast=tuple)
ieq(expect, actual, cast=tuple) # verify can iterate twice
def test_fromsqlite3_withargs():
# initial data
data = (('a', 1),
('b', 2),
('c', 2.0))
connection = sqlite3.connect(':memory:')
c = connection.cursor()
c.execute('CREATE TABLE foobar (foo, bar)')
for row in data:
c.execute('INSERT INTO foobar VALUES (?, ?)', row)
connection.commit()
c.close()
# test the function
actual = fromdb(
connection,
'SELECT * FROM foobar WHERE bar > ? AND bar < ?',
(1, 3)
)
expect = (('foo', 'bar'),
('b', 2),
('c', 2.0))
ieq(expect, actual)
ieq(expect, actual) # verify can iterate twice
def test_tosqlite3_appendsqlite3():
# exercise function
table = (('foo', 'bar'),
('a', 1),
('b', 2),
('c', 2))
f = NamedTemporaryFile(delete=False)
f.close()
conn = sqlite3.connect(f.name)
conn.execute('CREATE TABLE foobar (foo TEXT, bar INT)')
conn.close()
todb(table, f.name, 'foobar')
# check what it did
conn = sqlite3.connect(f.name)
actual = conn.execute('SELECT * FROM foobar')
expect = (('a', 1),
('b', 2),
('c', 2))
ieq(expect, actual)
# check appending
table2 = (('foo', 'bar'),
('d', 7),
('e', 9),
('f', 1))
appenddb(table2, f.name, 'foobar')
# check what it did
conn = sqlite3.connect(f.name)
actual = conn.execute('SELECT * FROM foobar')
expect = (('a', 1),
('b', 2),
('c', 2),
('d', 7),
('e', 9),
('f', 1))
ieq(expect, actual)
def test_tosqlite3_appendsqlite3_connection():
conn = sqlite3.connect(':memory:')
conn.execute('CREATE TABLE foobar (foo TEXT, bar INT)')
# exercise function
table = (('foo', 'bar'),
('a', 1),
('b', 2),
('c', 2))
todb(table, conn, 'foobar')
# check what it did
actual = conn.execute('SELECT * FROM foobar')
expect = (('a', 1),
('b', 2),
('c', 2))
ieq(expect, actual)
# check appending
table2 = (('foo', 'bar'),
('d', 7),
('e', 9),
('f', 1))
appenddb(table2, conn, 'foobar')
# check what it did
actual = conn.execute('SELECT * FROM foobar')
expect = (('a', 1),
('b', 2),
('c', 2),
('d', 7),
('e', 9),
('f', 1))
ieq(expect, actual)
def test_tosqlite3_identifiers():
# exercise function
table = (('foo foo', 'bar.baz.spong`'),
('a', 1),
('b', 2),
('c', 2))
f = NamedTemporaryFile(delete=False)
f.close()
conn = sqlite3.connect(f.name)
conn.execute('CREATE TABLE "foo "" bar`" '
'("foo foo" TEXT, "bar.baz.spong`" INT)')
conn.close()
todb(table, f.name, 'foo " bar`')
# check what it did
conn = sqlite3.connect(f.name)
actual = conn.execute('SELECT * FROM `foo " bar```')
expect = (('a', 1),
('b', 2),
('c', 2))
ieq(expect, actual)
# TODO test uneven rows
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