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import io
import os
import sys
import unittest
from textwrap import dedent
from unittest.mock import patch
from sqlalchemy.exc import IntegrityError, OperationalError
from csvkit.utilities.csvsql import CSVSQL, launch_new_instance
from csvkit.utilities.sql2csv import SQL2CSV
from tests.utils import CSVKitTestCase, EmptyFileTests, stdin_as_string
class TestCSVSQL(CSVKitTestCase, EmptyFileTests):
Utility = CSVSQL
def test_launch_new_instance(self):
with patch.object(sys, 'argv', [self.Utility.__name__.lower(), 'examples/dummy.csv']):
launch_new_instance()
def test_options(self):
for args, message in (
(
['--db', 'sqlite:///:memory:', '--dialect', 'sqlite'],
'The --dialect option is only valid when neither --db nor --query are specified.',
),
(
['--insert'],
'The --insert option is only valid when either --db or --query is specified.',
),
(
['--db', 'sqlite:///:memory:', '--insert', '--no-create', '--overwrite'],
'The --overwrite option is only valid if --no-create is not specified.',
),
(
['--db', 'sqlite:///:memory:', '--insert', '--no-create', '--create-if-not-exists'],
'The --no-create and --create-if-not-exists options are mutually exclusive.',
),
):
with self.subTest(args=args):
self.assertError(launch_new_instance, args, message)
def test_insert_options(self):
for args in (
['--no-create'],
['--create-if-not-exists'],
['--overwrite'],
['--before-insert'],
['--after-insert'],
['--chunk-size', '1'],
):
with self.subTest(args=args):
self.assertError(
launch_new_instance,
args,
f'The {args[0]} option is only valid if --insert is also specified.'
)
def setUp(self):
self.db_file = 'foo.db'
def tearDown(self):
if os.path.exists(self.db_file):
os.remove(self.db_file)
@unittest.skipIf(os.name != 'nt', 'Windows only')
def test_glob(self):
sql = self.get_output(['examples/dummy?.csv'])
self.assertEqual(sql.replace('\t', ' '), dedent('''\
CREATE TABLE dummy2 (
a BOOLEAN NOT NULL,
b DECIMAL NOT NULL,
c DECIMAL NOT NULL
);
CREATE TABLE dummy3 (
a BOOLEAN NOT NULL,
b DECIMAL NOT NULL,
c DECIMAL NOT NULL
);
''')) # noqa: W291
def test_create_table(self):
sql = self.get_output(['--tables', 'foo', 'examples/testfixed_converted.csv'])
self.assertEqual(sql.replace('\t', ' '), dedent('''\
CREATE TABLE foo (
text VARCHAR NOT NULL,
date DATE,
integer DECIMAL,
boolean BOOLEAN,
float DECIMAL,
time DATETIME,
datetime TIMESTAMP,
empty_column BOOLEAN
);
''')) # noqa: W291
def test_no_blanks(self):
sql = self.get_output(['--tables', 'foo', 'examples/blanks.csv'])
self.assertEqual(sql.replace('\t', ' '), dedent('''\
CREATE TABLE foo (
a BOOLEAN,
b BOOLEAN,
c BOOLEAN,
d BOOLEAN,
e BOOLEAN,
f BOOLEAN
);
''')) # noqa: W291
def test_blanks(self):
sql = self.get_output(['--tables', 'foo', '--blanks', 'examples/blanks.csv'])
self.assertEqual(sql.replace('\t', ' '), dedent('''\
CREATE TABLE foo (
a VARCHAR NOT NULL,
b VARCHAR NOT NULL,
c VARCHAR NOT NULL,
d VARCHAR NOT NULL,
e VARCHAR NOT NULL,
f VARCHAR NOT NULL
);
''')) # noqa: W291
def test_no_inference(self):
sql = self.get_output(['--tables', 'foo', '--no-inference', 'examples/testfixed_converted.csv'])
self.assertEqual(sql.replace('\t', ' '), dedent('''\
CREATE TABLE foo (
text VARCHAR NOT NULL,
date VARCHAR,
integer VARCHAR,
boolean VARCHAR,
float VARCHAR,
time VARCHAR,
datetime VARCHAR,
empty_column VARCHAR
);
''')) # noqa: W291
def test_no_header_row(self):
sql = self.get_output(['--tables', 'foo', '--no-header-row', 'examples/no_header_row.csv'])
self.assertEqual(sql.replace('\t', ' '), dedent('''\
CREATE TABLE foo (
a BOOLEAN NOT NULL,
b DECIMAL NOT NULL,
c DECIMAL NOT NULL
);
''')) # noqa: W291
def test_linenumbers(self):
sql = self.get_output(['--tables', 'foo', '--linenumbers', 'examples/dummy.csv'])
self.assertEqual(sql.replace('\t', ' '), dedent('''\
CREATE TABLE foo (
a BOOLEAN NOT NULL,
b DECIMAL NOT NULL,
c DECIMAL NOT NULL
);
''')) # noqa: W291
def test_stdin(self):
input_file = io.BytesIO(b'a,b,c\n4,2,3\n')
with stdin_as_string(input_file):
sql = self.get_output(['--tables', 'foo'])
self.assertEqual(sql.replace('\t', ' '), dedent('''\
CREATE TABLE foo (
a DECIMAL NOT NULL,
b DECIMAL NOT NULL,
c DECIMAL NOT NULL
);
''')) # noqa: W291
input_file.close()
def test_stdin_and_filename(self):
input_file = io.BytesIO(b'a,b,c\n1,2,3\n')
with stdin_as_string(input_file):
sql = self.get_output(['-', 'examples/dummy.csv'])
self.assertTrue('CREATE TABLE stdin' in sql)
self.assertTrue('CREATE TABLE dummy' in sql)
input_file.close()
def test_query(self):
input_file = io.BytesIO(b'a,b,c\n1,2,3\n')
with stdin_as_string(input_file):
sql = self.get_output(['--query', 'SELECT m.usda_id, avg(i.sepal_length) AS mean_sepal_length FROM iris '
'AS i JOIN irismeta AS m ON (i.species = m.species) GROUP BY m.species',
'examples/iris.csv', 'examples/irismeta.csv'])
self.assertTrue('usda_id,mean_sepal_length' in sql)
self.assertTrue('IRSE,5.00' in sql)
self.assertTrue('IRVE2,5.936' in sql)
self.assertTrue('IRVI,6.58' in sql)
input_file.close()
def test_query_empty(self):
input_file = io.BytesIO()
with stdin_as_string(input_file):
output = self.get_output(['--query', 'SELECT 1'])
self.assertEqual(output, '1\n1\n')
input_file.close()
def test_query_text(self):
sql = self.get_output(['--query', 'SELECT text FROM testfixed_converted WHERE text LIKE "Chicago%"',
'examples/testfixed_converted.csv'])
self.assertEqual(sql,
"text\n"
"Chicago Reader\n"
"Chicago Sun-Times\n"
"Chicago Tribune\n")
def test_query_file(self):
sql = self.get_output(['--query', 'examples/test_query.sql', 'examples/testfixed_converted.csv'])
self.assertEqual(sql,
"question,text\n"
"36,©\n")
def test_query_update(self):
sql = self.get_output(['--query', 'UPDATE dummy SET a=10 WHERE a=1', '--no-inference', 'examples/dummy.csv'])
self.assertEqual(sql, '')
def test_before_after_insert(self):
self.get_output(['--db', 'sqlite:///' + self.db_file, '--insert', 'examples/dummy.csv', '--before-insert',
'SELECT 1; CREATE TABLE foobar (date DATE)', '--after-insert',
'INSERT INTO dummy VALUES (0, 5, 6)'])
output_file = io.StringIO()
utility = SQL2CSV(['--db', 'sqlite:///' + self.db_file, '--query', 'SELECT * FROM foobar'], output_file)
utility.run()
output = output_file.getvalue()
output_file.close()
self.assertEqual(output, 'date\n')
output_file = io.StringIO()
utility = SQL2CSV(['--db', 'sqlite:///' + self.db_file, '--query', 'SELECT * FROM dummy'], output_file)
utility.run()
output = output_file.getvalue()
output_file.close()
self.assertEqual(output, 'a,b,c\n1,2.0,3.0\n0,5.0,6.0\n')
def test_no_prefix_unique_constraint(self):
self.get_output(['--db', 'sqlite:///' + self.db_file, '--insert',
'examples/dummy.csv', '--unique-constraint', 'a'])
with self.assertRaises(IntegrityError):
self.get_output(['--db', 'sqlite:///' + self.db_file, '--insert', 'examples/dummy.csv', '--no-create'])
def test_prefix_unique_constraint(self):
self.get_output(['--db', 'sqlite:///' + self.db_file, '--insert',
'examples/dummy.csv', '--unique-constraint', 'a'])
self.get_output(['--db', 'sqlite:///' + self.db_file, '--insert',
'examples/dummy.csv', '--no-create', '--prefix', 'OR IGNORE'])
def test_no_create_if_not_exists(self):
self.get_output(['--db', 'sqlite:///' + self.db_file, '--insert', '--tables', 'foo', 'examples/foo1.csv'])
with self.assertRaises(OperationalError):
self.get_output(['--db', 'sqlite:///' + self.db_file, '--insert', '--tables', 'foo', 'examples/foo2.csv'])
def test_create_if_not_exists(self):
self.get_output(['--db', 'sqlite:///' + self.db_file, '--insert', '--tables', 'foo', 'examples/foo1.csv'])
self.get_output(['--db', 'sqlite:///' + self.db_file, '--insert', '--tables',
'foo', 'examples/foo2.csv', '--create-if-not-exists'])
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