import os
import unittest
from datetime import datetime
from sqlalchemy.exc import IntegrityError
from dataset import connect
from dataset.util import DatasetException
from .sample_data import TEST_DATA, TEST_CITY_1
class DatabaseTestCase(unittest.TestCase):
def setUp(self):
self.old_db_url = os.environ.get('DATABASE_URL')
os.environ['DATABASE_URL'] = 'sqlite:///:memory:'
self.db = connect('sqlite:///:memory:')
self.tbl = self.db['weather']
for row in TEST_DATA:
self.tbl.insert(row)
def tearDown(self):
# ensure env variable was unset
if self.old_db_url is None:
del os.environ['DATABASE_URL']
else:
os.environ['DATABASE_URL'] = self.old_db_url
def test_valid_database_url(self):
assert self.db.url, os.environ['DATABASE_URL']
def test_database_url_query_string(self):
db = connect('sqlite:///:memory:/?cached_statements=1')
assert 'cached_statements' in db.url, db.url
def test_tables(self):
assert self.db.tables == ['weather'], self.db.tables
def test_create_table(self):
table = self.db['foo']
assert table.table.exists()
assert len(table.table.columns) == 1, table.table.columns
assert 'id' in table.table.c, table.table.c
def test_create_table_custom_id1(self):
pid = "string_id"
table = self.db.create_table("foo2", pid, 'String')
assert table.table.exists()
assert len(table.table.columns) == 1, table.table.columns
assert pid in table.table.c, table.table.c
table.insert({
'string_id': 'foobar'})
assert table.find_one(string_id = 'foobar')['string_id'] == 'foobar'
def test_create_table_custom_id2(self):
pid = "string_id"
table = self.db.create_table("foo3", pid, 'String(50)')
assert table.table.exists()
assert len(table.table.columns) == 1, table.table.columns
assert pid in table.table.c, table.table.c
table.insert({
'string_id': 'foobar'})
assert table.find_one(string_id = 'foobar')['string_id'] == 'foobar'
def test_create_table_custom_id3(self):
pid = "int_id"
table = self.db.create_table("foo4", primary_id = pid)
assert table.table.exists()
assert len(table.table.columns) == 1, table.table.columns
assert pid in table.table.c, table.table.c
table.insert({'int_id': 123})
table.insert({'int_id': 124})
assert table.find_one(int_id = 123)['int_id'] == 123
assert table.find_one(int_id = 124)['int_id'] == 124
self.assertRaises(IntegrityError, lambda: table.insert({'int_id': 123}))
def test_create_table_shorthand1(self):
pid = "int_id"
table = self.db['foo5', pid]
assert table.table.exists
assert len(table.table.columns) == 1, table.table.columns
assert pid in table.table.c, table.table.c
table.insert({'int_id': 123})
table.insert({'int_id': 124})
assert table.find_one(int_id = 123)['int_id'] == 123
assert table.find_one(int_id = 124)['int_id'] == 124
self.assertRaises(IntegrityError, lambda: table.insert({'int_id': 123}))
def test_create_table_shorthand2(self):
pid = "string_id"
table = self.db['foo6', pid, 'String']
assert table.table.exists
assert len(table.table.columns) == 1, table.table.columns
assert pid in table.table.c, table.table.c
table.insert({
'string_id': 'foobar'})
assert table.find_one(string_id = 'foobar')['string_id'] == 'foobar'
def test_create_table_shorthand3(self):
pid = "string_id"
table = self.db['foo7', pid, 'String(20)']
assert table.table.exists
assert len(table.table.columns) == 1, table.table.columns
assert pid in table.table.c, table.table.c
table.insert({
'string_id': 'foobar'})
assert table.find_one(string_id = 'foobar')['string_id'] == 'foobar'
def test_load_table(self):
tbl = self.db.load_table('weather')
assert tbl.table == self.tbl.table
def test_query(self):
r = self.db.query('SELECT COUNT(*) AS num FROM weather').next()
assert r['num'] == len(TEST_DATA), r
class TableTestCase(unittest.TestCase):
def setUp(self):
self.db = connect('sqlite:///:memory:')
self.tbl = self.db['weather']
for row in TEST_DATA:
self.tbl.insert(row)
def test_insert(self):
assert len(self.tbl) == len(TEST_DATA), len(self.tbl)
last_id = self.tbl.insert({
'date': datetime(2011, 1, 2),
'temperature': -10,
'place': 'Berlin'}
)
assert len(self.tbl) == len(TEST_DATA)+1, len(self.tbl)
assert self.tbl.find_one(id=last_id)['place'] == 'Berlin'
def test_upsert(self):
self.tbl.upsert({
'date': datetime(2011, 1, 2),
'temperature': -10,
'place': 'Berlin'},
['place']
)
assert len(self.tbl) == len(TEST_DATA)+1, len(self.tbl)
self.tbl.upsert({
'date': datetime(2011, 1, 2),
'temperature': -10,
'place': 'Berlin'},
['place']
)
assert len(self.tbl) == len(TEST_DATA)+1, len(self.tbl)
def test_upsert_all_key(self):
for i in range(0,2):
self.tbl.upsert({
'date': datetime(2011, 1, 2),
'temperature': -10,
'place': 'Berlin'},
['date', 'temperature', 'place']
)
def test_delete(self):
self.tbl.insert({
'date': datetime(2011, 1, 2),
'temperature': -10,
'place': 'Berlin'}
)
assert len(self.tbl) == len(TEST_DATA)+1, len(self.tbl)
self.tbl.delete(place='Berlin')
assert len(self.tbl) == len(TEST_DATA), len(self.tbl)
self.tbl.delete()
assert len(self.tbl) == 0, len(self.tbl)
def test_find_one(self):
self.tbl.insert({
'date': datetime(2011, 1, 2),
'temperature': -10,
'place': 'Berlin'}
)
d = self.tbl.find_one(place='Berlin')
assert d['temperature'] == -10, d
d = self.tbl.find_one(place='Atlantis')
assert d is None, d
def test_find(self):
ds = list(self.tbl.find(place=TEST_CITY_1))
assert len(ds) == 3, ds
ds = list(self.tbl.find(place=TEST_CITY_1, _limit=2))
assert len(ds) == 2, ds
def test_distinct(self):
x = list(self.tbl.distinct('place'))
assert len(x) == 2, x
x = list(self.tbl.distinct('place', 'date'))
assert len(x) == 6, x
def test_insert_many(self):
data = TEST_DATA * 5000
self.tbl.insert_many(data)
assert len(self.tbl) == len(data) + 6
def test_drop_warning(self):
assert self.tbl._is_dropped is False, 'table shouldn\'t be dropped yet'
self.tbl.drop()
assert self.tbl._is_dropped is True, 'table should be dropped now'
try:
list(self.tbl.all())
except DatasetException:
pass
else:
assert False, 'we should not reach else block, no exception raised!'
def test_columns(self):
cols = self.tbl.columns
assert isinstance(cols, set), 'columns should be a set'
assert len(cols) == 4, 'column count mismatch'
assert 'date' in cols and 'temperature' in cols and 'place' in cols
def test_iter(self):
c = 0
for row in self.tbl:
c += 1
assert c == len(self.tbl)
def test_update(self):
date = datetime(2011, 1, 2)
res = self.tbl.update({
'date': date,
'temperature': -10,
'place': TEST_CITY_1},
['place', 'date']
)
assert res, 'update should return True'
m = self.tbl.find_one(place=TEST_CITY_1, date=date)
assert m['temperature'] == -10, 'new temp. should be -10 but is %d' % m['temperature']
def test_create_column(self):
from sqlalchemy import FLOAT
tbl = self.tbl
tbl.create_column('foo', FLOAT)
assert 'foo' in tbl.table.c, tbl.table.c
assert FLOAT == type(tbl.table.c['foo'].type), tbl.table.c['foo'].type
assert 'foo' in tbl.columns, tbl.columns
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