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import datetime
import os
import time
import pytest
from pg8000.dbapi import (
BINARY,
Binary,
Date,
DateFromTicks,
Time,
TimeFromTicks,
Timestamp,
TimestampFromTicks,
)
@pytest.fixture
def has_tzset():
# Neither Windows nor Jython 2.5.3 have a time.tzset() so skip
if hasattr(time, "tzset"):
os.environ["TZ"] = "UTC"
time.tzset()
return True
return False
# DBAPI compatible interface tests
@pytest.fixture
def db_table(con, has_tzset):
c = con.cursor()
c.execute(
"CREATE TEMPORARY TABLE t1 "
"(f1 int primary key, f2 int not null, f3 varchar(50) null) "
"ON COMMIT DROP"
)
c.execute("INSERT INTO t1 (f1, f2, f3) VALUES (%s, %s, %s)", (1, 1, None))
c.execute("INSERT INTO t1 (f1, f2, f3) VALUES (%s, %s, %s)", (2, 10, None))
c.execute("INSERT INTO t1 (f1, f2, f3) VALUES (%s, %s, %s)", (3, 100, None))
c.execute("INSERT INTO t1 (f1, f2, f3) VALUES (%s, %s, %s)", (4, 1000, None))
c.execute("INSERT INTO t1 (f1, f2, f3) VALUES (%s, %s, %s)", (5, 10000, None))
return con
def test_parallel_queries(db_table):
c1 = db_table.cursor()
c2 = db_table.cursor()
c1.execute("SELECT f1, f2, f3 FROM t1")
while 1:
row = c1.fetchone()
if row is None:
break
f1, f2, f3 = row
c2.execute("SELECT f1, f2, f3 FROM t1 WHERE f1 > %s", (f1,))
while 1:
row = c2.fetchone()
if row is None:
break
f1, f2, f3 = row
def test_qmark(mocker, db_table):
mocker.patch("pg8000.dbapi.paramstyle", "qmark")
c1 = db_table.cursor()
c1.execute("SELECT f1, f2, f3 FROM t1 WHERE f1 > ?", (3,))
while 1:
row = c1.fetchone()
if row is None:
break
f1, f2, f3 = row
def test_numeric(mocker, db_table):
mocker.patch("pg8000.dbapi.paramstyle", "numeric")
c1 = db_table.cursor()
c1.execute("SELECT f1, f2, f3 FROM t1 WHERE f1 > :1", (3,))
while 1:
row = c1.fetchone()
if row is None:
break
f1, f2, f3 = row
def test_named(mocker, db_table):
mocker.patch("pg8000.dbapi.paramstyle", "named")
c1 = db_table.cursor()
c1.execute("SELECT f1, f2, f3 FROM t1 WHERE f1 > :f1", {"f1": 3})
while 1:
row = c1.fetchone()
if row is None:
break
f1, f2, f3 = row
def test_format(mocker, db_table):
mocker.patch("pg8000.dbapi.paramstyle", "format")
c1 = db_table.cursor()
c1.execute("SELECT f1, f2, f3 FROM t1 WHERE f1 > %s", (3,))
while 1:
row = c1.fetchone()
if row is None:
break
f1, f2, f3 = row
def test_pyformat(mocker, db_table):
mocker.patch("pg8000.dbapi.paramstyle", "pyformat")
c1 = db_table.cursor()
c1.execute("SELECT f1, f2, f3 FROM t1 WHERE f1 > %(f1)s", {"f1": 3})
while 1:
row = c1.fetchone()
if row is None:
break
f1, f2, f3 = row
def test_arraysize(db_table):
c1 = db_table.cursor()
c1.arraysize = 3
c1.execute("SELECT * FROM t1")
retval = c1.fetchmany()
assert len(retval) == c1.arraysize
def test_date():
val = Date(2001, 2, 3)
assert val == datetime.date(2001, 2, 3)
def test_time():
val = Time(4, 5, 6)
assert val == datetime.time(4, 5, 6)
def test_timestamp():
val = Timestamp(2001, 2, 3, 4, 5, 6)
assert val == datetime.datetime(2001, 2, 3, 4, 5, 6)
def test_date_from_ticks(has_tzset):
if has_tzset:
val = DateFromTicks(1173804319)
assert val == datetime.date(2007, 3, 13)
def testTimeFromTicks(has_tzset):
if has_tzset:
val = TimeFromTicks(1173804319)
assert val == datetime.time(16, 45, 19)
def test_timestamp_from_ticks(has_tzset):
if has_tzset:
val = TimestampFromTicks(1173804319)
assert val == datetime.datetime(2007, 3, 13, 16, 45, 19)
def test_binary():
v = Binary(b"\x00\x01\x02\x03\x02\x01\x00")
assert v == b"\x00\x01\x02\x03\x02\x01\x00"
assert isinstance(v, BINARY)
def test_row_count(db_table):
c1 = db_table.cursor()
c1.execute("SELECT * FROM t1")
assert 5 == c1.rowcount
c1.execute("UPDATE t1 SET f3 = %s WHERE f2 > 101", ("Hello!",))
assert 2 == c1.rowcount
c1.execute("DELETE FROM t1")
assert 5 == c1.rowcount
def test_fetch_many(db_table):
cursor = db_table.cursor()
cursor.arraysize = 2
cursor.execute("SELECT * FROM t1")
assert 2 == len(cursor.fetchmany())
assert 2 == len(cursor.fetchmany())
assert 1 == len(cursor.fetchmany())
assert 0 == len(cursor.fetchmany())
def test_iterator(db_table):
cursor = db_table.cursor()
cursor.execute("SELECT * FROM t1 ORDER BY f1")
f1 = 0
for row in cursor.fetchall():
next_f1 = row[0]
assert next_f1 > f1
f1 = next_f1
# Vacuum can't be run inside a transaction, so we need to turn
# autocommit on.
def test_vacuum(con):
con.autocommit = True
cursor = con.cursor()
cursor.execute("vacuum")
def test_prepared_statement(con):
cursor = con.cursor()
cursor.execute("PREPARE gen_series AS SELECT generate_series(1, 10);")
cursor.execute("EXECUTE gen_series")
def test_cursor_type(cursor):
assert str(type(cursor)) == "<class 'pg8000.dbapi.Cursor'>"
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