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from sqlalchemy import bindparam
from sqlalchemy import Column
from sqlalchemy import Integer
from sqlalchemy import MetaData
from sqlalchemy import Sequence
from sqlalchemy import String
from sqlalchemy import Table
from sqlalchemy import testing
from sqlalchemy import text
from sqlalchemy.testing import AssertsExecutionResults
from sqlalchemy.testing import eq_
from sqlalchemy.testing import fixtures
class FoundRowsTest(fixtures.TestBase, AssertsExecutionResults):
"""tests rowcount functionality"""
__requires__ = ("sane_rowcount",)
__backend__ = True
@classmethod
def setup_class(cls):
global employees_table, metadata
metadata = MetaData(testing.db)
employees_table = Table(
"employees",
metadata,
Column(
"employee_id",
Integer,
Sequence("employee_id_seq", optional=True),
primary_key=True,
),
Column("name", String(50)),
Column("department", String(1)),
)
metadata.create_all()
def setup(self):
global data
data = [
("Angela", "A"),
("Andrew", "A"),
("Anand", "A"),
("Bob", "B"),
("Bobette", "B"),
("Buffy", "B"),
("Charlie", "C"),
("Cynthia", "C"),
("Chris", "C"),
]
i = employees_table.insert()
i.execute(*[{"name": n, "department": d} for n, d in data])
def teardown(self):
employees_table.delete().execute()
@classmethod
def teardown_class(cls):
metadata.drop_all()
def test_basic(self):
s = employees_table.select()
r = s.execute().fetchall()
assert len(r) == len(data)
def test_update_rowcount1(self):
# WHERE matches 3, 3 rows changed
department = employees_table.c.department
r = employees_table.update(department == "C").execute(department="Z")
assert r.rowcount == 3
def test_update_rowcount2(self):
# WHERE matches 3, 0 rows changed
department = employees_table.c.department
r = employees_table.update(department == "C").execute(department="C")
assert r.rowcount == 3
@testing.skip_if(
testing.requires.oracle5x, "unknown DBAPI error fixed in later version"
)
@testing.requires.sane_rowcount_w_returning
def test_update_rowcount_return_defaults(self):
department = employees_table.c.department
stmt = (
employees_table.update(department == "C")
.values(name=employees_table.c.department + "Z")
.return_defaults()
)
r = stmt.execute()
assert r.rowcount == 3
def test_raw_sql_rowcount(self):
# test issue #3622, make sure eager rowcount is called for text
with testing.db.connect() as conn:
result = conn.execute(
"update employees set department='Z' where department='C'"
)
eq_(result.rowcount, 3)
def test_text_rowcount(self):
# test issue #3622, make sure eager rowcount is called for text
with testing.db.connect() as conn:
result = conn.execute(
text(
"update employees set department='Z' "
"where department='C'"
)
)
eq_(result.rowcount, 3)
def test_delete_rowcount(self):
# WHERE matches 3, 3 rows deleted
department = employees_table.c.department
r = employees_table.delete(department == "C").execute()
assert r.rowcount == 3
@testing.requires.sane_multi_rowcount
def test_multi_update_rowcount(self):
stmt = (
employees_table.update()
.where(employees_table.c.name == bindparam("emp_name"))
.values(department="C")
)
r = testing.db.execute(
stmt,
[
{"emp_name": "Bob"},
{"emp_name": "Cynthia"},
{"emp_name": "nonexistent"},
],
)
eq_(r.rowcount, 2)
@testing.requires.sane_multi_rowcount
def test_multi_delete_rowcount(self):
stmt = employees_table.delete().where(
employees_table.c.name == bindparam("emp_name")
)
r = testing.db.execute(
stmt,
[
{"emp_name": "Bob"},
{"emp_name": "Cynthia"},
{"emp_name": "nonexistent"},
],
)
eq_(r.rowcount, 2)
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