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to simplify pyproject.toml change the remaining files
that aren't going to be typed on this first pass
(unless of course someone wants to type some of these)
to include # mypy: ignore-errors. for the moment, only a handful
of ORM modules are to have more type checking implemented.
It's important that ignore-errors is used and
not "# type: ignore", as in the latter case, mypy doesn't even
read the existing types in the file, which makes it impossible to
type any files that refer to those modules at all.
to simplify ongoing typing work use inline mypy config
for remaining files that are "done" for now, indicating the
level of type checking they currently have.
Change-Id: I98669c1a305c2f0adba85d10b5425541f3fe9533
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Implemented support for the test suite to run correctly under Pytest 7.
Previously, only Pytest 6.x was supported for Python 3, however the version
was not pinned on the upper bound in tox.ini. Pytest is not pinned in
tox.ini to be lower than version 8 so that SQLAlchemy versions released
with the current codebase will be able to be tested under tox without
changes to the environment. Much thanks to the Pytest developers for
their help with this issue.
Change-Id: I3b12166199be2b913ee16e78b3ebbff415654396
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References: #4600
Change-Id: I61e35bc93fe95610ae75b31c18a3282558cd4ffe
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There are still some SQLite / MySQL specific occurrences
of "master" but this is most of it.
Change-Id: I0144c992e2f0207777e20e058b63a11c031986b9
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To allow the "connection" pytest fixture and others work
correctly in conjunction with setup/teardown that expects
to be external to the transaction, remove and prevent any usage
of "xdist" style names that are hardcoded by pytest to run
inside of fixtures, even function level ones. Instead use
pytest autouse fixtures to implement our own
r"setup|teardown_test(?:_class)?" methods so that we can ensure
function-scoped fixtures are run within them. A new more
explicit flow is set up within plugin_base and pytestplugin
such that the order of setup/teardown steps, which there are now
many, is fully documented and controllable. New granularity
has been added to the test teardown phase to distinguish
between "end of the test" when lock-holding structures on
connections should be released to allow for table drops,
vs. "end of the test plus its teardown steps" when we can
perform final cleanup on connections and run assertions
that everything is closed out.
From there we can remove most of the defensive "tear down everything"
logic inside of engines which for many years would frequently dispose
of pools over and over again, creating for a broken and expensive
connection flow. A quick test shows that running test/sql/ against
a single Postgresql engine with the new approach uses 75% fewer new
connections, creating 42 new connections total, vs. 164 new
connections total with the previous system.
As part of this, the new fixtures metadata/connection/future_connection
have been integrated such that they can be combined together
effectively. The fixture_session(), provide_metadata() fixtures
have been improved, including that fixture_session() now strongly
references sessions which are explicitly torn down before
table drops occur afer a test.
Major changes have been made to the
ConnectionKiller such that it now features different "scopes" for
testing engines and will limit its cleanup to those testing
engines corresponding to end of test, end of test class, or
end of test session. The system by which it tracks DBAPI
connections has been reworked, is ultimately somewhat similar to
how it worked before but is organized more clearly along
with the proxy-tracking logic. A "testing_engine" fixture
is also added that works as a pytest fixture rather than a
standalone function. The connection cleanup logic should
now be very robust, as we now can use the same global
connection pools for the whole suite without ever disposing
them, while also running a query for PostgreSQL
locks remaining after every test and assert there are no open
transactions leaking between tests at all. Additional steps
are added that also accommodate for asyncio connections not
explicitly closed, as is the case for legacy sync-style
tests as well as the async tests themselves.
As always, hundreds of tests are further refined to use the
new fixtures where problems with loose connections were identified,
largely as a result of the new PostgreSQL assertions,
many more tests have moved from legacy patterns into the newest.
An unfortunate discovery during the creation of this system is that
autouse fixtures (as well as if they are set up by
@pytest.mark.usefixtures) are not usable at our current scale with pytest
4.6.11 running under Python 2. It's unclear if this is due
to the older version of pytest or how it implements itself for
Python 2, as well as if the issue is CPU slowness or just large
memory use, but collecting the full span of tests takes over
a minute for a single process when any autouse fixtures are in
place and on CI the jobs just time out after ten minutes.
So at the moment this patch also reinvents a small version of
"autouse" fixtures when py2k is running, which skips generating
the real fixture and instead uses two global pytest fixtures
(which don't seem to impact performance) to invoke the
"autouse" fixtures ourselves outside of pytest.
This will limit our ability to do more with fixtures
until we can remove py2k support.
py.test is still observed to be much slower in collection in the
4.6.11 version compared to modern 6.2 versions, so add support for new
TOX_POSTGRESQL_PY2K and TOX_MYSQL_PY2K environment variables that
will run the suite for fewer backends under Python 2. For Python 3
pin pytest to modern 6.2 versions where performance for collection
has been improved greatly.
Includes the following improvements:
Fixed bug in asyncio connection pool where ``asyncio.TimeoutError`` would
be raised rather than :class:`.exc.TimeoutError`. Also repaired the
:paramref:`_sa.create_engine.pool_timeout` parameter set to zero when using
the async engine, which previously would ignore the timeout and block
rather than timing out immediately as is the behavior with regular
:class:`.QueuePool`.
For asyncio the connection pool will now also not interact
at all with an asyncio connection whose ConnectionFairy is
being garbage collected; a warning that the connection was
not properly closed is emitted and the connection is discarded.
Within the test suite the ConnectionKiller is now maintaining
strong references to all DBAPI connections and ensuring they
are released when tests end, including those whose ConnectionFairy
proxies are GCed.
Identified cx_Oracle.stmtcachesize as a major factor in Oracle
test scalability issues, this can be reset on a per-test basis
rather than setting it to zero across the board. the addition
of this flag has resolved the long-standing oracle "two task"
error problem.
For SQL Server, changed the temp table style used by the
"suite" tests to be the double-pound-sign, i.e. global,
variety, which is much easier to test generically. There
are already reflection tests that are more finely tuned
to both styles of temp table within the mssql test
suite. Additionally, added an extra step to the
"dropfirst" mechanism for SQL Server that will remove
all foreign key constraints first as some issues were
observed when using this flag when multiple schemas
had not been torn down.
Identified and fixed two subtle failure modes in the
engine, when commit/rollback fails in a begin()
context manager, the connection is explicitly closed,
and when "initialize()" fails on the first new connection
of a dialect, the transactional state on that connection
is still rolled back.
Fixes: #5826
Fixes: #5827
Change-Id: Ib1d05cb8c7cf84f9a4bfd23df397dc23c9329bfe
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The test system has removed support for Nose, which is unmaintained for
several years and is producing warnings under Python 3. The test suite is
currently standardized on Pytest. Pull request courtesy Parth Shandilya.
Fixes: #4460
Closes: #4476
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/4476
Pull-request-sha: e857af9c7d07355e52841149ee2e5d4448409e1e
Change-Id: I76516fae1cf0eb58f2e9fc9f692e591e0fcf39a4
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Applied on top of a pure run of black -l 79 in
I7eda77fed3d8e73df84b3651fd6cfcfe858d4dc9, this set of changes
resolves all remaining flake8 conditions for those codes
we have enabled in setup.cfg.
Included are resolutions for all remaining flake8 issues
including shadowed builtins, long lines, import order, unused
imports, duplicate imports, and docstring issues.
Change-Id: I4f72d3ba1380dd601610ff80b8fb06a2aff8b0fe
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This is a straight reformat run using black as is, with no edits
applied at all.
The black run will format code consistently, however in
some cases that are prevalent in SQLAlchemy code it produces
too-long lines. The too-long lines will be resolved in the
following commit that will resolve all remaining flake8 issues
including shadowed builtins, long lines, import order, unused
imports, duplicate imports, and docstring issues.
Change-Id: I7eda77fed3d8e73df84b3651fd6cfcfe858d4dc9
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- reestablish the "bootstrap" system of loading the test runners
in testing/plugin; using the updated approach we just came up with for
alembic. Coverage should be fixed now when running either py.test or
nose. fixes #3196
- upgrade tox.ini and start using a .coveragerc file
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