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are pytest_sessionstart(session) and pytest_sessionfinish(session) valid hooks? They are not described in dev hook docs or latest hook docs
What is the difference between them and pytest_configure(config)/pytest_unconfigure(config)?
In docs it is said:
pytest_configure(config)called after command line options have been parsed. and all plugins
and initial conftest files been loaded.
and
pytest_unconfigure(config)called before test process is exited.
Session is the same, right?
Thanks!
The bad news is that the situation with sessionstart/configure is not very well specified. Sessionstart in particular is not much documented because the semantics differ if one is in the xdist/distribution case or not. One can distinguish these situations but it’s all a bit too complicated.
The good news is that pytest-2.3 should make things easier. If you define a @fixture with scope="session" you can implement a fixture that is called once per process within which test execute.
For distributed testing, this means once per test slave. For single-process testing, it means once for the whole test run. In either case, if you do a "–collectonly" run, or "-h" or other options that do not involve the running of tests, then fixture functions will not execute at all.
Hope this clarifies.