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Description:

pytestdonde 1.1.0

pytest_donde
pytest_donde dumps per-test-item coverage and duration into a persistent record file and offers an API to access this record in your plugins or scripts.
details
create persistent record
python -m pytest --donde=/path/to/src

This creates a donde.json record file with the following information for every test item:

run duration (sec),
covered lines of code w.r.t. /path/to/src

by wrapping pytest-cov, evaluating its output, and putting this together with collected test item durations.
access record
from pytest_donde import Record
record = Record.from_file('donde.json')

A demo example (which is trivial, because it uses only durations, not coverage):
class PluginPreferFastest:

def __init__(self, path_input):
self.record = Record.from_file(path_input)

def pytest_collection_modifyitems(self, items):

def key(item):
try:
return self.record.nodeid_to_duration[item.nodeid]
except KeyError:
# test is unknown to the donde.json record,
# possibly it was skipped there or was added after the record was made
# we prefer it to run at the beginning
return 0.0

items[:] = sorted(items, key=key)

install
python -m pip install pytest-donde