"""
Determine when dev tests should be skipped by regular users.

Some tests are only intended to be tested during development right
before performing a release.  These do not test core functionality
of `cytoolz` and may be skipped.  These tests are only run if the
following conditions are true:

    - toolz is installed
    - toolz is the correct version
    - cytoolz is a release version
"""
import sys
import cytoolz

istest = lambda func: setattr(func, '__test__', True) or func
nottest = lambda func: setattr(func, '__test__', False) or func

try:
    import toolz
    do_toolz_tests = True
except ImportError:
    do_toolz_tests = False

if do_toolz_tests:
    do_toolz_tests = toolz.__version__.startswith(cytoolz.__toolz_version__)
    do_toolz_tests &= '+' not in cytoolz.__version__

# Decorator used to skip tests for developmental versions of CyToolz.
# Also, skip these tests on PyPy, which may handle docs differently.
if do_toolz_tests and sys.implementation.name != "pypy":
    dev_skip_test = istest
else:
    dev_skip_test = nottest