pytest_gitignore.py

import subprocess

import pytest


@pytest.mark.hookwrapper
def pytest_ignore_collect(path, config):
    outcome = yield  # use pytest's command line args, etc.
    if not outcome.get_result():
        # not ignored by the default hook

        if git_ignores_path(path):
            # don't force a False result:
            # another plugin might want to ignore this file.
            outcome.force_result(True)


def git_ignores_path(path):
    if path.basename == '.git':  # Ignore .git directory
        return True
    child = subprocess.Popen(['git', 'check-ignore', str(path)],
                             stdout=subprocess.PIPE,
                             stderr=subprocess.PIPE)
    output = child.communicate()[0]
    status = child.wait()
    # Possible return values: (via git help check-ignore)
    #    0: Yes, the file is ignored
    #    1: No, the file isn't ignored
    #  128: Fatal error, git can't tell us whether to ignore
    #
    # The latter happens a lot with python virtualenvs, since they have
    # symlinks and git gives up when you try to follow one.  But maybe you have
    # a test directory that you include with a symlink, who knows?  So we treat
    # the file as not-ignored.
    return status == 0