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ignore self-container when in docker-in-docker

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This commit is contained in:
Anthony Sottile 2021-08-03 13:08:07 -07:00
parent a4444f1996
commit 5d1cac64c1
2 changed files with 14 additions and 1 deletions
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8
tests/languages/docker_test.py
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@ -8,6 +8,7 @@ from unittest import mock
import pytest
from pre_commit.languages import docker
from pre_commit.util import CalledProcessError
DOCKER_CGROUP_EXAMPLE = b'''\
12:hugetlb:/docker/c33988ec7651ebc867cb24755eaf637a6734088bc7eef59d5799293a9e5450f7
@ -171,3 +172,10 @@ def test_get_docker_path_in_docker_windows(in_docker):
path = r'c:\folder\test\something'
expected = r'c:\users\user\test\something'
assert docker._get_docker_path(path) == expected
def test_get_docker_path_in_docker_docker_in_docker(in_docker):
# won't be able to discover "self" container in true docker-in-docker
err = CalledProcessError(1, (), 0, b'', b'')
with mock.patch.object(docker, 'cmd_output_b', side_effect=err):
assert docker._get_docker_path('/project') == '/project'