Merge pull request #459 from bpicolo/docker_support

Docker hook support for pre-commit

tests/languages/docker_test.py

@@ -0,0 +1,15 @@
+from __future__ import absolute_import
+from __future__ import unicode_literals
+
+import mock
+
+from pre_commit.languages import docker
+from pre_commit.util import CalledProcessError
+
+
+def test_docker_is_running_process_error():
+    with mock.patch(
+        'pre_commit.languages.docker.cmd_output',
+        side_effect=CalledProcessError(*(None,) * 4)
+    ):
+        assert docker.docker_is_running() is False

tests/repository_test.py

@@ -29,6 +29,7 @@ from testing.fixtures import git_dir
 from testing.fixtures import make_config_from_repo
 from testing.fixtures import make_repo
 from testing.fixtures import modify_manifest
+from testing.util import skipif_cant_run_docker
 from testing.util import skipif_slowtests_false
 from testing.util import xfailif_no_pcre_support
 from testing.util import xfailif_windows_no_node
@@ -129,6 +130,29 @@ def test_versioned_python_hook(tempdir_factory, store):
     )
 
 
+@skipif_slowtests_false
+@skipif_cant_run_docker
+@pytest.mark.integration
+def test_run_a_docker_hook(tempdir_factory, store):
+    _test_hook_repo(
+        tempdir_factory, store, 'docker_hooks_repo',
+        'docker-hook',
+        ['Hello World from docker'], b'Hello World from docker\n',
+    )
+
+
+@skipif_slowtests_false
+@skipif_cant_run_docker
+@pytest.mark.integration
+def test_run_a_failing_docker_hook(tempdir_factory, store):
+    _test_hook_repo(
+        tempdir_factory, store, 'docker_hooks_repo',
+        'docker-hook-failing',
+        ['Hello World from docker'], b'',
+        expected_return_code=1
+    )
+
+
 @skipif_slowtests_false
 @xfailif_windows_no_node
 @pytest.mark.integration