Merge pull request #151 from pre-commit/dont_dict_pre_commit_config

Allow multiple hooks with same id in .pre-commit-config.yaml

.coveragerc

@@ -7,6 +7,8 @@ omit =
     /usr/*
     */tmp*
     setup.py
+    # Don't complain if non-runnable code isn't run
+    */__main__.py
 
 [report]
 exclude_lines =

pre_commit/commands/autoupdate.py

@@ -43,7 +43,7 @@ def _update_repository(repo_config, runner):
     new_repo = Repository.create(new_config, runner.store)
 
     # See if any of our hooks were deleted with the new commits
-    hooks = set(repo.hooks.keys())
+    hooks = set(hook_id for hook_id, _ in repo.hooks)
     hooks_missing = hooks - (hooks & set(new_repo.manifest.hooks.keys()))
     if hooks_missing:
         raise RepositoryCannotBeUpdatedError(

pre_commit/commands/run.py

@@ -47,7 +47,7 @@ def _print_user_skipped(hook, write, args):
     ))
 
 
-def _run_single_hook(runner, repository, hook_id, args, write, skips=set()):
+def _run_single_hook(runner, repository, hook, args, write, skips=set()):
     if args.all_files:
         get_filenames = git.get_all_files_matching
     elif git.is_in_merge_conflict():
@@ -55,10 +55,8 @@ def _run_single_hook(runner, repository, hook_id, args, write, skips=set()):
     else:
         get_filenames = git.get_staged_files_matching
 
-    hook = repository.hooks[hook_id]
-
     filenames = get_filenames(hook['files'], hook['exclude'])
-    if hook_id in skips:
+    if hook['id'] in skips:
         _print_user_skipped(hook, write, args)
         return 0
     elif not filenames:
@@ -70,9 +68,9 @@ def _run_single_hook(runner, repository, hook_id, args, write, skips=set()):
     write(get_hook_message(_hook_msg_start(hook, args.verbose), end_len=6))
     sys.stdout.flush()
 
-    retcode, stdout, stderr = repository.run_hook(hook_id, filenames)
+    retcode, stdout, stderr = repository.run_hook(hook, filenames)
 
-    if retcode != repository.hooks[hook_id]['expected_return_value']:
+    if retcode != hook['expected_return_value']:
         retcode = 1
         print_color = color.RED
         pass_fail = 'Failed'
@@ -101,9 +99,9 @@ def _run_hooks(runner, args, write, environ):
     skips = _get_skips(environ)
 
     for repo in runner.repositories:
-        for hook_id in repo.hooks:
+        for _, hook in repo.hooks:
             retval |= _run_single_hook(
-                runner, repo, hook_id, args, write, skips=skips,
+                runner, repo, hook, args, write, skips=skips,
             )
 
     return retval
@@ -112,8 +110,11 @@ def _run_hooks(runner, args, write, environ):
 def _run_hook(runner, args, write):
     hook_id = args.hook
     for repo in runner.repositories:
-        if hook_id in repo.hooks:
-            return _run_single_hook(runner, repo, hook_id, args, write=write)
+        for hook_id_in_repo, hook in repo.hooks:
+            if hook_id == hook_id_in_repo:
+                return _run_single_hook(
+                    runner, repo, hook, args, write=write,
+                )
     else:
         write('No hook with id `{0}`\n'.format(hook_id))
         return 1

pre_commit/repository.py

@@ -4,7 +4,6 @@ from cached_property import cached_property
 
 from pre_commit.languages.all import languages
 from pre_commit.manifest import Manifest
-from pre_commit.ordereddict import OrderedDict
 from pre_commit.prefixed_command_runner import PrefixedCommandRunner
 
 
@@ -33,13 +32,13 @@ class Repository(object):
     def languages(self):
         return set(
             (hook['language'], hook['language_version'])
-            for hook in self.hooks.values()
+            for _, hook in self.hooks
         )
 
     @cached_property
     def hooks(self):
         # TODO: merging in manifest dicts is a smell imo
-        return OrderedDict(
+        return tuple(
             (hook['id'], dict(self.manifest.hooks[hook['id']], **hook))
             for hook in self.repo_config['hooks']
         )
@@ -71,15 +70,14 @@ class Repository(object):
                 continue
             language.install_environment(self.cmd_runner, language_version)
 
-    def run_hook(self, hook_id, file_args):
+    def run_hook(self, hook, file_args):
         """Run a hook.
 
         Args:
-            hook_id - Id of the hook
+            hook - Hook dictionary
             file_args - List of files to run
         """
         self.require_installed()
-        hook = self.hooks[hook_id]
         return languages[hook['language']].run_hook(
             self.cmd_runner, hook, file_args,
         )

tests/commands/run_test.py

@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+import io
 import mock
 import os
 import os.path
@@ -205,7 +206,22 @@ def test_hook_id_not_in_non_verbose_output(
 
 
 def test_hook_id_in_verbose_output(
-        repo_with_passing_hook, mock_out_store_directory
+        repo_with_passing_hook, mock_out_store_directory,
 ):
     ret, printed = _do_run(repo_with_passing_hook, _get_opts(verbose=True))
     assert '[bash_hook] Bash hook' in printed
+
+
+def test_multiple_hooks_same_id(
+        repo_with_passing_hook, mock_out_store_directory,
+):
+    with local.cwd(repo_with_passing_hook):
+        # Add bash hook on there again
+        with io.open('.pre-commit-config.yaml', 'a+') as config_file:
+            config_file.write('    - id: bash_hook\n')
+        local['git']('add', '.pre-commit-config.yaml')
+        stage_a_file()
+
+    ret, output = _do_run(repo_with_passing_hook, _get_opts())
+    assert ret == 0
+    assert output.count('Bash hook') == 2

tests/repository_test.py

@@ -29,7 +29,10 @@ def _test_hook_repo(
     path = make_repo(tmpdir_factory, repo_path)
     config = make_config_from_repo(path)
     repo = Repository.create(config, store)
-    ret = repo.run_hook(hook_id, args)
+    hook_dict = [
+        hook for repo_hook_id, hook in repo.hooks if repo_hook_id == hook_id
+    ][0]
+    ret = repo.run_hook(hook_dict, args)
     assert ret[0] == expected_return_code
     assert ret[1] == expected
 
@@ -261,11 +264,11 @@ def test_config_overrides_repo_specifics(tmpdir_factory, store):
     config = make_config_from_repo(path)
 
     repo = Repository.create(config, store)
-    assert repo.hooks['bash_hook']['files'] == ''
+    assert repo.hooks[0][1]['files'] == ''
     # Set the file regex to something else
     config['hooks'][0]['files'] = '\\.sh$'
     repo = Repository.create(config, store)
-    assert repo.hooks['bash_hook']['files'] == '\\.sh$'
+    assert repo.hooks[0][1]['files'] == '\\.sh$'
 
 
 def _create_repo_with_tags(tmpdir_factory, src, tag):
@@ -286,13 +289,13 @@ def test_tags_on_repositories(in_tmpdir, tmpdir_factory, store):
     repo_1 = Repository.create(
         make_config_from_repo(git_dir_1, sha=tag), store,
     )
-    ret = repo_1.run_hook('prints_cwd', ['-L'])
+    ret = repo_1.run_hook(repo_1.hooks[0][1], ['-L'])
     assert ret[0] == 0
     assert ret[1].strip() == in_tmpdir
 
     repo_2 = Repository.create(
         make_config_from_repo(git_dir_2, sha=tag), store,
     )
-    ret = repo_2.run_hook('bash_hook', ['bar'])
+    ret = repo_2.run_hook(repo_2.hooks[0][1], ['bar'])
     assert ret[0] == 0
     assert ret[1] == 'bar\nHello World\n'