Merging upstream version 2.3.0.

Signed-off-by: Daniel Baumann <daniel@debian.org>

tests/color_test.py

@@ -29,26 +29,26 @@ def test_use_color_always():
 
 
 def test_use_color_no_tty():
-    with mock.patch.object(sys.stdout, 'isatty', return_value=False):
+    with mock.patch.object(sys.stderr, 'isatty', return_value=False):
         assert use_color('auto') is False
 
 
 def test_use_color_tty_with_color_support():
-    with mock.patch.object(sys.stdout, 'isatty', return_value=True):
+    with mock.patch.object(sys.stderr, 'isatty', return_value=True):
         with mock.patch('pre_commit.color.terminal_supports_color', True):
             with envcontext.envcontext((('TERM', envcontext.UNSET),)):
                 assert use_color('auto') is True
 
 
 def test_use_color_tty_without_color_support():
-    with mock.patch.object(sys.stdout, 'isatty', return_value=True):
+    with mock.patch.object(sys.stderr, 'isatty', return_value=True):
         with mock.patch('pre_commit.color.terminal_supports_color', False):
             with envcontext.envcontext((('TERM', envcontext.UNSET),)):
                 assert use_color('auto') is False
 
 
 def test_use_color_dumb_term():
-    with mock.patch.object(sys.stdout, 'isatty', return_value=True):
+    with mock.patch.object(sys.stderr, 'isatty', return_value=True):
         with mock.patch('pre_commit.color.terminal_supports_color', True):
             with envcontext.envcontext((('TERM', 'dumb'),)):
                 assert use_color('auto') is False

tests/commands/autoupdate_test.py

@@ -263,6 +263,45 @@ def test_does_not_reformat(tmpdir, out_of_date, store):
     assert cfg.read() == expected
 
 
+def test_does_not_change_mixed_endlines_read(up_to_date, tmpdir, store):
+    fmt = (
+        'repos:\n'
+        '-   repo: {}\n'
+        '    rev: {}  # definitely the version I want!\r\n'
+        '    hooks:\r\n'
+        '    -   id: foo\n'
+        '        # These args are because reasons!\r\n'
+        '        args: [foo, bar, baz]\r\n'
+    )
+    cfg = tmpdir.join(C.CONFIG_FILE)
+
+    expected = fmt.format(up_to_date, git.head_rev(up_to_date)).encode()
+    cfg.write_binary(expected)
+
+    assert autoupdate(str(cfg), store, freeze=False, tags_only=False) == 0
+    assert cfg.read_binary() == expected
+
+
+def test_does_not_change_mixed_endlines_write(tmpdir, out_of_date, store):
+    fmt = (
+        'repos:\n'
+        '-   repo: {}\n'
+        '    rev: {}  # definitely the version I want!\r\n'
+        '    hooks:\r\n'
+        '    -   id: foo\n'
+        '        # These args are because reasons!\r\n'
+        '        args: [foo, bar, baz]\r\n'
+    )
+    cfg = tmpdir.join(C.CONFIG_FILE)
+    cfg.write_binary(
+        fmt.format(out_of_date.path, out_of_date.original_rev).encode(),
+    )
+
+    assert autoupdate(str(cfg), store, freeze=False, tags_only=False) == 0
+    expected = fmt.format(out_of_date.path, out_of_date.head_rev).encode()
+    assert cfg.read_binary() == expected
+
+
 def test_loses_formatting_when_not_detectable(out_of_date, store, tmpdir):
     """A best-effort attempt is made at updating rev without rewriting
     formatting.  When the original formatting cannot be detected, this

tests/commands/hook_impl_test.py

@@ -89,6 +89,51 @@ def test_run_legacy_recursive(tmpdir):
             call()
 
 
+@pytest.mark.parametrize(
+    ('hook_type', 'args'),
+    (
+        ('pre-commit', []),
+        ('pre-merge-commit', []),
+        ('pre-push', ['branch_name', 'remote_name']),
+        ('commit-msg', ['.git/COMMIT_EDITMSG']),
+        ('post-checkout', ['old_head', 'new_head', '1']),
+        # multiple choices for commit-editmsg
+        ('prepare-commit-msg', ['.git/COMMIT_EDITMSG']),
+        ('prepare-commit-msg', ['.git/COMMIT_EDITMSG', 'message']),
+        ('prepare-commit-msg', ['.git/COMMIT_EDITMSG', 'commit', 'deadbeef']),
+    ),
+)
+def test_check_args_length_ok(hook_type, args):
+    hook_impl._check_args_length(hook_type, args)
+
+
+def test_check_args_length_error_too_many_plural():
+    with pytest.raises(SystemExit) as excinfo:
+        hook_impl._check_args_length('pre-commit', ['run', '--all-files'])
+    msg, = excinfo.value.args
+    assert msg == (
+        'hook-impl for pre-commit expected 0 arguments but got 2: '
+        "['run', '--all-files']"
+    )
+
+
+def test_check_args_length_error_too_many_singluar():
+    with pytest.raises(SystemExit) as excinfo:
+        hook_impl._check_args_length('commit-msg', [])
+    msg, = excinfo.value.args
+    assert msg == 'hook-impl for commit-msg expected 1 argument but got 0: []'
+
+
+def test_check_args_length_prepare_commit_msg_error():
+    with pytest.raises(SystemExit) as excinfo:
+        hook_impl._check_args_length('prepare-commit-msg', [])
+    msg, = excinfo.value.args
+    assert msg == (
+        'hook-impl for prepare-commit-msg expected 1, 2, or 3 arguments '
+        'but got 0: []'
+    )
+
+
 def test_run_ns_pre_commit():
     ns = hook_impl._run_ns('pre-commit', True, (), b'')
     assert ns is not None

tests/commands/run_test.py

@@ -52,6 +52,18 @@ def test_full_msg():
     assert ret == 'start......end\n'
 
 
+def test_full_msg_with_cjk():
+    ret = _full_msg(
+        start='啊あ아',
+        end_msg='end',
+        end_color='',
+        use_color=False,
+        cols=15,
+    )
+    # 5 dots: 15 - 6 - 3 - 1
+    assert ret == '啊あ아.....end\n'
+
+
 def test_full_msg_with_color():
     ret = _full_msg(
         start='start',

tests/languages/docker_test.py

@@ -20,4 +20,4 @@ def test_docker_fallback_user():
         getuid=invalid_attribute,
         getgid=invalid_attribute,
     ):
-        assert docker.get_docker_user() == '1000:1000'
+        assert docker.get_docker_user() == ()

tests/languages/node_test.py

@@ -0,0 +1,47 @@
+import sys
+from unittest import mock
+
+import pytest
+
+import pre_commit.constants as C
+from pre_commit import parse_shebang
+from pre_commit.languages.node import get_default_version
+
+
+ACTUAL_GET_DEFAULT_VERSION = get_default_version.__wrapped__
+
+
+@pytest.fixture
+def is_linux():
+    with mock.patch.object(sys, 'platform', 'linux'):
+        yield
+
+
+@pytest.fixture
+def is_win32():
+    with mock.patch.object(sys, 'platform', 'win32'):
+        yield
+
+
+@pytest.fixture
+def find_exe_mck():
+    with mock.patch.object(parse_shebang, 'find_executable') as mck:
+        yield mck
+
+
+@pytest.mark.usefixtures('is_linux')
+def test_sets_system_when_node_and_npm_are_available(find_exe_mck):
+    find_exe_mck.return_value = '/path/to/exe'
+    assert ACTUAL_GET_DEFAULT_VERSION() == 'system'
+
+
+@pytest.mark.usefixtures('is_linux')
+def test_uses_default_when_node_and_npm_are_not_available(find_exe_mck):
+    find_exe_mck.return_value = None
+    assert ACTUAL_GET_DEFAULT_VERSION() == C.DEFAULT
+
+
+@pytest.mark.usefixtures('is_win32')
+def test_sets_default_on_windows(find_exe_mck):
+    find_exe_mck.return_value = '/path/to/exe'
+    assert ACTUAL_GET_DEFAULT_VERSION() == C.DEFAULT

tests/repository_test.py

@@ -131,9 +131,9 @@ def test_python_hook(tempdir_factory, store):
 def test_python_hook_default_version(tempdir_factory, store):
     # make sure that this continues to work for platforms where default
     # language detection does not work
-    with mock.patch.object(
-            python, 'get_default_version', return_value=C.DEFAULT,
-    ):
+    returns_default = mock.Mock(return_value=C.DEFAULT)
+    lang = languages['python']._replace(get_default_version=returns_default)
+    with mock.patch.dict(languages, python=lang):
         test_python_hook(tempdir_factory, store)
 
 
@@ -243,6 +243,15 @@ def test_run_a_node_hook(tempdir_factory, store):
     )
 
 
+def test_run_a_node_hook_default_version(tempdir_factory, store):
+    # make sure that this continues to work for platforms where node is not
+    # installed at the system
+    returns_default = mock.Mock(return_value=C.DEFAULT)
+    lang = languages['node']._replace(get_default_version=returns_default)
+    with mock.patch.dict(languages, node=lang):
+        test_run_a_node_hook(tempdir_factory, store)
+
+
 def test_run_versioned_node_hook(tempdir_factory, store):
     _test_hook_repo(
         tempdir_factory, store, 'node_versioned_hooks_repo',