1 files changed, 138 insertions, 0 deletions
diff --git a/tests/meta_hooks/check_hooks_apply_test.py b/tests/meta_hooks/check_hooks_apply_test.py
new file mode 100644
index 0000000..06bdd04
--- /dev/null
+++ b/tests/meta_hooks/check_hooks_apply_test.py
@@ -0,0 +1,138 @@
+from pre_commit.meta_hooks import check_hooks_apply
+from testing.fixtures import add_config_to_repo
+
+
+def test_hook_excludes_everything(capsys, in_git_dir, mock_store_dir):
+    config = {
+        'repos': [
+            {
+                'repo': 'meta',
+                'hooks': [
+                    {
+                        'id': 'check-useless-excludes',
+                        'exclude': '.pre-commit-config.yaml',
+                    },
+                ],
+            },
+        ],
+    }
+
+    add_config_to_repo(in_git_dir.strpath, config)
+
+    assert check_hooks_apply.main(()) == 1
+
+    out, _ = capsys.readouterr()
+    assert 'check-useless-excludes does not apply to this repository' in out
+
+
+def test_hook_includes_nothing(capsys, in_git_dir, mock_store_dir):
+    config = {
+        'repos': [
+            {
+                'repo': 'meta',
+                'hooks': [
+                    {
+                        'id': 'check-useless-excludes',
+                        'files': 'foo',
+                    },
+                ],
+            },
+        ],
+    }
+
+    add_config_to_repo(in_git_dir.strpath, config)
+
+    assert check_hooks_apply.main(()) == 1
+
+    out, _ = capsys.readouterr()
+    assert 'check-useless-excludes does not apply to this repository' in out
+
+
+def test_hook_types_not_matched(capsys, in_git_dir, mock_store_dir):
+    config = {
+        'repos': [
+            {
+                'repo': 'meta',
+                'hooks': [
+                    {
+                        'id': 'check-useless-excludes',
+                        'types': ['python'],
+                    },
+                ],
+            },
+        ],
+    }
+
+    add_config_to_repo(in_git_dir.strpath, config)
+
+    assert check_hooks_apply.main(()) == 1
+
+    out, _ = capsys.readouterr()
+    assert 'check-useless-excludes does not apply to this repository' in out
+
+
+def test_hook_types_excludes_everything(capsys, in_git_dir, mock_store_dir):
+    config = {
+        'repos': [
+            {
+                'repo': 'meta',
+                'hooks': [
+                    {
+                        'id': 'check-useless-excludes',
+                        'exclude_types': ['yaml'],
+                    },
+                ],
+            },
+        ],
+    }
+
+    add_config_to_repo(in_git_dir.strpath, config)
+
+    assert check_hooks_apply.main(()) == 1
+
+    out, _ = capsys.readouterr()
+    assert 'check-useless-excludes does not apply to this repository' in out
+
+
+def test_valid_exceptions(capsys, in_git_dir, mock_store_dir):
+    config = {
+        'repos': [
+            {
+                'repo': 'local',
+                'hooks': [
+                    # applies to a file
+                    {
+                        'id': 'check-yaml',
+                        'name': 'check yaml',
+                        'entry': './check-yaml',
+                        'language': 'script',
+                        'files': r'\.yaml$',
+                    },
+                    # Should not be reported as an error due to language: fail
+                    {
+                        'id': 'changelogs-rst',
+                        'name': 'changelogs must be rst',
+                        'entry': 'changelog filenames must end in .rst',
+                        'language': 'fail',
+                        'files': r'changelog/.*(?<!\.rst)$',
+                    },
+                    # Should not be reported as an error due to always_run
+                    {
+                        'id': 'i-always-run',
+                        'name': 'make check',
+                        'entry': 'make check',
+                        'language': 'system',
+                        'files': '^$',
+                        'always_run': True,
+                    },
+                ],
+            },
+        ],
+    }
+
+    add_config_to_repo(in_git_dir.strpath, config)
+
+    assert check_hooks_apply.main(()) == 0
+
+    out, _ = capsys.readouterr()
+    assert out == ''