1 files changed, 53 insertions, 0 deletions
diff --git a/tests/check_yaml_test.py b/tests/check_yaml_test.py
new file mode 100644
index 0000000..54eb16e
--- /dev/null
+++ b/tests/check_yaml_test.py
@@ -0,0 +1,53 @@
+from __future__ import annotations
+
+import pytest
+
+from pre_commit_hooks.check_yaml import main
+from testing.util import get_resource_path
+
+
+@pytest.mark.parametrize(
+    ('filename', 'expected_retval'), (
+        ('bad_yaml.notyaml', 1),
+        ('ok_yaml.yaml', 0),
+    ),
+)
+def test_main(filename, expected_retval):
+    ret = main([get_resource_path(filename)])
+    assert ret == expected_retval
+
+
+def test_main_allow_multiple_documents(tmpdir):
+    f = tmpdir.join('test.yaml')
+    f.write('---\nfoo\n---\nbar\n')
+
+    # should fail without the setting
+    assert main((str(f),))
+
+    # should pass when we allow multiple documents
+    assert not main(('--allow-multiple-documents', str(f)))
+
+
+def test_fails_even_with_allow_multiple_documents(tmpdir):
+    f = tmpdir.join('test.yaml')
+    f.write('[')
+    assert main(('--allow-multiple-documents', str(f)))
+
+
+def test_main_unsafe(tmpdir):
+    f = tmpdir.join('test.yaml')
+    f.write(
+        'some_foo: !vault |\n'
+        '    $ANSIBLE_VAULT;1.1;AES256\n'
+        '    deadbeefdeadbeefdeadbeef\n',
+    )
+    # should fail "safe" check
+    assert main((str(f),))
+    # should pass when we allow unsafe documents
+    assert not main(('--unsafe', str(f)))
+
+
+def test_main_unsafe_still_fails_on_syntax_errors(tmpdir):
+    f = tmpdir.join('test.yaml')
+    f.write('[')
+    assert main(('--unsafe', str(f)))