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from io import StringIO
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from pathlib import Path
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import pytest
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from .._yaml_api import yaml_dumps, yaml_loads, read_yaml, write_yaml
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from .._yaml_api import is_yaml_serializable
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from ..ruamel_yaml.comments import CommentedMap
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from .util import make_tempdir
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def test_yaml_dumps():
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data = {"a": [1, "hello"], "b": {"foo": "bar", "baz": [10.5, 120]}}
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result = yaml_dumps(data)
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expected = "a:\n - 1\n - hello\nb:\n foo: bar\n baz:\n - 10.5\n - 120\n"
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assert result == expected
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def test_yaml_dumps_indent():
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data = {"a": [1, "hello"], "b": {"foo": "bar", "baz": [10.5, 120]}}
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result = yaml_dumps(data, indent_mapping=2, indent_sequence=2, indent_offset=0)
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expected = "a:\n- 1\n- hello\nb:\n foo: bar\n baz:\n - 10.5\n - 120\n"
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assert result == expected
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def test_yaml_loads():
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data = "a:\n- 1\n- hello\nb:\n foo: bar\n baz:\n - 10.5\n - 120\n"
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result = yaml_loads(data)
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# Check that correct loader is used and result is regular dict, not the
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# custom ruamel.yaml "ordereddict" class
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assert not isinstance(result, CommentedMap)
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assert result == {"a": [1, "hello"], "b": {"foo": "bar", "baz": [10.5, 120]}}
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def test_read_yaml_file():
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file_contents = "a:\n- 1\n- hello\nb:\n foo: bar\n baz:\n - 10.5\n - 120\n"
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with make_tempdir({"tmp.yaml": file_contents}) as temp_dir:
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file_path = temp_dir / "tmp.yaml"
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assert file_path.exists()
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data = read_yaml(file_path)
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assert len(data) == 2
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assert data["a"] == [1, "hello"]
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def test_read_yaml_file_invalid():
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file_contents = "a: - 1\n- hello\nb:\n foo: bar\n baz:\n - 10.5\n - 120\n"
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with make_tempdir({"tmp.yaml": file_contents}) as temp_dir:
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file_path = temp_dir / "tmp.yaml"
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assert file_path.exists()
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with pytest.raises(ValueError):
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read_yaml(file_path)
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def test_read_yaml_stdin(monkeypatch):
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input_data = "a:\n - 1\n - hello\nb:\n foo: bar\n baz:\n - 10.5\n - 120\n"
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monkeypatch.setattr("sys.stdin", StringIO(input_data))
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data = read_yaml("-")
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assert len(data) == 2
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assert data["a"] == [1, "hello"]
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def test_write_yaml_file():
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data = {"hello": "world", "test": [123, 456]}
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expected = "hello: world\ntest:\n - 123\n - 456\n"
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with make_tempdir() as temp_dir:
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file_path = temp_dir / "tmp.yaml"
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write_yaml(file_path, data)
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with Path(file_path).open("r", encoding="utf8") as f:
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assert f.read() == expected
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def test_write_yaml_stdout(capsys):
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data = {"hello": "world", "test": [123, 456]}
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expected = "hello: world\ntest:\n - 123\n - 456\n\n"
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write_yaml("-", data)
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captured = capsys.readouterr()
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assert captured.out == expected
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@pytest.mark.parametrize(
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"obj,expected",
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[
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(["a", "b", 1, 2], True),
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({"a": "b", "c": 123}, True),
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("hello", True),
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(lambda x: x, False),
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({"a": lambda x: x}, False),
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],
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)
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def test_is_yaml_serializable(obj, expected):
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assert is_yaml_serializable(obj) == expected
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# Check again to be sure it's consistent
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assert is_yaml_serializable(obj) == expected
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