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