Function test_read_utf_data_file

tests/test_cli.py:236–296

(
    tmp_path_factory: pytest.TempPathFactory,
    monkeypatch: pytest.MonkeyPatch,
    data_file_encoding: str,
)

    ["utf-8", "utf-8-sig", "utf-16-le", "utf-16-be"],
)
def test_read_utf_data_file(
    tmp_path_factory: pytest.TempPathFactory,
    monkeypatch: pytest.MonkeyPatch,
    data_file_encoding: str,
) -> None:
    src, dst, local = map(tmp_path_factory.mktemp, ("src", "dst", "local"))

    def encode_data(data: dict[str, str]) -> bytes:
        dump = yaml.dump(data, allow_unicode=True)
        if data_file_encoding.startswith("utf-16"):
            dump = "\ufeff" + dump
        return dump.encode(data_file_encoding)

    build_file_tree(
        {
            (src / "copier.yml"): (
                """\
                text1:
                    type: str
                text2:
                    type: str
                """
            ),
            (src / "{{ _copier_conf.answers_file }}.jinja"): (
                """\
                # Changes here will be overwritten by Copier
                {{ _copier_answers|to_nice_yaml }}
                """
            ),
            (local / "data.yml"): encode_data(
                {
                    "text1": "\u3053\u3093\u306b\u3061\u306f",  # japanese hiragana
                    "text2": "\U0001f60e",  # smiling face with sunglasses
                }
            ),
        }
    )

    with monkeypatch.context() as m:
        # Override the factor that determine the default encoding when opening files.
        # data.yml should be read correctly regardless of this value.
        m.setattr("io.text_encoding", lambda *_args: "cp932")
        run_result = CopierApp.run(
            [
                "copier",
                "copy",
                f"--data-file={local / 'data.yml'}",
                str(src),
                str(dst),
            ],
            exit=False,
        )

    assert run_result[1] == 0
    expected_answers = {
        "_src_path": str(src),
        "text1": "\u3053\u3093\u306b\u3061\u306f",
        "text2": "\U0001f60e",