Method get_child_details

Lib/test/test_c_locale_coercion.py:139–160

Retrieves fsencoding and standard stream details from a child process Returns (encoding_details, stderr_lines): - encoding_details: EncodingDetails for eager decoding - stderr_lines: result of calling splitlines() on the stderr output The child is run in isolated m

(cls, env_vars)

    @classmethod
    def get_child_details(cls, env_vars):
        """Retrieves fsencoding and standard stream details from a child process

        Returns (encoding_details, stderr_lines):

        - encoding_details: EncodingDetails for eager decoding
        - stderr_lines: result of calling splitlines() on the stderr output

        The child is run in isolated mode if the current interpreter supports
        that.
        """
        result, py_cmd = run_python_until_end(
            "-X", "utf8=0", "-c", cls.CHILD_PROCESS_SCRIPT,
            **env_vars
        )
        if not result.rc == 0:
            result.fail(py_cmd)
        # All subprocess outputs in this test case should be pure ASCII
        stdout_lines = result.out.decode("ascii").splitlines()
        child_encoding_details = dict(cls(*stdout_lines)._asdict())
        stderr_lines = result.err.decode("ascii").rstrip().splitlines()
        return child_encoding_details, stderr_lines


# Details of the shared library warning emitted at runtime