#!/usr/bin/python3

"""test_tookkit.py - tests of the toolkit-module of DHParser 


Author: Eckhart Arnold <arnold@badw.de>

Copyright 2017 Bavarian Academy of Sciences and Humanities

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""

import os
import sys

from DHParser.toolkit import load_if_file

class TestToolkit:
    filename = "tmp/test.py" if os.path.isdir('tmp') else "test/tmp/test.py"
    code1 = "x = 46"
    code2 = "def f():\n    return 46"

    def setup(self):
        with open(self.filename, 'w') as f:
            f.write(self.code2)

    def teardown(self):
        os.remove(self.filename)

    def test_load_if_file(self):
        # an error should be raised if file expected but not found
        error_raised = False
        try:
            load_if_file('this_is_code_and_not_a_file')
        except FileNotFoundError:
            error_raised = True
        assert error_raised

        # multiline text will never be mistaken for a file
        assert load_if_file('this_is_code_and_not_a_file\n')

        # neither will text that does not look like a file name
        s = "this is code and not a file"
        assert s == load_if_file(s)

        # not a file and not mistaken for a file
        assert self.code1 == load_if_file(self.code1)

        # not a file and not mistaken for a file either
        assert self.code2 == load_if_file(self.code2)

        # file correctly loaded
        assert self.code2 == load_if_file(self.filename)


if __name__ == "__main__":
    from run import runner
    runner("", globals())