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#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""Unit tests for arXiv provider

This file is part of paper2remarkable.

"""

import os
import re
import shutil
import tempfile
import unittest

from paper2remarkable.providers.arxiv import DEARXIV_TEXT_REGEX, Arxiv


class TestArxiv(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        cls.original_dir = os.getcwd()

    def setUp(self):
        self.test_dir = tempfile.mkdtemp()
        os.chdir(self.test_dir)

    def tearDown(self):
        os.chdir(self.original_dir)
        shutil.rmtree(self.test_dir)

    def test_text_regex_1(self):
        key = b"arXiv:1908.03213v1 [astro.HE] 8 Aug 2019"
        m = re.fullmatch(DEARXIV_TEXT_REGEX, key)
        self.assertIsNotNone(m)

    def test_text_regex_2(self):
        key = b"arXiv:1908.03213v1 [astro-ph.HE] 8 Aug 2019"
        m = re.fullmatch(DEARXIV_TEXT_REGEX, key)
        self.assertIsNotNone(m)

    def test_stamp_removed_1(self):
        url = "https://arxiv.org/pdf/1703.06103.pdf"
        prov = Arxiv(upload=False)
        filename = prov.run(url, filename="./target.pdf")
        prov.uncompress_pdf(filename, "unc.pdf")
        with open("unc.pdf", "rb") as fp:
            data = fp.read()
        self.assertNotIn(b"arXiv:1703.06103v4  [stat.ML]  26 Oct 2017", data)

    def test_stamp_removed_2(self):
        url = "https://arxiv.org/abs/2003.06222"
        prov = Arxiv(upload=False)
        filename = prov.run(url, filename="./target.pdf")
        prov.uncompress_pdf(filename, "unc.pdf")
        with open("unc.pdf", "rb") as fp:
            data = fp.read()
        self.assertNotIn(b"arXiv:2003.06222v1  [stat.ML]  13 Mar 2020", data)


if __name__ == "__main__":
    unittest.main()