File: test_bucket.py

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# -*- coding: utf-8 -*-
# This file is part of beets.
# Copyright 2016, Fabrice Laporte.
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.

"""Tests for the 'bucket' plugin."""

from __future__ import division, absolute_import, print_function

from test._common import unittest
from beetsplug import bucket
from beets import config, ui

from test.helper import TestHelper


class BucketPluginTest(unittest.TestCase, TestHelper):
    def setUp(self):
        self.setup_beets()
        self.plugin = bucket.BucketPlugin()

    def tearDown(self):
        self.teardown_beets()

    def _setup_config(self, bucket_year=[], bucket_alpha=[],
                      bucket_alpha_regex={}, extrapolate=False):
        config['bucket']['bucket_year'] = bucket_year
        config['bucket']['bucket_alpha'] = bucket_alpha
        config['bucket']['bucket_alpha_regex'] = bucket_alpha_regex
        config['bucket']['extrapolate'] = extrapolate
        self.plugin.setup()

    def test_year_single_year(self):
        """If a single year is given, range starts from this year and stops at
        the year preceding the one of next bucket."""
        self._setup_config(bucket_year=['1950s', '1970s'])
        self.assertEqual(self.plugin._tmpl_bucket('1959'), '1950s')
        self.assertEqual(self.plugin._tmpl_bucket('1969'), '1950s')

    def test_year_single_year_last_folder(self):
        """If a single year is given for the last bucket, extend it to current
        year."""
        self._setup_config(bucket_year=['1950', '1970'])
        self.assertEqual(self.plugin._tmpl_bucket('2014'), '1970')
        self.assertEqual(self.plugin._tmpl_bucket('2025'), '2025')

    def test_year_two_years(self):
        """Buckets can be named with the 'from-to' syntax."""
        self._setup_config(bucket_year=['1950-59', '1960-1969'])
        self.assertEqual(self.plugin._tmpl_bucket('1959'), '1950-59')
        self.assertEqual(self.plugin._tmpl_bucket('1969'), '1960-1969')

    def test_year_multiple_years(self):
        """Buckets can be named by listing all the years"""
        self._setup_config(bucket_year=['1950,51,52,53'])
        self.assertEqual(self.plugin._tmpl_bucket('1953'), '1950,51,52,53')
        self.assertEqual(self.plugin._tmpl_bucket('1974'), '1974')

    def test_year_out_of_range(self):
        """If no range match, return the year"""
        self._setup_config(bucket_year=['1950-59', '1960-69'])
        self.assertEqual(self.plugin._tmpl_bucket('1974'), '1974')
        self._setup_config(bucket_year=[])
        self.assertEqual(self.plugin._tmpl_bucket('1974'), '1974')

    def test_year_out_of_range_extrapolate(self):
        """If no defined range match, extrapolate all ranges using the most
        common syntax amongst existing buckets and return the matching one."""
        self._setup_config(bucket_year=['1950-59', '1960-69'],
                           extrapolate=True)
        self.assertEqual(self.plugin._tmpl_bucket('1914'), '1910-19')
        # pick single year format
        self._setup_config(bucket_year=['1962-81', '2002', '2012'],
                           extrapolate=True)
        self.assertEqual(self.plugin._tmpl_bucket('1983'), '1982')
        # pick from-end format
        self._setup_config(bucket_year=['1962-81', '2002', '2012-14'],
                           extrapolate=True)
        self.assertEqual(self.plugin._tmpl_bucket('1983'), '1982-01')
        # extrapolate add ranges, but never modifies existing ones
        self._setup_config(bucket_year=['1932', '1942', '1952', '1962-81',
                                        '2002'], extrapolate=True)
        self.assertEqual(self.plugin._tmpl_bucket('1975'), '1962-81')

    def test_alpha_all_chars(self):
        """Alphabet buckets can be named by listing all their chars"""
        self._setup_config(bucket_alpha=['ABCD', 'FGH', 'IJKL'])
        self.assertEqual(self.plugin._tmpl_bucket('garry'), 'FGH')

    def test_alpha_first_last_chars(self):
        """Alphabet buckets can be named by listing the 'from-to' syntax"""
        self._setup_config(bucket_alpha=['0->9', 'A->D', 'F-H', 'I->Z'])
        self.assertEqual(self.plugin._tmpl_bucket('garry'), 'F-H')
        self.assertEqual(self.plugin._tmpl_bucket('2pac'), '0->9')

    def test_alpha_out_of_range(self):
        """If no range match, return the initial"""
        self._setup_config(bucket_alpha=['ABCD', 'FGH', 'IJKL'])
        self.assertEqual(self.plugin._tmpl_bucket('errol'), 'E')
        self._setup_config(bucket_alpha=[])
        self.assertEqual(self.plugin._tmpl_bucket('errol'), 'E')

    def test_alpha_regex(self):
        """Check regex is used"""
        self._setup_config(bucket_alpha=['foo', 'bar'],
                           bucket_alpha_regex={'foo': '^[a-d]',
                                               'bar': '^[e-z]'})
        self.assertEqual(self.plugin._tmpl_bucket('alpha'), 'foo')
        self.assertEqual(self.plugin._tmpl_bucket('delta'), 'foo')
        self.assertEqual(self.plugin._tmpl_bucket('zeta'), 'bar')
        self.assertEqual(self.plugin._tmpl_bucket('Alpha'), 'A')

    def test_alpha_regex_mix(self):
        """Check mixing regex and non-regex is possible"""
        self._setup_config(bucket_alpha=['A - D', 'E - L'],
                           bucket_alpha_regex={'A - D': '^[0-9a-dA-D…äÄ]'})
        self.assertEqual(self.plugin._tmpl_bucket('alpha'), 'A - D')
        self.assertEqual(self.plugin._tmpl_bucket('Ärzte'), 'A - D')
        self.assertEqual(self.plugin._tmpl_bucket('112'), 'A - D')
        self.assertEqual(self.plugin._tmpl_bucket('…and Oceans'), 'A - D')
        self.assertEqual(self.plugin._tmpl_bucket('Eagles'), 'E - L')

    def test_bad_alpha_range_def(self):
        """If bad alpha range definition, a UserError is raised."""
        with self.assertRaises(ui.UserError):
            self._setup_config(bucket_alpha=['$%'])

    def test_bad_year_range_def_no4digits(self):
        """If bad year range definition, a UserError is raised.
        Range origin must be expressed on 4 digits.
        """
        with self.assertRaises(ui.UserError):
            self._setup_config(bucket_year=['62-64'])

    def test_bad_year_range_def_nodigits(self):
        """If bad year range definition, a UserError is raised.
        At least the range origin must be declared.
        """
        with self.assertRaises(ui.UserError):
            self._setup_config(bucket_year=['nodigits'])

    def check_span_from_str(self, sstr, dfrom, dto):
        d = bucket.span_from_str(sstr)
        self.assertEqual(dfrom, d['from'])
        self.assertEqual(dto, d['to'])

    def test_span_from_str(self):
        self.check_span_from_str("1980 2000", 1980, 2000)
        self.check_span_from_str("1980 00", 1980, 2000)
        self.check_span_from_str("1930 00", 1930, 2000)
        self.check_span_from_str("1930 50", 1930, 1950)


def suite():
    return unittest.TestLoader().loadTestsFromName(__name__)

if __name__ == '__main__':
    unittest.main(defaultTest='suite')