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94 lines
3.7 KiB
Python
94 lines
3.7 KiB
Python
# This file is part of beets.
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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"""Tests for the 'limit' plugin."""
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from beets.test.helper import PluginTestCase
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class LimitPluginTest(PluginTestCase):
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"""Unit tests for LimitPlugin
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Note: query prefix tests do not work correctly with `run_with_output`.
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"""
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plugin = "limit"
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def setUp(self):
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super().setUp()
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# we'll create an even number of tracks in the library
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self.num_test_items = 10
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assert self.num_test_items % 2 == 0
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for item_no, item in enumerate(
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self.add_item_fixtures(count=self.num_test_items)
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):
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item.track = item_no + 1
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item.store()
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# our limit tests will use half of this number
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self.num_limit = self.num_test_items // 2
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self.num_limit_prefix = "".join(["'", "<", str(self.num_limit), "'"])
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# a subset of tests has only `num_limit` results, identified by a
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# range filter on the track number
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self.track_head_range = f"track:..{self.num_limit}"
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self.track_tail_range = f"track:{self.num_limit + 1}{'..'}"
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def test_no_limit(self):
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"""Returns all when there is no limit or filter."""
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result = self.run_with_output("lslimit")
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assert result.count("\n") == self.num_test_items
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def test_lslimit_head(self):
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"""Returns the expected number with `lslimit --head`."""
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result = self.run_with_output("lslimit", "--head", str(self.num_limit))
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assert result.count("\n") == self.num_limit
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def test_lslimit_tail(self):
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"""Returns the expected number with `lslimit --tail`."""
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result = self.run_with_output("lslimit", "--tail", str(self.num_limit))
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assert result.count("\n") == self.num_limit
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def test_lslimit_head_invariant(self):
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"""Returns the expected number with `lslimit --head` and a filter."""
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result = self.run_with_output(
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"lslimit", "--head", str(self.num_limit), self.track_tail_range
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)
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assert result.count("\n") == self.num_limit
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def test_lslimit_tail_invariant(self):
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"""Returns the expected number with `lslimit --tail` and a filter."""
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result = self.run_with_output(
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"lslimit", "--tail", str(self.num_limit), self.track_head_range
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)
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assert result.count("\n") == self.num_limit
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def test_prefix(self):
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"""Returns the expected number with the query prefix."""
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result = self.lib.items(self.num_limit_prefix)
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assert len(result) == self.num_limit
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def test_prefix_when_correctly_ordered(self):
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"""Returns the expected number with the query prefix and filter when
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the prefix portion (correctly) appears last."""
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correct_order = f"{self.track_tail_range} {self.num_limit_prefix}"
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result = self.lib.items(correct_order)
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assert len(result) == self.num_limit
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def test_prefix_when_incorrectly_ordred(self):
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"""Returns no results with the query prefix and filter when the prefix
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portion (incorrectly) appears first."""
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incorrect_order = f"{self.num_limit_prefix} {self.track_tail_range}"
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result = self.lib.items(incorrect_order)
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assert len(result) == 0
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