# Copyright 2014  Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# =*= License: GPL-3+ =*=


import unittest

import distixlib


class MetadataSerialiserTests(unittest.TestCase):

    # These tests check for precise YAML output. This is important, because
    # making the output always be the same minimises merge deltas and, I hope,
    # merge conflicts.

    def setUp(self):
        self.metadata = distixlib.Metadata()
        self.serialiser = distixlib.MetadataSerialiser()

    def test_serialises_empty_metadata(self):
        self.assertEqual(self.serialiser.serialise(self.metadata), '{}\n')

    def test_serialises_one_key_value_pair(self):
        self.metadata.add('key', 'value')
        self.assertEqual(
            self.serialiser.serialise(self.metadata),
            'key:\n- value\n')

    def test_serialises_key_with_two_values(self):
        self.metadata.add('key', 'value2')
        self.metadata.add('key', 'value1')
        self.assertEqual(
            self.serialiser.serialise(self.metadata),
            'key:\n- value1\n- value2\n')

    def test_serialises_two_keys(self):
        self.metadata.add('key2', 'value2')
        self.metadata.add('key1', 'value1')
        self.assertEqual(
            self.serialiser.serialise(self.metadata),
            'key1:\n- value1\nkey2:\n- value2\n')

    def test_deserialises_empty_file(self):
        new = self.serialiser.deserialise('')
        self.assertListEqual(new.keys(), [])

    def test_deserialises_one_key_value_pair(self):
        new = self.serialiser.deserialise('key:\n- value\n')
        self.assertListEqual(new.keys(), ['key'])
        self.assertListEqual(new.get_all_values('key'), ['value'])

    def test_deserialises_key_with_two_values(self):
        new = self.serialiser.deserialise('key:\n- value1\n- value2\n')
        self.assertListEqual(new.keys(), ['key'])
        self.assertItemsEqual(new.get_all_values('key'), ['value1', 'value2'])

    def test_deserialises_two_key_value_pairs(self):
        new = self.serialiser.deserialise('key1:\n- value1\nkey2:\n- value2\n')
        self.assertItemsEqual(new.keys(), ['key1', 'key2'])
        self.assertListEqual(new.get_all_values('key1'), ['value1'])
        self.assertListEqual(new.get_all_values('key2'), ['value2'])