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import logging
import os.path
import shutil
import unittest

import ruamel.yaml

import lesana


class testCollectionLoading(unittest.TestCase):
    def tearDown(self):
        shutil.rmtree(os.path.join(self.collection.basedir, '.lesana'))

    def test_empty(self):
        self.collection = lesana.Collection('tests/data/empty')
        self.assertEqual(self.collection.settings, {})

        self.collection.update_cache()
        self.assertIsNotNone(self.collection.stemmer)

    def test_simple(self):
        self.collection = lesana.Collection('tests/data/simple')
        self.assertIsNotNone(self.collection.settings)
        self.assertEqual(
            self.collection.settings['name'],
            "Simple lesana collection"
            )
        self.assertEqual(len(self.collection.settings['fields']), 4)
        self.assertEqual(len(self.collection.indexed_fields), 2)

        self.collection.update_cache()
        self.assertIsNotNone(self.collection.stemmer)

    def test_wrong_language(self):
        # This loads a collection with an invalid value in lang
        with self.assertLogs(level=logging.WARNING) as cm:
            self.collection = lesana.Collection('tests/data/wrong')
        self.assertEqual(len(cm.output), 1)
        self.assertIn("Invalid language", cm.output[0])
        # The collection will default to english, but should still work.
        self.collection.update_cache()
        self.assertIsNotNone(self.collection.settings)
        self.assertIsNotNone(self.collection.stemmer)

    def test_no_index_for_one_entry(self):
        # This loads a collection where some of the entries have no
        # "index" field
        with self.assertLogs(level=logging.WARNING) as cm:
            self.collection = lesana.Collection('tests/data/wrong')
        self.collection.update_cache()
        self.assertIsNotNone(self.collection.settings)
        self.assertIsNotNone(self.collection.stemmer)
        # Fields with no "index" entry are not indexed
        self.assertEqual(len(self.collection.settings['fields']), 3)
        self.assertEqual(len(self.collection.indexed_fields), 1)

    def test_unsafe(self):
        self.collection = lesana.Collection('tests/data/simple')
        self.collection.safe = False
        self.collection.update_cache()

    def test_search(self):
        self.collection = lesana.Collection('tests/data/simple')
        res = self.collection.search('Item')
        matches = list(res)
        self.assertEqual(len(matches), 2)
        for m in matches:
            self.assertIsInstance(m, lesana.Entry)

    def test_entry_from_uid(self):
        self.collection = lesana.Collection('tests/data/simple')
        entry = self.collection.entry_from_uid(
            '11189ee47ddf4796b718a483b379f976'
            )
        self.assertEqual(entry.uid, '11189ee47ddf4796b718a483b379f976')



class testEntries(unittest.TestCase):
    def setUp(self):
        self.collection = lesana.Collection('tests/data/simple')
        self.basepath = 'tests/data/simple/items'

    def tearDown(self):
        shutil.rmtree(os.path.join(self.collection.basedir, '.lesana'))


    def test_simple(self):
        fname = '085682ed-6792-499d-a3ab-9aebd683c011.yaml'
        with open(os.path.join(self.basepath, fname)) as fp:
            data = ruamel.yaml.load(fp)
        entry = lesana.Entry(self.collection, data=data, fname=fname)
        self.assertEqual(entry.idterm, 'Q'+data['uid'])
        fname = '11189ee47ddf4796b718a483b379f976.yaml'
        uid = '11189ee47ddf4796b718a483b379f976'
        with open(os.path.join(self.basepath, fname)) as fp:
            data = ruamel.yaml.load(fp)
        entry = lesana.Entry(self.collection, data=data, fname=fname)
        self.assertEqual(entry.idterm, 'Q'+uid)

    def test_write_new(self):
        new_entry = lesana.Entry(self.collection)
        self.collection.save_entries(entries=[new_entry])
        entry_fname = 'tests/data/simple/items/' + new_entry.fname
        with open(entry_fname) as fp:
            written = ruamel.yaml.load(fp)
        self.assertIsInstance(written['quantity'], int)
        self.assertIsInstance(written['name'], str)
        os.remove(entry_fname)


class testComplexCollection(unittest.TestCase):
    @classmethod
    def setUpClass(self):
        self.collection = lesana.Collection('tests/data/complex')

    @classmethod
    def tearDownClass(self):
        shutil.rmtree(os.path.join(self.collection.basedir, '.lesana'))

    def test_init(self):
        self.assertIsNotNone(self.collection.settings)
        self.assertEqual(
            self.collection.settings['name'],
            "Fully featured lesana collection"
            )
        self.assertEqual(len(self.collection.settings['fields']), 3)
        self.assertIsNotNone(self.collection.stemmer)
        self.assertEqual(len(self.collection.indexed_fields), 2)

    def test_index(self):
        self.collection.update_cache()