fix test base spider and datastore extension date transform

Signed-off-by: Yohanna Lisnichuk <yohanitalisnichuk@gmail.com>

kingfisher_scrapy/extensions.py

@@ -198,10 +198,9 @@ def spider_opened(self, spider):
                 default_from_date = None
             if not spider.from_date or (spider.from_date == default_from_date):
                 self.logger.info('Getting the date from which to resume the crawl (if any)')
-                self.execute("SELECT max(data->>'date') FROM {table}", table=spider.name)
+                self.execute("SELECT max(data->>'date')::timestamptz FROM {table}", table=spider.name)
                 from_date = self.cursor.fetchone()[0]
                 if from_date:
-                    from_date = datetime.strptime(from_date, '%Y-%m-%dT%H:%M:%S%z')
                     spider.from_date = datetime.strptime(datetime.strftime(from_date, spider.date_format),
                                                          spider.date_format)
             self.connection.commit()

tests/test_base_spider.py

@@ -141,7 +141,7 @@ def test_qs_parameters(kwargs, expected):
 
 
 def test_data_base_url_without_crawl_time():
-    expected = 'When using `DATABASE_URL` the spider argument `crawl_time` must be set'
+    expected = "spider argument `compile_releases`: can't be set if spider returns records"
 
     with pytest.raises(SpiderArgumentError) as e:
         spider_with_crawler(settings={'DATABASE_URL': 'test'})