Respect web-history-max-items with SQL.

Use a LIMIT with the sql competion model to limit history entries as the old
completion implementation did.

qutebrowser/completion/models/urlmodel.py

@@ -20,6 +20,7 @@
 """Function to return the url completion model for the `open` command."""
 
 from qutebrowser.completion.models import sqlmodel
+from qutebrowser.config import config
 
 
 def url():
@@ -32,7 +33,8 @@ def url():
 
     model = sqlmodel.SqlCompletionModel(column_widths=(40, 50, 10),
                                         columns_to_filter=[urlcol, textcol])
-    model.new_category('History')
+    model.new_category('History',
+                       limit=config.get('completion', 'web-history-max-items'))
     model.new_category('Quickmarks')
     model.new_category('Bookmarks')
     return model

tests/unit/completion/test_models.py

@@ -268,8 +268,8 @@ def test_url_completion(qtmodeltester, config_stub, web_history, quickmarks,
         - the most recent entries are included
     """
     # TODO: time formatting and item limiting
-    #config_stub.data['completion'] = {'timestamp-format': '%Y-%m-%d',
-    #                                  'web-history-max-items': 2}
+    config_stub.data['completion'] = {'timestamp-format': '%Y-%m-%d',
+                                      'web-history-max-items': 2}
     model = urlmodel.url()
     qtmodeltester.data_display_may_return_none = True
     qtmodeltester.check(model)
@@ -303,8 +303,6 @@ def test_url_completion(qtmodeltester, config_stub, web_history, quickmarks,
              datetime(2015, 9, 5).timestamp()),
             ('https://python.org', 'Welcome to Python.org',
              datetime(2016, 3, 8).timestamp()),
-            ('https://github.com', 'https://github.com',
-             datetime(2016, 5, 1).timestamp()),
         ],
     })
 

tests/unit/completion/test_sqlmodel.py

@@ -202,6 +202,7 @@ def test_first_last_item(data, first, last):
     assert model.data(model.first_item()) == first
     assert model.data(model.last_item()) == last
 
+
 def test_limit():
     table = sql.SqlTable('test_limit', ['a'], primary_key='a')
     for i in range(5):