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Auto merge of #1927 - micbou:event-notification-test, r=Valloric

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[READY] Fix issue in EventNotification tests

While I was reviewing PR #1905, I found an issue with the `EventNotification` tests. It's easy to reproduce. You just need to comment [this line in `python/ycm/youcompleteme.py`](https://github.com/Valloric/YouCompleteMe/blob/master/python/ycm/youcompleteme.py#L508) and run the tests. With this change, the `EventNotification` tests should fail since the second call of `ValidateParseRequest` re-raises the warning. However, tests are still passing because `assert_has_calls` does not check if a call was not made. For example, if `functionA` is called twice, both `assert_has_calls( [ functionA ] )` and `assert_has_calls( [ functionA, functionA ] )` are successful.

To fix this, we just need to check the number of calls using `call_count`. This is done by creating a subclass of `MagicMock` implementing the `assert_has_exact_calls` method and using it in tests.

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This commit is contained in:
Homu 2016-01-25 08:26:15 +09:00
commit 1201115141
2 changed files with 38 additions and 24 deletions
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8
python/ycm/test_utils.py
View File

@ -18,6 +18,7 @@
# along with YouCompleteMe. If not, see <http://www.gnu.org/licenses/>.
from mock import MagicMock
from hamcrest import assert_that, equal_to
import re
import sys
@ -116,3 +117,10 @@ def MockVimModule():
sys.modules[ 'vim' ] = VIM_MOCK
return VIM_MOCK
class ExtendedMock( MagicMock ):
def assert_has_exact_calls( self, calls, any_order = False ):
self.assert_has_calls( calls, any_order )
assert_that( self.call_count, equal_to( len( calls ) ) )

54
python/ycm/tests/event_notification_test.py
View File

@ -16,10 +16,11 @@
# You should have received a copy of the GNU General Public License
# along with YouCompleteMe. If not, see <http://www.gnu.org/licenses/>.
from ycm.test_utils import MockVimModule
from ycm.test_utils import MockVimModule, ExtendedMock
MockVimModule()
import contextlib, os
import contextlib
import os
from ycm.youcompleteme import YouCompleteMe
from ycmd import user_options_store
@ -36,6 +37,7 @@ DEFAULT_CLIENT_OPTIONS = {
'extra_conf_vim_data': [],
}
def PostVimMessage_Call( message ):
"""Return a mock.call object for a call to vimsupport.PostVimMesasge with the
supplied message"""
@ -74,7 +76,7 @@ def MockArbitraryBuffer( filetype, native_available = True ):
raise ValueError( 'Unexpected evaluation' )
# Arbitrary, but valid, cursor position
vim_current.window.cursor = (1,2)
vim_current.window.cursor = ( 1, 2 )
# Arbitrary, but valid, single buffer open
current_buffer = MagicMock()
@ -129,7 +131,7 @@ class EventNotification_test( object ):
def setUp( self ):
options = dict( user_options_store.DefaultOptions() )
options.update ( DEFAULT_CLIENT_OPTIONS )
options.update( DEFAULT_CLIENT_OPTIONS )
user_options_store.SetAll( options )
self.server_state = YouCompleteMe( user_options_store.GetAll() )
@ -141,7 +143,7 @@ class EventNotification_test( object ):
self.server_state.OnVimLeave()
@patch( 'vim.command' )
@patch( 'vim.command', new_callable = ExtendedMock )
def FileReadyToParse_NonDiagnostic_Error_test( self, vim_command ):
# This test validates the behaviour of YouCompleteMe.ValidateParseRequest in
# combination with YouCompleteMe.OnFileReadyToParse when the completer
@ -158,13 +160,13 @@ class EventNotification_test( object ):
self.server_state.ValidateParseRequest()
# The first call raises a warning
vim_command.assert_has_calls( [
vim_command.assert_has_exact_calls( [
PostVimMessage_Call( ERROR_TEXT ),
] )
# Subsequent calls don't re-raise the warning
self.server_state.ValidateParseRequest()
vim_command.assert_has_calls( [
vim_command.assert_has_exact_calls( [
PostVimMessage_Call( ERROR_TEXT ),
] )
@ -172,7 +174,7 @@ class EventNotification_test( object ):
self.server_state.OnFileReadyToParse()
assert self.server_state.DiagnosticsForCurrentFileReady()
self.server_state.ValidateParseRequest()
vim_command.assert_has_calls( [
vim_command.assert_has_exact_calls( [
PostVimMessage_Call( ERROR_TEXT ),
PostVimMessage_Call( ERROR_TEXT ),
] )
@ -187,8 +189,10 @@ class EventNotification_test( object ):
vim_command.assert_not_called()
@patch( 'ycm.client.event_notification._LoadExtraConfFile' )
@patch( 'ycm.client.event_notification._IgnoreExtraConfFile' )
@patch( 'ycm.client.event_notification._LoadExtraConfFile',
new_callable = ExtendedMock )
@patch( 'ycm.client.event_notification._IgnoreExtraConfFile',
new_callable = ExtendedMock )
def FileReadyToParse_NonDiagnostic_ConfirmExtraConf_test(
self,
ignore_extra_conf,
@ -211,25 +215,26 @@ class EventNotification_test( object ):
# When the user accepts the extra conf, we load it
with patch( 'ycm.vimsupport.PresentDialog',
return_value = 0 ) as present_dialog:
return_value = 0,
new_callable = ExtendedMock ) as present_dialog:
self.server_state.OnFileReadyToParse()
assert self.server_state.DiagnosticsForCurrentFileReady()
self.server_state.ValidateParseRequest()
present_dialog.assert_has_calls( [
present_dialog.assert_has_exact_calls( [
PresentDialog_Confirm_Call( MESSAGE ),
] )
load_extra_conf.assert_has_calls( [
load_extra_conf.assert_has_exact_calls( [
call( FILE_NAME ),
] )
# Subsequent calls don't re-raise the warning
self.server_state.ValidateParseRequest()
present_dialog.assert_has_calls( [
present_dialog.assert_has_exact_calls( [
PresentDialog_Confirm_Call( MESSAGE )
] )
load_extra_conf.assert_has_calls( [
load_extra_conf.assert_has_exact_calls( [
call( FILE_NAME ),
] )
@ -238,36 +243,37 @@ class EventNotification_test( object ):
assert self.server_state.DiagnosticsForCurrentFileReady()
self.server_state.ValidateParseRequest()
present_dialog.assert_has_calls( [
present_dialog.assert_has_exact_calls( [
PresentDialog_Confirm_Call( MESSAGE ),
PresentDialog_Confirm_Call( MESSAGE ),
] )
load_extra_conf.assert_has_calls( [
load_extra_conf.assert_has_exact_calls( [
call( FILE_NAME ),
call( FILE_NAME ),
] )
# When the user rejects the extra conf, we reject it
with patch( 'ycm.vimsupport.PresentDialog',
return_value = 1 ) as present_dialog:
return_value = 1,
new_callable = ExtendedMock ) as present_dialog:
self.server_state.OnFileReadyToParse()
assert self.server_state.DiagnosticsForCurrentFileReady()
self.server_state.ValidateParseRequest()
present_dialog.assert_has_calls( [
present_dialog.assert_has_exact_calls( [
PresentDialog_Confirm_Call( MESSAGE ),
] )
ignore_extra_conf.assert_has_calls( [
ignore_extra_conf.assert_has_exact_calls( [
call( FILE_NAME ),
] )
# Subsequent calls don't re-raise the warning
self.server_state.ValidateParseRequest()
present_dialog.assert_has_calls( [
present_dialog.assert_has_exact_calls( [
PresentDialog_Confirm_Call( MESSAGE )
] )
ignore_extra_conf.assert_has_calls( [
ignore_extra_conf.assert_has_exact_calls( [
call( FILE_NAME ),
] )
@ -276,11 +282,11 @@ class EventNotification_test( object ):
assert self.server_state.DiagnosticsForCurrentFileReady()
self.server_state.ValidateParseRequest()
present_dialog.assert_has_calls( [
present_dialog.assert_has_exact_calls( [
PresentDialog_Confirm_Call( MESSAGE ),
PresentDialog_Confirm_Call( MESSAGE ),
] )
ignore_extra_conf.assert_has_calls( [
ignore_extra_conf.assert_has_exact_calls( [
call( FILE_NAME ),
call( FILE_NAME ),
] )