Add tests for Vim file and buffer operations
Refactor Vim mocking.
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@ -18,18 +18,23 @@
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# along with YouCompleteMe. If not, see <http://www.gnu.org/licenses/>.
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from mock import MagicMock
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import re
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import sys
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BUFNR_REGEX = re.compile( r"bufnr\('(.+)', ([0-9]+)\)" )
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# One-and only instance of mocked Vim object. The first 'import vim' that is
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# executed binds the vim module to the instance of MagicMock that is created,
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# and subsquent assignments to sys.modules[ 'vim' ] don't retrospectively update
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# them. The result is that while running the tests, we must assign only one
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# instance of MagicMock to sys.modules[ 'vim' ] and always return it.
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# and subsquent assignments to sys.modules[ 'vim' ] don't retrospectively
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# update them. The result is that while running the tests, we must assign only
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# one instance of MagicMock to sys.modules[ 'vim' ] and always return it.
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#
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# More explanation is available:
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# https://github.com/Valloric/YouCompleteMe/pull/1694
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VIM_MOCK = MagicMock()
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def MockVimModule():
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"""The 'vim' module is something that is only present when running inside the
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Vim Python interpreter, so we replace it with a MagicMock for tests. If you
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@ -55,8 +60,24 @@ def MockVimModule():
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def VimEval( value ):
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if value == "g:ycm_min_num_of_chars_for_completion":
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return 0
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if value == "g:ycm_path_to_python_interpreter":
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return ''
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if value == "tempname()":
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return '_TEMP_FILE_'
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if value == "&previewheight":
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# Default value from Vim
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return 12
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match = BUFNR_REGEX.search( value )
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if match:
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filename = match.group( 1 )
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buffers = VIM_MOCK.buffers
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if filename in buffers and buffers[ filename ]:
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return buffers[ filename ].pop( 0 )
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return -1
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raise ValueError( 'Unexpected evaluation: ' + value )
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VIM_MOCK.buffers = {}
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VIM_MOCK.eval = MagicMock( side_effect = VimEval )
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sys.modules[ 'vim' ] = VIM_MOCK
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@ -22,7 +22,9 @@ MockVimModule()
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from ycm import vimsupport
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from nose.tools import eq_
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from hamcrest import assert_that, calling, raises, none
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from mock import MagicMock, call, patch
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import os
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def ReplaceChunk_SingleLine_Repl_1_test():
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@ -582,17 +584,9 @@ def _BuildChunk( start_line, start_column, end_line, end_column,
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}
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def _Mock_tempname( arg ):
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if arg == 'tempname()':
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return '_TEMP_FILE_'
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raise ValueError( 'Unexpected evaluation: ' + arg )
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@patch( 'vim.eval', side_effect=_Mock_tempname )
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@patch( 'vim.command' )
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@patch( 'vim.current' )
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def WriteToPreviewWindow_test( vim_current, vim_command, vim_eval ):
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def WriteToPreviewWindow_test( vim_current, vim_command ):
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vim_current.window.options.__getitem__ = MagicMock( return_value = True )
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vimsupport.WriteToPreviewWindow( "test" )
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@ -615,9 +609,8 @@ def WriteToPreviewWindow_test( vim_current, vim_command, vim_eval ):
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], any_order = True )
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@patch( 'vim.eval', side_effect=_Mock_tempname )
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@patch( 'vim.current' )
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def WriteToPreviewWindow_MultiLine_test( vim_current, vim_eval ):
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def WriteToPreviewWindow_MultiLine_test( vim_current ):
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vim_current.window.options.__getitem__ = MagicMock( return_value = True )
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vimsupport.WriteToPreviewWindow( "test\ntest2" )
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@ -625,10 +618,9 @@ def WriteToPreviewWindow_MultiLine_test( vim_current, vim_eval ):
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slice( None, None, None ), [ 'test', 'test2' ] )
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@patch( 'vim.eval', side_effect=_Mock_tempname )
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@patch( 'vim.command' )
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@patch( 'vim.current' )
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def WriteToPreviewWindow_JumpFail_test( vim_current, vim_command, vim_eval ):
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def WriteToPreviewWindow_JumpFail_test( vim_current, vim_command ):
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vim_current.window.options.__getitem__ = MagicMock( return_value = False )
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vimsupport.WriteToPreviewWindow( "test" )
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@ -644,12 +636,9 @@ def WriteToPreviewWindow_JumpFail_test( vim_current, vim_command, vim_eval ):
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vim_current.buffer.options.__setitem__.assert_not_called()
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@patch( 'vim.eval', side_effect=_Mock_tempname )
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@patch( 'vim.command' )
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@patch( 'vim.current' )
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def WriteToPreviewWindow_JumpFail_MultiLine_test( vim_current,
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vim_command,
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vim_eval ):
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def WriteToPreviewWindow_JumpFail_MultiLine_test( vim_current, vim_command ):
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vim_current.window.options.__getitem__ = MagicMock( return_value = False )
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@ -665,3 +654,75 @@ def WriteToPreviewWindow_JumpFail_MultiLine_test( vim_current,
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vim_current.buffer.__setitem__.assert_not_called()
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vim_current.buffer.options.__setitem__.assert_not_called()
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def CheckFilename_test():
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assert_that(
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calling( vimsupport.CheckFilename ).with_args( None ),
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raises( RuntimeError, "'None' is not a valid filename" )
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)
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assert_that(
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calling( vimsupport.CheckFilename ).with_args( 'nonexistent_file' ),
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raises( RuntimeError,
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"filename 'nonexistent_file' cannot be opened. "
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"\[Errno 2\] No such file or directory: 'nonexistent_file'" )
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)
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assert_that( vimsupport.CheckFilename( __file__ ), none() )
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def BufferExistsForFilename_test():
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buffers = {
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os.path.realpath( 'some_filename' ): [ 1 ],
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}
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with patch.dict( 'vim.buffers', buffers ):
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eq_( vimsupport.BufferExistsForFilename( 'some_filename' ), True )
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eq_( vimsupport.BufferExistsForFilename( 'another_filename' ), False )
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@patch( 'vim.command' )
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def CloseBuffersForFilename_test( vim_command ):
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buffers = {
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os.path.realpath( 'some_filename' ): [ 2, 5 ],
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os.path.realpath( 'another_filename' ): [ 1 ]
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}
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with patch.dict( 'vim.buffers', buffers ):
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vimsupport.CloseBuffersForFilename( 'some_filename' )
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vim_command.assert_has_calls( [
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call( 'silent! bwipeout! 2' ),
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call( 'silent! bwipeout! 5' )
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], any_order = True )
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@patch( 'vim.command' )
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@patch( 'vim.current' )
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def OpenFilename_test( vim_current, vim_command ):
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# Options used to open a logfile
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options = {
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'size': vimsupport.GetIntValue( '&previewheight' ),
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'fix': True,
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'watch': True,
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'position': 'end'
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}
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vimsupport.OpenFilename( __file__, options )
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vim_command.assert_has_calls( [
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call( 'silent! 12split {0}'.format( __file__ ) ),
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call( "exec "
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"'au BufEnter <buffer> :silent! checktime {0}'".format( __file__ ) ),
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call( 'silent! normal G zz' ),
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call( 'silent! wincmd p' )
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] )
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vim_current.buffer.options.__setitem__.assert_has_calls( [
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call( 'autoread', True ),
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] )
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vim_current.window.options.__setitem__.assert_has_calls( [
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call( 'winfixheight', True )
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] )
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