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ale/test/command_callback/test_prospector_command_callback.vader
Eddie Lebow 56e67c5811 Add python_[linter]_auto_pipenv options for python linters (fixes #1656)
When set to true, and the buffer is currently inside a pipenv,
GetExecutable will return "pipenv", which will trigger the existing
functionality to append the correct pipenv arguments to run each linter.

Defaults to false.

I was going to implement ale#python#PipenvPresent by invoking
`pipenv --venv` or `pipenv --where`, but it seemed to be abominably
slow, even to the point where the test suite wasn't even finishing
("Tried to run tests 3 times"). The diff is:

diff --git a/autoload/ale/python.vim b/autoload/ale/python.vim
index 7baae079..8c100d41 100644
--- a/autoload/ale/python.vim
+++ b/autoload/ale/python.vim
@@ -106,5 +106,9 @@ endfunction

" Detects whether a pipenv environment is present.
function! ale#python#PipenvPresent(buffer) abort
-    return findfile('Pipfile.lock', expand('#' . a:buffer . ':p:h') . ';') isnot# ''
+    let l:cd_string = ale#path#BufferCdString(a:buffer)
+    let l:output = systemlist(l:cd_string . 'pipenv --where')[0]
+    " `pipenv --where` returns the path to the dir containing the Pipfile
+    " if in a pipenv, or some error text otherwise.
+    return strpart(l:output, 0, 18) !=# "No Pipfile present"
 endfunction

Using vim's `findfile` is much faster, behaves correctly in the majority
of situations, and also works reliably when the `pipenv` command doesn't
exist.
2018-09-15 22:10:46 -04:00

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Before:
call ale#assert#SetUpLinterTest('python', 'prospector')
After:
call ale#assert#TearDownLinterTest()
Execute(Setting executable to 'pipenv' appends 'run prospector'):
let g:ale_python_prospector_executable = 'path/to/pipenv'
AssertLinter 'path/to/pipenv',
\ ale#Escape('path/to/pipenv') . ' run prospector'
\ . ' --messages-only --absolute-paths --zero-exit --output-format json %s'
Execute(Pipenv is detected when python_prospector_auto_pipenv is set):
let g:ale_python_prospector_auto_pipenv = 1
call ale#test#SetFilename('/testplugin/test/python_fixtures/pipenv/whatever.py')
AssertLinter 'pipenv',
\ ale#Escape('pipenv') . ' run prospector'
\ . ' --messages-only --absolute-paths --zero-exit --output-format json %s'