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-rw-r--r--autoload/ale/linter.vim9
-rw-r--r--test/test_linter_defintion_processing.vader23
2 files changed, 32 insertions, 0 deletions
diff --git a/autoload/ale/linter.vim b/autoload/ale/linter.vim
index 0a5b9ae3..be173588 100644
--- a/autoload/ale/linter.vim
+++ b/autoload/ale/linter.vim
@@ -114,6 +114,15 @@ function! ale#linter#PreProcess(linter) abort
\ . 'must be defined'
endif
+ if (
+ \ has_key(a:linter, 'command')
+ \ + has_key(a:linter, 'command_chain')
+ \ + has_key(a:linter, 'command_callback')
+ \) > 1
+ throw 'Only one of `command`, `command_callback`, or `command_chain` '
+ \ . 'should be set'
+ endif
+
let l:obj.output_stream = get(a:linter, 'output_stream', 'stdout')
if type(l:obj.output_stream) != type('')
diff --git a/test/test_linter_defintion_processing.vader b/test/test_linter_defintion_processing.vader
index 4b5c6a76..969a8932 100644
--- a/test/test_linter_defintion_processing.vader
+++ b/test/test_linter_defintion_processing.vader
@@ -211,3 +211,26 @@ Execute(PreProcess should complain about invalid chain items at higher indices):
\}
AssertThrows call ale#linter#PreProcess(g:linter)
AssertEqual 'The `command_chain` item 1 must define a `callback` function', g:vader_exception
+
+Execute(PreProcess should complain when conflicting command options are used):
+ let g:linter = {
+ \ 'name': 'x',
+ \ 'callback': 'x',
+ \ 'executable': 'x',
+ \ 'command': 'foo',
+ \ 'command_chain': [{'callback': 'foo'}],
+ \}
+ AssertThrows call ale#linter#PreProcess(g:linter)
+ AssertEqual 'Only one of `command`, `command_callback`, or `command_chain` should be set', g:vader_exception
+
+ unlet g:linter.command
+ let g:linter.command_callback = 'foo'
+
+ AssertThrows call ale#linter#PreProcess(g:linter)
+ AssertEqual 'Only one of `command`, `command_callback`, or `command_chain` should be set', g:vader_exception
+
+ let g:linter.command = 'foo'
+ unlet g:linter.command_chain
+
+ AssertThrows call ale#linter#PreProcess(g:linter)
+ AssertEqual 'Only one of `command`, `command_callback`, or `command_chain` should be set', g:vader_exception