#2132 - Implement deferred command handling for linters

test/test_deferred_command_string.vader

@@ -0,0 +1,46 @@
+Before:
+  Save g:ale_run_synchronously
+  Save g:ale_emulate_job_failure
+  Save g:ale_buffer_info
+
+  let g:ale_run_synchronously = 1
+  let g:ale_buffer_info = {}
+  let b:ale_history = []
+
+  call ale#linter#Reset()
+  call ale#assert#SetUpLinterTestCommands()
+  call ale#linter#Define('foobar', {
+  \ 'name': 'lint_file_linter',
+  \ 'callback': 'LintFileCallback',
+  \ 'executable': 'echo',
+  \ 'command': {b -> ale#command#Run(b, 'echo', {-> ale#command#Run(b, 'echo', {-> 'foo'})})},
+  \ 'read_buffer': 0,
+  \})
+
+After:
+  Restore
+
+  call ale#assert#TearDownLinterTest()
+
+Given foobar (Some imaginary filetype):
+Execute(It should be possible to compute an executable to check based on the result of commands):
+  AssertLinter 'echo', 'foo'
+
+  ALELint
+  call ale#test#FlushJobs()
+
+  AssertEqual
+  \ 1,
+  \ len(filter(copy(b:ale_history), 'string(v:val.command) =~# ''foo'''))
+
+Execute(It handle the deferred command failing):
+  let g:ale_emulate_job_failure = 1
+
+  AssertLinter 'echo', 0
+
+  ALELint
+  call ale#test#FlushJobs()
+
+  AssertEqual
+  \ 0,
+  \ len(filter(copy(b:ale_history), 'string(v:val.command) =~# ''foo'''))

test/test_deferred_executable_string.vader

@@ -1,9 +1,11 @@
 Before:
   Save g:ale_run_synchronously
+  Save g:ale_emulate_job_failure
   Save g:ale_buffer_info
 
   let g:ale_run_synchronously = 1
   let g:ale_buffer_info = {}
+  let b:ale_history = []
 
   call ale#linter#Reset()
   call ale#assert#SetUpLinterTestCommands()
@@ -22,8 +24,6 @@ After:
 
 Given foobar (Some imaginary filetype):
 Execute(It should be possible to compute an executable to check based on the result of commands):
-  let b:ale_history = []
-
   AssertLinter 'foo', 'echo'
 
   ALELint
@@ -32,3 +32,15 @@ Execute(It should be possible to compute an executable to check based on the res
   AssertEqual
   \ [{'status': 0, 'job_id': 'executable', 'command': 'foo'}],
   \ filter(copy(b:ale_history), 'v:val.job_id is# ''executable''')
+
+Execute(It handle the deferred command failing):
+  let g:ale_emulate_job_failure = 1
+
+  AssertLinter 0, 'echo'
+
+  ALELint
+  call ale#test#FlushJobs()
+
+  AssertEqual
+  \ [],
+  \ filter(copy(b:ale_history), 'v:val.job_id is# ''executable''')

test/test_linter_defintion_processing.vader

@@ -82,7 +82,15 @@ Execute (PreProcess should throw when command is not a string):
   \ 'executable': 'echo',
   \ 'command': [],
   \})
-  AssertEqual '`command` must be a string if defined', g:vader_exception
+  AssertEqual '`command` must be a String or Function if defined', g:vader_exception
+
+Execute (PreProcess should allow command to be a callback):
+  call ale#linter#PreProcess('testft', {
+  \ 'name': 'foo',
+  \ 'callback': 'SomeFunction',
+  \ 'executable': 'echo',
+  \ 'command': function('type'),
+  \})
 
 Execute (PreProcess should throw when command_callback is not a callback):
   AssertThrows call ale#linter#PreProcess('testft', {