Allow clangformat to use a local style file (#3587)

* Allow clangformat to use a local style file.

* Add tests.

* Fix Vint issue.

* Improve explanation of feature in documentation.

* Fix failing test.

The test was checking the wrong directory.

1 files changed, 29 insertions, 0 deletions

diff --git a/test/fixers/test_clangformat_fixer_callback.vader b/test/fixers/test_clangformat_fixer_callback.vader
index ae7db4cf..b9b74ee8 100644
--- a/test/fixers/test_clangformat_fixer_callback.vader
+++ b/test/fixers/test_clangformat_fixer_callback.vader
@@ -1,5 +1,7 @@
 Before:
   Save g:ale_c_clangformat_executable
+  Save g:c_clangformat_style_option
+  Save g:c_clangformat_use_local_file
 
   " Use an invalid global executable, so we don't match it.
   let g:ale_c_clangformat_executable = 'xxxinvalid'
@@ -35,3 +37,30 @@ Execute(The clangformat callback should include any additional options):
   \     . ' --some-option',
   \ },
   \ ale#fixers#clangformat#Fix(bufnr(''))
+
+Execute(The clangformat callback should include style options as well):
+  call ale#test#SetFilename('c_paths/dummy.c')
+  let g:ale_c_clangformat_options = '--some-option'
+  let g:ale_c_clangformat_style_option = '{BasedOnStyle: Microsoft, ColumnLimit:80,}'
+
+  AssertEqual
+  \ {
+  \   'command': ale#Escape(g:ale_c_clangformat_executable)
+  \     . ' --assume-filename=' . ale#Escape(bufname(bufnr('')))
+  \     . ' --some-option' . " -style='{BasedOnStyle: Microsoft, ColumnLimit:80,}'",
+  \ },
+  \ ale#fixers#clangformat#Fix(bufnr(''))
+
+Execute(The clangformat callback should use local file instead of style options):
+  call ale#test#SetFilename('clangformat_paths/with_clangformat/dummy.c')
+  let g:ale_c_clangformat_options = '--some-option'
+  let g:ale_c_clangformat_style_option = '{BasedOnStyle: Microsoft, ColumnLimit:80,}'
+  let g:ale_c_clangformat_use_local_file = 1
+
+  AssertEqual
+  \ {
+  \   'command': ale#Escape(g:ale_c_clangformat_executable)
+  \     . ' --assume-filename=' . ale#Escape(bufname(bufnr('')))
+  \     . ' --some-option' . ' -style=file',
+  \ },
+  \ ale#fixers#clangformat#Fix(bufnr(''))