2 files changed, 35 insertions, 0 deletions
diff --git a/autoload/ale/assert.vim b/autoload/ale/assert.vim
index 87798520..a1bfd0b7 100644
--- a/autoload/ale/assert.vim
+++ b/autoload/ale/assert.vim
@@ -101,6 +101,14 @@ function! ale#assert#LSPProject(expected_root) abort
     AssertEqual a:expected_root, l:root
 endfunction
 
+function! ale#assert#LSPAddress(expected_address) abort
+    let l:buffer = bufnr('')
+    let l:linter = s:GetLinter()
+    let l:address = ale#util#GetFunction(l:linter.address_callback)(l:buffer)
+
+    AssertEqual a:expected_address, l:address
+endfunction
+
 " A dummy function for making sure this module is loaded.
 function! ale#assert#SetUpLinterTest(filetype, name) abort
     " Set up a marker so ALE doesn't create real random temporary filenames.
@@ -141,6 +149,7 @@ function! ale#assert#SetUpLinterTest(filetype, name) abort
     command! -nargs=+ AssertLSPOptions :call ale#assert#LSPOptions(<args>)
     command! -nargs=+ AssertLSPLanguage :call ale#assert#LSPLanguage(<args>)
     command! -nargs=+ AssertLSPProject :call ale#assert#LSPProject(<args>)
+    command! -nargs=+ AssertLSPAddress :call ale#assert#LSPAddress(<args>)
 endfunction
 
 function! ale#assert#TearDownLinterTest() abort
@@ -171,6 +180,10 @@ function! ale#assert#TearDownLinterTest() abort
         delcommand AssertLSPProject
     endif
 
+    if exists(':AssertLSPAddress')
+        delcommand AssertLSPAddress
+    endif
+
     if exists('g:dir')
         call ale#test#RestoreDirectory()
     endif
diff --git a/autoload/ale/ruby.vim b/autoload/ale/ruby.vim
index b981ded6..f0d84296 100644
--- a/autoload/ale/ruby.vim
+++ b/autoload/ale/ruby.vim
@@ -20,3 +20,25 @@ function! ale#ruby#FindRailsRoot(buffer) abort
 
     return ''
 endfunction
+
+" Find the nearest dir containing a potential ruby project.
+function! ale#ruby#FindProjectRoot(buffer) abort
+    let l:dir = ale#ruby#FindRailsRoot(a:buffer)
+
+    if isdirectory(l:dir)
+      return l:dir
+    endif
+
+    for l:name in ['Rakefile', 'Gemfile']
+        let l:dir = fnamemodify(
+        \   ale#path#FindNearestFile(a:buffer, l:name),
+        \   ':h'
+        \)
+
+        if l:dir isnot# '.' && isdirectory(l:dir)
+            return l:dir
+        endif
+    endfor
+
+    return ''
+endfunction