#2395 - Handle empty output for redpen

test/command_callback/test_psalm_command_callbacks.vader

@@ -24,6 +24,9 @@ Execute(Vendor executables should be detected):
 
 Execute(The project path should be correct for .git directories):
   call ale#test#SetFilename('psalm-project/test.php')
-  call mkdir(g:dir . '/.git')
 
-  AssertLSPProject g:dir
+  if !isdirectory(g:dir . '/.git')
+    call mkdir(g:dir . '/.git')
+  endif
+
+  AssertLSPProject g:dir

test/handler/test_redpen_handler.vader

@@ -80,7 +80,7 @@ Execute(redpen handler should handle errors output):
   \   ']',
   \ ])
 
-Execute(redpen handler should no error output):
+Execute(The redpen handler should handle an empty error list):
   AssertEqual
   \ [],
   \ ale#handlers#redpen#HandleRedpenOutput(bufnr(''), [
@@ -91,3 +91,8 @@ Execute(redpen handler should no error output):
   \   '  }',
   \   ']',
   \ ])
+
+Execute(The redpen handler should handle totally empty output):
+  AssertEqual
+  \ [],
+  \ ale#handlers#redpen#HandleRedpenOutput(bufnr(''), [])