Use vim ruby block helpers plugin

vim/ruby_mappings.vim

@@ -1,27 +1,7 @@
-let s:context_start_pattern =
-    \ '\C^\s*#\@!\s*\%(RSpec\.\)\=\zs' .
-    \ '\<\%(module\|class\|if\|for\|while\|until\|case\|unless\|begin\|def' .
-    \ '\|\%(public\|protected\|private\)\=\s*def\):\@!\>' .
-    \ '\|\%(^\|[^.:@$]\)\@<=\<do:\@!\>'
-let s:context_end_pattern = '\%(^\|[^.:@$]\)\@<=\<end:\@!\>'
-let s:context_test_pattern =
-    \ '\C^\s*#\@!\s*\%(RSpec\.\)\=\zs' .
-    \ '\<\%(describe\|context\|shared_examples\|shared_context\)\>'
-
 function! TestContext()
   wall
-  normal 0
   let [_, lnum, cnum, _] = getpos('.')
-  if getline('.') !~ s:context_test_pattern
-    let prev_line = line('.')
-    while line('.') != 1
-      call searchpair(s:context_start_pattern, '', s:context_end_pattern, 'Wb')
-      if getline('.') =~ s:context_test_pattern || line('.') == prev_line
-        break
-      endif
-      let prev_line = line('.')
-    endwhile
-  endif
+  RubyBlockSpecParentContext
   TestNearest
   call cursor(lnum, cnum)
 endfunction

vimrc.bundles

@@ -13,6 +13,7 @@ Plug 'benmills/vimux'
 Plug 'bkad/CamelCaseMotion'
 Plug 'chase/vim-ansible-yaml'
 Plug 'davidzchen/vim-bazel'
+Plug 'dewyze/vim-ruby-block-helpers'
 Plug 'ddrscott/vim-side-search'
 Plug 'derekwyatt/vim-scala'
 Plug 'ekalinin/Dockerfile.vim'