lib/retest/options.rb in retest-0.9.0 vs lib/retest/options.rb in retest-1.0.0.pre

@@ -46,17 +46,28 @@
       example <<~EOS
       Let retest identify which command to run for all tests
         $ retest --all
         $ retest --auto --all
       EOS
+
+      example <<~EOS
+      Run a sanity check on changed files from a branch
+        $ retest --diff origin/main --rails
+        $ retest --diff main --auto
+      EOS
     end
 
     argument :command do
       optional
       desc <<~EOS
       The test command to rerun when a file changes.
       Use <test> placeholder to tell retest where to put the matching spec.
       EOS
+    end
+
+    option :diff do
+      desc "Pipes all matching tests from diffed branch to test command"
+      long "--diff=git-branch"
     end
 
     flag :all do
       long "--all"
       desc "Run all the specs of a specificied ruby setup"
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