lib/testrbl.rb in testrbl-0.7.0 vs lib/testrbl.rb in testrbl-0.8.0

@@ -112,12 +112,24 @@
         end
       end
     end
 
     def changed_files
-      changed_files = `git status -s`.split("\n").map { |l| l.strip.split(/\s+/, 2)[1] }
-      raise "Failed: #{changed_files}" unless $?.success?
+      changed_files = sh("git status -s").split("\n").map { |l| l.strip.split(/\s+/, 2)[1] }
+
+      if changed_files.empty?
+        # user wants to test last commit and not current diff
+        changed_files = sh("git show --name-only").split("\n\n").last.split("\n")
+      end
+
+      # we only want test files that were added or changed (not deleted)
       changed_files.select { |f| f =~ /_(test|spec)\.rb$/ && File.exist?(f) }
+    end
+
+    def sh(command)
+      result = `#{command}`
+      raise "Failed: #{command} -> #{result}" unless $?.success?
+      result
     end
 
     def ruby
       if File.file?("Gemfile")
         ["ruby", "-rbundler/setup"] # faster then bundle exec ruby