Added --strict switch

History.txt

@@ -53,9 +53,9 @@ More blurb ideas
 * TODO Autotest uses file:line instead of --scenario (current impl doesn't work on Windows)
 
 === New features
-* TODO: --strict (Fail if there are missing or pending steps)
 * TODO: Autoformatting (--autoformat -a)
 * TODO: "Background" section
+* New --strict option exits with an error code if there are undefined or pending steps.
 * Filtering with --tags. If you put @various @tags on your features and scenarios, --tags lets you run a subset of them.
 * Given, When, Then are automatically aliased to current language. 
   Ruby 1.8 doesn't allow non-ascii method names in the source, so unless you're on 1.9

features/cucumber_cli.feature

@@ -18,6 +18,22 @@ Feature: Cucumber command line
       
       """
 
+  Scenario: Fail with --strict
+    When I run cucumber -q features/sample.feature:5 --strict
+    Then it should fail with
+      """
+      @one
+      Feature: Sample
+
+        @two @three
+        Scenario: Missing
+          Given missing
+
+      1 scenario
+      1 undefined step
+
+      """
+
   Scenario: Specify 2 line numbers where one is a tag
     When I run cucumber -q features/sample.feature:5:14
     Then it should fail with

features/step_definitions/extra_steps.rb

@@ -1,2 +1,2 @@
 Given /^missing$/ do
-end
+end

lib/cucumber/cli.rb

@@ -41,6 +41,7 @@ def Kernel.flush
       @error_stream = error_stream
       @paths = []
       @options = {
+        :strict   => false,
         :require  => nil,
         :lang     => 'en',
         :dry_run  => false,
@@ -147,9 +148,12 @@ def parse_options!(args)
         opts.on("-q", "--quiet", "Alias for --no-snippets --no-source.") do
           @quiet = true
         end
-        opts.on("-b", "--backtrace", "Show full backtrace for all errors") do
+        opts.on("-b", "--backtrace", "Show full backtrace for all errors.") do
           Exception.cucumber_full_backtrace = true
         end
+        opts.on("--strict", "Fail if there are any undefined or pending steps.") do
+          @options[:strict] = true
+        end
         opts.on("-v", "--verbose", "Show the files and features loaded.") do
           @options[:verbose] = true
         end
@@ -184,7 +188,9 @@ def execute!(step_mother)
       visitor = build_formatter_broadcaster(step_mother)
       visitor.options = @options
       visitor.visit_features(features)
-      Kernel.exit features.steps[:failed].length
+      exit_code = features.steps[:failed].length
+      exit_code += (features.steps[:undefined].length + features.steps[:pending].length) if @options[:strict]
+      Kernel.exit(exit_code)
     end
 
     private