AO3-4730 - Add Cucumber output formatter (#2647)

.travis.yml

@@ -4,20 +4,20 @@ sudo: required
 env:
   - TEST_GROUP="./script/check_syntax"
   - TEST_GROUP="rspec spec"
-  - TEST_GROUP="cucumber -f progress -r features features/admins"
-  - TEST_GROUP="cucumber -f progress -r features features/bookmarks"
-  - TEST_GROUP="cucumber -f progress -r features features/collections"
-  - TEST_GROUP="cucumber -f progress -r features features/comments_and_kudos"
-  - TEST_GROUP="cucumber -f progress -r features features/gift_exchanges"
-  - TEST_GROUP="cucumber -f progress -r features features/importing"
-  - TEST_GROUP="cucumber -f progress -r features features/other_a"
-  - TEST_GROUP="cucumber -f progress -r features features/other_b"
-  - TEST_GROUP="cucumber -f progress -r features features/prompt_memes_a"
-  - TEST_GROUP="cucumber -f progress -r features features/prompt_memes_b"
-  - TEST_GROUP="cucumber -f progress -r features features/prompt_memes_c"
-  - TEST_GROUP="cucumber -f progress -r features features/tags_and_wrangling"
-  - TEST_GROUP="cucumber -f progress -r features features/users"
-  - TEST_GROUP="cucumber -f progress -r features features/works"
+  - TEST_GROUP="cucumber -r features features/admins             -f Ao3Cucumber::Formatter --color"
+  - TEST_GROUP="cucumber -r features features/bookmarks          -f Ao3Cucumber::Formatter --color"
+  - TEST_GROUP="cucumber -r features features/collections        -f Ao3Cucumber::Formatter --color"
+  - TEST_GROUP="cucumber -r features features/comments_and_kudos -f Ao3Cucumber::Formatter --color"
+  - TEST_GROUP="cucumber -r features features/gift_exchanges     -f Ao3Cucumber::Formatter --color"
+  - TEST_GROUP="cucumber -r features features/importing          -f Ao3Cucumber::Formatter --color"
+  - TEST_GROUP="cucumber -r features features/other_a            -f Ao3Cucumber::Formatter --color"
+  - TEST_GROUP="cucumber -r features features/other_b            -f Ao3Cucumber::Formatter --color"
+  - TEST_GROUP="cucumber -r features features/prompt_memes_a     -f Ao3Cucumber::Formatter --color"
+  - TEST_GROUP="cucumber -r features features/prompt_memes_b     -f Ao3Cucumber::Formatter --color"
+  - TEST_GROUP="cucumber -r features features/prompt_memes_c     -f Ao3Cucumber::Formatter --color"
+  - TEST_GROUP="cucumber -r features features/tags_and_wrangling -f Ao3Cucumber::Formatter --color"
+  - TEST_GROUP="cucumber -r features features/users              -f Ao3Cucumber::Formatter --color"
+  - TEST_GROUP="cucumber -r features features/works              -f Ao3Cucumber::Formatter --color"
 rvm:
   - "2.2.5"
 services:

features/support/elapsed_time.rb

@@ -0,0 +1,6 @@
+module ElapsedTime
+  def print_elapsed_time(io, start_time)
+    elapsed_time = (((Time.now - start_time) * 100).to_i / 100.0)
+    io.print " (#{elapsed_time}s)"
+  end
+end

features/support/formatter.rb

@@ -0,0 +1,37 @@
+# Adapted from https://github.com/tpope/fivemat
+require 'cucumber/formatter/progress'
+module Ao3Cucumber
+  class Formatter < ::Cucumber::Formatter::Progress
+    include ElapsedTime
+
+    def label(feature)
+      feature.short_name
+    end
+
+    def before_feature(feature)
+      @io.print "#{label(feature)}\n"
+      @io.flush
+      @exceptions = []
+      @start_time = Time.now
+    end
+
+    def after_feature(_)
+      print_elapsed_time @io, @start_time
+      @io.puts
+
+      @exceptions.each do |(exception, status)|
+        print_exception(exception, status, 2)
+      end
+    end
+
+    def exception(exception, status)
+      @exceptions << [exception, status]
+    end
+
+    def after_features(_)
+      @io.puts
+      print_snippets(@options)
+      print_passing_wip(@options)
+    end
+  end
+end