From 36082a2da225cd0f213a193dfdfc4c7d618c3640 Mon Sep 17 00:00:00 2001
From: Andrew Bloomgarden <stalkingtiger@gmail.com>
Date: Tue, 7 Sep 2010 21:52:40 -0700
Subject: [PATCH] Futureport RSpex 1.x's Rcov::VerifyTask.

---
 Rakefile            | 16 +++++++-------
 spec/verify_rcov.rb | 52 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 60 insertions(+), 8 deletions(-)
 create mode 100644 spec/verify_rcov.rb

diff --git a/Rakefile b/Rakefile
index d0c745f..d82b624 100644
--- a/Rakefile
+++ b/Rakefile
@@ -3,7 +3,7 @@ rspec_base = File.expand_path(File.dirname(__FILE__) + '/../rspec/lib')
 $LOAD_PATH.unshift(rspec_base) if File.exist?(rspec_base) and !$LOAD_PATH.include?(rspec_base)
 
 require 'rspec/core/rake_task'
-#require 'spec/rake/verify_rcov'
+require 'spec/verify_rcov' # a local file future-ported from RSpec 1.x
 
 plugin_name = 'resources_controller'
 
@@ -22,13 +22,13 @@ RSpec::Core::RakeTask.new(:rcov) do |t|
   t.rcov_opts   = ['--output', 'doc/coverage','--text-report', '--exclude', "gems/,spec/,rcov.rb,#{File.expand_path(File.join(File.dirname(__FILE__),'../../..'))}"] 
 end
 
-# namespace :rcov do
-#   desc "Verify RCov threshold for #{plugin_name}"
-#   RCov::VerifyTask.new(:verify => :rcov) do |t|
-#     t.threshold = 100.0
-#     t.index_html = File.join(File.dirname(__FILE__), 'doc/coverage/index.html')
-#   end
-# end
+namespace :rcov do
+  desc "Verify RCov threshold for #{plugin_name}"
+  RCov::VerifyTask.new(:verify => :rcov) do |t|
+    t.threshold = 100.0
+    t.index_html = File.join(File.dirname(__FILE__), 'doc/coverage/index.html')
+  end
+end
 
 # load up the tasks for testing rspec generators against RC
 require File.join(File.dirname(__FILE__), 'spec/generate_rake_task')
diff --git a/spec/verify_rcov.rb b/spec/verify_rcov.rb
new file mode 100644
index 0000000..9423b47
--- /dev/null
+++ b/spec/verify_rcov.rb
@@ -0,0 +1,52 @@
+module RCov
+  # A task that can verify that the RCov coverage doesn't
+  # drop below a certain threshold. It should be run after
+  # running Spec::Rake::SpecTask.
+  class VerifyTask < Rake::TaskLib
+    # Name of the task. Defaults to :verify_rcov
+    attr_accessor :name
+    
+    # Path to the index.html file generated by RCov, which
+    # is the file containing the total coverage.
+    # Defaults to 'coverage/index.html'
+    attr_accessor :index_html
+    
+    # Whether or not to output details. Defaults to true.
+    attr_accessor :verbose
+    
+    # The threshold value (in percent) for coverage. If the 
+    # actual coverage is not equal to this value, the task will raise an 
+    # exception. 
+    attr_accessor :threshold
+    
+    # Require the threshold value be met exactly.  This is the default.
+    attr_accessor :require_exact_threshold
+    
+    def initialize(name=:verify_rcov)
+      @name = name
+      @index_html = 'coverage/index.html'
+      @verbose = true
+      @require_exact_threshold = true
+      yield self if block_given?
+      raise "Threshold must be set" if @threshold.nil?
+      define
+    end
+    
+    def define
+      desc "Verify that rcov coverage is at least #{threshold}%"
+      task @name do
+        total_coverage = 0
+
+        File.open(index_html).each_line do |line|
+          if line =~ /<tt class='coverage_total'>\s*(\d+\.\d+)%\s*<\/tt>/
+            total_coverage = $1.to_f
+            break
+          end
+        end
+        puts "Coverage: #{total_coverage}% (threshold: #{threshold}%)" if verbose
+        raise "Coverage must be at least #{threshold}% but was #{total_coverage}%" if total_coverage < threshold
+        raise "Coverage has increased above the threshold of #{threshold}% to #{total_coverage}%. You should update your threshold value." if (total_coverage > threshold) and require_exact_threshold
+      end
+    end
+  end
+end
\ No newline at end of file