rake/verifytask.rb
author Michael Granger <mgranger@laika.com>
Wed, 06 Aug 2008 17:32:19 +0000
changeset 7 c0498b8148c5
parent 1 1d3cfd4837a8
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Trying to fix the build by requiring the Darkfish-Rdoc gem.
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#####################################################################
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###	S U B V E R S I O N   T A S K S   A N D   H E L P E R S
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#####################################################################
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require 'rake/tasklib'
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#
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# Work around the inexplicable behaviour of the original RDoc::VerifyTask, which 
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# errors if your coverage isn't *exactly* the threshold.
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# 
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# A task that can verify that the RCov coverage doesn't
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# drop below a certain threshold. It should be run after
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# running Spec::Rake::SpecTask.
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class VerifyTask < Rake::TaskLib
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	COVERAGE_PERCENTAGE_PATTERN = 
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		%r{<tt class='coverage_code'>(\d+\.\d+)%</tt>}
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	# Name of the task. Defaults to :verify_rcov
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	attr_accessor :name
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	# Path to the index.html file generated by RCov, which
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	# is the file containing the total coverage.
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	# Defaults to 'coverage/index.html'
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	attr_accessor :index_html
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	# Whether or not to output details. Defaults to true.
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	attr_accessor :verbose
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	# The threshold value (in percent) for coverage. If the 
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	# actual coverage is not equal to this value, the task will raise an 
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	# exception. 
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	attr_accessor :threshold
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	def initialize( name=:verify )
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		@name = name
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		@index_html = 'coverage/index.html'
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		@verbose = true
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		yield self if block_given?
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		raise "Threshold must be set" if @threshold.nil?
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		define
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	end
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	def define
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		desc "Verify that rcov coverage is at least #{threshold}%"
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		task @name do
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			total_coverage = nil
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			if match = File.read( index_html ).match( COVERAGE_PERCENTAGE_PATTERN )
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				total_coverage = Float( match[1] )
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			else
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				raise "Couldn't find the coverage percentage in #{index_html}"
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			end
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			puts "Coverage: #{total_coverage}% (threshold: #{threshold}%)" if verbose
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			if total_coverage < threshold
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				raise "Coverage must be at least #{threshold}% but was #{total_coverage}%"
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			end
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		end
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	end
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end
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# vim: set nosta noet ts=4 sw=4: