1 #####################################################################

     2 ###	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

     3 #####################################################################

     4 

     5 require 'rake/tasklib'

     6 

     7 #

     8 # Work around the inexplicable behaviour of the original RDoc::VerifyTask, which 

     9 # errors if your coverage isn't *exactly* the threshold.

    10 # 

    11 

    12 # A task that can verify that the RCov coverage doesn't

    13 # drop below a certain threshold. It should be run after

    14 # running Spec::Rake::SpecTask.

    15 class VerifyTask < Rake::TaskLib

    16 	

    17 	COVERAGE_PERCENTAGE_PATTERN = 

    18 		%r{<tt class='coverage_code'>(\d+\.\d+)%</tt>}

    19 	

    20 	# Name of the task. Defaults to :verify_rcov

    21 	attr_accessor :name

    22 

    23 	# Path to the index.html file generated by RCov, which

    24 	# is the file containing the total coverage.

    25 	# Defaults to 'coverage/index.html'

    26 	attr_accessor :index_html

    27 

    28 	# Whether or not to output details. Defaults to true.

    29 	attr_accessor :verbose

    30 

    31 	# The threshold value (in percent) for coverage. If the 

    32 	# actual coverage is not equal to this value, the task will raise an 

    33 	# exception. 

    34 	attr_accessor :threshold

    35 

    36 	def initialize( name=:verify )

    37 		@name = name

    38 		@index_html = 'coverage/index.html'

    39 		@verbose = true

    40 		yield self if block_given?

    41 		raise "Threshold must be set" if @threshold.nil?

    42 		define

    43 	end

    44 

    45 	def define

    46 		desc "Verify that rcov coverage is at least #{threshold}%"

    47 

    48 		task @name do

    49 			total_coverage = nil

    50 			if match = File.read( index_html ).match( COVERAGE_PERCENTAGE_PATTERN )

    51 				total_coverage = Float( match[1] )

    52 			else

    53 				raise "Couldn't find the coverage percentage in #{index_html}"

    54 			end

    55 

    56 			puts "Coverage: #{total_coverage}% (threshold: #{threshold}%)" if verbose

    57 			if total_coverage < threshold

    58 				raise "Coverage must be at least #{threshold}% but was #{total_coverage}%"

    59 			end

    60 		end

    61 	end

    62 end

    63 

    64 # vim: set nosta noet ts=4 sw=4: