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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
def initialize(name=:verify_rcov)
@name = name
@index_html = 'coverage/index.html'
@verbose = 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 = nil
File.open(index_html).each_line do |line|
if line =~ /<tt.*>(\d+\.\d+)%<\/tt> <\/td>/
total_coverage = eval($1)
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
end
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems