For the courius; try to execute the attached code by
requiring it on the commandline.
ruby -rcoverage helloworld.rb
That should output a 'helloworld.rb.coverage.html' file.
--
Simon Strandgaard
module PrettyCoverage
class HTML
def initialize
@files = {}
end
def execute
puts "execute"
create_file_index
@files.each{|file, line_marked|
create_file(file, line_marked)
}
end
def mk_filename(name)
name+".coverage.html"
end
def create_file_index
output_filename = "index.html"
rows = []
@files.each{|file, line_marked|
filename = mk_filename(file)
rows << "<tr><td><a href=\"#{filename}\">#{file}</a></td></tr>"
}
result = rows.join("\n")
body = "<table>#{result}</table>"
title = "coverage"
css = <<EOCSS
body {
background-color: rgb(180, 180, 180);
}
div.marked {
background-color: rgb(185, 200, 200);
}
div.overview {
border-bottom: 8px solid black;
}
EOCSS
html = <<EOHTML
<html><head><title>#{title}</title>
<style type="text/css">#{css}</style></head>
<body>#{body}</body></html>
EOHTML
File.open(output_filename, "w+") do |f|
f.puts html
end
end
def add_file(file, line_marked)
percent = calc_coverage(line_marked)
printf("file=#{file} coverage=%02.1f%\n", percent)
# comments and empty lines.. we must
# propagate marked-value backwards
line_marked << ["", false]
(line_marked.size).downto(1) do |index|
line, marked = line_marked[index-1]
next_line, next_marked = line_marked[index]
if line =~ /^\s*(#|$)/ and marked == false
marked = next_marked
#line = "hest" + line
line_marked[index-1] = [line, marked]
end
end
line_marked.pop
@files[file] = line_marked
end
def calc_coverage(line_marked)
marked = line_marked.transpose[1]
n = marked.inject(0) {|r, i| (i) ? (r+1) : r }
percent = n.to_f * 100 / marked.size
end
def format_overview(file, line_marked)
percent = "%02.1f" % calc_coverage(line_marked)
html = <<EOHTML
<div class="overview">
<table>
<tr><td>filename</td><td><tt>#{file}</tt></td></tr>
<tr><td>coverage</td><td>#{percent}</td></tr>
</table>
</div>
EOHTML
html
end
def format_lines(line_marked)
result = ""
last = nil
end_of_div = ""
format_line = "%#{line_marked.size.to_s.size}d"
line_no = 1
line_marked.each {|(line, marked)|
if marked != last
result += end_of_div
case marked
when true
result += "<div class=\"marked\">"
end_of_div = "</div>"
when false
end_of_div = ""
end
end
result += (format_line % line_no) + " " + line + "\n"
last = marked
line_no += 1
}
result += end_of_div
"<pre>#{result}</pre>"
end
def create_file(file, line_marked)
output_filename = mk_filename(file)
puts "outputting #{output_filename.inspect}"
body =
format_overview(file, line_marked) +
format_lines(line_marked)
title = file + " - coverage"
css = <<EOCSS
body {
background-color: rgb(180, 180, 180);
}
div.marked {
background-color: rgb(185, 200, 200);
}
div.overview {
border-bottom: 8px solid black;
}
EOCSS
html = <<EOHTML
<html><head><title>#{title}</title>
<style type="text/css">#{css}</style></head>
<body>#{body}</body></html>
EOHTML
File.open(output_filename, "w+") do |f|
f.puts html
end
end
end
end
SCRIPT_LINES__ = {} unless defined? SCRIPT_LINES__
module COVERAGE__
COVER = {}
def self.trace_func(event, file, line, id, binding, klass)
case event
when 'c-call', 'c-return', 'class'
return
end
COVER[file] ||= []
COVER[file][line] ||= 0
COVER[file][line] += 1
end
END {
set_trace_func(nil)
printer = PrettyCoverage::HTML.new
COVER.each do |file, lines|
next if SCRIPT_LINES__.has_key?(file) == false
lines = SCRIPT_LINES__[file]
covers = COVER[file]
line_status = []
0.upto(lines.size - 1) do |c|
line = lines[c].chomp
marked = false
if covers[c + 1]
marked = true
elsif
trace_func).to_proc)