I hope that someone here can identify what is going on as I am completely frustrated at the moment.
I am writing a custom rake task for rcov. The intent is top produce three variants of a test, each using slightly different options. This is the basic code:
R_RCOV_AGGREG_FILE = 'coverage.data'
# Use single quotes here so that regexp argument is not munged. R_RCOV_EXCLUDE_DIR = 'lib\/ruby,lib64\/ruby'
R_RCOV_OUTPUT_DIR = 'test_coverage'
R_RCOV_AGGREG_OPTS = "--aggregate #{R_RCOV_AGGREG_FILE} " + "--text-summary --no-html "
R_RCOV_BASIC_OPTS = [ " --rails ", " --exclude #{R_RCOV_EXCLUDE_DIR} " ]
R_RCOV_FINAL_OPTS = " --aggregate #{R_RCOV_AGGREG_FILE} "
R_RCOV_BROWSER = 'firefox'
# make the output directory an array. r_rcov_dir = R_RCOV_OUTPUT_DIR.scan(/\w+/)
[ 'single', 'aggregate', 'final' ].each do |reptype|
# Set the rcov options variables according to report type r_rcov_opta = nil if reptype == 'single' r_rcov_opta = R_RCOV_AGGREG_OPTS if reptype == 'aggregate' r_rcov_opta = R_RCOV_FINAL_OPTS if reptype == 'final'
# builds task int_testunit_X Rcov::RcovTask.new("int_testunit_#{reptype}") do |t| t.test_files = FileList['test/**/test*.rb'] t.libs << "test" t.output_dir = r_rcov_dir t.rcov_opts = R_RCOV_BASIC_OPTS t.rcov_opts << r_rcov_opta puts "testunit #{reptype} opts: #{R_RCOV_BASIC_OPTS} size " + "#{R_RCOV_BASIC_OPTS.size}" puts " " puts "testunit #{reptype} opta: #{r_rcov_opta}" puts " " puts "testunit #{reptype} options: #{t.rcov_opts}" puts " " t.verbose = true end end
The problem is this. Somewhere the constant value R_RCOV_BASIC_OPTS is being changed. A rake run using puts and displaying R_RCOV_BASIC_OPTS.size gives this output:
testunit single opts: --rails --exclude lib\/ruby,lib64\/ruby size 5
testunit single opta:
testunit single options: --rails --exclude lib\/ruby,lib64\/ruby
testunit aggregate opts: --rails --exclude lib\/ruby,lib64\/ruby --aggregate coverage.data --text-summary --no-html --aggregate coverage.data --text-summary --no-html --aggregate coverage.data --text-summary --no-html size 8
testunit aggregate opta: --aggregate coverage.data --text-summary --no-html
testunit aggregate options: --rails --exclude lib\/ruby,lib64\/ruby --aggregate coverage.data --text-summary --no-html --aggregate coverage.data --text-summary --no-html --aggregate coverage.data --text-summary --no-html
testunit final opts: --rails --exclude lib\/ruby,lib64\/ruby --aggregate coverage.data --text-summary --no-html --aggregate coverage.data --text-summary --no-html --aggregate coverage.data --text-summary --no-html --aggregate coverage.data --aggregate coverage.data --aggregate coverage.data size 11
testunit final opta: --aggregate coverage.data
testunit final options: --rails --exclude lib\/ruby,lib64\/ruby --aggregate coverage.data --text-summary --no-html --aggregate coverage.data --text-summary --no-html --aggregate coverage.data --text-summary --no-html --aggregate coverage.data --aggregate coverage.data --aggregate coverage.data
Checking my rake task lists only these places where R-RCOV_BASIC_OPTS is referenced:
22 R_RCOV_BASIC_OPTS = [ " --rails ", " --exclude #{R_RCOV_EXCLUDE_DIR} " ] 57 t.rcov_opts = R_RCOV_BASIC_OPTS 68 t.rcov_opts = R_RCOV_BASIC_OPTS 77 t.rcov_opts = R_RCOV_BASIC_OPTS 79 puts "testunit #{reptype} opts: #{R_RCOV_BASIC_OPTS} size " + 80 "#{R_RCOV_BASIC_OPTS.size}"
How is constant getting its value changed?
