Regular expression hang ruby.exe

Hi,

I use an regular expression to verify that my string in time_on_site is
correct. This works when the string match, but if it doesn’t the test
get hanged. So I need to quit(ctrl+c) the script and also close ruby.exe
*32 in Task manager. Any ides how I can handle this?

time_on_site.should match(/^00:[0-5][0-9]$/)

Best regards
Mattias

If I use below it returns correct output. Can I use something similar
with Rspec so the test fails if its not true?

if time_on_site =~ /^00:[0-5][0-9]$/
puts “# Successful match”
else
puts “# Match attempt failed”
end