From: Dave Thomas <Dave@...>
Date: 2000-12-30T15:29:42+09:00
Subject: [ruby-talk:8342] Re: open3 woes [sort of long]

Holden Glova <dsafari@paradise.net.nz> writes:

> Ok, granted my test is set up to fail, but I wrote this simply to
> make sure that the correct data was coming to stdout. Why does it
> seem to append the entire contents of the file I pass to
> RuntimeInterpreter#invoke to itself?

Well, I can't reproduce it here:


useless.rb

     class Useless
       def meth
         puts "Useless method in a useless class"
       end
     end
     u = Useless.new()
     u.meth()


t.rb

     require 'open3'

     class RuntimeInterpreter
       def invoke(file)
         streams = Open3.popen3("ruby -w #{file}")
         streams.at(1).each() { |line|
           puts line
         }
      end
     end

     require 'runit/testcase'

     class Test_RuntimeInterpreter < RUNIT::TestCase
       def testInvoke
         interpreter = RuntimeInterpreter.new()
         result = interpreter.invoke("../useless.rb")
         assert(result == "Useless method in a useless class")
       end
     end

     if __FILE__ == $0
       require 'runit/cui/testrunner'
       suite = RUNIT::TestSuite.new

       suite.add_test(Test_RuntimeInterpreter.suite)
       RUNIT::CUI::TestRunner.run(suite)
     end


dave[~/tmp 0:26:40] ruby t.rb
Test_RuntimeInterpreter#testInvoke F.
Time: 0.024983
FAILURES!!!
Test Results:
 Run: 1/1(1 asserts) Failures: 1 Errors: 0
Failures: 1
t.rb:21:in `testInvoke': The condition is <false:FalseClass> (RUNIT::AssertionFailedError)
        from t.rb:30
dave[~/tmp 0:26:44] cat useless.rb
class Useless
        def meth
                puts "Useless method in a useless class"
        end
end
u = Useless.new()
u.meth()


I ran it several times with the same result.

Are you using rubywin?


Dave