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Windows

If you'd like to run Puppet from source on Windows platforms, the include ext/envpuppet.bat will help.

To quickly run Puppet from source, assuming you already have Ruby installed from rubyinstaller.org.

C:\> cd C:\work\puppet
C:\work\puppet> set PATH=%PATH%;C:\work\puppet\ext
C:\work\puppet> envpuppet bundle install
C:\work\puppet> envpuppet puppet --version
2.7.9

When writing a test that cannot possibly run on Windows, e.g. there is no mount type on windows, do the following:

describe Puppet::MyClass, :unless => Puppet.features.microsoft_windows? do
  ..
end

If the test doesn't currently pass on Windows, e.g. due to on going porting, then use an rspec conditional pending block:

pending("porting to Windows", :if => Puppet.features.microsoft_windows?) do
  <example1>
end

pending("porting to Windows", :if => Puppet.features.microsoft_windows?) do
  <example2>
end

Then run the test as:

C:\work\puppet> envpuppet bundle exec rspec spec

Common Issues

  • Don't assume file paths start with '/', as that is not a valid path on Windows. Use Puppet::Util.absolute_path? to validate that a path is fully qualified.

  • Use File.expand_path('/tmp') in tests to generate a fully qualified path that is valid on POSIX and Windows. In the latter case, the current working directory will be used to expand the path.

  • Always use binary mode when performing file I/O, unless you explicitly want Ruby to translate between unix and dos line endings. For example, opening an executable file in text mode will almost certainly corrupt the resulting stream, as will occur when using:

    IO.open(path, 'r') { |f| ... } IO.read(path)

    If in doubt, specify binary mode explicitly:

    IO.open(path, 'rb')

  • Don't assume file paths are separated by ':'. Use File::PATH_SEPARATOR instead, which is ':' on POSIX and ';' on Windows.

  • On Windows, File::SEPARATOR is '/', and File::ALT_SEPARATOR is ''. On POSIX systems, File::ALT_SEPARATOR is nil. In general, use '/' as the separator as most Windows APIs, e.g. CreateFile, accept both types of separators.

  • Don't use waitpid/waitpid2 if you need the child process' exit code, as the child process may exit before it has a chance to open the child's HANDLE and retrieve its exit code. Use Puppet::Util.execute.

  • Don't assume 'C' drive. Use environment variables to look these up:

    "#{ENV['windir']}/system32/netsh.exe"