text: #!/usr/bin/python
  
  # Copyright 2003 Vladimir Prus
  # Distributed under the Boost Software License, Version 1.0.
  # (See accompanying file LICENSE_1_0.txt or copy at
  # http://www.boost.org/LICENSE_1_0.txt)
  
  import BoostBuild
  
  t = BoostBuild.Tester()
  
  # Regression test for double loading of the same Jamfile.
  t.write("jamroot.jam", "")
  t.write("jamfile.jam", "build-project subdir ;")
  t.write("subdir/jamfile.jam", 'ECHO "Loaded subdir" ;')
  
  t.run_build_system(subdir="subdir")
  t.expect_output_lines("Loaded subdir")
  
  
  # Regression test for a more contrived case. The top-level Jamfile refers to
  # subdir via use-project, while subdir's Jamfile is being loaded. The
  # motivation why use-project referring to subprojects is useful can be found
  # at: http://article.gmane.org/gmane.comp.lib.boost.build/3906
  t.write("jamroot.jam", "")
  t.write("jamfile.jam", "use-project /subdir : subdir ;")
  t.write("subdir/jamfile.jam", "project subdir ;")
  
  t.run_build_system(subdir="subdir");
  
  t.cleanup()
  