text: #!/usr/bin/python
  
  # Copyright 2008 Jurko Gospodnetic
  # Distributed under the Boost Software License, Version 1.0.
  # (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
  
  # Tests that generators get selected correctly.
  
  import BoostBuild
  
  
  ################################################################################
  #
  # test_generator_added_after_already_building_a_target_of_its_target_type()
  # -------------------------------------------------------------------------
  #
  ################################################################################
  
  def test_generator_added_after_already_building_a_target_of_its_target_type():
      """Regression test for a Boost Build bug causing it to not use a generator
      if it got added after already building a targer of its target type.
      """
  
      t = BoostBuild.Tester()
  
      t.write("dummy.cpp", "void f() {}\n")
  
      t.write("jamroot.jam", """
  # Building this dummy target must not cause a later defined CPP target type
  # generator not to be recognized as viable.
  obj dummy : dummy.cpp ;
  alias the-other-obj : Other//other-obj ;
  """)
  
      t.write("Other/source.extension", "A dummy source file.")
  
      t.write("Other/mygen.jam", """
  import generators ;
  import os ;
  import type ;
  type.register MY_TYPE : extension ;
  generators.register-standard mygen.generate-a-cpp-file : MY_TYPE : CPP ;
  rule generate-a-cpp-file { ECHO Generating a CPP file... ; }
  if [ os.name ] = NT
  {
      actions generate-a-cpp-file { echo void g() {} > "$(<)" }
  }
  else
  {
      actions generate-a-cpp-file { echo "void g() {}" > "$(<)" }
  }
  """)
  
      t.write("Other/jamfile.jam", """
  import mygen ;
  obj other-obj : source.extension ;
  """)
  
      t.run_build_system()
      t.expect_output_line("Generating a CPP file...")
      t.expect_addition("bin/$toolset/debug/dummy.obj")
      t.expect_addition("Other/bin/$toolset/debug/other-obj.obj")
  
      t.cleanup()
  
  
  ################################################################################
  #
  # test_using_a_derived_source_type_created_after_generator_already_used()
  # -----------------------------------------------------------------------
  #
  ################################################################################
  
  def test_using_a_derived_source_type_created_after_generator_already_used():
      """Regression test for a Boost Build bug causing it to not use a generator
      with a source type derived from one of the generator's sources but created
      only after already using the generateor.
      """
  
      t = BoostBuild.Tester()
  
      t.write("dummy.cpp", "void f() {}\n")
  
      t.write("jamroot.jam", """
  # Building this dummy target must not cause a later defined UNGA_CPP target type
  # not to be recognized as a viable source type for building OBJ targets.
  obj dummy : dummy.cpp ;
  alias the-test-output : Other//other-obj ;
  """)
  
      t.write("Other/source.unga_cpp", "void g() {}\n")
  
      t.write("Other/jamfile.jam", """
  import type ;
  type.register UNGA_CPP : unga_cpp : CPP ;
  # We are careful not to do anything between defining our new UNGA_CPP target
  # type and using the CPP --> OBJ generator that could potentially cover the
  # Boost Build bug by clearing its internal viable source target type state.
  obj other-obj : source.unga_cpp ;
  """)
  
      t.run_build_system()
      t.expect_addition("bin/$toolset/debug/dummy.obj")
      t.expect_addition("Other/bin/$toolset/debug/other-obj.obj")
      t.expect_nothing_more()
  
      t.cleanup()
  
  
  ################################################################################
  #
  # main()
  # ------
  #
  ################################################################################
  
  test_generator_added_after_already_building_a_target_of_its_target_type()
  test_using_a_derived_source_type_created_after_generator_already_used()
  