1 files changed, 158 insertions, 0 deletions
diff --git a/src/boost/tools/build/test/generator_selection.py b/src/boost/tools/build/test/generator_selection.py
new file mode 100755
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+++ b/src/boost/tools/build/test/generator_selection.py
@@ -0,0 +1,158 @@
+#!/usr/bin/python
+
+# Copyright 2008, 2012 Jurko Gospodnetic
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE.txt or copy at
+# https://www.bfgroup.xyz/b2/LICENSE.txt)
+
+# Tests that generators get selected correctly.
+#
+# We do not use the internal C++-compiler CPP --> OBJ generator to avoid
+# problems with specific compilers or their configurations, e.g. IBM's AIX test
+# runner 'AIX Version 5.3 TL7 SP5 (5300-07-05-0831)' using the 'IBM XL C/C++
+# for AIX, V12.1 (Version: 12.01.0000.0000)' reporting errors when run with a
+# source file whose suffix is not '.cpp'.
+
+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 target of its target type.
+
+    """
+    t = BoostBuild.Tester()
+
+    t.write("dummy.cpp", "void f() {}\n")
+
+    t.write("jamroot.jam", """\
+import common ;
+import generators ;
+import type ;
+type.register MY_OBJ : my_obj ;
+generators.register-standard common.copy : CPP : MY_OBJ ;
+
+# Building this dummy target must not cause a later defined CPP target type
+# generator not to be recognized as viable.
+my-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 common ;
+import generators ;
+import type ;
+type.register MY_TYPE : extension ;
+generators.register-standard $(__name__).generate-a-cpp-file : MY_TYPE : CPP ;
+rule generate-a-cpp-file { ECHO Generating a CPP file... ; }
+CREATE-FILE = [ common.file-creation-command ] ;
+actions generate-a-cpp-file { $(CREATE-FILE) "$(<)" }
+""")
+
+    t.write("Other/mygen.py", """\
+from __future__ import print_function
+import b2.build.generators as generators
+import b2.build.type as type
+
+from b2.manager import get_manager
+
+import os
+
+type.register('MY_TYPE', ['extension'])
+generators.register_standard('mygen.generate-a-cpp-file', ['MY_TYPE'], ['CPP'])
+if os.name == 'nt':
+    action = 'echo void g() {} > "$(<)"'
+else:
+    action = 'echo "void g() {}" > "$(<)"'
+def f(*args):
+    print("Generating a CPP file...")
+
+get_manager().engine().register_action("mygen.generate-a-cpp-file", action,
+    function=f)
+""")
+
+    t.write("Other/jamfile.jam", """\
+import mygen ;
+my-obj other-obj : source.extension ;
+""")
+
+    t.run_build_system()
+    t.expect_output_lines("Generating a CPP file...")
+    t.expect_addition("bin/dummy.my_obj")
+    t.expect_addition("Other/bin/other-obj.cpp")
+    t.expect_addition("Other/bin/other-obj.my_obj")
+    t.expect_nothing_more()
+
+    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.xxx", "Hello. My name is Peter Pan.\n")
+
+    t.write("jamroot.jam", """\
+import common ;
+import generators ;
+import type ;
+type.register XXX : xxx ;
+type.register YYY : yyy ;
+generators.register-standard common.copy : XXX : YYY ;
+
+# Building this dummy target must not cause a later defined XXX2 target type not
+# to be recognized as a viable source type for building YYY targets.
+yyy dummy : dummy.xxx ;
+alias the-test-output : Other//other ;
+""")
+
+    t.write("Other/source.xxx2", "Hello. My name is Tinkerbell.\n")
+
+    t.write("Other/jamfile.jam", """\
+import type ;
+type.register XXX2 : xxx2 : XXX ;
+# We are careful not to do anything between defining our new XXX2 target type
+# and using the XXX --> YYY generator that could potentially cover the Boost
+# Build bug by clearing its internal viable source target type state.
+yyy other : source.xxx2 ;
+""")
+
+    t.run_build_system()
+    t.expect_addition("bin/dummy.yyy")
+    t.expect_addition("Other/bin/other.yyy")
+    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()