1 files changed, 129 insertions, 0 deletions
diff --git a/src/boost/tools/build/test/alternatives.py b/src/boost/tools/build/test/alternatives.py
new file mode 100644
index 000000000..3da322515
--- /dev/null
+++ b/src/boost/tools/build/test/alternatives.py
@@ -0,0 +1,129 @@
+#!/usr/bin/python
+
+# Copyright 2003 Dave Abrahams
+# Copyright 2003, 2006 Vladimir Prus
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE.txt or https://www.bfgroup.xyz/b2/LICENSE.txt)
+
+# Test main target alternatives.
+
+import BoostBuild
+import string
+
+t = BoostBuild.Tester(use_test_config=False)
+
+# Test that basic alternatives selection works.
+t.write("jamroot.jam", "")
+
+t.write("jamfile.jam", """
+exe a : a_empty.cpp ;
+exe a : a.cpp : <variant>release ;
+""")
+
+t.write("a_empty.cpp", "")
+
+t.write("a.cpp", "int main() {}\n")
+
+t.run_build_system(["release"])
+
+t.expect_addition("bin/$toolset/release*/a.exe")
+
+# Test that alternative selection works for ordinary properties, in particular
+# user-defined.
+t.write("jamroot.jam", "")
+
+t.write("jamfile.jam", """
+import feature ;
+feature.feature X : off on : propagated ;
+exe a : b.cpp ;
+exe a : a.cpp : <X>on ;
+""")
+t.write("b.cpp", "int main() {}\n")
+
+t.rm("bin")
+
+t.run_build_system()
+t.expect_addition("bin/$toolset/debug*/b.obj")
+
+t.run_build_system(["X=on"])
+t.expect_addition("bin/$toolset/debug/X-on*/a.obj")
+
+t.rm("bin")
+
+# Test that everything works ok even with the default build.
+t.write("jamfile.jam", """\
+exe a : a_empty.cpp : <variant>release ;
+exe a : a.cpp : <variant>debug ;
+""")
+
+t.run_build_system()
+t.expect_addition("bin/$toolset/debug*/a.exe")
+
+# Test that only properties which are in the build request matter for
+# alternative selection. IOW, alternative with <variant>release is better than
+# one with <variant>debug when building the release variant.
+t.write("jamfile.jam", """\
+exe a : a_empty.cpp : <variant>debug ;
+exe a : a.cpp : <variant>release ;
+""")
+
+t.run_build_system(["release"])
+t.expect_addition("bin/$toolset/release*/a.exe")
+
+# Test that free properties do not matter. We really do not want <cxxflags>
+# property in build request to affect alternative selection.
+t.write("jamfile.jam", """
+exe a : a_empty.cpp : <variant>debug <define>FOO <include>BAR ;
+exe a : a.cpp : <variant>release ;
+""")
+
+t.rm("bin/$toolset/release/a.exe")
+t.rm("bin/$toolset/release/*/a.exe")
+t.run_build_system(["release", "define=FOO"])
+t.expect_addition("bin/$toolset/release*/a.exe")
+
+# Test that ambiguity is reported correctly.
+t.write("jamfile.jam", """\
+exe a : a_empty.cpp ;
+exe a : a.cpp ;
+""")
+t.run_build_system(["--no-error-backtrace"], status=None)
+t.expect_output_lines("error: No best alternative for ./a")
+
+# Another ambiguity test: two matches properties in one alternative are neither
+# better nor worse than a single one in another alternative.
+t.write("jamfile.jam", """\
+exe a : a_empty.cpp : <optimization>off <profiling>off ;
+exe a : a.cpp : <debug-symbols>on ;
+""")
+
+t.run_build_system(["--no-error-backtrace"], status=None)
+t.expect_output_lines("error: No best alternative for ./a")
+t.rm("bin")
+
+# Test that we can have alternative without sources.
+t.write("jamfile.jam", """\
+alias specific-sources ;
+import feature ;
+feature.extend os : MAGIC ;
+alias specific-sources : b.cpp : <os>MAGIC ;
+exe a : a.cpp specific-sources ;
+""")
+t.run_build_system()
+t.expect_addition("bin/$toolset/debug*/a.exe")
+t.rm("bin")
+
+# Test that subfeatures are expanded in alternatives
+# and that unknown subfeatures fail to match instead of
+# causing errors.
+t.write("jamfile.jam", """\
+import feature : feature subfeature ;
+feature X : off on : propagated ;
+subfeature X on : version : 1 : propagated ;
+exe a : a.cpp : <X>on-1 ;
+exe a : a_empty.cpp ;
+exe a : a_empty.cpp : <X>on-2 ;
+""")
+t.run_build_system(["X=on-1"])
+
+t.cleanup()