1 files changed, 31 insertions, 0 deletions
diff --git a/src/boost/tools/build/test/double_loading.py b/src/boost/tools/build/test/double_loading.py
new file mode 100644
index 000000000..9b99964cb
--- /dev/null
+++ b/src/boost/tools/build/test/double_loading.py
@@ -0,0 +1,31 @@
+#!/usr/bin/python
+
+# Copyright 2003 Vladimir Prus
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE.txt or copy at
+# https://www.bfgroup.xyz/b2/LICENSE.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()