1 files changed, 55 insertions, 0 deletions
diff --git a/tools/build/test/pch.py b/tools/build/test/pch.py
new file mode 100644
index 000000000..d36260a55
--- /dev/null
+++ b/tools/build/test/pch.py
@@ -0,0 +1,55 @@
+#!/usr/bin/python
+
+# Copyright 2006 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()
+
+t.write("jamroot.jam", """
+import pch ;
+cpp-pch pch : pch.hpp : <toolset>msvc:<source>pch.cpp <include>. ;
+exe hello : hello.cpp pch : <include>. ;
+""")
+
+t.write("pch.hpp.bad", """
+THIS WILL NOT COMPILE
+""")
+
+# Note that pch.hpp is written after pch.hpp.bad, so its timestamp will not be
+# less than timestamp of pch.hpp.bad.
+t.write("pch.hpp", """
+class TestClass
+{
+public:
+    TestClass( int, int ) {}
+};
+""")
+
+t.write("pch.cpp", """#include <pch.hpp>
+""")
+
+t.write("hello.cpp", """#include <pch.hpp>
+int main() { TestClass c(1, 2); }
+""")
+
+t.run_build_system()
+t.expect_addition("bin/$toolset/debug/hello.exe")
+
+
+# Now make the header unusable, without changing timestamp. If everything is OK,
+# Boost.Build will not recreate PCH, and compiler will happily use pre-compiled
+# header, not noticing that the real header is bad.
+
+t.copy_preserving_timestamp("pch.hpp.bad", "pch.hpp")
+
+t.rm("bin/$toolset/debug/hello.obj")
+
+t.run_build_system()
+t.expect_addition("bin/$toolset/debug/hello.obj")
+
+t.cleanup()