Add test/cmake_install_test

test/cmake_install_test/main.cpp

@@ -0,0 +1,22 @@
+// Copyright 2017, 2021 Peter Dimov.
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+// See library home page at http://www.boost.org/libs/function
+
+#include <boost/function.hpp>
+#include <cassert>
+
+#define BOOST_TEST(expr) assert(expr)
+#define BOOST_TEST_EQ(x1, x2) assert((x1)==(x2))
+
+int add( int x, int y )
+{
+    return x + y;
+}
+
+int main()
+{
+    boost::function<int(int, int)> fn( &add );
+    BOOST_TEST_EQ( fn( 1, 2 ), 3 );
+}