Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 60 insertions, 0 deletions

diff --git a/src/boost/libs/metaparse/test/look_ahead.cpp b/src/boost/libs/metaparse/test/look_ahead.cpp
new file mode 100644
index 00000000..06006232
--- /dev/null
+++ b/src/boost/libs/metaparse/test/look_ahead.cpp
@@ -0,0 +1,60 @@
+// Copyright Abel Sinkovics (abel@sinkovics.hu) 2011.
+// 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)
+
+#include <boost/metaparse/look_ahead.hpp>
+#include <boost/metaparse/start.hpp>
+#include <boost/metaparse/get_result.hpp>
+#include <boost/metaparse/digit_val.hpp>
+#include <boost/metaparse/fail.hpp>
+#include <boost/metaparse/is_error.hpp>
+#include <boost/metaparse/get_remaining.hpp>
+
+#include "common.hpp"
+
+#include <boost/mpl/apply_wrap.hpp>
+#include <boost/mpl/equal_to.hpp>
+#include <boost/mpl/equal.hpp>
+#include <boost/mpl/assert.hpp>
+
+#include "test_case.hpp"
+
+BOOST_METAPARSE_TEST_CASE(look_ahead)
+{
+ 
+  using boost::metaparse::get_result;
+  using boost::metaparse::look_ahead;
+  using boost::metaparse::digit_val;
+  using boost::metaparse::start;
+  using boost::metaparse::is_error;
+  using boost::metaparse::fail;
+  using boost::metaparse::get_remaining;
+  
+  using boost::mpl::equal_to;
+  using boost::mpl::apply_wrap2;
+  using boost::mpl::equal;
+ 
+  // test_returns_result
+  BOOST_MPL_ASSERT((
+    equal_to<
+      int1,
+      get_result<apply_wrap2<look_ahead<digit_val>, str_1983, start> >::type
+    >
+  ));
+
+  // test_returns_error
+  BOOST_MPL_ASSERT((
+    is_error<apply_wrap2<look_ahead<fail<int13> >, str_1983, start> >
+  ));
+
+  // test_doesnt_process_input
+  BOOST_MPL_ASSERT((
+    equal<
+      str_1983,
+      get_remaining<apply_wrap2<look_ahead<digit_val>, str_1983, start> >::type
+    >
+  ));
+}
+
+