function_view: Add a lightweight span equivalent for functions

Change-Id: I887f844276d618297f9861e64d269dfa4e8062fd
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/test/meson.build b/test/meson.build
index fd62657..40ac624 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -1,6 +1,7 @@
 gtests = {
   'cancel': [stdplus_dep, gtest_main_dep],
   'exception': [stdplus_dep, gtest_main_dep],
+  'function_view': [stdplus_dep, gtest_main_dep],
   'handle/copyable': [stdplus_dep, gtest_main_dep],
   'handle/managed': [stdplus_dep, gtest_main_dep],
   'hash': [stdplus_dep, gtest_main_dep],