From d1632e7a46ec1db68c1989741a0098395a355f7c Mon Sep 17 00:00:00 2001
From: Zac Hansen <xaxxon@gmail.com>
Date: Fri, 13 Apr 2018 01:31:06 -0700
Subject: [PATCH] added unit test for checking that std::function works

---
 tests/notnull_tests.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tests/notnull_tests.cpp b/tests/notnull_tests.cpp
index 3d53d31..c3fb388 100644
--- a/tests/notnull_tests.cpp
+++ b/tests/notnull_tests.cpp
@@ -374,3 +374,11 @@ TEST_CASE("ConfirmCopyableAndMoveablePointerTypeNotRequired") {
     gsl::not_null<UncopyableUnmovablePointerLikeType<int>> fixed_in_place(&i);
     CHECK(*fixed_in_place == 5);
 }
+
+
+TEST_CASE("std::function") {
+    gsl::not_null<std::function<int()>> nnsf([](){return 4;});
+    CHECK(nnsf.get()() == 4);
+    std::function<int()> empty_function;
+    CHECK_THROWS(nnsf = empty_function);
+}