1 files changed, 54 insertions, 0 deletions
diff --git a/mfbt/tests/TestScopeExit.cpp b/mfbt/tests/TestScopeExit.cpp
new file mode 100644
index 000000000..fadd3a10a
--- /dev/null
+++ b/mfbt/tests/TestScopeExit.cpp
@@ -0,0 +1,54 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/Assertions.h"
+#include "mozilla/ScopeExit.h"
+
+using mozilla::MakeScopeExit;
+
+#define CHECK(c) \
+  do { \
+    bool cond = !!(c); \
+    MOZ_RELEASE_ASSERT(cond, "Failed assertion: " #c); \
+    if (!cond) { \
+      return false; \
+    } \
+  } while (false)
+
+static bool
+Test()
+{
+  int a = 1;
+  int b = 1;
+
+  {
+    a++;
+    auto guardA = MakeScopeExit([&] {
+      a--;
+    });
+
+    b++;
+    auto guardB = MakeScopeExit([&] {
+      b--;
+    });
+
+    guardB.release();
+  }
+
+  CHECK(a == 1);
+  CHECK(b == 2);
+
+  return true;
+}
+
+int
+main()
+{
+  if (!Test()) {
+    return 1;
+  }
+  return 0;
+}