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1 //===- llvm/unittest/ADT/MakeUniqueTest.cpp - make_unique unit tests ------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "llvm/ADT/STLExtras.h"
11 #include "gtest/gtest.h"
12 
13 using namespace llvm;
14 
15 namespace {
16 
17 // Ensure that copies of a function_ref copy the underlying state rather than
18 // causing one function_ref to chain to the next.
TEST(FunctionRefTest,Copy)19 TEST(FunctionRefTest, Copy) {
20   auto A = [] { return 1; };
21   auto B = [] { return 2; };
22   function_ref<int()> X = A;
23   function_ref<int()> Y = X;
24   X = B;
25   EXPECT_EQ(1, Y());
26 }
27 
28 }
29