llvm-6502/unittests/ADT/FunctionRefTest.cpp

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//===- llvm/unittest/ADT/MakeUniqueTest.cpp - make_unique unit tests ------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/STLExtras.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
// Ensure that copies of a function_ref copy the underlying state rather than
// causing one function_ref to chain to the next.
TEST(FunctionRefTest, Copy) {
auto A = [] { return 1; };
auto B = [] { return 2; };
function_ref<int()> X = A;
function_ref<int()> Y = X;
X = B;
EXPECT_EQ(1, Y());
}
}