1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
| //===- llvm/unittest/ADT/MakeUniqueTest.cpp - std::make_unique unit tests ------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/STLExtras.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
// Ensure that there is a default constructor and we can test for a null
// function_ref.
TEST(FunctionRefTest, Null) {
function_ref<int()> F;
EXPECT_FALSE(F);
auto L = [] { return 1; };
F = L;
EXPECT_TRUE(F);
F = {};
EXPECT_FALSE(F);
}
// 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());
}
}
|