1 //===- RangeAdapterTest.cpp - Unit tests for range adapters --------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/ADT/iterator_range.h"
11 #include "llvm/ADT/STLExtras.h"
12 #include "gtest/gtest.h"
22 // A wrapper around vector which exposes rbegin(), rend().
23 class ReverseOnlyVector {
26 ReverseOnlyVector(std::initializer_list<int> list) : Vec(list) { }
28 typedef std::vector<int>::reverse_iterator reverse_iterator;
29 reverse_iterator rbegin() { return Vec.rbegin(); }
30 reverse_iterator rend() { return Vec.rend(); }
33 // A wrapper around vector which exposes begin(), end(), rbegin() and rend().
34 // begin() and end() don't have implementations as this ensures that we will
35 // get a linker error if reverse() chooses begin()/end() over rbegin(), rend().
36 class BidirectionalVector {
40 BidirectionalVector(std::initializer_list<int> list) : Vec(list) { }
42 typedef std::vector<int>::iterator iterator;
46 typedef std::vector<int>::reverse_iterator reverse_iterator;
47 reverse_iterator rbegin() { return Vec.rbegin(); }
48 reverse_iterator rend() { return Vec.rend(); }
53 class RangeAdapterTest : public ::testing::Test { };
55 typedef ::testing::Types<std::vector<int>,
60 const std::vector<int>,
62 const int[4]> RangeAdapterTestTypes;
63 TYPED_TEST_CASE(RangeAdapterTest, RangeAdapterTestTypes);
65 TYPED_TEST(RangeAdapterTest, TrivialOperation) {
66 TypeParam v = { 0, 1, 2, 3 };
69 for (int i : reverse(v))
70 EXPECT_EQ(i, counter--);
73 for (int i : reverse(reverse(v)))
74 EXPECT_EQ(i, counter++);
77 } // anonymous namespace