1 //===- llvm/unittest/ADT/APInt.cpp - APInt unit tests ---------------------===//
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/ilist.h"
11 #include "llvm/ADT/STLExtras.h"
12 #include "llvm/ADT/ilist_node.h"
13 #include "gtest/gtest.h"
20 struct Node : ilist_node<Node> {
24 Node(int _Value) : Value(_Value) {}
27 TEST(ilistTest, Basic) {
29 List.push_back(Node(1));
30 EXPECT_EQ(1, List.back().Value);
31 EXPECT_EQ(0, List.back().getPrevNode());
32 EXPECT_EQ(0, List.back().getNextNode());
34 List.push_back(Node(2));
35 EXPECT_EQ(2, List.back().Value);
36 EXPECT_EQ(2, List.front().getNextNode()->Value);
37 EXPECT_EQ(1, List.back().getPrevNode()->Value);
39 const ilist<Node> &ConstList = List;
40 EXPECT_EQ(2, ConstList.back().Value);
41 EXPECT_EQ(2, ConstList.front().getNextNode()->Value);
42 EXPECT_EQ(1, ConstList.back().getPrevNode()->Value);
45 TEST(ilistTest, SpliceOne) {
49 // The single-element splice operation supports noops.
50 List.splice(List.begin(), List, List.begin());
51 EXPECT_EQ(1u, List.size());
52 EXPECT_EQ(1, List.front().Value);
53 EXPECT_TRUE(llvm::next(List.begin()) == List.end());
55 // Altenative noop. Move the first element behind itself.
58 List.splice(llvm::next(List.begin()), List, List.begin());
59 EXPECT_EQ(3u, List.size());
60 EXPECT_EQ(1, List.front().Value);
61 EXPECT_EQ(2, llvm::next(List.begin())->Value);
62 EXPECT_EQ(3, List.back().Value);