1 //===- llvm/unittest/ADT/ArrayRefTest.cpp - ArrayRef 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/ArrayRef.h"
11 #include "llvm/Support/Allocator.h"
12 #include "llvm/Support/raw_ostream.h"
13 #include "gtest/gtest.h"
14 using namespace llvm;
15 
16 namespace llvm {
17 
18 TEST(ArrayRefTest, AllocatorCopy) {
19   BumpPtrAllocator Alloc;
20   static const uint16_t Words1[] = { 1, 4, 200, 37 };
21   ArrayRef<uint16_t> Array1 = makeArrayRef(Words1, 4);
22   static const uint16_t Words2[] = { 11, 4003, 67, 64000, 13 };
23   ArrayRef<uint16_t> Array2 = makeArrayRef(Words2, 5);
24   ArrayRef<uint16_t> Array1c = Array1.copy(Alloc);
25   ArrayRef<uint16_t> Array2c = Array2.copy(Alloc);;
26   EXPECT_TRUE(Array1.equals(Array1c));
27   EXPECT_NE(Array1.data(), Array1c.data());
28   EXPECT_TRUE(Array2.equals(Array2c));
29   EXPECT_NE(Array2.data(), Array2c.data());
30 }
31 
32 TEST(ArrayRefTest, DropBack) {
33   static const int TheNumbers[] = {4, 8, 15, 16, 23, 42};
34   ArrayRef<int> AR1(TheNumbers);
35   ArrayRef<int> AR2(TheNumbers, AR1.size() - 1);
36   EXPECT_TRUE(AR1.drop_back().equals(AR2));
37 }
38 
39 TEST(ArrayRefTest, Equals) {
40   static const int A1[] = {1, 2, 3, 4, 5, 6, 7, 8};
41   ArrayRef<int> AR1(A1);
42   EXPECT_TRUE(AR1.equals(1, 2, 3, 4, 5, 6, 7, 8));
43   EXPECT_FALSE(AR1.equals(8, 1, 2, 4, 5, 6, 6, 7));
44   EXPECT_FALSE(AR1.equals(2, 4, 5, 6, 6, 7, 8, 1));
45   EXPECT_FALSE(AR1.equals(0, 1, 2, 4, 5, 6, 6, 7));
46   EXPECT_FALSE(AR1.equals(1, 2, 42, 4, 5, 6, 7, 8));
47   EXPECT_FALSE(AR1.equals(42, 2, 3, 4, 5, 6, 7, 8));
48   EXPECT_FALSE(AR1.equals(1, 2, 3, 4, 5, 6, 7, 42));
49   EXPECT_FALSE(AR1.equals(1, 2, 3, 4, 5, 6, 7));
50   EXPECT_FALSE(AR1.equals(1, 2, 3, 4, 5, 6, 7, 8, 9));
51 
52   ArrayRef<int> AR1a = AR1.drop_back();
53   EXPECT_TRUE(AR1a.equals(1, 2, 3, 4, 5, 6, 7));
54   EXPECT_FALSE(AR1a.equals(1, 2, 3, 4, 5, 6, 7, 8));
55 
56   ArrayRef<int> AR1b = AR1a.slice(2, 4);
57   EXPECT_TRUE(AR1b.equals(3, 4, 5, 6));
58   EXPECT_FALSE(AR1b.equals(2, 3, 4, 5, 6));
59   EXPECT_FALSE(AR1b.equals(3, 4, 5, 6, 7));
60 }
61 
62 TEST(ArrayRefTest, EmptyEquals) {
63   EXPECT_TRUE(ArrayRef<unsigned>() == ArrayRef<unsigned>());
64 }
65 
66 } // end anonymous namespace
67