1//===- LineIterator.cpp - 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/Support/LineIterator.h"
11#include "llvm/Support/MemoryBuffer.h"
12#include "gtest/gtest.h"
13
14using namespace llvm;
15using namespace llvm::sys;
16
17namespace {
18
19TEST(LineIteratorTest, Basic) {
20  std::unique_ptr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer("line 1\n"
21                                                                  "line 2\n"
22                                                                  "line 3"));
23
24  line_iterator I = line_iterator(*Buffer), E;
25
26  EXPECT_FALSE(I.is_at_eof());
27  EXPECT_NE(E, I);
28
29  EXPECT_EQ("line 1", *I);
30  EXPECT_EQ(1, I.line_number());
31  ++I;
32  EXPECT_EQ("line 2", *I);
33  EXPECT_EQ(2, I.line_number());
34  ++I;
35  EXPECT_EQ("line 3", *I);
36  EXPECT_EQ(3, I.line_number());
37  ++I;
38
39  EXPECT_TRUE(I.is_at_eof());
40  EXPECT_EQ(E, I);
41}
42
43TEST(LineIteratorTest, CommentSkipping) {
44  std::unique_ptr<MemoryBuffer> Buffer(
45      MemoryBuffer::getMemBuffer("line 1\n"
46                                 "line 2\n"
47                                 "# Comment 1\n"
48                                 "line 4\n"
49                                 "# Comment 2"));
50
51  line_iterator I = line_iterator(*Buffer, '#'), E;
52
53  EXPECT_FALSE(I.is_at_eof());
54  EXPECT_NE(E, I);
55
56  EXPECT_EQ("line 1", *I);
57  EXPECT_EQ(1, I.line_number());
58  ++I;
59  EXPECT_EQ("line 2", *I);
60  EXPECT_EQ(2, I.line_number());
61  ++I;
62  EXPECT_EQ("line 4", *I);
63  EXPECT_EQ(4, I.line_number());
64  ++I;
65
66  EXPECT_TRUE(I.is_at_eof());
67  EXPECT_EQ(E, I);
68}
69
70TEST(LineIteratorTest, BlankSkipping) {
71  std::unique_ptr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer("\n\n\n"
72                                                                  "line 1\n"
73                                                                  "\n\n\n"
74                                                                  "line 2\n"
75                                                                  "\n\n\n"));
76
77  line_iterator I = line_iterator(*Buffer), E;
78
79  EXPECT_FALSE(I.is_at_eof());
80  EXPECT_NE(E, I);
81
82  EXPECT_EQ("line 1", *I);
83  EXPECT_EQ(4, I.line_number());
84  ++I;
85  EXPECT_EQ("line 2", *I);
86  EXPECT_EQ(8, I.line_number());
87  ++I;
88
89  EXPECT_TRUE(I.is_at_eof());
90  EXPECT_EQ(E, I);
91}
92
93TEST(LineIteratorTest, EmptyBuffers) {
94  std::unique_ptr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer(""));
95  EXPECT_TRUE(line_iterator(*Buffer).is_at_eof());
96  EXPECT_EQ(line_iterator(), line_iterator(*Buffer));
97
98  Buffer.reset(MemoryBuffer::getMemBuffer("\n\n\n"));
99  EXPECT_TRUE(line_iterator(*Buffer).is_at_eof());
100  EXPECT_EQ(line_iterator(), line_iterator(*Buffer));
101
102  Buffer.reset(MemoryBuffer::getMemBuffer("# foo\n"
103                                          "\n"
104                                          "# bar"));
105  EXPECT_TRUE(line_iterator(*Buffer, '#').is_at_eof());
106  EXPECT_EQ(line_iterator(), line_iterator(*Buffer, '#'));
107
108  Buffer.reset(MemoryBuffer::getMemBuffer("\n"
109                                          "# baz\n"
110                                          "\n"));
111  EXPECT_TRUE(line_iterator(*Buffer, '#').is_at_eof());
112  EXPECT_EQ(line_iterator(), line_iterator(*Buffer, '#'));
113}
114
115} // anonymous namespace
116