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
14 using namespace llvm;
15 using namespace llvm::sys;
16
17 namespace {
18
TEST(LineIteratorTest,Basic)19 TEST(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
TEST(LineIteratorTest,CommentSkipping)43 TEST(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
TEST(LineIteratorTest,BlankSkipping)70 TEST(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
TEST(LineIteratorTest,EmptyBuffers)93 TEST(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