1 //===- LineIterator.cpp - 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/Support/LineIterator.h"
11 #include "llvm/Support/MemoryBuffer.h"
12 #include "gtest/gtest.h"
15 using namespace llvm::sys;
19 TEST(LineIteratorTest, Basic) {
20 std::unique_ptr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer("line 1\n"
24 line_iterator I = line_iterator(*Buffer), E;
26 EXPECT_FALSE(I.is_at_eof());
29 EXPECT_EQ("line 1", *I);
30 EXPECT_EQ(1, I.line_number());
32 EXPECT_EQ("line 2", *I);
33 EXPECT_EQ(2, I.line_number());
35 EXPECT_EQ("line 3", *I);
36 EXPECT_EQ(3, I.line_number());
39 EXPECT_TRUE(I.is_at_eof());
43 TEST(LineIteratorTest, CommentSkipping) {
44 std::unique_ptr<MemoryBuffer> Buffer(
45 MemoryBuffer::getMemBuffer("line 1\n"
51 line_iterator I = line_iterator(*Buffer, '#'), E;
53 EXPECT_FALSE(I.is_at_eof());
56 EXPECT_EQ("line 1", *I);
57 EXPECT_EQ(1, I.line_number());
59 EXPECT_EQ("line 2", *I);
60 EXPECT_EQ(2, I.line_number());
62 EXPECT_EQ("line 4", *I);
63 EXPECT_EQ(4, I.line_number());
66 EXPECT_TRUE(I.is_at_eof());
70 TEST(LineIteratorTest, BlankSkipping) {
71 std::unique_ptr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer("\n\n\n"
77 line_iterator I = line_iterator(*Buffer), E;
79 EXPECT_FALSE(I.is_at_eof());
82 EXPECT_EQ("line 1", *I);
83 EXPECT_EQ(4, I.line_number());
85 EXPECT_EQ("line 2", *I);
86 EXPECT_EQ(8, I.line_number());
89 EXPECT_TRUE(I.is_at_eof());
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));
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));
102 Buffer.reset(MemoryBuffer::getMemBuffer("# foo\n"
105 EXPECT_TRUE(line_iterator(*Buffer, '#').is_at_eof());
106 EXPECT_EQ(line_iterator(), line_iterator(*Buffer, '#'));
108 Buffer.reset(MemoryBuffer::getMemBuffer("\n"
111 EXPECT_TRUE(line_iterator(*Buffer, '#').is_at_eof());
112 EXPECT_EQ(line_iterator(), line_iterator(*Buffer, '#'));
115 } // anonymous namespace