llvm-project/llvm/unittests/Support/LineIteratorTest.cpp

116 lines
3.4 KiB
C++

//===- LineIterator.cpp - Unit tests --------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/LineIterator.h"
#include "llvm/ADT/OwningPtr.h"
#include "llvm/Support/MemoryBuffer.h"
#include "gtest/gtest.h"
using namespace llvm;
using namespace llvm::sys;
namespace {
TEST(LineIteratorTest, Basic) {
OwningPtr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer("line 1\n"
"line 2\n"
"line 3"));
line_iterator I = line_iterator(*Buffer), E;
EXPECT_FALSE(I.is_at_eof());
EXPECT_NE(E, I);
EXPECT_EQ("line 1", *I);
EXPECT_EQ(1, I.line_number());
++I;
EXPECT_EQ("line 2", *I);
EXPECT_EQ(2, I.line_number());
++I;
EXPECT_EQ("line 3", *I);
EXPECT_EQ(3, I.line_number());
++I;
EXPECT_TRUE(I.is_at_eof());
EXPECT_EQ(E, I);
}
TEST(LineIteratorTest, CommentSkipping) {
OwningPtr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer("line 1\n"
"line 2\n"
"# Comment 1\n"
"line 4\n"
"# Comment 2"));
line_iterator I = line_iterator(*Buffer, '#'), E;
EXPECT_FALSE(I.is_at_eof());
EXPECT_NE(E, I);
EXPECT_EQ("line 1", *I);
EXPECT_EQ(1, I.line_number());
++I;
EXPECT_EQ("line 2", *I);
EXPECT_EQ(2, I.line_number());
++I;
EXPECT_EQ("line 4", *I);
EXPECT_EQ(4, I.line_number());
++I;
EXPECT_TRUE(I.is_at_eof());
EXPECT_EQ(E, I);
}
TEST(LineIteratorTest, BlankSkipping) {
OwningPtr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer("\n\n\n"
"line 1\n"
"\n\n\n"
"line 2\n"
"\n\n\n"));
line_iterator I = line_iterator(*Buffer), E;
EXPECT_FALSE(I.is_at_eof());
EXPECT_NE(E, I);
EXPECT_EQ("line 1", *I);
EXPECT_EQ(4, I.line_number());
++I;
EXPECT_EQ("line 2", *I);
EXPECT_EQ(8, I.line_number());
++I;
EXPECT_TRUE(I.is_at_eof());
EXPECT_EQ(E, I);
}
TEST(LineIteratorTest, EmptyBuffers) {
OwningPtr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer(""));
EXPECT_TRUE(line_iterator(*Buffer).is_at_eof());
EXPECT_EQ(line_iterator(), line_iterator(*Buffer));
Buffer.reset(MemoryBuffer::getMemBuffer("\n\n\n"));
EXPECT_TRUE(line_iterator(*Buffer).is_at_eof());
EXPECT_EQ(line_iterator(), line_iterator(*Buffer));
Buffer.reset(MemoryBuffer::getMemBuffer("# foo\n"
"\n"
"# bar"));
EXPECT_TRUE(line_iterator(*Buffer, '#').is_at_eof());
EXPECT_EQ(line_iterator(), line_iterator(*Buffer, '#'));
Buffer.reset(MemoryBuffer::getMemBuffer("\n"
"# baz\n"
"\n"));
EXPECT_TRUE(line_iterator(*Buffer, '#').is_at_eof());
EXPECT_EQ(line_iterator(), line_iterator(*Buffer, '#'));
}
} // anonymous namespace