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It isn't always useful to skip blank lines, as evidenced by the somewhat awkward use of line_iterator in llvm-cov. This adds a knob to control whether or not to skip blanks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217960 91177308-0d34-0410-b5e6-96231b3b80d8
194 lines
5.5 KiB
C++
194 lines
5.5 KiB
C++
//===- LineIterator.cpp - Unit tests --------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/LineIterator.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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using namespace llvm::sys;
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namespace {
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TEST(LineIteratorTest, Basic) {
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std::unique_ptr<MemoryBuffer> Buffer = MemoryBuffer::getMemBuffer("line 1\n"
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"line 2\n"
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"line 3");
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line_iterator I = line_iterator(*Buffer), E;
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EXPECT_FALSE(I.is_at_eof());
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EXPECT_NE(E, I);
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EXPECT_EQ("line 1", *I);
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EXPECT_EQ(1, I.line_number());
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++I;
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EXPECT_EQ("line 2", *I);
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EXPECT_EQ(2, I.line_number());
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++I;
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EXPECT_EQ("line 3", *I);
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EXPECT_EQ(3, I.line_number());
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++I;
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EXPECT_TRUE(I.is_at_eof());
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EXPECT_EQ(E, I);
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}
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TEST(LineIteratorTest, CommentAndBlankSkipping) {
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std::unique_ptr<MemoryBuffer> Buffer(
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MemoryBuffer::getMemBuffer("line 1\n"
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"line 2\n"
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"# Comment 1\n"
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"\n"
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"line 5\n"
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"\n"
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"# Comment 2"));
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line_iterator I = line_iterator(*Buffer, true, '#'), E;
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EXPECT_FALSE(I.is_at_eof());
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EXPECT_NE(E, I);
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EXPECT_EQ("line 1", *I);
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EXPECT_EQ(1, I.line_number());
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++I;
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EXPECT_EQ("line 2", *I);
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EXPECT_EQ(2, I.line_number());
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++I;
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EXPECT_EQ("line 5", *I);
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EXPECT_EQ(5, I.line_number());
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++I;
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EXPECT_TRUE(I.is_at_eof());
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EXPECT_EQ(E, I);
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}
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TEST(LineIteratorTest, CommentSkippingKeepBlanks) {
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std::unique_ptr<MemoryBuffer> Buffer(
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MemoryBuffer::getMemBuffer("line 1\n"
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"line 2\n"
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"# Comment 1\n"
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"# Comment 2\n"
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"\n"
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"line 6\n"
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"\n"
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"# Comment 3"));
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line_iterator I = line_iterator(*Buffer, false, '#'), E;
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EXPECT_FALSE(I.is_at_eof());
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EXPECT_NE(E, I);
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EXPECT_EQ("line 1", *I);
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EXPECT_EQ(1, I.line_number());
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++I;
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EXPECT_EQ("line 2", *I);
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EXPECT_EQ(2, I.line_number());
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++I;
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EXPECT_EQ("", *I);
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EXPECT_EQ(5, I.line_number());
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++I;
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EXPECT_EQ("line 6", *I);
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EXPECT_EQ(6, I.line_number());
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++I;
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EXPECT_EQ("", *I);
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EXPECT_EQ(7, I.line_number());
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++I;
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EXPECT_TRUE(I.is_at_eof());
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EXPECT_EQ(E, I);
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}
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TEST(LineIteratorTest, BlankSkipping) {
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std::unique_ptr<MemoryBuffer> Buffer = MemoryBuffer::getMemBuffer("\n\n\n"
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"line 1\n"
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"\n\n\n"
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"line 2\n"
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"\n\n\n");
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line_iterator I = line_iterator(*Buffer), E;
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EXPECT_FALSE(I.is_at_eof());
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EXPECT_NE(E, I);
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EXPECT_EQ("line 1", *I);
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EXPECT_EQ(4, I.line_number());
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++I;
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EXPECT_EQ("line 2", *I);
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EXPECT_EQ(8, I.line_number());
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++I;
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EXPECT_TRUE(I.is_at_eof());
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EXPECT_EQ(E, I);
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}
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TEST(LineIteratorTest, BlankKeeping) {
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std::unique_ptr<MemoryBuffer> Buffer = MemoryBuffer::getMemBuffer("\n\n"
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"line 3\n"
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"\n"
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"line 5\n"
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"\n\n");
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line_iterator I = line_iterator(*Buffer, false), E;
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EXPECT_FALSE(I.is_at_eof());
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EXPECT_NE(E, I);
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EXPECT_EQ("", *I);
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EXPECT_EQ(1, I.line_number());
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++I;
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EXPECT_EQ("", *I);
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EXPECT_EQ(2, I.line_number());
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++I;
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EXPECT_EQ("line 3", *I);
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EXPECT_EQ(3, I.line_number());
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++I;
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EXPECT_EQ("", *I);
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EXPECT_EQ(4, I.line_number());
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++I;
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EXPECT_EQ("line 5", *I);
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EXPECT_EQ(5, I.line_number());
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++I;
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EXPECT_EQ("", *I);
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EXPECT_EQ(6, I.line_number());
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++I;
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EXPECT_EQ("", *I);
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EXPECT_EQ(7, I.line_number());
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++I;
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EXPECT_TRUE(I.is_at_eof());
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EXPECT_EQ(E, I);
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}
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TEST(LineIteratorTest, EmptyBuffers) {
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std::unique_ptr<MemoryBuffer> Buffer = MemoryBuffer::getMemBuffer("");
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EXPECT_TRUE(line_iterator(*Buffer).is_at_eof());
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EXPECT_EQ(line_iterator(), line_iterator(*Buffer));
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EXPECT_TRUE(line_iterator(*Buffer, false).is_at_eof());
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EXPECT_EQ(line_iterator(), line_iterator(*Buffer, false));
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Buffer = MemoryBuffer::getMemBuffer("\n\n\n");
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EXPECT_TRUE(line_iterator(*Buffer).is_at_eof());
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EXPECT_EQ(line_iterator(), line_iterator(*Buffer));
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Buffer = MemoryBuffer::getMemBuffer("# foo\n"
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"\n"
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"# bar");
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EXPECT_TRUE(line_iterator(*Buffer, true, '#').is_at_eof());
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EXPECT_EQ(line_iterator(), line_iterator(*Buffer, true, '#'));
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Buffer = MemoryBuffer::getMemBuffer("\n"
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"# baz\n"
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"\n");
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EXPECT_TRUE(line_iterator(*Buffer, true, '#').is_at_eof());
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EXPECT_EQ(line_iterator(), line_iterator(*Buffer, true, '#'));
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}
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} // anonymous namespace
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