async-log-reader/TestLineReaderMapping.cpp at master · work-examples/async-log-reader · GitHub

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#include"LineReader.h"

#include"TestHelpers.h"

#include<algorithm>
#include<string>

#include"gtest/gtest.h"


namespace
{
# defineCLineReader CMappingLineReader

constsize_t MaxLogLineLength = 1024; // copy-pasted value from LineReader.cpp
}


TEST(CLineReader, Open)
{
 TempFile file("");
 CLineReader reader;
EXPECT_TRUE(reader.Open(file.GetFilename().c_str()));
 reader.Close();
}

TEST(CLineReader, MissedOpen)
{
 CLineReader reader;
constauto line = reader.GetNextLine();
EXPECT_FALSE(line);
}

TEST(CLineReader, EmptyFile)
{
 TempFile file("");
 CLineReader reader;
EXPECT_TRUE(reader.Open(file.GetFilename().c_str()));
constauto line = reader.GetNextLine();
EXPECT_FALSE(line);
}

TEST(CLineReader, OneLineNoLF)
{
 TempFile file("ABCD");
 CLineReader reader;
EXPECT_TRUE(reader.Open(file.GetFilename().c_str()));
auto line = reader.GetNextLine();
ASSERT_TRUE(line);
EXPECT_EQ(std::string(*line), "ABCD");
 line = reader.GetNextLine();
EXPECT_FALSE(line);
}

TEST(CLineReader, OneLineCRLF)
{
 TempFile file("ABCD\r\n");
 CLineReader reader;
EXPECT_TRUE(reader.Open(file.GetFilename().c_str()));
auto line = reader.GetNextLine();
ASSERT_TRUE(line);
EXPECT_EQ(std::string(*line), "ABCD\r\n");
 line = reader.GetNextLine();
EXPECT_FALSE(line);
}

TEST(CLineReader, OneLineLF)
{
 TempFile file("ABCD\n");
 CLineReader reader;
EXPECT_TRUE(reader.Open(file.GetFilename().c_str()));
auto line = reader.GetNextLine();
ASSERT_TRUE(line);
EXPECT_EQ(std::string(*line), "ABCD\n");
 line = reader.GetNextLine();
EXPECT_FALSE(line);
}

TEST(CLineReader, TwoLinesLF_NoLF)
{
 TempFile file("abc\nDEFG");
 CLineReader reader;
EXPECT_TRUE(reader.Open(file.GetFilename().c_str()));
auto line = reader.GetNextLine();
ASSERT_TRUE(line);
EXPECT_EQ(std::string(*line), "abc\n");
 line = reader.GetNextLine();
ASSERT_TRUE(line);
EXPECT_EQ(std::string(*line), "DEFG");
 line = reader.GetNextLine();
EXPECT_FALSE(line);
}

TEST(CLineReader, TwoLinesLF_LF)
{
 TempFile file("abc\nDEFG\n");
 CLineReader reader;
EXPECT_TRUE(reader.Open(file.GetFilename().c_str()));
auto line = reader.GetNextLine();
ASSERT_TRUE(line);
EXPECT_EQ(std::string(*line), "abc\n");
 line = reader.GetNextLine();
ASSERT_TRUE(line);
EXPECT_EQ(std::string(*line), "DEFG\n");
 line = reader.GetNextLine();
EXPECT_FALSE(line);
}

TEST(CLineReader, EmptyLines)
{
 TempFile file("\n\n");
 CLineReader reader;
EXPECT_TRUE(reader.Open(file.GetFilename().c_str()));
auto line = reader.GetNextLine();
ASSERT_TRUE(line);
EXPECT_EQ(std::string(*line), "\n");
 line = reader.GetNextLine();
ASSERT_TRUE(line);
EXPECT_EQ(std::string(*line), "\n");
 line = reader.GetNextLine();
EXPECT_FALSE(line);
}

TEST(CLineReader, ThreeLines)
{
 TempFile file("Abcdef\n\n3rd Line");
 CLineReader reader;
EXPECT_TRUE(reader.Open(file.GetFilename().c_str()));
auto line = reader.GetNextLine();
ASSERT_TRUE(line);
EXPECT_EQ(std::string(*line), "Abcdef\n");
 line = reader.GetNextLine();
ASSERT_TRUE(line);
EXPECT_EQ(std::string(*line), "\n");
 line = reader.GetNextLine();
ASSERT_TRUE(line);
EXPECT_EQ(std::string(*line), "3rd Line");
 line = reader.GetNextLine();
EXPECT_FALSE(line);
}

TEST(CLineReader, LineMaxLength_1)
{
const std::string str = std::string(MaxLogLineLength, 'x');
 TempFile file(str);
 CLineReader reader;
EXPECT_TRUE(reader.Open(file.GetFilename().c_str()));
auto line = reader.GetNextLine();
ASSERT_TRUE(line);
EXPECT_EQ(*line, str);
 line = reader.GetNextLine();
EXPECT_FALSE(line);
}

TEST(CLineReader, LineMaxLength_2)
{
const std::string str = std::string(MaxLogLineLength - 1, 'x');
 TempFile file(str + "\n");
 CLineReader reader;
EXPECT_TRUE(reader.Open(file.GetFilename().c_str()));
auto line = reader.GetNextLine();
ASSERT_TRUE(line);
EXPECT_EQ(*line, str + "\n");
 line = reader.GetNextLine();
EXPECT_FALSE(line);
}

TEST(CLineReader, LineTooLong_1)
{
const std::string str = std::string(MaxLogLineLength + 1, 'x');
 TempFile file(str);
 CLineReader reader;
EXPECT_TRUE(reader.Open(file.GetFilename().c_str()));
auto line = reader.GetNextLine();
EXPECT_FALSE(line);
}

TEST(CLineReader, LineTooLong_2)
{
const std::string str = std::string(MaxLogLineLength, 'x');
 TempFile file(str + "\n");
 CLineReader reader;
EXPECT_TRUE(reader.Open(file.GetFilename().c_str()));
auto line = reader.GetNextLine();
EXPECT_FALSE(line);
}