Files
kte/tests/test_buffer_io.cc
2026-02-17 13:44:36 -08:00

89 lines
2.0 KiB
C++

#include "Test.h"
#include <fstream>
#include <cstdio>
#include <string>
#include "Buffer.h"
static std::string
read_all(const std::string &path)
{
std::ifstream in(path, std::ios::binary);
return std::string((std::istreambuf_iterator<char>(in)), std::istreambuf_iterator<char>());
}
TEST(Buffer_SaveAs_and_Save_new_file)
{
const std::string path = "./.kte_ut_buffer_io_1.tmp";
std::remove(path.c_str());
Buffer b;
// insert two lines
b.insert_text(0, 0, std::string("Hello, world!\n"));
b.insert_text(1, 0, std::string("Second line\n"));
std::string err;
ASSERT_TRUE(b.SaveAs(path, err));
ASSERT_EQ(err.empty(), true);
// append another line then Save()
b.insert_text(2, 0, std::string("Third\n"));
b.SetDirty(true);
ASSERT_TRUE(b.Save(err));
ASSERT_EQ(err.empty(), true);
std::string got = read_all(path);
ASSERT_EQ(got, std::string("Hello, world!\nSecond line\nThird\n"));
std::remove(path.c_str());
}
TEST(Buffer_Save_after_Open_existing)
{
const std::string path = "./.kte_ut_buffer_io_2.tmp";
std::remove(path.c_str());
{
std::ofstream out(path, std::ios::binary);
out << "abc\n123\n";
}
Buffer b;
std::string err;
ASSERT_TRUE(b.OpenFromFile(path, err));
ASSERT_EQ(err.empty(), true);
b.insert_text(2, 0, std::string("tail\n"));
b.SetDirty(true);
ASSERT_TRUE(b.Save(err));
ASSERT_EQ(err.empty(), true);
std::string got = read_all(path);
ASSERT_EQ(got, std::string("abc\n123\ntail\n"));
std::remove(path.c_str());
}
TEST(Buffer_Open_nonexistent_then_SaveAs)
{
const std::string path = "./.kte_ut_buffer_io_3.tmp";
std::remove(path.c_str());
Buffer b;
std::string err;
ASSERT_TRUE(b.OpenFromFile(path, err));
ASSERT_EQ(err.empty(), true);
ASSERT_EQ(b.IsFileBacked(), false);
b.insert_text(0, 0, std::string("hello, world"));
b.insert_text(0, 12, std::string("\n"));
b.SetDirty(true);
ASSERT_TRUE(b.SaveAs(path, err));
ASSERT_EQ(err.empty(), true);
std::string got = read_all(path);
ASSERT_EQ(got, std::string("hello, world\n"));
std::remove(path.c_str());
}