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#include "write.hpp"
// io/write_test.cpp - Testsuite for output to files
//
// Copyright © 2013 Ben Longbons <b.r.longbons@gmail.com>
//
// This file is part of The Mana World (Athena server)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include <gtest/gtest.h>
#include <fcntl.h>
#include <unistd.h>
#include "../strings/astring.hpp"
#include "../strings/mstring.hpp"
#include "../strings/xstring.hpp"
//#include "../poison.hpp"
static
io::FD pipew(io::FD& rfd)
{
io::FD wfd;
if (-1 == io::FD::pipe2(rfd, wfd, O_NONBLOCK))
{
rfd = io::FD();
return io::FD();
}
return wfd;
}
class PipeWriter
{
private:
io::FD rfd;
public:
io::WriteFile wf;
public:
PipeWriter(bool lb)
: wf(pipew(rfd), lb)
{}
~PipeWriter()
{
rfd.close();
}
AString slurp()
{
MString tmp;
char buf[4096];
while (true)
{
ssize_t rv = rfd.read(buf, sizeof(buf));
if (rv == -1)
{
if (errno != EAGAIN)
return {"Error, read failed :("};
rv = 0;
}
if (rv == 0)
break;
tmp += XString(buf + 0, buf + rv, nullptr);
}
return AString(tmp);
}
};
TEST(io, write1)
{
PipeWriter pw(false);
io::WriteFile& wf = pw.wf;
wf.really_put("Hello, ", 7);
EXPECT_EQ("", pw.slurp());
wf.put_line("World!\n");
EXPECT_EQ("", pw.slurp());
EXPECT_TRUE(wf.close());
EXPECT_EQ("Hello, World!\n", pw.slurp());
}
TEST(io, write2)
{
PipeWriter pw(true);
io::WriteFile& wf = pw.wf;
wf.really_put("Hello, ", 7);
EXPECT_EQ("", pw.slurp());
wf.put_line("World!");
wf.really_put("XXX", 3);
EXPECT_EQ("Hello, World!\n", pw.slurp());
EXPECT_TRUE(wf.close());
EXPECT_EQ("XXX", pw.slurp());
}
TEST(io, write3)
{
// TODO see if it's possible to get the real value
constexpr size_t PIPE_CAPACITY = 65536;
char buf[PIPE_CAPACITY];
PipeWriter pw(false);
io::WriteFile& wf = pw.wf;
memset(buf, 'a', sizeof(buf));
wf.really_put(buf, 1);
EXPECT_EQ("", pw.slurp());
memset(buf, 'b', sizeof(buf));
wf.really_put(buf, sizeof(buf));
// write 1 + PIPE_CAPACITY
// read 1 + N + (PIPE_CAPACITY - N)
size_t remaining;
{
AString a = pw.slurp();
XString x = a.xslice_t(1);
EXPECT_EQ(a.front(), 'a');
EXPECT_EQ(x.front(), 'b');
EXPECT_EQ(x.back(), 'b');
EXPECT_EQ(x, XString(buf, buf + x.size(), nullptr));
remaining = sizeof(buf) - x.size();
}
EXPECT_TRUE(wf.close());
EXPECT_EQ(pw.slurp(), XString(buf, buf + remaining, nullptr));
}
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