#include "read.hpp"

#include <gtest/gtest.h>

#include "../strings/zstring.hpp"

static
int string_pipe(ZString sz)
{
    int pfd[2];
    if (-1 == pipe(pfd))
        return -1;
    if (sz.size() != write(pfd[1], sz.c_str(), sz.size()))
    {
        close(pfd[0]);
        close(pfd[1]);
        return -1;
    }
    close(pfd[1]);
    return pfd[0];
}

TEST(io, read1)
{
    io::ReadFile rf(string_pipe("Hello"));
    FString hi;
    EXPECT_TRUE(rf.getline(hi));
    EXPECT_EQ(hi, "Hello");
    EXPECT_FALSE(rf.getline(hi));
}
TEST(io, read2)
{
    io::ReadFile rf(string_pipe("Hello\n"));
    FString hi;
    EXPECT_TRUE(rf.getline(hi));
    EXPECT_EQ(hi, "Hello");
    EXPECT_FALSE(rf.getline(hi));
}
TEST(io, read3)
{
    io::ReadFile rf(string_pipe("Hello\r"));
    FString hi;
    EXPECT_TRUE(rf.getline(hi));
    EXPECT_EQ(hi, "Hello");
    EXPECT_FALSE(rf.getline(hi));
}
TEST(io, read4)
{
    io::ReadFile rf(string_pipe("Hello\r\n"));
    FString hi;
    EXPECT_TRUE(rf.getline(hi));
    EXPECT_EQ(hi, "Hello");
    EXPECT_FALSE(rf.getline(hi));
}
TEST(io, read5)
{
    io::ReadFile rf(string_pipe("Hello\n\r"));
    FString hi;
    EXPECT_TRUE(rf.getline(hi));
    EXPECT_EQ(hi, "Hello");
    EXPECT_TRUE(rf.getline(hi));
    EXPECT_FALSE(hi);
    EXPECT_FALSE(rf.getline(hi));
}