path: root/src/sexpr/parser_test.cpp

#include "parser.hpp"
//    parser_test.cpp - Testsuite for sexpr tree builder.
//
//    Copyright © 2014 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 "../tests/fdhack.hpp"

#include "../poison.hpp"


namespace tmwa
{
static
io::FD string_pipe(ZString sz)
{
    io::FD rfd, wfd;
    if (-1 == io::FD::pipe(rfd, wfd))
        return io::FD();
    if (sz.size() != wfd.write(sz.c_str(), sz.size()))
    {
        rfd.close();
        wfd.close();
        return io::FD();
    }
    wfd.close();
    return rfd;
}

TEST(sexpr, parser)
{
    sexpr::SExpr s;
    io::LineSpan span;
    sexpr::Lexer lexer("<parser-test1>"_s, string_pipe(" foo( ) 123\"\" \n"_s));

    EXPECT_TRUE(sexpr::parse(lexer, s));
    EXPECT_EQ(s._type, sexpr::TOKEN);
    EXPECT_EQ(s._str, "foo"_s);

    EXPECT_TRUE(sexpr::parse(lexer, s));
    EXPECT_EQ(s._type, sexpr::LIST);
    EXPECT_EQ(s._list, std::vector<sexpr::SExpr>());

    EXPECT_TRUE(sexpr::parse(lexer, s));
    EXPECT_EQ(s._type, sexpr::INT);
    EXPECT_EQ(s._int, 123);

    EXPECT_TRUE(sexpr::parse(lexer, s));
    EXPECT_EQ(s._type, sexpr::STRING);
    EXPECT_EQ(s._str, ""_s);

    EXPECT_FALSE(sexpr::parse(lexer, s));
    EXPECT_EQ(lexer.peek(), sexpr::TOK_EOF);
}

TEST(sexpr, parselist)
{
    sexpr::SExpr s;
    sexpr::Lexer lexer("<parser-test1>"_s, string_pipe("(foo)(bar)\n"_s));

    EXPECT_TRUE(sexpr::parse(lexer, s));
    EXPECT_EQ(s._type, sexpr::LIST);
    EXPECT_EQ(s._list.size(), 1);
    EXPECT_EQ(s._list[0]._type, sexpr::TOKEN);
    EXPECT_EQ(s._list[0]._str, "foo"_s);

    EXPECT_TRUE(sexpr::parse(lexer, s));
    EXPECT_EQ(s._type, sexpr::LIST);
    EXPECT_EQ(s._list.size(), 1);
    EXPECT_EQ(s._list[0]._type, sexpr::TOKEN);
    EXPECT_EQ(s._list[0]._str, "bar"_s);

    EXPECT_FALSE(sexpr::parse(lexer, s));
    EXPECT_EQ(lexer.peek(), sexpr::TOK_EOF);
}

TEST(sexpr, parsebad)
{
    QuietFd q;
    for (LString bad : {
            "(\n"_s,
            ")\n"_s,
            "\"_s\n"_s,
            "'\n"_s,
            "\\\n"_s,
            "\"_s\\"_s,
            "\"_s\\z\""_s,
            "(()\n"_s,
            "((\n"_s,
            "((\"\n"_s,
    })
    {
        sexpr::SExpr s;
        io::LineSpan span;
        sexpr::Lexer lexer("<parse-bad>"_s, string_pipe(bad));
        EXPECT_FALSE(sexpr::parse(lexer, s));
        EXPECT_EQ(lexer.peek(), sexpr::TOK_ERROR);
    }
}
} // namespace tmwa