test_sexpr_parser.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2019 KiCad Developers, see AUTHORS.TXT for contributors.
 *
 * 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 2
 * 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, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */
 
#include <qa_utils/wx_utils/unit_test_utils.h>
 
// Code under test
#include <sexpr/sexpr_parser.h>
 
#include "sexpr_test_utils.h"
 
class TEST_SEXPR_PARSER_FIXTURE
{
public:
 std::unique_ptr<SEXPR::SEXPR> Parse( const std::string& aIn )
 {
 return std::unique_ptr<SEXPR::SEXPR>( m_parser.Parse( aIn ) );
 }
 
 SEXPR::PARSER m_parser;
};
 
 
struct TEST_SEXPR_CASE
{
 std::string m_case_name;
 std::string m_sexpr_data;
};
 
 
BOOST_FIXTURE_TEST_SUITE( SexprParser, TEST_SEXPR_PARSER_FIXTURE )
 
 
BOOST_AUTO_TEST_CASE( Empty )
{
 const std::vector<TEST_SEXPR_CASE> cases = {
 {
 "Empty string",
 "",
 },
 {
 "whitespace",
 " ",
 },
 };
 
 for( const auto& c : cases )
 {
 BOOST_TEST_CONTEXT( c.m_case_name )
 {
 const auto data = Parse( c.m_sexpr_data );
 BOOST_CHECK_EQUAL( data.get(), nullptr );
 }
 }
}
 
BOOST_AUTO_TEST_CASE( Words )
{
 const std::string content{ "this is just writing" };
 const auto sexp = Parse( content );
 
 BOOST_REQUIRE_NE( sexp.get(), nullptr );
 BOOST_CHECK_PREDICATE( KI_TEST::SexprIsSymbolWithValue, ( *sexp )( "this" ) );
}
 
BOOST_AUTO_TEST_CASE( ParseExceptions )
{
 const std::vector<TEST_SEXPR_CASE> cases = {
 {
 "Unclosed (symbol",
 "(symbol",
 },
 {
 "Comma",
  ",",
 },
 {
 "Int only",
 "1",
 },
 {
 "Double only",
 "3.14",
 },
 {
 "Symbol only",
 "symbol",
 },
 // { // this is OK for some reason
 // "String only",
 // "\"string\"",
 // },
 };
 
 for( const auto& c : cases )
 {
 BOOST_TEST_CONTEXT( c.m_case_name )
 {
 BOOST_CHECK_THROW( Parse( c.m_sexpr_data ), SEXPR::PARSE_EXCEPTION );
 }
 }
}
 
BOOST_AUTO_TEST_CASE( EmptyParens )
{
 const std::string content{ "()" };
 const auto sexp = Parse( content );
 
 BOOST_REQUIRE_NE( sexp.get(), nullptr );
 BOOST_CHECK_PREDICATE( KI_TEST::SexprIsListOfLength, ( *sexp )( 0 ) );
}
 
BOOST_AUTO_TEST_CASE( SimpleSymbol )
{
 const std::string content{ "(symbol)" };
 const auto sexp = Parse( content );
 
 BOOST_REQUIRE_NE( sexp.get(), nullptr );
 BOOST_REQUIRE_PREDICATE( KI_TEST::SexprIsListOfLength, ( *sexp )( 1 ) );
 
 const SEXPR::SEXPR& child = *sexp->GetChild( 0 );
 BOOST_CHECK_PREDICATE( KI_TEST::SexprIsSymbolWithValue, ( child )( "symbol" ) );
}
 
BOOST_AUTO_TEST_CASE( SymbolString )
{
 const std::string content{ "(symbol \"string\" 42 3.14 (nested 4 ()))" };
 const auto sexp = Parse( content );
 
 BOOST_REQUIRE_NE( sexp.get(), nullptr );
 BOOST_REQUIRE_PREDICATE( KI_TEST::SexprIsListOfLength, ( *sexp )( 5 ) );
 
 BOOST_CHECK_PREDICATE( KI_TEST::SexprIsSymbolWithValue, ( *sexp->GetChild( 0 ) )( "symbol" ) );
 BOOST_CHECK_PREDICATE( KI_TEST::SexprIsStringWithValue, ( *sexp->GetChild( 1 ) )( "string" ) );
 BOOST_CHECK_PREDICATE( KI_TEST::SexprIsIntegerWithValue, ( *sexp->GetChild( 2 ) )( 42 ) );
 BOOST_CHECK_PREDICATE( KI_TEST::SexprIsDoubleWithValue, ( *sexp->GetChild( 3 ) )( 3.14 ) );
 
 // and child list
 const SEXPR::SEXPR& sublist = *sexp->GetChild( 4 );
 BOOST_REQUIRE_PREDICATE( KI_TEST::SexprIsListOfLength, ( sublist )( 3 ) );
 BOOST_CHECK_PREDICATE(
 KI_TEST::SexprIsSymbolWithValue, ( *sublist.GetChild( 0 ) )( "nested" ) );
 BOOST_CHECK_PREDICATE( KI_TEST::SexprIsIntegerWithValue, ( *sublist.GetChild( 1 ) )( 4 ) );
 BOOST_CHECK_PREDICATE( KI_TEST::SexprIsListOfLength, ( *sublist.GetChild( 2 ) )( 0 ) );
}
 
 
struct TEST_SEXPR_ROUNDTRIPPING
{
 std::string m_case_name;
 std::string m_input;
};
 
BOOST_AUTO_TEST_CASE( StringRoundtrip )
{
 const std::vector<TEST_SEXPR_ROUNDTRIPPING> cases = {
 {
 "empty list",
 "()",
 },
 {
 "simple list",
 "(42 3.14 \"string\")",
 },
 {
 "nested list", // REVIEW space after 42?
 "(42 \n (1 2))",
 },
 };
 
 for( const auto& c : cases )
 {
 BOOST_TEST_CONTEXT( c.m_case_name )
 {
 const auto sexp = Parse( c.m_input );
 
 const std::string as_str = sexp->AsString();
 
 BOOST_CHECK_PREDICATE( KI_TEST::SexprConvertsToString, ( *sexp )( c.m_input ) );
 }
 }
}
 
BOOST_AUTO_TEST_SUITE_END()