serene/libserene/tests/environment_tests.cpp.inc

96 lines
2.5 KiB
C++

/* -*- C++ -*-
* Serene Programming Language
*
* Copyright (c) 2019-2022 Sameer Rahmani <lxsameer@gnu.org>
*
* 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, version 2.
*
* 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 "serene/environment.h"
#include "serene/exprs/expression.h"
#include "serene/exprs/symbol.h"
#include "serene/reader/location.h"
#include "serene/serene.h"
#include "./test_helpers.cpp.inc"
#include <catch2/catch_all.hpp>
#include <catch2/catch_test_macros.hpp>
#include <llvm/Support/Casting.h>
namespace serene {
TEST_CASE("Environment tests", "[environment]") {
std::unique_ptr<reader::LocationRange> range(dummyLocation());
exprs::Node sym = exprs::make<exprs::Symbol>(*range, "example", "ns");
Environment<exprs::Node> e;
llvm::Optional<exprs::Node> result = e.lookup("a");
REQUIRE_FALSE(result.hasValue());
auto status = e.insert_symbol("a", sym);
REQUIRE(status.succeeded());
result = e.lookup("a");
REQUIRE(result.hasValue());
CHECK(result.getValue() == sym);
auto *fetchedSym = llvm::dyn_cast<exprs::Symbol>(result.getValue().get());
REQUIRE(fetchedSym != nullptr);
CHECK(fetchedSym->name == "example");
CHECK(fetchedSym->nsName == "ns");
SECTION("Testing the environment copy") {
Environment<exprs::Node> e1(&e);
result = e1.lookup("b");
REQUIRE_FALSE(result.hasValue());
// It should lookup the value in the parent environment
result = e1.lookup("a");
REQUIRE(result.hasValue());
CHECK(result.getValue() == sym);
};
};
TEST_CASE("Test generic Environment usage", "[environment]") {
Environment<char> env;
auto result = env.lookup("blah");
REQUIRE_FALSE(result);
auto status = env.insert_symbol("blah", 'A');
REQUIRE(status.succeeded());
result = env.lookup("blah");
REQUIRE(result);
CHECK(*result == 'A');
result = env.lookup("blah");
REQUIRE(result);
CHECK(*result == 'A');
// Test the overwrite functionality
status = env.insert_symbol("blah", 'B');
REQUIRE(status.succeeded());
result = env.lookup("blah");
REQUIRE(result);
CHECK(*result == 'B');
}
} // namespace serene