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/*
Ousía
Copyright (C) 2014, 2015 Benjamin Paaßen, Andreas Stöckel
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 <core/common/Rtti.hpp>
#include <core/parser/stack/State.hpp>
namespace ousia {
namespace parser_stack {
static const Rtti t1;
static const Rtti t2;
static const Rtti t3;
static const Rtti t4;
static const Rtti t5;
static const State s1 = StateBuilder().createdNodeType(&t1);
static const State s2a =
StateBuilder().parent(&s1).createdNodeType(&t2);
static const State s2b =
StateBuilder().parent(&s1).createdNodeType(&t2);
static const State s3 =
StateBuilder().parents({&s2a, &s1}).createdNodeType(&t3);
static const State s4 =
StateBuilder().parent(&s3).createdNodeType(&t4);
static const State s5 =
StateBuilder().parent(&s2b).createdNodeType(&t5);
TEST(StateDeductor, deduce)
{
using Result = std::vector<const State *>;
using Signature = std::vector<const Rtti *>;
std::vector<const State *> states{&s1, &s2a, &s2b, &s3, &s4, &s5};
// Should not crash on empty signature
ASSERT_EQ(Result{}, StateDeductor(Signature{}, states).deduce());
// Try repeating signature elements
ASSERT_EQ(Result({&s1}),
StateDeductor(Signature({&t1}), states).deduce());
ASSERT_EQ(Result({&s1}),
StateDeductor(Signature({&t1, &t1}), states).deduce());
ASSERT_EQ(Result({&s1}),
StateDeductor(Signature({&t1, &t1, &t1}), states).deduce());
// Go to another state
ASSERT_EQ(Result({&s2a, &s2b}),
StateDeductor(Signature({&t1, &t1, &t2}), states).deduce());
ASSERT_EQ(Result({&s4}),
StateDeductor(Signature({&t1, &t3, &t4}), states).deduce());
// Skip one state
ASSERT_EQ(Result({&s4}),
StateDeductor(Signature({&t2, &t4}), states).deduce());
// Impossible signature
ASSERT_EQ(Result({}),
StateDeductor(Signature({&t4, &t5}), states).deduce());
}
}
}
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