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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 <iostream>

#include <core/model/Domain.hpp>

#include "TestDomain.hpp"

namespace ousia {
namespace model {

void assert_path(std::vector<Rooted<Managed>> &result, size_t idx,
                 const RttiBase &expected_type,
                 std::vector<std::string> expected_path)
{
	ASSERT_TRUE(result.size() > idx);
	// check class/type
	ASSERT_TRUE(result[idx]->isa(expected_type));
	// cast to node
	Rooted<Node> n = result[idx].cast<Node>();
	// extract actual path
	std::vector<std::string> actual_path = n->path();
	// check path
	ASSERT_EQ(expected_path, actual_path);
}

TEST(Domain, testDomainResolving)
{
	// Construct Manager
	Manager mgr{1};
	// Get the domain.
	Rooted<Domain> domain = constructBookDomain(mgr);

	/*
	 * Start with the "book" search keyword. This should resolve to the domain
	 * itself (because it is called "book"), as well as the structure "book"
	 * node.
	 */
	std::vector<Rooted<Managed>> res =
	    domain->resolve(std::vector<std::string>{"book"});
	// First we expect the book domain.
	assert_path(res, 0, typeOf<Domain>(), {"book"});
	// Then the book structure.
	assert_path(res, 1, typeOf<StructuredClass>(), {"book", "book"});
	ASSERT_EQ(2, res.size());

	/*
	 * If we explicitly ask for the "book, book" path, then only the
	 * StructuredClass should be returned.
	 */
	res = domain->resolve(std::vector<std::string>{"book", "book"});
	assert_path(res, 0, typeOf<StructuredClass>(), {"book", "book"});
	ASSERT_EQ(1, res.size());

	/*
	 * If we ask for "section" the result should be unique as well.
	 */
	res = domain->resolve(std::vector<std::string>{"section"});
	// TODO: Is that the path result we want?
	assert_path(res, 0, typeOf<StructuredClass>(), {"book", "section"});
	ASSERT_EQ(1, res.size());

	/*
	 * If we ask for the path "book", "book", "" we reference the
	 * FieldDescriptor of the StructuredClass "book".
	 */
	res = domain->resolve(std::vector<std::string>{"book", "book", ""});
	assert_path(res, 0, typeOf<FieldDescriptor>(), {"book", "book", ""});
	ASSERT_EQ(1, res.size());

	/*
	 * If we ask for "paragraph" it is references two times in the Domain graph,
	 * but should be returned only once.
	 */
	res = domain->resolve("paragraph");
	assert_path(res, 0, typeOf<StructuredClass>(), {"book", "paragraph"});
	ASSERT_EQ(1, res.size());
}
}
}