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/*
* Copyright (C) 2017-2018 Olzhas Rakhimov
*
* 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/>.
*/
/// @file
/// Helper workarounds or additions to Qt Test.
#pragma once
#include <string>
#include <type_traits>
#include <utility>
#include <vector>
#include <QObject>
#include <QtTest>
namespace QTest {
/// Specialization to print standard strings.
///
/// @warning This is a C string API in Qt C++ code!!!
/// The caller must deallocate the returned string.
/// This is only specialized for QCOMPARE to print better messages.
/// @{
template <>
inline char *toString(const std::string &value)
{
return qstrdup(value.c_str());
}
template <>
inline char *toString(const std::vector<std::string> &value)
{
std::string result = "{";
for (const auto &item : value) {
result += item;
result += ", ";
}
result += " }";
return toString(result);
}
/// @}
} // namespace QTest
/// Helper macro to workaround the limitation of QCOMPARE,
/// not being able to deal with "comparable" values of different types.
#define TEST_EQ(actual, expected) \
QCOMPARE(actual, std::decay_t<decltype(actual)>(expected))
namespace ext {
/// Signal spy that preserves the concrete types of signal arguments.
/// The interface is similar to QSignalSpy,
/// but instead of a list of QVariant, a tuple of argument values are returned.
///
/// @tparam Ts The signal parameter types.
/// Must be copy constructible.
template <typename... Ts>
class SignalSpy : public QObject,
public std::vector<std::tuple<std::decay_t<Ts>...>>
{
public:
/// @tparam T The type deriving from QObject.
/// @tparam U The base type of T or itself.
///
/// @param[in] sender The sender object to be spied on.
/// @param[in] sig The member signal of the object.
template <class T, class U>
SignalSpy(const T *sender, void (U::*sig)(Ts...))
{
connect(sender, sig, this, &SignalSpy::accept, Qt::DirectConnection);
}
private:
/// Stores the signal arguments.
void accept(Ts... args) { this->emplace_back(args...); }
};
} // namespace ext
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