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/** ---------------------------------------------------------------------------
* -*- c++ -*-
* @file: particlebody_test.cpp
*
* Copyright (c) 2017 Yann Herklotz Grave <ymherklotz@gmail.com>
* MIT License, see LICENSE file for more details.
* ----------------------------------------------------------------------------
*/
#include <gtest/gtest.h>
#include <yage/physics/particlebody.h>
#include <cmath>
#include <cstdlib>
double gravityAcceleration(int iterations)
{
yage::ParticleBody body;
for (int i = 0; i < 60 * iterations; ++i) {
body.update();
}
return body.yPosition();
}
// Tests
TEST(ParticleBody, Gravity)
{
int randomItr = rand() % 10;
double idealPosition = 0.5 * -9.81 * std::pow(randomItr, 2);
ASSERT_GE(idealPosition * 0.95, gravityAcceleration(randomItr));
ASSERT_LE(idealPosition * 1.05, gravityAcceleration(randomItr));
}
int main(int argc, char **argv)
{
testing::InitGoogleTest(&argc, argv);
srand(static_cast<unsigned>(time(nullptr)));
return RUN_ALL_TESTS();
}
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