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fluid_test.cc
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fluid_test.cc
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/**
* \file
*
* \brief tests for Fluid
*/
#include "fluid_test.h"
Properties pos(double x, double y){
Properties props;
props.x = x;
props.y = y;
props.u = 0;
props.v = 0;
props.density = 0;
props.energy = 0;
props.pressure = 0;
props.mass = 0;
return props;
}
/// tests Fluid::addBoundary and Fluid::getBoundaries
TEST_F (FluidTest,checkAddGetBoundary){
fluid_->addBoundary(0,propsb_);
Fluid::ParticleArray parts = fluid_->getBoundaries();
EXPECT_EQ(0,parts[0]->getTag());
}
/// tests Fluid::resetNeighbors undoes neighbor tags
TEST_F (FluidTest,checkResetNeighbors){
initFluid();
// if findNeighbors is working (see above test)
// then this should produce different data
Fluid::ParticleArray parts = fluid_->getParticles();
fluid_->findNeighbors();
fluid_->resetNeighbors();
Particle::TagArray neighbors = parts[0]->getNeighbors();
EXPECT_EQ(-1,neighbors[0]);
EXPECT_EQ(-1,neighbors[1]);
neighbors = parts[1]->getNeighbors();
EXPECT_EQ(-1,neighbors[0]);
EXPECT_EQ(-1,neighbors[1]);
}
/// tests Fluid::getKernel
TEST_F (FluidTest,checkGetKernel){
Kernel &kernel = fluid_->getKernel();
// this is here only to assert that Fluid::getKernel works,
double x = -99999;
EXPECT_NE(x,kernel.W(1));
}
/// tests Fluid::getNParticles
TEST_F (FluidTest,checkGetNParticles){
initFluid();
EXPECT_EQ(3,fluid_->getNParticles());
}
/// tests Fluid::getNBoundaries
TEST_F (FluidTest,checkGetNBoundaries){
initFluid();
EXPECT_EQ(1,fluid_->getNBoundaries());
}
/// tests Fluid::resetParticles updates particle properties
TEST_F (FluidTest,checkResetParticles){
initFluid();
Properties props1 = props1_;
Properties props2 = props2_;
Properties props3;
props1.x = props1_.x + 1;
props2.density = props2_.density - 1;
Fluid::ParticleArray parts1(2);
parts1[0].reset(new Particle(0,2,0,props1));
parts1[1].reset(new Particle(1,2,0,props2));
fluid_->resetParticles(parts1);
Fluid::ParticleArray parts2 = fluid_->getParticles();
props3 = parts2[0]->getOldProperties();
EXPECT_FLOAT_EQ(props3.x,props1_.x+1);
props3 = parts2[1]->getOldProperties();
EXPECT_FLOAT_EQ(props3.density,props1_.density-1);
}
/// tests Fluid::findNeighbors - implementation specific
TEST_F (FluidTest,_checkFindNeighbors){
double sl = 2;
int np = 2;
int nb = 0;
boost::shared_ptr<Fluid> fl;
std::vector< boost::shared_ptr<Particle> > parts;
std::vector<int>neighbs;
boost::shared_ptr<Kernel> ker;
ker.reset(new GaussianKernel(sl));
// check current square is neighbor
fl.reset(new Fluid(*ker,np,nb,sl));
fl->addParticle(0,pos(0,0));
fl->addParticle(1,pos(1,0));
fl->findNeighbors();
parts = fl->getParticles();
neighbs = parts[0]->getNeighbors();
EXPECT_EQ(neighbs[0],1);
EXPECT_EQ(neighbs[1],-1);
neighbs = parts[1]->getNeighbors();
EXPECT_EQ(neighbs[0],0);
EXPECT_EQ(neighbs[1],-1);
fl.reset(new Fluid(*ker,np,nb,sl));
fl->addParticle(0,pos(0,0));
fl->addParticle(1,pos(0,1));
fl->findNeighbors();
parts = fl->getParticles();
neighbs = parts[0]->getNeighbors();
EXPECT_EQ(neighbs[0],1);
EXPECT_EQ(neighbs[1],-1);
neighbs = parts[1]->getNeighbors();
EXPECT_EQ(neighbs[0],0);
EXPECT_EQ(neighbs[1],-1);
fl.reset(new Fluid(*ker,np,nb,sl));
fl->addParticle(0,pos(0,0));
fl->addParticle(1,pos(1,1));
fl->findNeighbors();
parts = fl->getParticles();
neighbs = parts[0]->getNeighbors();
EXPECT_EQ(neighbs[0],1);
EXPECT_EQ(neighbs[1],-1);
neighbs = parts[1]->getNeighbors();
EXPECT_EQ(neighbs[0],0);
EXPECT_EQ(neighbs[1],-1);
// check one right is neighbor
fl.reset(new Fluid(*ker,np,nb,sl));
fl->addParticle(0,pos(0,0));
fl->addParticle(1,pos(3,0));
fl->findNeighbors();
parts = fl->getParticles();
neighbs = parts[0]->getNeighbors();
EXPECT_EQ(neighbs[0],1);
EXPECT_EQ(neighbs[1],-1);
neighbs = parts[1]->getNeighbors();
EXPECT_EQ(neighbs[0],0);
EXPECT_EQ(neighbs[1],-1);
// check one up is neighbor
fl.reset(new Fluid(*ker,np,nb,sl));
fl->addParticle(0,pos(0,0));
fl->addParticle(1,pos(0,3));
fl->findNeighbors();
parts = fl->getParticles();
neighbs = parts[0]->getNeighbors();
EXPECT_EQ(neighbs[0],1);
EXPECT_EQ(neighbs[1],-1);
neighbs = parts[1]->getNeighbors();
EXPECT_EQ(neighbs[0],0);
EXPECT_EQ(neighbs[1],-1);
// check one up, one right is neighbor
fl.reset(new Fluid(*ker,np,nb,sl));
fl->addParticle(0,pos(0,0));
fl->addParticle(1,pos(3,3));
fl->findNeighbors();
parts = fl->getParticles();
neighbs = parts[0]->getNeighbors();
EXPECT_EQ(neighbs[0],1);
EXPECT_EQ(neighbs[1],-1);
neighbs = parts[1]->getNeighbors();
EXPECT_EQ(neighbs[0],0);
EXPECT_EQ(neighbs[1],-1);
// check two right has no neighbors
fl.reset(new Fluid(*ker,np,nb,sl));
fl->addParticle(0,pos(0,0));
fl->addParticle(1,pos(5,0));
fl->findNeighbors();
parts = fl->getParticles();
neighbs = parts[0]->getNeighbors();
EXPECT_EQ(neighbs[0],-1);
EXPECT_EQ(neighbs[1],-1);
neighbs = parts[1]->getNeighbors();
EXPECT_EQ(neighbs[0],-1);
EXPECT_EQ(neighbs[1],-1);
// check two above has no neighbors
fl.reset(new Fluid(*ker,np,nb,sl));
fl->addParticle(0,pos(0,0));
fl->addParticle(1,pos(0,5));
fl->findNeighbors();
parts = fl->getParticles();
neighbs = parts[0]->getNeighbors();
EXPECT_EQ(neighbs[0],-1);
EXPECT_EQ(neighbs[1],-1);
neighbs = parts[1]->getNeighbors();
EXPECT_EQ(neighbs[0],-1);
EXPECT_EQ(neighbs[1],-1);
// check two right, one up has no neighbors
fl.reset(new Fluid(*ker,np,nb,sl));
fl->addParticle(0,pos(0,0));
fl->addParticle(1,pos(5,3));
fl->findNeighbors();
parts = fl->getParticles();
neighbs = parts[0]->getNeighbors();
EXPECT_EQ(neighbs[0],-1);
EXPECT_EQ(neighbs[1],-1);
neighbs = parts[1]->getNeighbors();
EXPECT_EQ(neighbs[0],-1);
EXPECT_EQ(neighbs[1],-1);
// check two up, one right has no neighbors
fl.reset(new Fluid(*ker,np,nb,sl));
fl->addParticle(0,pos(0,0));
fl->addParticle(1,pos(3,5));
fl->findNeighbors();
parts = fl->getParticles();
neighbs = parts[0]->getNeighbors();
EXPECT_EQ(neighbs[0],-1);
EXPECT_EQ(neighbs[1],-1);
neighbs = parts[1]->getNeighbors();
EXPECT_EQ(neighbs[0],-1);
EXPECT_EQ(neighbs[1],-1);
// check two up, two right has no neighbors
fl.reset(new Fluid(*ker,np,nb,sl));
fl->addParticle(0,pos(0,0));
fl->addParticle(1,pos(5,5));
fl->findNeighbors();
parts = fl->getParticles();
neighbs = parts[0]->getNeighbors();
EXPECT_EQ(neighbs[0],-1);
EXPECT_EQ(neighbs[1],-1);
neighbs = parts[1]->getNeighbors();
EXPECT_EQ(neighbs[0],-1);
EXPECT_EQ(neighbs[1],-1);
}