// [InlineData(1000, 0.001F, 20, 0.01F)]
public async Task Simulate_particles_collisions_tests(
float time,
float timeStep,
int stepsPerSnapshot,
float particlesBounceEfficiencyFactor)
{
World.ParticlesBounceFactor = particlesBounceEfficiencyFactor;
const string simulationInitStateId = "particles_collisions_test_init_state";
var fileWorldStateLoader = new FileWorldStateLoader(_filePathBuilder);
var worldInitState = fileWorldStateLoader.First(simulationInitStateId);
var simulationId = $"particles_collisions_test_T_{time}_TS_{timeStep}_SPS_{stepsPerSnapshot}_BE_{particlesBounceEfficiencyFactor}";
DeleteSimulationSnapshotsFile(simulationId);
var worldSimulator = new WorldSimulator(_fileWorldStateSaver);
await worldSimulator.RunWorldAsync(worldInitState, new SimulationParams(time, timeStep, simulationId, stepsPerSnapshot));
var worldFinalState = worldSimulator.WorldTimeSteps.Last();
var particlesFinalVelocity = worldFinalState.Particles.Select(p => p.V.Length()).ToArray();
var particlesInitVelocity = worldInitState.Particles.Select(p => p.V.Length()).ToArray();
for (int i = 0; i < particlesInitVelocity.Length; i++)
{
particlesFinalVelocity[i].Should().BeInRange(
particlesInitVelocity[i] * particlesBounceEfficiencyFactor / 1.01F,
particlesInitVelocity[i] * particlesBounceEfficiencyFactor * 1.01F
);
}
}
public async Task WorldSnapshotIsSavedAfterEveryStep(int simulationTime, int expectedSnapshotCount)
{
// arrange
var world = RandomWorld(4);
var worldSimulator = new WorldSimulator(new FileWorldStateSaver(_filePathBuilder));
await worldSimulator.RunWorldAsync(world, new SimulationParams(simulationTime, 1, SimulationId, 1));
var fileWorldStateLoader = new FileWorldStateLoader(_filePathBuilder);
// act
var snapshots = fileWorldStateLoader.All(SimulationId).ToArray();
// assert
snapshots.Length.Should().Be(expectedSnapshotCount);
var snapshotsAsJson = snapshots.Select(JsonConvert.SerializeObject);
var expectedSnapshots = worldSimulator.WorldTimeSteps.Select(JsonConvert.SerializeObject);
snapshotsAsJson.Should().BeEquivalentTo(expectedSnapshots);
}
// [InlineData(1000, 0.2F, 5, 0.2)]
// [InlineData(1000, 0.05F, 5, 0.8)]
// [InlineData(100, 0.01F, 10, 1)]
public async Task Run_particles_triangular_random_benchmark_world_parametrized(
float time,
float timeStep,
int stepsPerSnapshot,
float particlesBounceEfficiencyFactor)
{
World.ParticlesBounceFactor = particlesBounceEfficiencyFactor;
var simulationInitStateId = "particles_triangular_random_init_state";
var fileWorldStateLoader = new FileWorldStateLoader(_filePathBuilder);
var worldInitState = fileWorldStateLoader.First(simulationInitStateId);
var simulationId = $"particles_triangular_random_T_{time}_TS_{timeStep}_SPS_{stepsPerSnapshot}_BE_{particlesBounceEfficiencyFactor}";
DeleteSimulationSnapshotsFile(simulationId);
var worldSimulator = new WorldSimulator(_fileWorldStateSaver);
await worldSimulator.RunWorldAsync(worldInitState, new SimulationParams(time, timeStep, simulationId, stepsPerSnapshot));
}
public async Task CanLoadSimulationFirstAndLastStep()
{
// arrange
var world = RandomWorld(4);
var worldSimulator = new WorldSimulator(new FileWorldStateSaver(_filePathBuilder));
await worldSimulator.RunWorldAsync(world, new SimulationParams(3, 1, SimulationId, 1));
var fileWorldStateLoader = new FileWorldStateLoader(_filePathBuilder);
// act
var firstSnapshot = fileWorldStateLoader.First(SimulationId);
var lastSnapshot = fileWorldStateLoader.Last(SimulationId);
// assert
var firstSnapshotAsJson = JsonConvert.SerializeObject(firstSnapshot);
var expectedFirstWorldAsJson = JsonConvert.SerializeObject(worldSimulator.WorldTimeSteps.First());
firstSnapshotAsJson.Should().Be(expectedFirstWorldAsJson);
var lastSnapshotAsJson = JsonConvert.SerializeObject(lastSnapshot);
var expectedLastWorldAsJson = JsonConvert.SerializeObject(worldSimulator.WorldTimeSteps.Last());
lastSnapshotAsJson.Should().Be(expectedLastWorldAsJson);
}