public void TestApplyGravity()
{
var moons = Day12.ApplyGravity(new Moon[] {
Moon.Parse("<x=-1, y= 0, z= 2>"),
Moon.Parse("<x= 2, y=-10, z=-7>"),
Moon.Parse("<x= 4, y= -8, z= 8>"),
Moon.Parse("<x= 3, y= 5, z=-1>"),
});
Assert.Equal(3, moons[0].Velocity.X);
Assert.Equal(-1, moons[0].Velocity.Y);
Assert.Equal(-1, moons[0].Velocity.Z);
Assert.Equal(1, moons[1].Velocity.X);
Assert.Equal(3, moons[1].Velocity.Y);
Assert.Equal(3, moons[1].Velocity.Z);
Assert.Equal(-3, moons[2].Velocity.X);
Assert.Equal(1, moons[2].Velocity.Y);
Assert.Equal(-3, moons[2].Velocity.Z);
Assert.Equal(-1, moons[3].Velocity.X);
Assert.Equal(-3, moons[3].Velocity.Y);
Assert.Equal(1, moons[3].Velocity.Z);
}
public void ApplyGravity()
{
var solver = new Day12();
var moons = solver.Parse(Input);
moons = solver.ApplyGravity(moons);
moons[0].ToString().ShouldBe("pos=<x= 2, y=-1, z= 1>, vel=<x= 3, y=-1, z=-1>");
}
