public void ColorOfFirTreeIsGreen()
{
//arrange
FirTree firTree = new FirTree();
//act
//assert
Assert.AreEqual(TreeColor.Green, firTree.Color);
}
public void FirTreeBornAndGrow()
{
//arrange
FirTree firTree = new FirTree();
//act
firTree.GrowUp(10.0);
//assert
Assert.AreEqual(10.0 , firTree.Height);
}
public void ChangeGrowingSpeed()
{
//arrange
FirTree firTree = new FirTree();
//act
firTree.GrowUp(10.0);
firTree.GrowingSpeed = 1.3;
firTree.GrowUp();
//assert
Assert.AreEqual(11.3, firTree.Height);
}