@Test
  public void testSalvarMateria() {
    System.out.println("SalvarMateria");
    Materia materia = new Materia(11, "Teste");
    MateriaRepository instance = new MateriaRepository();
    instance.SalvarMateria(materia);

    Materia result = instance.BuscarMateria(materia.Descricao());
    assertEquals(materia.Id(), result.Id());
  }
  @Test
  public void testAlterarMateriaDeveRetornarTrue() {
    System.out.println("AlterarMateria");
    MateriaRepository instance = new MateriaRepository();

    Materia materia = instance.BuscarMateria("LPII");
    materia.Descricao("LP2");

    boolean ret = instance.AlterarMateria(materia);
    assertEquals(true, ret);

    materia = instance.BuscarMateria("LP2");
    materia.Descricao("LPII");
    ret = instance.AlterarMateria(materia);
  }