target = codesters.Sprite("triangle", -100, -100) target.set_opacity(.5) target.reflect_x_axis() text = codesters.Text('target', -50, 50) text.set_size(.8) text.set_opacity(.8)

t = codesters.Teacher() reflections = t.find_text('reflect') try: tval1 = t.find_text('reflect')[0][1] tval1a = sprite.get_x() tval1b = sprite.get_y() except: tval1 = "DNE" tval1a = "DNE" tval1b = "DNE" try: tval2 = t.find_text('rotate') except: tval2 = "DNE" try: tval3 = t.find_text('translate') except: tval3 = "DNE" t1 = TestObjective() t1.add_success('x_axis' in tval1 and tval1a == -100 and tval1b == 100 and len(reflections) ==1, "Great job!") t1.add_failure(tval1 == "DNE", "Try a Geometry Transformation command that maps your sprite to the target!") t1.add_failure('y_axis' in tval1, "Oops! Try the other axis!") t1.add_failure('x_axis' in tval1 and (tval1a != -100 or tval1b != 100), "Oops! Did you move your sprite before doing your reflection?") t2 = TestObjective() t2.add_failure(tval2 != [], "That's not the transofrmation we're looking for here. Try choosing the transformation maps one onto the other in 1 step.") t2.add_failure(tval3 != [], "Try using a different transformation to map one triangle onto the other.") tester = TestManager() tester.display_graphics = False tester.add_test_list([t1, t2]) tester.run_tests() tester.display_first_feedback()