def test_should_return_true_if_both_executables_succeed(self): self.assertTrue(can_optimize_images())
def test_should_return_false_if_png_executables_fail(self): self.assertFalse(can_optimize_images())
def test_should_return_true_if_both_executables_succeed(self): self.assertTrue(can_optimize_images())
def test_should_return_false_if_png_executables_fail(self): self.assertFalse(can_optimize_images())