def test_only_one_decimal_point_can_be_added_to_the_current_number_string():
test_class = maths.Math()
test_class.enter_number("5")
test_class.decimal_point(".")
test_class.enter_number("2")
test_class.decimal_point(".")
assert test_class.current_number == "5.2"
def test_decimal_point_is_added_when_there_is_an_integer_in_current_number_and_the_decimal_point_is_appended(
):
test_class = maths.Math()
test_class.enter_number("1")
test_class.enter_number("7")
test_class.decimal_point(".")
assert test_class.current_number == "17."
def test_numbers_can_be_appended_to_current_number_string_after_a_decimal_point_press(
):
test_class = maths.Math()
test_class.enter_number("5")
test_class.decimal_point(".")
test_class.enter_number("2")
assert test_class.current_number == "5.2"
def test_successive_number_presses_are_appended_to_current_number():
test_class = maths.Math()
test_class.enter_number("5")
test_class.enter_number("1")
test_class.enter_number("3")
test_class.enter_number("9")
assert test_class.current_number == "5139"
def test_decimal_number_can_be_entered_as_the_second_calue_in_an_equation():
test_class = maths.Math()
test_class.enter_number("5")
test_class.operator("-")
test_class.enter_number("1")
test_class.enter_number(".")
test_class.enter_number("8")
assert test_class.current_number == "1.8"
def test_decimal_numbers_rounded_to_8_decimal_places_when_sum_is_calculated():
test_class = maths.Math()
test_class.enter_number("5")
test_class.decimal_point(".")
test_class.enter_number("2")
test_class.enter_number("2")
test_class.enter_number("2")
test_class.enter_number("2")
test_class.enter_number("2")
test_class.enter_number("2")
test_class.enter_number("2")
test_class.enter_number("2")
test_class.enter_number("2")
test_class.enter_number("2")
test_class.operator("+")
test_class.enter_number("0")
test_class.calculate("=")
assert test_class.current_number == "5.22222222"
def test_fresh_calculator_has_stored_number_as_nothing_by_default():
test_class = maths.Math()
assert test_class.stored_number == ""
def test_decimal_point_is_added_when_no_number_has_been_input_and_is_appended_to_zero(
):
test_class = maths.Math()
test_class.decimal_point(".")
assert test_class.current_number == "0."
def test_fresh_calculator_has_current_number_as_zero_by_default():
test_class = maths.Math()
assert test_class.current_number == "0"
def test_fresh_calculator_sets_input_as_current_number():
test_class = maths.Math()
test_class.enter_number("5")
assert test_class.current_number == "5"
def test_fresh_calculator_has_operator_pressed_as_false_by_default():
test_class = maths.Math()
assert test_class.operator_pressed == False