Division Calculator

Calculator that can only divide.
Test task.

Requirements

• Input field

  • Valid characters for input are digits and /.
  • Input is invalid if it contains non-valid characters.
  • Input should be saved.
  • Input should be restored on app start.

• Evaluate button

  • If Evaluate button is clicked and input is valid then print an evaluation result in the Input field.
  • Evaluation algorithm should be simple.
  • If Evaluate button is clicked and input is invalid then print "Error" in the input field.
  • If Evaluate button is clicked and input is invalid then show the Error popup.

• Error popup:

  • Error popup has a New equation button.
    • If the New equation button is clicked then clear input field.
    • If the New equation button is clicked then close Error popup.
  • Error popup has a Quit button.
    • If the Quit button is clicked then clear saved input.
    • If the Quit button is clicked then close the app.

Feedback

Mark 4-:

• ICalculatorPresenter depends on ISorryDialogPresenter.
• ICalculatorPresenter took over part of the logic related to data storage.