import static org.junit.Assert.$*$;

import org.junit.Before;

import org.junit.Test;

$//-------------------------------------------------------------------------$

$/**$

$*$ Test class for Calculator.

$*$

$*$ @author Stephen Edwards

$*$ @version $2006\mathrm{.}06\mathrm{.}14$

$*/$

public class CalculatorTest $\{$

$//$~ Setup $.................................................................$

$//$~ Instance$/$static variables $.............................................$

private Calculator calc;

$//----------------------------------------------------------$

$/**$

$*$ Creates a new Calculator object with zero in the accumulator.

$*/$

@Before

public void setUp$()$

$\{$

calc $=$ new Calculator$()$;

$\}$

$//$~ Public Methods $........................................................$

$//----------------------------------------------------------$

$/**$

$*$ Check that a new calculator starts off with a zero value.

$*/$

@Test

public void initial$()$

$\{$

assertEquals$(0,$ calc.getValue$())$;

$\}$

$//----------------------------------------------------------$

$/**$

$*$ Check setValue$/$getValue$.$

$*/$

@Test

public void setValue$()$

$\{$

calc.setValue$(37)$;

assertEquals$(37,$ calc.getValue$())$;

calc.setValue$(-42)$;

assertEquals$(-42,$ calc.getValue$())$;

$\}$

$//----------------------------------------------------------$

$/**$

$*$ Check that clear returns the accumulator to zero.

$*/$

@Test

public void clear$()$

$\{$

calc.setValue$(49)$;

calc.clear$()$;

assertEquals$(0,$ calc.getValue$())$;

$\}$

$//----------------------------------------------------------$

$/**$

$*$ Check that add works on zero and non$-$zero accumulators.

$*/$

@Test

public void addition$()$

$\{$

$//$ Add your own test actions here

calc.setValue$(5)$;

calc.add$(5)$;

assertEquals$(10,$ calc.getValue$())$;

calc.add$(-1)$;

assertEquals$(9,$ calc.getValue$())$;

$\}$

$//----------------------------------------------------------$

$/**$

$*$ Check that subtract works on zero and non$-$zero accumulators.

$*/$

@Test

public void subtraction$()$

$\{$

$//$ Add your own test actions here

fail$("$Define your test"$)$;

$\}$

$//----------------------------------------------------------$

$/**$

$*$ Check that multiplyBy works on non$-$zero accumulators.

$*/$

@Test

public void multiplication$()$

$\{$

$//$ Add your own test actions here

fail$("$Define your test"$)$;

$\}$

$//----------------------------------------------------------$

$/**$

$*$ Check that divideBy works on non$-$zero accumulators.

$*/$

@Test

public void division$()$

$\{$

$//$ Add your own test actions here

calc.setValue$(20)$;

calc.divideBy$(5)$;

assertEquals$(4,$ calc.getValue$())$;

calc.setValue$(20)$;

calc.divideBy$(2)$;

assertEquals$(10,$ calc.getValue$())$;

$\}$

$\}$