public void ShouldCorrectlyHandleDecimalPoint()
{
var calcPad = new CalculatorPad();
calcPad.Execute("1.1");
Assert.Equal("1.1", calcPad.Entry);
}
public void ShouldInterpretStringAsCommands()
{
var calcPad = new CalculatorPad();
calcPad.Execute("1+1=");
Assert.Equal("2", calcPad.Entry);
}
public void ShouldHandleLongChainOfCommandsAsString()
{
var calcPad = new CalculatorPad();
calcPad.Execute("10*================");
Assert.Equal("100000000000000000", calcPad.Entry);
}
public void ShouldHandleSingleMultiplicationCorrectly()
{
var calcPad = new CalculatorPad();
calcPad.Six();
calcPad.Multiply();
calcPad.Six();
Assert.Equal("6", calcPad.Entry);
}
public void ShouldPerformDivisionOnItselfWhenEqualsButtonIsPressed()
{
var calcPad = new CalculatorPad();
calcPad.One();
calcPad.Zero();
calcPad.Divide();
calcPad.EqualsButton();
Assert.Equal("1", calcPad.Entry);
}
public void ShouldPerformMultiplicationOnItselfWhenEqualsButtonIsPressed()
{
var calcPad = new CalculatorPad();
calcPad.One();
calcPad.Zero();
calcPad.Multiply();
calcPad.EqualsButton();
Assert.Equal("100", calcPad.Entry);
}
public void ShouldHandleMultiplyByZeroCorrectly()
{
var calcPad = new CalculatorPad();
calcPad.Zero();
calcPad.Multiply();
calcPad.EqualsButton();
calcPad.Six();
calcPad.Multiply();
calcPad.Six();
calcPad.EqualsButton();
Assert.Equal("36", calcPad.Entry);
}
public void ShouldCorrectlyHandleChangingOperation()
{
var calcPad = new CalculatorPad();
calcPad.One();
calcPad.Zero();
calcPad.Minus();
calcPad.Plus();
calcPad.One();
calcPad.Zero();
calcPad.EqualsButton();
Assert.Equal("20", calcPad.Entry);
}
public void ShouldResetEventsAfterEqualsButtonIsPressed()
{
var calcPad = new CalculatorPad();
calcPad.One();
calcPad.Zero();
calcPad.Divide();
calcPad.EqualsButton();
calcPad.Six();
calcPad.Multiply();
calcPad.Six();
calcPad.EqualsButton();
Assert.Equal("36", calcPad.Entry);
}
public void ShouldReturnCorrectNumberAfterMultiplyByZero()
{
var calcPad = new CalculatorPad();
calcPad.Six();
calcPad.Multiply();
calcPad.Zero();
calcPad.EqualsButton();
Assert.Equal("0", calcPad.Entry);
calcPad.Six();
calcPad.Multiply();
calcPad.Six();
calcPad.EqualsButton();
Assert.Equal("36", calcPad.Entry);
}
public void ShouldPerformLastOperationOnNewValueEnteredIfEqualsButtonIsPressed()
{
var calcPad = new CalculatorPad();
calcPad.One();
calcPad.Zero();
calcPad.Divide();
calcPad.EqualsButton();
Assert.Equal("1", calcPad.Entry);
calcPad.Six();
calcPad.EqualsButton();
Assert.Equal("0.6", calcPad.Entry);
calcPad.Four();
calcPad.Five();
calcPad.EqualsButton();
Assert.Equal("4.5", calcPad.Entry);
}
