public void Add_digit_to_number()
{
var mna = new MockNumberAssembler();
var sut = new Application(mna, null);
Assert.AreEqual(2, sut.Assemble_number("23"));
Assert.AreEqual("23", mna._Digits);
}
public void Execute_operator()
{
var mna = new MockNumberAssembler();
var mc = new MockCalculator();
var sut = new Application(mna, mc);
mna._Number = 42;
Assert.AreEqual(420, sut.Calculate("+"));
Assert.AreEqual(420, mna.Number);
}
public void Run_application()
{
var sut = new Application(new NumberAssembler(), new Calculator());
Assert.AreEqual(2, sut.Assemble_number("2"));
Assert.AreEqual(20, sut.Assemble_number("0"));
Assert.AreEqual(20, sut.Calculate("+"));
Assert.AreEqual(3, sut.Assemble_number("3"));
Assert.AreEqual(34, sut.Assemble_number("4"));
Assert.AreEqual(54, sut.Calculate("*"));
Assert.AreEqual(4, sut.Assemble_number("4"));
Assert.AreEqual(40, sut.Assemble_number("0"));
Assert.AreEqual(2160, sut.Calculate("="));
Assert.AreEqual(2160, sut.Calculate("+"));
Assert.AreEqual(2, sut.Assemble_number("2"));
Assert.AreEqual(20, sut.Assemble_number("0"));
Assert.AreEqual(2180, sut.Calculate("="));
}