public void Calculate_FromInvalidFile()
{
//arrange
var calculator = new FileCalculator(new FileProcessor());
//act
calculator.Calculate(_testFileName);
}
public void Calculate_FromValidFileInvalidCalculation()
{
//arrange
string[] input = { @"1+x+4" };
processorMock.Setup(x => x.GetContent(_testFileName)).Returns(input);
string[] actualResult = null;
processorMock.Setup(x => x.WriteContent(It.IsAny <string>())).Callback((string[] output) =>
{
actualResult = output;
});
var calculator = new FileCalculator(processorMock.Object);
//act
calculator.Calculate(_testFileName);
//assert
Assert.AreEqual($"1+x+4 = {_errorMessage}", actualResult[0]);
}
public void Calculate_FromValidFileDivisionByZero()
{
//arrange
string[] input = { @"5/0" };
processorMock.Setup(x => x.GetContent(_testFileName)).Returns(input);
string[] actualResult = null;
processorMock.Setup(x => x.WriteContent(It.IsAny <string>())).Callback((string[] output) =>
{
actualResult = output;
});
var calculator = new FileCalculator(processorMock.Object);
//act
calculator.Calculate(_testFileName);
//assert
Assert.AreEqual("5/0 = Division by zero", actualResult[0]);
}
public void Calculate_FromValidFileValidMultiLineCalculation()
{
//arrange
string[] input = { @"2+15/3+4*2", @"1+2*(3+2)" };
processorMock.Setup(x => x.GetContent(_testFileName)).Returns(input);
string[] actualResult = null;
processorMock.Setup(x => x.WriteContent(It.IsAny <string[]>())).Callback((string[] output) =>
{
actualResult = output;
});
var calculator = new FileCalculator(processorMock.Object);
//act
calculator.Calculate(_testFileName);
//assert
Assert.AreEqual("2+15/3+4*2 = 15", actualResult[0]);
Assert.AreEqual("1+2*(3+2) = 11", actualResult[1]);
}