public void AddOperationRecognition()
{
var operation = @"+";
var provider = new BasicOperationProvider();
Assert.True(provider.IsOperation(operation));
}
public void IncorrectOperationNoRecognition()
{
var incorrectOperation = @"#";
var provider = new BasicOperationProvider();
Assert.False(provider.IsOperation(incorrectOperation));
}
public void DivAndSibCorrectComparsion()
{
var div = @"/";
var sub = @"-";
var provider = new BasicOperationProvider();
Assert.True(provider.ComparePriority(div, sub) > 0);
}
public void AddAndMulCorrectComparsion()
{
var add = @"+";
var mul = @"*";
var provider = new BasicOperationProvider();
Assert.True(provider.ComparePriority(add, mul) < 0);
}
public void AddAndSubCorrectComparsion()
{
var add = @"+";
var sub = @"-";
var provider = new BasicOperationProvider();
Assert.True(provider.ComparePriority(add, sub) == 0);
}
public void ComplexExpressionCorrectCalculation()
{
var operationProvider = new BasicOperationProvider();
var converter = new PostfixConverterSortStation(operationProvider);
var executor = new PostfixExecutor(operationProvider);
var input = @"4 * 5 - 27 / 3";
var calculator = new Calculator(converter, executor);
var result = calculator.Calculate(input);
Assert.Equal(11, result);
}
public void DivisionByZeroExceptionThrow()
{
var operationProvider = new BasicOperationProvider();
var converter = new PostfixConverterSortStation(operationProvider);
var executor = new PostfixExecutor(operationProvider);
var input = @"13 / 0";
var calculator = new Calculator(converter, executor);
Assert.Throws(typeof(DivideByZeroException), () =>
{
calculator.Calculate(input);
});
}
public void MissingOperandExpressionExceptionThrow()
{
var operationProvider = new BasicOperationProvider();
var converter = new PostfixConverterSortStation(operationProvider);
var executor = new PostfixExecutor(operationProvider);
var input = @"2 + + 7";
var calculator = new Calculator(converter, executor);
Assert.Throws(typeof(IncorrectExpressionException), () =>
{
calculator.Calculate(input);
});
}
public void ComplexExpressionCorrectPostfixString()
{
var operationProvider = new BasicOperationProvider();
var infix = @"3 * 10 - 26 / 13";
var postfixConverter = new PostfixConverterSortStation(operationProvider);
var postfix = postfixConverter.Convert(infix);
Assert.Equal(@"3 10 * 26 13 / -", postfix);
}
public void IncorrectCharactersInInputStringExceptionThrow()
{
var operationProvider = new BasicOperationProvider();
var infix = @"2asb + 7";
var postfixConverter = new PostfixConverterSortStation(operationProvider);
Assert.Throws(typeof(IncorrectCharacterException), () =>
{
postfixConverter.Convert(infix);
});
}