public void DelimiterOnlyShouldResultInZero()
{
const string testInput = ",";
var expectedResult = new StringCalculationResult(0, "0+0");
RunTest(testInput, expectedResult);
}
public void CalculatorSupportsMultiplication()
{
const string testInput = "5,(*)5";
var expectedResults = new StringCalculationResult(5 * 5, "5*5");
RunTest(testInput, expectedResults);
}
public void MultiCharacterDelimitersAreNotSupportedWithoutBrackets()
{
var testInput = $"//abc\n1,abc,1000{Environment.NewLine}1001,60abc10";
var expectedResult = new StringCalculationResult(1001, "1+0+1000+0+0");
RunTest(testInput, expectedResult);
}
public void EnvironmentNewLineCharacterSupported()
{
var testInput = $"1{Environment.NewLine}5";
var expectedResult = new StringCalculationResult(6, "1+5");
RunTest(testInput, expectedResult);
}
public void NewLineCharacterSupported()
{
const string testInput = "4\n9";
var expectedResult = new StringCalculationResult(13, "4+9");
RunTest(testInput, expectedResult);
}
public void LeadingAdditionIgnoresImplicitZeroToBeginningOfFormula()
{
const string testInput = "(+)5,(/)5";
var expectedResults = new StringCalculationResult(5 / 5, "5/5");
RunTest(testInput, expectedResults);
}
public void LeadingDivisionAddsImplicitZeroToBeginningOfFormula()
{
const string testInput = "(/)5,(/)5";
var expectedResults = new StringCalculationResult((0 / 5) / 5, "0/5/5");
RunTest(testInput, expectedResults);
}
public void AllowNumericCustomDelimiter()
{
var testInput = $"//5\n1,5,1000{Environment.NewLine}1001,60510";
var expectedResult = new StringCalculationResult(1071, "1+0+0+1000+0+60+10");
RunTest(testInput, expectedResult);
}
public void DelimiterAndNumberShouldReturnTheNumber()
{
const string testInput = ",5";
var expectedResult = new StringCalculationResult(5, "0+5");
RunTest(testInput, expectedResult);
}
public void CalculatorSupportsExplicitAddition()
{
const string testInput = "5,(+)5";
var expectedResults = new StringCalculationResult(5 + 5, "5+5");
RunTest(testInput, expectedResults);
}
public void CalculatorSupportsManyValues()
{
var testInput = "1,2,3,4,5,6,7,8,9,10,11,12";
var expectedResult = new StringCalculationResult(78, "1+2+3+4+5+6+7+8+9+10+11+12");
RunTest(testInput, expectedResult);
}
public void TwoNumericOperandsShouldBeAddedTogether()
{
const string testInput = "3,21";
var expectedResult = new StringCalculationResult(24, "3+21");
RunTest(testInput, expectedResult);
}
public void EmptyStringShouldResultInZero()
{
var testInput = string.Empty;
var expectedResult = new StringCalculationResult(0, "0+0");
RunTest(testInput, expectedResult);
}
public void StringAndNumberOperandsShouldReturnNumber()
{
const string testInput = "hrtr,21";
var expectedResult = new StringCalculationResult(21, "0+21");
RunTest(testInput, expectedResult);
}
public void NumberAndStringOperandsShouldReturnNumber()
{
const string testInput = "22,fdhreg";
var expectedResult = new StringCalculationResult(22, "22+0");
RunTest(testInput, expectedResult);
}
public void StringOperandsShouldBeIgnoredAsZero()
{
const string testInput = "fdhreg";
var expectedResult = new StringCalculationResult(0, "0+0");
RunTest(testInput, expectedResult);
}
public void TextNewLineCharacterSupported()
{
const string testInput = "2\\n8";
var expectedResult = new StringCalculationResult(10, "2+8");
RunTest(testInput, expectedResult);
}
public void CalculatorSupportsSubtraction()
{
const string testInput = "5,(-)5";
var expectedResults = new StringCalculationResult(5 - 5, "5-5");
RunTest(testInput, expectedResults);
}
public void AllowMultiCharCustomDelimiter()
{
var testInput = $"//[abc]\n1abc5,1000{Environment.NewLine}1001abc5000";
var expectedResult = new StringCalculationResult(1006, "1+5+1000+0+0");
RunTest(testInput, expectedResult);
}
public void IgnoreValuesGreaterThanOneThousand()
{
const string testInput = "1,5,1000,1001,5000,10";
var expectedResult = new StringCalculationResult(1016, "1+5+1000+0+0+10");
RunTest(testInput, expectedResult);
}
public void AllowASingleCustomDelimiter()
{
var testInput = $"//;\n1;5,1000{Environment.NewLine}1001,5000";
var expectedResult = new StringCalculationResult(1006, "1+5+1000+0+0");
RunTest(testInput, expectedResult);
}
public void CalculatorSupportsDivision()
{
const string testInput = "5,(/)5";
var expectedResults = new StringCalculationResult(5 / 5, "5/5");
RunTest(testInput, expectedResults);
}
public void AllTermsGreaterThanMaxValueShouldPassAsAllZero()
{
const string testInput = "10000,5000,1001,5000";
var expectedResult = new StringCalculationResult(0, "0+0+0+0");
RunTest(testInput, expectedResult);
}
public void NumberOnlyShouldReturnTheNumber()
{
// It's tempting to select a random value, but you lose control over what is being tested - and if you fail for specific values, your test may pass or fail randomly.
// Better to implement regression tests for known bad states when identified.
const string testInput = "5";
var expectedResult = new StringCalculationResult(5, "5+0");
RunTest(testInput, expectedResult);
}