public string HighlightDifferences(string expected, string actual)
{
if (expected == null)
{
expected = "null";
}
if (actual == null)
{
actual = "null";
}
expected = _transform(expected);
actual = _transform(actual);
int maxLengthOfStrings = Math.Max(actual.Length, expected.Length);
var output = new StringBuilder();
if (maxLengthOfStrings < maxDiffLength)
{
var formattedDetailedDiffString = new FormattedDetailedDifferenceString(actual, expected, _sensitivity, 0);
output.Append(formattedDetailedDiffString);
return(output.ToString());
}
else
{
var indicesOfAllDiffs = GetIndicesOfAllDifferences(actual, expected);
var differenceIndexConsolidator = new DifferenceIndexConsolidator(maxDiffLength, maxLengthOfStrings, indicesOfAllDiffs);
var startIndicesOfAllDiffs = differenceIndexConsolidator.GetConsolidatedIndices();
if (startIndicesOfAllDiffs.Count > maxNumberOfDiffs)
{
output.AppendLine(string.Format("Showing some of the {0} differences", indicesOfAllDiffs.Count));
startIndicesOfAllDiffs = startIndicesOfAllDiffs.Take(maxNumberOfDiffs).ToList();
}
for (int index = 0; index < startIndicesOfAllDiffs.Count; index++)
{
var startIndexOfDiffString = startIndicesOfAllDiffs[index];
var trimmedActualValue = TrimmedValue(actual, startIndexOfDiffString);
var trimmedExpectedValue = TrimmedValue(expected, startIndexOfDiffString);
var prefixWithDots = startIndexOfDiffString != 0;
var suffixWithDots = startIndexOfDiffString + maxDiffLength < maxLengthOfStrings;
var formattedDetailedDiffString = new FormattedDetailedDifferenceString(
trimmedActualValue, trimmedExpectedValue, _sensitivity,
startIndexOfDiffString, prefixWithDots, suffixWithDots);
if (index > 0)
{
output.AppendLine();
output.AppendLine();
}
output.Append(formattedDetailedDiffString);
}
return(output.ToString());
}
}
public string HighlightDifferences(IShouldlyAssertionContext context)
{
var actualValue = context.Actual as string;
var expectedValue = context.Expected as string;
int maxLengthOfStrings = Math.Max(actualValue.Length, expectedValue.Length);
var output = new StringBuilder();
var caseSensitivity = context.CaseSensitivity ?? Case.Sensitive;
output.AppendLine(string.Format("{0}", caseSensitivity == Case.Insensitive ? "Case Insensitive Comparison" : "Case Sensitive Comparison"));
if (maxLengthOfStrings < maxDiffLength)
{
var formattedDetailedDiffString = new FormattedDetailedDifferenceString(actualValue, expectedValue, caseSensitivity, 0);
output.Append(formattedDetailedDiffString);
return(output.ToString());
}
else
{
var indicesOfAllDiffs = GetIndicesOfAllDifferences(actualValue, expectedValue, caseSensitivity);
var differenceIndexConsolidator = new DifferenceIndexConsolidator(maxDiffLength, maxLengthOfStrings, indicesOfAllDiffs);
var startIndicesOfAllDiffs = differenceIndexConsolidator.GetConsolidatedIndices();
if (startIndicesOfAllDiffs.Count > maxNumberOfDiffs)
{
output.AppendLine(string.Format("Showing some of the {0} differences", indicesOfAllDiffs.Count));
startIndicesOfAllDiffs = startIndicesOfAllDiffs.Take(maxNumberOfDiffs).ToList();
}
foreach (var startIndexOfDiffString in startIndicesOfAllDiffs)
{
string trimmedActualValue = "";
string trimmedExpectedValue = "";
if (startIndexOfDiffString < actualValue.Length)
{
if (actualValue.Length >= startIndexOfDiffString + maxDiffLength)
{
trimmedActualValue = actualValue.Substring(startIndexOfDiffString, maxDiffLength);
}
else
{
trimmedActualValue = actualValue.Substring(startIndexOfDiffString);
}
}
if (startIndexOfDiffString < expectedValue.Length)
{
if (expectedValue.Length >= startIndexOfDiffString + maxDiffLength)
{
trimmedExpectedValue = expectedValue.Substring(startIndexOfDiffString, maxDiffLength);
}
else
{
trimmedExpectedValue = expectedValue.Substring(startIndexOfDiffString);
}
}
var prefixWithDots = startIndexOfDiffString != 0;
var suffixWithDots = startIndexOfDiffString + maxDiffLength < maxLengthOfStrings;
var formattedDetailedDiffString = new FormattedDetailedDifferenceString(trimmedActualValue, trimmedExpectedValue, caseSensitivity, startIndexOfDiffString, prefixWithDots, suffixWithDots);
output.Append(formattedDetailedDiffString);
}
return(output.ToString());
}
}