public static string GetAssertMessage(string expected, string actual, bool escapeQuotes = false, string expectedValueSourcePath = null, int expectedValueSourceLine = 0)
{
return(GetAssertMessage(DiffUtil.Lines(expected), DiffUtil.Lines(actual), escapeQuotes, expectedValueSourcePath, expectedValueSourceLine));
}
public static string GetAssertMessage <T>(
IEnumerable <T> expected,
IEnumerable <T> actual,
IEqualityComparer <T> comparer = null,
string prefix = null,
Func <T, string> itemInspector = null,
string itemSeparator = null,
string expectedValueSourcePath = null,
int expectedValueSourceLine = 0)
{
if (itemInspector == null)
{
if (typeof(T) == typeof(byte))
{
itemInspector = b => $"0x{b:X2}";
}
else
{
itemInspector = new Func <T, string>(obj => (obj != null) ? obj.ToString() : "<null>");
}
}
if (itemSeparator == null)
{
if (typeof(T) == typeof(byte))
{
itemSeparator = ", ";
}
else
{
itemSeparator = "," + Environment.NewLine;
}
}
var expectedString = string.Join(itemSeparator, expected.Take(10).Select(itemInspector));
var actualString = string.Join(itemSeparator, actual.Select(itemInspector));
var message = new StringBuilder();
if (!string.IsNullOrEmpty(prefix))
{
message.AppendLine(prefix);
message.AppendLine();
}
message.AppendLine("Expected:");
message.AppendLine(expectedString);
if (expected.Count() > 10)
{
message.AppendLine("... truncated ...");
}
message.AppendLine("Actual:");
message.AppendLine(actualString);
message.AppendLine("Differences:");
message.AppendLine(DiffUtil.DiffReport(expected, actual, itemSeparator, comparer, itemInspector));
if (TryGenerateExpectedSourceFileAndGetDiffLink(actualString, expected.Count(), expectedValueSourcePath, expectedValueSourceLine, out var link))
{
message.AppendLine(link);
}
return(message.ToString());
}