/// <summary>Write the custom failure message for this object's <see cref="CollectionEquivalentConstraint"/>.</summary>
/// <param name="writer">The <see cref="MessageWriter"/> to write the failure message to.</param>
public override void WriteMessageTo(MessageWriter writer)
{
//Write the expected/actual message first.
base.WriteMessageTo(writer);
if (_tallyResult.MissingItems.Count > 0)
{
int missingItemsCount = _tallyResult.MissingItems.Count;
string missingStr = $"Missing ({missingItemsCount}): ";
missingStr += MsgUtils.FormatCollection(_tallyResult.MissingItems, 0, MaxDifferingElemsToWrite);
writer.WriteMessageLine(missingStr);
}
if (_tallyResult.ExtraItems.Count > 0)
{
int extraItemsCount = _tallyResult.ExtraItems.Count;
string extraStr = $"Extra ({extraItemsCount}): ";
extraStr += MsgUtils.FormatCollection(_tallyResult.ExtraItems, 0, MaxDifferingElemsToWrite);
writer.WriteMessageLine(extraStr);
}
}
/// <summary>Write any additional lines (following <c>Expected:</c> and <c>But was:</c>) for a failing constraint.</summary>
/// <param name="writer">The <see cref="MessageWriter"/> to write the failure message to.</param>
public override void WriteAdditionalLinesTo(MessageWriter writer)
{
if (_tallyResult.MissingItems.Count > 0)
{
int missingItemsCount = _tallyResult.MissingItems.Count;
string missingStr = $"Missing ({missingItemsCount}): ";
missingStr += MsgUtils.FormatCollection(_tallyResult.MissingItems);
writer.WriteMessageLine(missingStr);
}
if (_tallyResult.ExtraItems.Count > 0)
{
int extraItemsCount = _tallyResult.ExtraItems.Count;
string extraStr = $"Extra ({extraItemsCount}): ";
extraStr += MsgUtils.FormatCollection(_tallyResult.ExtraItems);
writer.WriteMessageLine(extraStr);
}
}
/// <summary>
/// Writes the text for a collection value,
/// starting at a particular point, to a max length
/// </summary>
/// <param name="collection">The collection containing elements to write.</param>
/// <param name="start">The starting point of the elements to write</param>
/// <param name="max">The maximum number of elements to write</param>
public override void WriteCollectionElements(IEnumerable collection, long start, int max)
{
Write(MsgUtils.FormatCollection(collection, start, max));
}