/// <summary>
/// Returns the exception to be thrown when <see cref="Mock.Verify"/> finds no invocations (or the wrong number of invocations) that match the specified expectation.
/// </summary>
internal static MockException NoMatchingCalls(
Mock rootMock,
LambdaExpression expression,
string failMessage,
Times times,
int callCount)
{
var message = new StringBuilder();
message.AppendLine(failMessage ?? "")
.Append(times.GetExceptionMessage(callCount))
.AppendLine(expression.PartialMatcherAwareEval().ToStringFixed())
.AppendLine()
.AppendLine(Resources.PerformedInvocations)
.AppendLine();
var visitedMocks = new HashSet <Mock>();
var mocks = new Queue <Mock>();
mocks.Enqueue(rootMock);
while (mocks.Any())
{
var mock = mocks.Dequeue();
if (visitedMocks.Contains(mock))
{
continue;
}
visitedMocks.Add(mock);
message.AppendLine(mock == rootMock ? $" {mock} ({expression.Parameters[0].Name}):"
: $" {mock}:");
var invocations = mock.MutableInvocations.ToArray();
if (invocations.Any())
{
message.AppendLine();
foreach (var invocation in invocations)
{
message.Append($" {invocation}");
if (invocation.Method.ReturnType != typeof(void) && Unwrap.ResultIfCompletedTask(invocation.ReturnValue) is IMocked mocked)
{
var innerMock = mocked.Mock;
mocks.Enqueue(innerMock);
message.Append($" => {innerMock}");
}
message.AppendLine();
}
}
else
{
message.AppendLine($" {Resources.NoInvocationsPerformed}");
}
message.AppendLine();
}
return(new MockException(MockExceptionReasons.NoMatchingCalls, message.TrimEnd().AppendLine().ToString()));
}