Moq.VerifyLogUnexpectedException #15
Description
When running unit tests to verify logger is called as expected, Moq.ILogger threw this exception:
Moq.VerifyLogUnexpectedException : Moq.ILogger found an unexpected exception.
----> System.ArgumentNullException : Value cannot be null. (Parameter 'body')
Stack Trace:
VerifyLogExtensions.Verify[T](Mock`1 loggerMock, Expression`1 expression, Nullable`1 times, Func`1 timesFunc, String failMessage)
VerifyLogExtensions.VerifyLog(Mock`1 loggerMock, Expression`1 expression, Func`1 times)
<>c__DisplayClass22_0.<ExampleAsync_HallOfFameInducteesNotEmpty_NoDuplicateIds_ValidatorIsValidTrue_RetrieveBOExecuteSuccessful_NewEntryAlreadyInSameCategory_ErrorSet>b__1() line 250
Assert.Multiple(TestDelegate testDelegate)
BusinessLogic.ExampleAsync_HallOfFameInducteesNotEmpty_NoDuplicateIds_ValidatorIsValidTrue_RetrieveBOExecuteSuccessful_NewEntryAlreadyInSameCategory_ErrorSet() line 248
GenericAdapter`1.GetResult()
AsyncToSyncAdapter.Await(Func`1 invoke)
TestMethodCommand.RunTestMethod(TestExecutionContext context)
TestMethodCommand.Execute(TestExecutionContext context)
<>c__DisplayClass1_0.<Execute>b__0()
DelegatingTestCommand.RunTestMethodInThreadAbortSafeZone(TestExecutionContext context, Action action)
--ArgumentNullException
ContractUtils.RequiresNotNull(Object value, String paramName, Int32 index)
ExpressionUtils.RequiresCanRead(Expression expression, String paramName, Int32 idx)
Expression.ValidateLambdaArgs(Type delegateType, Expression& body, ReadOnlyCollection`1 parameters, String paramName)
Expression.Lambda[TDelegate](Expression body, String name, Boolean tailCall, IEnumerable`1 parameters)
Expression.Lambda[TDelegate](Expression body, Boolean tailCall, IEnumerable`1 parameters)
VerifyLogExpressionArgs.From(Expression expression)
VerifyLogExpression.From(Expression expression)
VerifyLogExtensions.Verify[T](Mock`1 loggerMock, Expression`1 expression, Nullable`1 times, Func`1 timesFunc, String failMessage)
Code:
public async Task ExampleAsync(IEnumerable<Models.HallOfFame> hallOfFameInductees, CancellationToken cancellationToken = default)
{
var currentHallOfFamers = (await RetrieveBO.ExecuteAsync(cancellationToken)).ToList();
var alreadyInducted = (from current in currentHallOfFamers
from inductee in hallOfFameInductees
where current.BowlerId == inductee.BowlerId
where AlreadyInducted(inductee, current)
select inductee).ToList();
if (alreadyInducted.Count > 0)
{
Logger.LogError("Bowler(s) {alreadyInducted} already inducted to hall of fame", alreadyInducted);
ErrorDetails.Add(new Models.ErrorDetail("Invalid Addition: Bowler already inducted"));
return;
}
DataLayer.Execute(hallOfFameInductees);
await DataAccess.CommitAsync(LocalTransaction, cancellationToken);
}
private static bool AlreadyInducted(Models.HallOfFame inductee, Models.HallOfFame current)
=> current.Category == Models.HallOfFameTypes.Combined || current.Category == inductee.Category;Unit Test (hallOfFameInductees and hallOfFamers generated via Bogus, Fluent calls override properties set via Bogus):
[Test]
public async Task ExampleAsync_RetrieveBOExecuteSuccessful_NewEntryAlreadyInSameCategory_LoggerLogError_CalledCorrectly()
{
var hallOfFameInductees = new[] { new Builders.Models.HallOfFame()
.WithBowlerId(1)
.WithYear(2000)
.WithCategory(NEBA.Models.HallOfFameTypes.Performance)
.Generate()};
var hallOfFamers = new[] { new Builders.Models.HallOfFame()
.WithBowlerId(1)
.WithYear(1999)
.WithCategory(NEBA.Models.HallOfFameTypes.Performance)
.Generate()};
_retrieveBO.Setup(retrieveBO => retrieveBO.ExecuteAsync(It.IsAny<CancellationToken>())).ReturnsAsync(hallOfFamers);
await _businessLogic.ExampleAsync(hallOfFameInductees);
_logger.VerifyLog(logger => logger.LogError("Bowler(s) {alreadyInducted} already inducted to hall of fame", hallOfFameInductees), Times.Once);
}Models:
/// <summary>
///
/// </summary>
public sealed class HallOfFame
{
/// <summary>
///
/// </summary>
/// <value></value>
public int Id { get; set; }
/// <summary>
///
/// </summary>
/// <value></value>
public int BowlerId { get; set; }
/// <summary>
///
/// </summary>
/// <value></value>
public int Year { get; set; }
/// <summary>
///
/// </summary>
/// <value></value>
public HallOfFameTypes Category { get; set; }
}
/// <summary>
///
/// </summary>
public enum HallOfFameTypes
{
/// <summary>
///
/// </summary>
Performance = 100,
/// <summary>
///
/// </summary>
Service = 200,
/// <summary>
///
/// </summary>
Combined = 300,
/// <summary>
///
/// </summary>
Friend = 500
}Metadata
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