/// <summary>
/// Asserts that the specification is met.
/// </summary>
/// <param name="builder">The specification builder.</param>
/// <param name="comparer">The event comparer.</param>
public static void Assert(
this IEventCentricAggregateCommandTestSpecificationBuilder builder,
IEventComparer comparer)
{
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
if (comparer == null)
{
throw new ArgumentNullException(nameof(comparer));
}
var specification = builder.Build();
var runner = new EventCentricAggregateCommandTestRunner(comparer);
var result = runner.Run(specification);
if (result.Failed)
{
if (result.ButException.HasValue)
{
using (var writer = new StringWriter())
{
writer.WriteLine(" Expected: {0} event(s),", result.Specification.Thens.Length);
writer.WriteLine(" But was: {0}", result.ButException.Value);
#if NUNIT
throw new NUnit.Framework.AssertionException(writer.ToString());
#elif XUNIT
throw new Xunit.Sdk.XunitException(writer.ToString());
#endif
}
}
if (result.ButEvents.HasValue)
{
if (result.ButEvents.Value.Length != result.Specification.Thens.Length)
{
using (var writer = new StringWriter())
{
writer.WriteLine(" Expected: {0} event(s) ({1}),",
result.Specification.Thens.Length,
string.Join(",", result.Specification.Thens.Select(_ => _.GetType().Name).ToArray()));
writer.WriteLine(" But was: {0} event(s) ({1})",
result.ButEvents.Value.Length,
string.Join(",", result.ButEvents.Value.Select(_ => _.GetType().Name).ToArray()));
#if NUNIT
throw new NUnit.Framework.AssertionException(writer.ToString());
#elif XUNIT
throw new Xunit.Sdk.XunitException(writer.ToString());
#endif
}
}
using (var writer = new StringWriter())
{
writer.WriteLine(" Expected: {0} event(s) ({1}),",
result.Specification.Thens.Length,
string.Join(",", result.Specification.Thens.Select(_ => _.GetType().Name).ToArray()));
writer.WriteLine(" But found the following differences:");
foreach (var difference in result
.Specification
.Thens
.Zip(result.ButEvents.Value, (expected, actual) => new Tuple <object, object>(expected, actual))
.SelectMany(_ => comparer.Compare(_.Item1, _.Item2)))
{
writer.WriteLine(" {0}", difference.Message);
}
#if NUNIT
throw new NUnit.Framework.AssertionException(writer.ToString());
#elif XUNIT
throw new Xunit.Sdk.XunitException(writer.ToString());
#endif
}
}
}
}
public static void Assert(this IEventCentricAggregateCommandTestSpecificationBuilder builder)
{
builder.Assert(CreateEventComparer());
}