/// <summary>
/// Asserts that the specification is met.
/// </summary>
/// <param name="builder">The specification builder.</param>
/// <param name="comparer">The exception comparer.</param>
public static void Assert(
this IExceptionCentricAggregateCommandTestSpecificationBuilder builder,
IExceptionComparer comparer)
{
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
if (comparer == null)
{
throw new ArgumentNullException(nameof(comparer));
}
var specification = builder.Build();
var runner = new ExceptionCentricAggregateCommandTestRunner(comparer);
var result = runner.Run(specification);
if (result.Failed)
{
if (result.ButException.HasValue)
{
if (result.ButException.Value.GetType() != result.Specification.Throws.GetType())
{
using (var writer = new StringWriter())
{
writer.WriteLine(" Expected: {0},", result.Specification.Throws);
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
}
}
using (var writer = new StringWriter())
{
writer.WriteLine(" Expected: {0},", result.Specification.Throws);
writer.WriteLine(" But found the following differences:");
foreach (var difference in comparer.Compare(result.Specification.Throws, result.ButException.Value))
{
writer.WriteLine(" {0}", difference.Message);
}
#if NUNIT
throw new NUnit.Framework.AssertionException(writer.ToString());
#elif XUNIT
throw new Xunit.Sdk.XunitException(writer.ToString());
#endif
}
}
if (result.ButEvents.HasValue)
{
using (var writer = new StringWriter())
{
writer.WriteLine(" Expected: {0},", result.Specification.Throws);
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},", result.Specification.Throws);
writer.WriteLine(" But no exception occurred");
#if NUNIT
throw new NUnit.Framework.AssertionException(writer.ToString());
#elif XUNIT
throw new Xunit.Sdk.XunitException(writer.ToString());
#endif
}
}
}
public static void Assert(this IExceptionCentricAggregateCommandTestSpecificationBuilder builder)
{
builder.Assert(CreateExceptionComparer());
}
