protected static IEnumerable <ExpectResult> CompareAssert(
IEvent <T>[] expected,
IEvent <T>[] actual)
{
var max = Math.Max(expected.Length, actual.Length);
for (int i = 0; i < max; i++)
{
var ex = expected.Skip(i).FirstOrDefault();
var ac = actual.Skip(i).FirstOrDefault();
var expectedString = ex == null ? "No event expected" : Describe.Object(ex);
var actualString = ac == null ? "No event actually" : Describe.Object(ac);
var result = new ExpectResult {
Expectation = expectedString
};
var realDiff = CompareObjects.FindDifferences(ex, ac);
if (!string.IsNullOrEmpty(realDiff))
{
var stringRepresentationsDiffer = expectedString != actualString;
result.Failure = stringRepresentationsDiffer ?
GetAdjusted("Was: ", actualString) :
GetAdjusted("Diff: ", realDiff);
}
yield return(result);
}
}
public IEnumerable <ExpectationResult> Assert(object fromWhen)
{
var actual = ((IEvent <T>[])fromWhen);
// structurally equal comparison
for (int i = 0; i < _expected.Count; i++)
{
var expectedHumanReadable = Describe.Object(_expected[i]);
if (actual.Length > i)
{
var diffs = CompareObjects.FindDifferences(_expected[i], actual[i]);
if (string.IsNullOrEmpty(diffs))
{
yield return(new ExpectationResult
{
Passed = true,
Text = expectedHumanReadable
});
}
else
{
var actualHumanReadable = Describe.Object(actual[i]);
if (actualHumanReadable != expectedHumanReadable)
{
var msg = PrintEvil.GetAdjusted("Was: ", actualHumanReadable);
// there is a difference in textual representations
yield return(new ExpectationResult
{
Passed = false,
Text = expectedHumanReadable,
Exception = new InvalidOperationException(msg)
});
}
else
{
yield return(new ExpectationResult
{
Passed = false,
Text = expectedHumanReadable,
Exception = new InvalidOperationException(diffs)
});
}
}
}
else
{
yield return(new ExpectationResult
{
Passed = false,
Text = expectedHumanReadable,
Exception = new InvalidOperationException(" Message is missing")
});
}
}
for (int i = _expected.Count; i < actual.Count(); i++)
{
var msg = PrintEvil.GetAdjusted("Was: ", Describe.Object(actual[i]));
yield return(new ExpectationResult
{
Passed = false,
Text = "Unexpected message",
Exception = new InvalidOperationException(msg)
});
}
}