public void SayHelloFactory_Should_Throw_Aggregate_Exception_When_Two_Duplicates()
{
var duplicateInstance1 = new English.EnglishHello();
var duplicateInstance2 = new French.FrenchHello();
var instances = new List <ISayHello> {
new English.EnglishHello(), new EnglishInformal.EnglishInformalHello(), new French.FrenchHello(), duplicateInstance1, duplicateInstance2
};
var expectedMessage1 = DuplicateLanguageException.GetMessage(duplicateInstance1.Language,
instances.IndexOf(duplicateInstance1), duplicateInstance1.GetType());
var expectedMessage2 = DuplicateLanguageException.GetMessage(duplicateInstance2.Language,
instances.IndexOf(duplicateInstance2), duplicateInstance2.GetType());
AggregateException exceptionCaught = null;
var expectedMessages = new[] { expectedMessage1, expectedMessage2 };
try
{
var dummy = new SayHelloFactory(instances);
}
catch (Exception ex)
{
exceptionCaught = ex as AggregateException;
}
Assert.NotNull(exceptionCaught);
exceptionCaught.InnerExceptions.Cast <DuplicateLanguageException>().Select(d => d.Message).Should().BeEquivalentTo(expectedMessages);
}
public void SayHelloFactory_Should_Throw_Exception_With_Null_Parameter()
{
Action actionToTest = () =>
{
var dummy = new SayHelloFactory(null);
};
actionToTest.Should().Throw <ArgumentNullException>();
}
public void SayHelloFactory_Should_Throw_Single_Exception_When_One_Duplicate()
{
var duplicateInstance = new English.EnglishHello();
var instances = new List<ISayHello> {
new English.EnglishHello(), new EnglishInformal.EnglishInformalHello(), new French.FrenchHello(), duplicateInstance
};
var expectedMessage = DuplicateLanguageException.GetMessage(duplicateInstance.Language,
instances.IndexOf(duplicateInstance), duplicateInstance.GetType());
new Action(() =>
{
var dummy = new SayHelloFactory(instances);
}).Should().Throw<DuplicateLanguageException>().WithMessage(expectedMessage);
}
public void SayHelloFactory_Should_Ignore_Null_Instances_In_Parameter()
{
var instances = new ISayHello[] {
new English.EnglishHello(), new EnglishInformal.EnglishInformalHello(), new French.FrenchHello()
};
IEnumerable<ISayHello> InterleavedEnumerable()
{
foreach (var instance in instances)
{
yield return instance;
yield return null;
}
}
var sut = new SayHelloFactory(InterleavedEnumerable());
sut.GetAllHellos().Should().BeEquivalentTo(instances.Cast<object>());
}
