public void Be_Creatable()
{
var sut = new AggregateProvideSuggestions(Enumerable.Empty <IProvideSuggestions>());
sut.Should().NotBeNull();
sut.Should().BeAssignableTo <IProvideSuggestions>();
}
public void Handle_Null_Result()
{
var p1 = Substitute.For <IProvideSuggestions>();
p1.For(Arg.Any <string>(), Arg.Any <string>())
.ReturnsForAnyArgs(new[] { "A", "B" });
var p2 = Substitute.For <IProvideSuggestions>();
p2.For(Arg.Any <string>(), Arg.Any <string>())
.ReturnsForAnyArgs((string[])null);
var sut = new AggregateProvideSuggestions(new[] { p1, p2 });
var sug = sut.For("jo", "cs").ToArray();
p1.Received(1).For(Arg.Any <string>(), Arg.Any <string>());
p2.Received(1).For(Arg.Any <string>(), Arg.Any <string>());
sug.Should().Contain("A");
sug.Should().Contain("B");
}