public void Find_The_Correct_Alias_If_Multiple_Exist()
{
// arrange
var builder = new ContextBuilder()
.AddParser("a")
.Finish
.AddParser("b")
.WithAlias("C")
.Finish
.AddParser("c")
.WithAlias("C")
.Finish
.AddParser("d")
.Finish
.CreateParentChildRelationship("a", "b")
.CreateParentChildRelationship("b", "c")
.CreateParentChildRelationship("c", "d");
var strat = new ParserChainIdentificationStrategy(builder.Context);
var request = new ChainIdentificationRequest("C C d".Split(' '), builder.Context);
// act
var res = strat.Identify(request);
// assert
res.Chain.Should()
.BeEquivalentTo("a b c d".Split(' ').Select(x => builder.Context.ParserRepository.Get(x)));
res.ConsumedArgs.Should().BeEquivalentTo("C C d".Split(' '));
}
public void Work_When_No_Aliases_Are_Defined()
{
// arrange
var builder = new ContextBuilder()
.AddParser("a")
.Finish
.AddParser("b")
.Finish
.AddParser("c")
.Finish
.AddParser("d")
.Finish
.AddParser("e")
.Finish
.CreateParentChildRelationship("a", "b")
.CreateParentChildRelationship("b", "c")
.CreateParentChildRelationship("c", "d")
.CreateParentChildRelationship("a", "e");
var strat = new ParserChainIdentificationStrategy(builder.Context);
var request = new ChainIdentificationRequest("b c d".Split(' '), builder.Context);
// act
var res = strat.Identify(request);
// assert
res.Chain.Should()
.BeEquivalentTo("a b c d".Split(' ').Select(x => builder.Context.ParserRepository.Get(x)));
}
public void Return_The_Root_If_There_Are_No_Args()
{
// arrange
var builder = new ContextBuilder()
.AddParser("a")
.Finish;
var strat = new ParserChainIdentificationStrategy(builder.Context);
var request = new ChainIdentificationRequest(new string[0], builder.Context);
// act
var res = strat.Identify(request);
// assert
res.Chain.Single().Should().Be(builder.Context.RootParser());
res.ConsumedArgs.Should().BeEmpty();
}
public void Throw_If_There_Is_An_Ambiguous_Match()
{
// arrange
var builder = new ContextBuilder()
.AddParser("a")
.Finish
.AddParser("b")
.WithAlias("C")
.Finish
.AddParser("c")
.WithAlias("C")
.Finish
.CreateParentChildRelationship("a", "b")
.CreateParentChildRelationship("a", "c");
var strat = new ParserChainIdentificationStrategy(builder.Context);
var request = new ChainIdentificationRequest("C C".Split(' '), builder.Context);
Action mightThrow = () => strat.Identify(request);
// act
// assert
mightThrow.Should().Throw <AmbiguousCommandChainException>().And.MatchingSequences.Should().HaveCount(2);
}
public void Allow_Aliases_To_Be_Used()
{
// arrange
var builder = new ContextBuilder()
.AddParser("a")
.Finish
.AddParser("b")
.Finish
.AddParser("c")
.WithAlias("C")
.Finish
.CreateParentChildRelationship("a", "b")
.CreateParentChildRelationship("b", "c");
var strat = new ParserChainIdentificationStrategy(builder.Context);
var request = new ChainIdentificationRequest("b C".Split(' '), builder.Context);
// act
var res = strat.Identify(request);
// assert
res.Chain.Should().HaveCount(3);
res.Chain.Should().BeEquivalentTo("a b c".Split(' ').Select(x => builder.Context.ParserRepository.Get(x)));
}
