public async Task SelectAsync_MultipleValidCandidatesInGroup_ReportsAmbiguity()
{
// Arrange
var endpoints = new MatcherEndpoint[] { CreateEndpoint("/test1"), CreateEndpoint("/test2"), CreateEndpoint("/test3"), };
var scores = new int[] { 0, 1, 1 };
var candidateSet = CreateCandidateSet(endpoints, scores);
candidateSet[0].IsValidCandidate = false;
candidateSet[1].IsValidCandidate = true;
candidateSet[2].IsValidCandidate = true;
var(httpContext, feature) = CreateContext();
var selector = CreateSelector();
// Act
var ex = await Assert.ThrowsAsync <AmbiguousMatchException>(() => selector.SelectAsync(httpContext, feature, candidateSet));
// Assert
Assert.Equal(
@"The request matched multiple endpoints. Matches:
test: /test2
test: /test3", ex.Message);
Assert.Null(feature.Endpoint);
}
public InnerMatcher(string[] segments, MatcherEndpoint endpoint)
{
_segments = segments;
Endpoint = endpoint;
_candidates = new Candidate[] { new Candidate(endpoint), };
}
public async Task SelectAsync_RunsEndpointSelectorPolicies()
{
// Arrange
var endpoints = new MatcherEndpoint[] { CreateEndpoint("/test1"), CreateEndpoint("/test2"), CreateEndpoint("/test3"), };
var scores = new int[] { 0, 0, 1 };
var candidateSet = CreateCandidateSet(endpoints, scores);
var policy = new Mock <MatcherPolicy>();
policy
.As <IEndpointSelectorPolicy>()
.Setup(p => p.Apply(It.IsAny <HttpContext>(), It.IsAny <CandidateSet>()))
.Callback <HttpContext, CandidateSet>((c, cs) =>
{
cs[1].IsValidCandidate = false;
});
candidateSet[0].IsValidCandidate = false;
candidateSet[1].IsValidCandidate = true;
candidateSet[2].IsValidCandidate = true;
var(httpContext, feature) = CreateContext();
var selector = CreateSelector(policy.Object);
// Act
await selector.SelectAsync(httpContext, feature, candidateSet);
// Assert
Assert.Same(endpoints[2], feature.Endpoint);
}
public async Task SelectAsync_ManyGroupsLastCandidate_ChoosesCandidate()
{
// Arrange
var endpoints = new MatcherEndpoint[]
{
CreateEndpoint("/test1"),
CreateEndpoint("/test2"),
CreateEndpoint("/test3"),
CreateEndpoint("/test4"),
CreateEndpoint("/test5"),
};
var scores = new int[] { 0, 1, 2, 3, 4 };
var candidateSet = CreateCandidateSet(endpoints, scores);
candidateSet[0].IsValidCandidate = false;
candidateSet[1].IsValidCandidate = false;
candidateSet[2].IsValidCandidate = false;
candidateSet[3].IsValidCandidate = false;
candidateSet[4].IsValidCandidate = true;
var(httpContext, feature) = CreateContext();
var selector = CreateSelector();
// Act
await selector.SelectAsync(httpContext, feature, candidateSet);
// Assert
Assert.Same(endpoints[4], feature.Endpoint);
}
public void Create_CreatesCandidateSet(int count)
{
// Arrange
var endpoints = new MatcherEndpoint[count];
for (var i = 0; i < endpoints.Length; i++)
{
endpoints[i] = CreateEndpoint($"/{i}");
}
var builder = CreateDfaMatcherBuilder();
var candidates = builder.CreateCandidates(endpoints);
// Act
var candidateSet = new CandidateSet(candidates);
// Assert
for (var i = 0; i < candidateSet.Count; i++)
{
ref var state = ref candidateSet[i];
Assert.True(state.IsValidCandidate);
Assert.Same(endpoints[i], state.Endpoint);
Assert.Equal(candidates[i].Score, state.Score);
Assert.Null(state.Values);
}
public override Endpoint Build()
{
var matcherEndpoint = new MatcherEndpoint(
Invoker,
RoutePattern,
Order,
new EndpointMetadataCollection(Metadata),
DisplayName);
return(matcherEndpoint);
}
public void Setup()
{
Endpoints = new MatcherEndpoint[1];
Endpoints[0] = CreateEndpoint("/plaintext");
Requests = new HttpContext[1];
Requests[0] = new DefaultHttpContext();
Requests[0].RequestServices = CreateServices();
Requests[0].Request.Path = "/plaintext";
_baseline = (TrivialMatcher)SetupMatcher(new TrivialMatcherBuilder());
_dfa = (DfaMatcher)SetupMatcher(CreateDfaMatcherBuilder());
}
private void SetupEndpoints()
{
Endpoints = new MatcherEndpoint[10];
Endpoints[0] = CreateEndpoint("/another-really-cool-entry");
Endpoints[1] = CreateEndpoint("/Some-Entry");
Endpoints[2] = CreateEndpoint("/a/path/with/more/segments");
Endpoints[3] = CreateEndpoint("/random/name");
Endpoints[4] = CreateEndpoint("/random/name2");
Endpoints[5] = CreateEndpoint("/random/name3");
Endpoints[6] = CreateEndpoint("/random/name4");
Endpoints[7] = CreateEndpoint("/plaintext1");
Endpoints[8] = CreateEndpoint("/plaintext2");
Endpoints[9] = CreateEndpoint("/plaintext");
}
public async Task SelectAsync_NoCandidates_DoesNothing()
{
// Arrange
var endpoints = new MatcherEndpoint[] { };
var scores = new int[] { };
var candidateSet = CreateCandidateSet(endpoints, scores);
var(httpContext, feature) = CreateContext();
var selector = CreateSelector();
// Act
await selector.SelectAsync(httpContext, feature, candidateSet);
// Assert
Assert.Null(feature.Endpoint);
}
public override Task SelectAsync(
HttpContext httpContext,
IEndpointFeature feature,
CandidateSet candidateSet)
{
for (var i = 0; i < _selectorPolicies.Length; i++)
{
_selectorPolicies[i].Apply(httpContext, candidateSet);
}
MatcherEndpoint endpoint = null;
RouteValueDictionary values = null;
int?foundScore = null;
for (var i = 0; i < candidateSet.Count; i++)
{
ref var state = ref candidateSet[i];
var isValid = state.IsValidCandidate;
if (isValid && foundScore == null)
{
// This is the first match we've seen - speculatively assign it.
endpoint = state.Endpoint;
values = state.Values;
foundScore = state.Score;
}
else if (isValid && foundScore < state.Score)
{
// This candidate is lower priority than the one we've seen
// so far, we can stop.
//
// Don't worry about the 'null < state.Score' case, it returns false.
break;
}
else if (isValid && foundScore == state.Score)
{
// This is the second match we've found of the same score, so there
// must be an ambiguity.
//
// Don't worry about the 'null == state.Score' case, it returns false.
ReportAmbiguity(candidateSet);
// Unreachable, ReportAmbiguity always throws.
throw new NotSupportedException();
}
}
public void Setup()
{
Endpoints = new MatcherEndpoint[1];
Endpoints[0] = CreateEndpoint("/plaintext");
Requests = new HttpContext[1];
Requests[0] = new DefaultHttpContext();
Requests[0].RequestServices = CreateServices();
Requests[0].Request.Path = "/plaintext";
_baseline = (BarebonesMatcher)SetupMatcher(new BarebonesMatcherBuilder());
_dfa = SetupMatcher(CreateDfaMatcherBuilder());
_route = SetupMatcher(new RouteMatcherBuilder());
_tree = SetupMatcher(new TreeRouterMatcherBuilder());
_feature = new EndpointFeature();
}
public async Task SelectAsync_NoValidCandidates_DoesNothing()
{
// Arrange
var endpoints = new MatcherEndpoint[] { CreateEndpoint("/test"), };
var scores = new int[] { 0, };
var candidateSet = CreateCandidateSet(endpoints, scores);
candidateSet[0].Values = new RouteValueDictionary();
candidateSet[0].IsValidCandidate = false;
var(httpContext, feature) = CreateContext();
var selector = CreateSelector();
// Act
await selector.SelectAsync(httpContext, feature, candidateSet);
// Assert
Assert.Null(feature.Endpoint);
Assert.Null(feature.Values);
}
public async Task SelectAsync_SingleCandidate_ChoosesCandidate()
{
// Arrange
var endpoints = new MatcherEndpoint[] { CreateEndpoint("/test"), };
var scores = new int[] { 0, };
var candidateSet = CreateCandidateSet(endpoints, scores);
candidateSet[0].Values = new RouteValueDictionary();
candidateSet[0].IsValidCandidate = true;
var(httpContext, feature) = CreateContext();
var selector = CreateSelector();
// Act
await selector.SelectAsync(httpContext, feature, candidateSet);
// Assert
Assert.Same(endpoints[0], feature.Endpoint);
Assert.Same(endpoints[0].Invoker, feature.Invoker);
Assert.NotNull(feature.Values);
}
public void Matcher_Reinitializes_WhenDataSourceChanges()
{
// Arrange
var dataSource = new DynamicEndpointDataSource();
var matcher = new DataSourceDependentMatcher(dataSource, TestMatcherBuilder.Create);
var endpoint = new MatcherEndpoint(
MatcherEndpoint.EmptyInvoker,
RoutePatternFactory.Parse("a/b/c"),
0,
EndpointMetadataCollection.Empty,
"test");
// Act
dataSource.AddEndpoint(endpoint);
// Assert
var inner = Assert.IsType <TestMatcher>(matcher.CurrentMatcher);
Assert.Collection(
inner.Endpoints,
e => Assert.Same(endpoint, e));
}
public override void AddEndpoint(MatcherEndpoint endpoint)
{
_endpoints.Add(endpoint);
}
public TrivialMatcher(MatcherEndpoint endpoint)
{
_endpoint = endpoint;
_candidates = new Candidate[] { new Candidate(endpoint), };
}
