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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Http.Features;
using Microsoft.AspNetCore.Routing.Matching;
using Microsoft.AspNetCore.Routing.TestObjects;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Logging.Testing;
using Xunit;
namespace Microsoft.AspNetCore.Routing;
// Tests LinkParser functionality using ParsePathByAddress - see tests for the extension
// methods for more E2E tests.
//
// Does not cover template processing in detail, those scenarios are validated by other tests.
public class DefaultLinkParserTest : LinkParserTestBase
{
[Fact]
public void ParsePathByAddresss_NoMatchingEndpoint_ReturnsNull()
{
// Arrange
var endpoint = EndpointFactory.CreateRouteEndpoint("{controller}/{action}/{id?}", displayName: "Test1", metadata: new object[] { new IntMetadata(1), });
var sink = new TestSink();
var loggerFactory = new TestLoggerFactory(sink, enabled: true);
var parser = CreateLinkParser(services => { services.AddSingleton<ILoggerFactory>(loggerFactory); }, endpoint);
// Act
var values = parser.ParsePathByAddress(0, "/Home/Index/17");
// Assert
Assert.Null(values);
Assert.Collection(
sink.Writes,
w => Assert.Equal("No endpoints found for address 0", w.Message));
}
[Fact]
public void ParsePathByAddresss_HasMatches_ReturnsNullWhenParsingFails()
{
// Arrange
var endpoint1 = EndpointFactory.CreateRouteEndpoint("{controller}/{action}/{id}", displayName: "Test1", metadata: new object[] { new IntMetadata(1), });
var endpoint2 = EndpointFactory.CreateRouteEndpoint("{controller}/{action}/{id2}", displayName: "Test2", metadata: new object[] { new IntMetadata(0), });
var sink = new TestSink();
var loggerFactory = new TestLoggerFactory(sink, enabled: true);
var parser = CreateLinkParser(services => { services.AddSingleton<ILoggerFactory>(loggerFactory); }, endpoint1, endpoint2);
// Act
var values = parser.ParsePathByAddress(0, "/");
// Assert
Assert.Null(values);
Assert.Collection(
sink.Writes,
w => Assert.Equal("Found the endpoints Test2 for address 0", w.Message),
w => Assert.Equal("Path parsing failed for endpoints Test2 and URI path /", w.Message));
}
[Fact]
public void ParsePathByAddresss_HasMatches_ReturnsFirstSuccessfulParse()
{
// Arrange
var endpoint0 = EndpointFactory.CreateRouteEndpoint("{controller}/{action}", displayName: "Test1", metadata: new object[] { new IntMetadata(0), });
var endpoint1 = EndpointFactory.CreateRouteEndpoint("{controller}/{action}/{id}", displayName: "Test2", metadata: new object[] { new IntMetadata(0), });
var endpoint2 = EndpointFactory.CreateRouteEndpoint("{controller}/{action}/{id2}", displayName: "Test3", metadata: new object[] { new IntMetadata(0), });
var sink = new TestSink();
var loggerFactory = new TestLoggerFactory(sink, enabled: true);
var parser = CreateLinkParser(services => { services.AddSingleton<ILoggerFactory>(loggerFactory); }, endpoint0, endpoint1, endpoint2);
// Act
var values = parser.ParsePathByAddress(0, "/Home/Index/17");
// Assert
MatcherAssert.AssertRouteValuesEqual(new { controller = "Home", action = "Index", id = "17" }, values);
Assert.Collection(
sink.Writes,
w => Assert.Equal("Found the endpoints Test1, Test2, Test3 for address 0", w.Message),
w => Assert.Equal("Path parsing succeeded for endpoint Test2 and URI path /Home/Index/17", w.Message));
}
[Fact]
public void ParsePathByAddresss_HasMatches_IncludesDefaults()
{
// Arrange
var endpoint = EndpointFactory.CreateRouteEndpoint("{controller=Home}/{action=Index}/{id?}", metadata: new object[] { new IntMetadata(0), });
var parser = CreateLinkParser(endpoint);
// Act
var values = parser.ParsePathByAddress(0, "/");
// Assert
MatcherAssert.AssertRouteValuesEqual(new { controller = "Home", action = "Index", }, values);
}
[Fact]
public void ParsePathByAddresss_HasMatches_RunsConstraints()
{
// Arrange
var endpoint0 = EndpointFactory.CreateRouteEndpoint("{controller}/{action}/{id:int}", metadata: new object[] { new IntMetadata(0), });
var endpoint1 = EndpointFactory.CreateRouteEndpoint("{controller}/{action}/{id2:alpha}", metadata: new object[] { new IntMetadata(0), });
var parser = CreateLinkParser(endpoint0, endpoint1);
// Act
var values = parser.ParsePathByAddress(0, "/Home/Index/abc");
// Assert
MatcherAssert.AssertRouteValuesEqual(new { controller = "Home", action = "Index", id2 = "abc" }, values);
}
[Fact]
public void GetRoutePatternMatcher_CanCache()
{
// Arrange
var endpoint1 = EndpointFactory.CreateRouteEndpoint("{controller}/{action}/{id}", metadata: new object[] { new IntMetadata(1), });
var dataSource = new DynamicEndpointDataSource(endpoint1);
var parser = CreateLinkParser(dataSources: new[] { dataSource });
var expected = parser.GetMatcherState(endpoint1);
// Act
var actual = parser.GetMatcherState(endpoint1);
// Assert
Assert.Same(expected.Matcher, actual.Matcher);
Assert.Same(expected.Constraints, actual.Constraints);
}
[Fact]
public void GetRoutePatternMatcherr_CanClearCache()
{
// Arrange
var endpoint1 = EndpointFactory.CreateRouteEndpoint("{controller}/{action}/{id}", metadata: new object[] { new IntMetadata(1), });
var dataSource = new DynamicEndpointDataSource(endpoint1);
var parser = CreateLinkParser(dataSources: new[] { dataSource });
var original = parser.GetMatcherState(endpoint1);
var endpoint2 = EndpointFactory.CreateRouteEndpoint("{controller}/{action}/{id}", metadata: new object[] { new IntMetadata(1), });
dataSource.AddEndpoint(endpoint2);
// Act
var actual = parser.GetMatcherState(endpoint1);
// Assert
Assert.NotSame(original.Matcher, actual.Matcher);
Assert.NotSame(original.Constraints, actual.Constraints);
}
protected override void AddAdditionalServices(IServiceCollection services)
{
services.AddSingleton<IEndpointAddressScheme<int>, IntAddressScheme>();
}
private class IntAddressScheme : IEndpointAddressScheme<int>
{
private readonly EndpointDataSource _dataSource;
public IntAddressScheme(EndpointDataSource dataSource)
{
_dataSource = dataSource;
}
public IEnumerable<Endpoint> FindEndpoints(int address)
{
return _dataSource.Endpoints.Where(e => e.Metadata.GetMetadata<IntMetadata>().Value == address);
}
}
private class IntMetadata
{
public IntMetadata(int value)
{
Value = value;
}
public int Value { get; }
}
}
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