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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 Microsoft.AspNetCore.Routing.Template;
using Microsoft.AspNetCore.Testing;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging.Abstractions;
using Microsoft.Extensions.ObjectPool;
using Microsoft.Extensions.Options;
using Moq;
using Xunit;
namespace Microsoft.AspNetCore.Routing.Tree;
public class TreeRouteBuilderTest
{
[Fact]
public void TreeRouter_BuildThrows_RoutesWithTheSameNameAndDifferentTemplates()
{
// Arrange
var builder = CreateBuilder();
var message = "Two or more routes named 'Get_Products' have different templates.";
builder.MapOutbound(
Mock.Of<IRouter>(),
TemplateParser.Parse("api/Products"),
new RouteValueDictionary(),
"Get_Products",
order: 0);
builder.MapOutbound(
Mock.Of<IRouter>(),
TemplateParser.Parse("Products/Index"),
new RouteValueDictionary(),
"Get_Products",
order: 0);
// Act & Assert
ExceptionAssert.ThrowsArgument(() =>
{
builder.Build();
}, "linkGenerationEntries", message);
}
[Fact]
public void TreeRouter_BuildDoesNotThrow_RoutesWithTheSameNameAndSameTemplates()
{
// Arrange
var builder = CreateBuilder();
builder.MapOutbound(
Mock.Of<IRouter>(),
TemplateParser.Parse("api/Products"),
new RouteValueDictionary(),
"Get_Products",
order: 0);
builder.MapOutbound(
Mock.Of<IRouter>(),
TemplateParser.Parse("api/products"),
new RouteValueDictionary(),
"Get_Products",
order: 0);
// Act & Assert (does not throw)
builder.Build();
}
[Fact]
public void TreeRouter_BuildDoesNotAddIntermediateMatchingNodes_ForRoutesWithIntermediateParametersWithDefaultValues()
{
// Arrange
var builder = CreateBuilder();
builder.MapInbound(
Mock.Of<IRouter>(),
TemplateParser.Parse("a/{b=3}/c"),
"Intermediate",
order: 0);
// Act
var tree = builder.Build();
// Assert
Assert.NotNull(tree);
Assert.NotNull(tree.MatchingTrees);
var matchingTree = Assert.Single(tree.MatchingTrees);
var firstSegment = Assert.Single(matchingTree.Root.Literals);
Assert.Equal("a", firstSegment.Key);
Assert.NotNull(firstSegment.Value.Parameters);
var secondSegment = firstSegment.Value.Parameters;
Assert.Empty(secondSegment.Matches);
var thirdSegment = Assert.Single(secondSegment.Literals);
Assert.Equal("c", thirdSegment.Key);
Assert.Single(thirdSegment.Value.Matches);
}
[Fact]
public void TreeRouter_BuildDoesNotAddIntermediateMatchingNodes_ForRoutesWithMultipleIntermediateParametersWithDefaultOrOptionalValues()
{
// Arrange
var builder = CreateBuilder();
builder.MapInbound(
Mock.Of<IRouter>(),
TemplateParser.Parse("a/{b=3}/c/{d?}/e/{*f}"),
"Intermediate",
order: 0);
// Act
var tree = builder.Build();
// Assert
Assert.NotNull(tree);
Assert.NotNull(tree.MatchingTrees);
var matchingTree = Assert.Single(tree.MatchingTrees);
var firstSegment = Assert.Single(matchingTree.Root.Literals);
Assert.Equal("a", firstSegment.Key);
Assert.NotNull(firstSegment.Value.Parameters);
var secondSegment = firstSegment.Value.Parameters;
Assert.Empty(secondSegment.Matches);
var thirdSegment = Assert.Single(secondSegment.Literals);
Assert.Equal("c", thirdSegment.Key);
Assert.Empty(thirdSegment.Value.Matches);
var fourthSegment = thirdSegment.Value.Parameters;
Assert.NotNull(fourthSegment);
Assert.Empty(fourthSegment.Matches);
var fifthSegment = Assert.Single(fourthSegment.Literals);
Assert.Equal("e", fifthSegment.Key);
Assert.Single(fifthSegment.Value.Matches);
var sixthSegment = fifthSegment.Value.CatchAlls;
Assert.NotNull(sixthSegment);
Assert.Single(sixthSegment.Matches);
}
[Fact]
public void TreeRouter_BuildDoesNotAddIntermediateMatchingNodes_ForRoutesWithIntermediateParametersWithOptionalValues()
{
// Arrange
var builder = CreateBuilder();
builder.MapInbound(
Mock.Of<IRouter>(),
TemplateParser.Parse("a/{b?}/c"),
"Intermediate",
order: 0);
// Act
var tree = builder.Build();
// Assert
Assert.NotNull(tree);
Assert.NotNull(tree.MatchingTrees);
var matchingTree = Assert.Single(tree.MatchingTrees);
var firstSegment = Assert.Single(matchingTree.Root.Literals);
Assert.Equal("a", firstSegment.Key);
Assert.NotNull(firstSegment.Value.Parameters);
var secondSegment = firstSegment.Value.Parameters;
Assert.Empty(secondSegment.Matches);
var thirdSegment = Assert.Single(secondSegment.Literals);
Assert.Equal("c", thirdSegment.Key);
Assert.Single(thirdSegment.Value.Matches);
}
[Fact]
public void TreeRouter_BuildDoesNotAddIntermediateMatchingNodes_ForRoutesWithIntermediateParametersWithConstrainedDefaultValues()
{
// Arrange
var builder = CreateBuilder();
builder.MapInbound(
Mock.Of<IRouter>(),
TemplateParser.Parse("a/{b:int=3}/c"),
"Intermediate",
order: 0);
// Act
var tree = builder.Build();
// Assert
Assert.NotNull(tree);
Assert.NotNull(tree.MatchingTrees);
var matchingTree = Assert.Single(tree.MatchingTrees);
var firstSegment = Assert.Single(matchingTree.Root.Literals);
Assert.Equal("a", firstSegment.Key);
Assert.NotNull(firstSegment.Value.ConstrainedParameters);
var secondSegment = firstSegment.Value.ConstrainedParameters;
Assert.Empty(secondSegment.Matches);
var thirdSegment = Assert.Single(secondSegment.Literals);
Assert.Equal("c", thirdSegment.Key);
Assert.Single(thirdSegment.Value.Matches);
}
[Fact]
public void TreeRouter_BuildDoesNotAddIntermediateMatchingNodes_ForRoutesWithIntermediateParametersWithConstrainedOptionalValues()
{
// Arrange
var builder = CreateBuilder();
builder.MapInbound(
Mock.Of<IRouter>(),
TemplateParser.Parse("a/{b:int?}/c"),
"Intermediate",
order: 0);
// Act
var tree = builder.Build();
// Assert
Assert.NotNull(tree);
Assert.NotNull(tree.MatchingTrees);
var matchingTree = Assert.Single(tree.MatchingTrees);
var firstSegment = Assert.Single(matchingTree.Root.Literals);
Assert.Equal("a", firstSegment.Key);
Assert.NotNull(firstSegment.Value.ConstrainedParameters);
var secondSegment = firstSegment.Value.ConstrainedParameters;
Assert.Empty(secondSegment.Matches);
var thirdSegment = Assert.Single(secondSegment.Literals);
Assert.Equal("c", thirdSegment.Key);
Assert.Single(thirdSegment.Value.Matches);
}
private static TreeRouteBuilder CreateBuilder()
{
var objectPoolProvider = new DefaultObjectPoolProvider();
var objectPolicy = new UriBuilderContextPooledObjectPolicy();
var objectPool = objectPoolProvider.Create(objectPolicy);
var constraintResolver = GetInlineConstraintResolver();
var builder = new TreeRouteBuilder(
NullLoggerFactory.Instance,
objectPool,
constraintResolver);
return builder;
}
private static IInlineConstraintResolver GetInlineConstraintResolver()
{
var services = new ServiceCollection().AddOptions();
var serviceProvider = services.BuildServiceProvider();
var accessor = serviceProvider.GetRequiredService<IOptions<RouteOptions>>();
return new DefaultInlineConstraintResolver(accessor, serviceProvider);
}
}
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