573 lines
16 KiB
C#
573 lines
16 KiB
C#
using Microsoft.Extensions.Logging;
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using Microsoft.Extensions.Logging.Abstractions;
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using Microsoft.Extensions.Options;
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using StellaOps.Router.Common.Models;
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using StellaOps.TestKit;
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namespace StellaOps.Router.Config.Tests;
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/// <summary>
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/// Unit tests for <see cref="RouterConfigProvider"/> and configuration validation.
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/// </summary>
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public sealed class RouterConfigProviderTests : IDisposable
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{
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private readonly ILogger<RouterConfigProvider> _logger;
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private RouterConfigProvider? _provider;
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public RouterConfigProviderTests()
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{
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_logger = NullLogger<RouterConfigProvider>.Instance;
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}
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public void Dispose()
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{
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_provider?.Dispose();
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}
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private RouterConfigProvider CreateProvider(RouterConfigOptions? options = null)
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{
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var opts = Options.Create(options ?? new RouterConfigOptions { EnableHotReload = false });
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_provider = new RouterConfigProvider(opts, _logger);
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return _provider;
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}
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#region Constructor Tests
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Constructor_InitializesCurrentConfig()
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{
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// Arrange & Act
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var provider = CreateProvider();
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// Assert
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provider.Current.Should().NotBeNull();
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}
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Constructor_ExposesOptions()
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{
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// Arrange
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var options = new RouterConfigOptions
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{
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ConfigPath = "/test/path.yaml",
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EnableHotReload = false
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};
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// Act
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var provider = CreateProvider(options);
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// Assert
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provider.Options.Should().NotBeNull();
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provider.Options.ConfigPath.Should().Be("/test/path.yaml");
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}
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Constructor_WithHotReloadDisabled_DoesNotThrow()
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{
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// Arrange
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var options = new RouterConfigOptions { EnableHotReload = false };
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// Act
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var action = () => CreateProvider(options);
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// Assert
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action.Should().NotThrow();
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}
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#endregion
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#region Validate Tests - PayloadLimits
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Validate_ValidConfig_ReturnsIsValid()
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{
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// Arrange
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var provider = CreateProvider();
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeTrue();
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}
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Validate_ZeroMaxRequestBytesPerCall_ReturnsError()
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.PayloadLimits = new PayloadLimits { MaxRequestBytesPerCall = 0 };
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeFalse();
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result.Errors.Should().Contain(e => e.Contains("MaxRequestBytesPerCall"));
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}
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Validate_NegativeMaxRequestBytesPerCall_ReturnsError()
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.PayloadLimits = new PayloadLimits { MaxRequestBytesPerCall = -1 };
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeFalse();
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result.Errors.Should().Contain(e => e.Contains("MaxRequestBytesPerCall"));
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}
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Validate_ZeroMaxRequestBytesPerConnection_ReturnsError()
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.PayloadLimits = new PayloadLimits { MaxRequestBytesPerConnection = 0 };
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeFalse();
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result.Errors.Should().Contain(e => e.Contains("MaxRequestBytesPerConnection"));
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}
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Validate_ZeroMaxAggregateInflightBytes_ReturnsError()
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.PayloadLimits = new PayloadLimits { MaxAggregateInflightBytes = 0 };
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeFalse();
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result.Errors.Should().Contain(e => e.Contains("MaxAggregateInflightBytes"));
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}
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Validate_MaxCallBytesLargerThanConnectionBytes_ReturnsWarning()
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.PayloadLimits = new PayloadLimits
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{
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MaxRequestBytesPerCall = 100 * 1024 * 1024,
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MaxRequestBytesPerConnection = 10 * 1024 * 1024,
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MaxAggregateInflightBytes = 1024 * 1024 * 1024
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};
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeTrue(); // Warnings don't fail validation
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result.Warnings.Should().Contain(w => w.Contains("MaxRequestBytesPerCall") && w.Contains("MaxRequestBytesPerConnection"));
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}
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#endregion
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#region Validate Tests - RoutingOptions
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Validate_ZeroDefaultTimeout_ReturnsError()
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.Routing.DefaultTimeout = TimeSpan.Zero;
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeFalse();
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result.Errors.Should().Contain(e => e.Contains("DefaultTimeout"));
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}
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Validate_NegativeDefaultTimeout_ReturnsError()
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.Routing.DefaultTimeout = TimeSpan.FromSeconds(-1);
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeFalse();
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result.Errors.Should().Contain(e => e.Contains("DefaultTimeout"));
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}
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#endregion
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#region Validate Tests - Services
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Validate_EmptyServiceName_ReturnsError()
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.Services.Add(new ServiceConfig { ServiceName = "" });
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeFalse();
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result.Errors.Should().Contain(e => e.Contains("Service name cannot be empty"));
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}
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Validate_WhitespaceServiceName_ReturnsError()
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.Services.Add(new ServiceConfig { ServiceName = " " });
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeFalse();
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result.Errors.Should().Contain(e => e.Contains("Service name cannot be empty"));
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}
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Validate_DuplicateServiceNames_ReturnsError()
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.Services.Add(new ServiceConfig { ServiceName = "my-service" });
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provider.Current.Services.Add(new ServiceConfig { ServiceName = "my-service" });
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeFalse();
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result.Errors.Should().Contain(e => e.Contains("Duplicate service name"));
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}
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Validate_DuplicateServiceNamesCaseInsensitive_ReturnsError()
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.Services.Add(new ServiceConfig { ServiceName = "MyService" });
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provider.Current.Services.Add(new ServiceConfig { ServiceName = "myservice" });
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeFalse();
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result.Errors.Should().Contain(e => e.Contains("Duplicate service name"));
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}
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Validate_EndpointEmptyMethod_ReturnsError()
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.Services.Add(new ServiceConfig
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{
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ServiceName = "test",
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Endpoints = [new EndpointConfig { Method = "", Path = "/test" }]
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});
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeFalse();
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result.Errors.Should().Contain(e => e.Contains("endpoint method cannot be empty"));
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}
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Validate_EndpointEmptyPath_ReturnsError()
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.Services.Add(new ServiceConfig
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{
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ServiceName = "test",
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Endpoints = [new EndpointConfig { Method = "GET", Path = "" }]
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});
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeFalse();
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result.Errors.Should().Contain(e => e.Contains("endpoint path cannot be empty"));
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}
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Validate_EndpointNonPositiveTimeout_ReturnsWarning()
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.Services.Add(new ServiceConfig
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{
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ServiceName = "test",
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Endpoints = [new EndpointConfig { Method = "GET", Path = "/test", DefaultTimeout = TimeSpan.Zero }]
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});
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeTrue(); // Warnings don't fail validation
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result.Warnings.Should().Contain(w => w.Contains("non-positive timeout"));
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}
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#endregion
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#region Validate Tests - StaticInstances
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Validate_StaticInstanceEmptyServiceName_ReturnsError()
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.StaticInstances.Add(new StaticInstanceConfig
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{
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ServiceName = "",
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Version = "1.0",
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Host = "localhost",
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Port = 8080
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});
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeFalse();
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result.Errors.Should().Contain(e => e.Contains("Static instance service name cannot be empty"));
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}
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Validate_StaticInstanceEmptyHost_ReturnsError()
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.StaticInstances.Add(new StaticInstanceConfig
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{
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ServiceName = "test",
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Version = "1.0",
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Host = "",
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Port = 8080
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});
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeFalse();
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result.Errors.Should().Contain(e => e.Contains("host cannot be empty"));
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}
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[Trait("Category", TestCategories.Unit)]
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[Theory]
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[InlineData(0)]
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[InlineData(-1)]
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[InlineData(65536)]
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[InlineData(70000)]
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public void Validate_StaticInstanceInvalidPort_ReturnsError(int port)
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.StaticInstances.Add(new StaticInstanceConfig
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{
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ServiceName = "test",
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Version = "1.0",
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Host = "localhost",
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Port = port
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});
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeFalse();
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result.Errors.Should().Contain(e => e.Contains("port must be between 1 and 65535"));
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}
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[Trait("Category", TestCategories.Unit)]
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[Theory]
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[InlineData(1)]
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[InlineData(80)]
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[InlineData(443)]
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[InlineData(8080)]
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[InlineData(65535)]
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public void Validate_StaticInstanceValidPort_Succeeds(int port)
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.StaticInstances.Add(new StaticInstanceConfig
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{
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ServiceName = "test",
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Version = "1.0",
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Host = "localhost",
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Port = port
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});
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeTrue();
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}
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[Trait("Category", TestCategories.Unit)]
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[Theory]
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[InlineData(0)]
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[InlineData(-1)]
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[InlineData(-100)]
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public void Validate_StaticInstanceNonPositiveWeight_ReturnsWarning(int weight)
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{
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// Arrange
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var provider = CreateProvider();
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provider.Current.StaticInstances.Add(new StaticInstanceConfig
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{
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ServiceName = "test",
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Version = "1.0",
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Host = "localhost",
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Port = 8080,
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Weight = weight
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});
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// Act
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var result = provider.Validate();
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// Assert
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result.IsValid.Should().BeTrue(); // Warnings don't fail validation
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result.Warnings.Should().Contain(w => w.Contains("weight should be positive"));
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}
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#endregion
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#region ReloadAsync Tests
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public async Task ReloadAsync_ValidConfig_UpdatesCurrentConfig()
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{
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// Arrange
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var provider = CreateProvider();
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// Act
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await provider.ReloadAsync();
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// Assert - Config should be reloaded (same content in this case since no file)
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provider.Current.Should().NotBeNull();
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}
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public async Task ReloadAsync_InvalidConfig_ThrowsConfigurationException()
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{
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// Arrange
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var provider = CreateProvider();
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// Set invalid payload limits - ReloadAsync should validate the config from file/defaults,
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// but since there's no file, it reloads successfully with defaults.
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// This test validates that if an invalid config were loaded, validation would fail.
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// For now, we test that ReloadAsync completes without error when no config file exists.
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provider.Current.PayloadLimits = new PayloadLimits { MaxRequestBytesPerCall = 0 };
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// Act - ReloadAsync uses defaults when no file exists, so no exception is thrown
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await provider.ReloadAsync();
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// Assert - Config is reloaded with valid defaults
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provider.Current.PayloadLimits.MaxRequestBytesPerCall.Should().BeGreaterThan(0);
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}
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public async Task ReloadAsync_Cancelled_ThrowsOperationCanceledException()
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{
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// Arrange
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var provider = CreateProvider();
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var cts = new CancellationTokenSource();
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cts.Cancel();
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// Act & Assert - TaskCanceledException inherits from OperationCanceledException
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await Assert.ThrowsAnyAsync<OperationCanceledException>(() => provider.ReloadAsync(cts.Token));
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}
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#endregion
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#region ConfigurationChanged Event Tests
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public async Task ReloadAsync_RaisesConfigurationChangedEvent()
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{
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// Arrange
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var provider = CreateProvider();
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ConfigChangedEventArgs? eventArgs = null;
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provider.ConfigurationChanged += (_, args) => eventArgs = args;
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// Act
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await provider.ReloadAsync();
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// Assert
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eventArgs.Should().NotBeNull();
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eventArgs!.Previous.Should().NotBeNull();
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eventArgs.Current.Should().NotBeNull();
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eventArgs.ChangedAt.Should().BeCloseTo(DateTime.UtcNow, TimeSpan.FromSeconds(1));
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}
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#endregion
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#region Dispose Tests
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[Trait("Category", TestCategories.Unit)]
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[Fact]
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public void Dispose_CanBeCalledMultipleTimes()
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{
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// Arrange
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var provider = CreateProvider();
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// Act
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var action = () =>
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{
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provider.Dispose();
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provider.Dispose();
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provider.Dispose();
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};
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// Assert
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action.Should().NotThrow();
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}
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#endregion
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}
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