Add unit tests for Router configuration and transport layers

- Implemented tests for RouterConfig, RoutingOptions, StaticInstanceConfig, and RouterConfigOptions to ensure default values are set correctly.
- Added tests for RouterConfigProvider to validate configurations and ensure defaults are returned when no file is specified.
- Created tests for ConfigValidationResult to check success and error scenarios.
- Developed tests for ServiceCollectionExtensions to verify service registration for RouterConfig.
- Introduced UdpTransportTests to validate serialization, connection, request-response, and error handling in UDP transport.
- Added scripts for signing authority gaps and hashing DevPortal SDK snippets.

tests/StellaOps.Microservice.Tests/MicroserviceYamlConfigTests.cs

@@ -0,0 +1,144 @@
+using FluentAssertions;
+using StellaOps.Microservice;
+using Xunit;
+
+namespace StellaOps.Microservice.Tests;
+
+/// <summary>
+/// Tests for MicroserviceYamlConfig and EndpointOverrideConfig classes.
+/// </summary>
+public class MicroserviceYamlConfigTests
+{
+    [Fact]
+    public void MicroserviceYamlConfig_DefaultsToEmptyEndpoints()
+    {
+        var config = new MicroserviceYamlConfig();
+
+        config.Endpoints.Should().NotBeNull();
+        config.Endpoints.Should().BeEmpty();
+    }
+
+    [Fact]
+    public void EndpointOverrideConfig_DefaultsToEmptyStrings()
+    {
+        var config = new EndpointOverrideConfig();
+
+        config.Method.Should().Be(string.Empty);
+        config.Path.Should().Be(string.Empty);
+        config.DefaultTimeout.Should().BeNull();
+        config.SupportsStreaming.Should().BeNull();
+        config.RequiringClaims.Should().BeNull();
+    }
+
+    [Theory]
+    [InlineData("30s", 30)]
+    [InlineData("60s", 60)]
+    [InlineData("1s", 1)]
+    [InlineData("120S", 120)] // Case insensitive
+    public void GetDefaultTimeoutAsTimeSpan_ParsesSeconds(string input, int expectedSeconds)
+    {
+        var config = new EndpointOverrideConfig { DefaultTimeout = input };
+
+        var result = config.GetDefaultTimeoutAsTimeSpan();
+
+        result.Should().Be(TimeSpan.FromSeconds(expectedSeconds));
+    }
+
+    [Theory]
+    [InlineData("5m", 5)]
+    [InlineData("10m", 10)]
+    [InlineData("1m", 1)]
+    [InlineData("30M", 30)] // Case insensitive
+    public void GetDefaultTimeoutAsTimeSpan_ParsesMinutes(string input, int expectedMinutes)
+    {
+        var config = new EndpointOverrideConfig { DefaultTimeout = input };
+
+        var result = config.GetDefaultTimeoutAsTimeSpan();
+
+        result.Should().Be(TimeSpan.FromMinutes(expectedMinutes));
+    }
+
+    [Theory]
+    [InlineData("1h", 1)]
+    [InlineData("2h", 2)]
+    [InlineData("24h", 24)]
+    [InlineData("1H", 1)] // Case insensitive
+    public void GetDefaultTimeoutAsTimeSpan_ParsesHours(string input, int expectedHours)
+    {
+        var config = new EndpointOverrideConfig { DefaultTimeout = input };
+
+        var result = config.GetDefaultTimeoutAsTimeSpan();
+
+        result.Should().Be(TimeSpan.FromHours(expectedHours));
+    }
+
+    [Theory]
+    [InlineData("00:00:30", 30)]
+    [InlineData("00:05:00", 300)]
+    [InlineData("01:00:00", 3600)]
+    [InlineData("00:01:30", 90)]
+    public void GetDefaultTimeoutAsTimeSpan_ParsesTimeSpanFormat(string input, int expectedSeconds)
+    {
+        var config = new EndpointOverrideConfig { DefaultTimeout = input };
+
+        var result = config.GetDefaultTimeoutAsTimeSpan();
+
+        result.Should().Be(TimeSpan.FromSeconds(expectedSeconds));
+    }
+
+    [Theory]
+    [InlineData(null)]
+    [InlineData("")]
+    [InlineData("  ")]
+    public void GetDefaultTimeoutAsTimeSpan_ReturnsNullForEmptyValues(string? input)
+    {
+        var config = new EndpointOverrideConfig { DefaultTimeout = input };
+
+        var result = config.GetDefaultTimeoutAsTimeSpan();
+
+        result.Should().BeNull();
+    }
+
+    [Theory]
+    [InlineData("invalid")]
+    [InlineData("abc")]
+    [InlineData("30x")]
+    public void GetDefaultTimeoutAsTimeSpan_ReturnsNullForInvalidFormats(string input)
+    {
+        var config = new EndpointOverrideConfig { DefaultTimeout = input };
+
+        var result = config.GetDefaultTimeoutAsTimeSpan();
+
+        result.Should().BeNull();
+    }
+
+    [Fact]
+    public void ClaimRequirementConfig_ToClaimRequirement_ConvertsCorrectly()
+    {
+        var config = new ClaimRequirementConfig
+        {
+            Type = "role",
+            Value = "admin"
+        };
+
+        var result = config.ToClaimRequirement();
+
+        result.Type.Should().Be("role");
+        result.Value.Should().Be("admin");
+    }
+
+    [Fact]
+    public void ClaimRequirementConfig_ToClaimRequirement_HandlesNullValue()
+    {
+        var config = new ClaimRequirementConfig
+        {
+            Type = "authenticated",
+            Value = null
+        };
+
+        var result = config.ToClaimRequirement();
+
+        result.Type.Should().Be("authenticated");
+        result.Value.Should().BeNull();
+    }
+}