refacto + test fixes

src/Yavsc.Blogs.Tests/Fixtures/BlogHelpers.cs

@@ -0,0 +1,11 @@
+namespace Yavsc.Blogs.Tests.Fixtures;
+
+
+public static class BlogHelpers
+{
+    public static string BlogUrl(this IBackendFixture fixture)
+        => $"{fixture.Addresses.First(a => a.StartsWith("https://"))}/{Constants.APIPrefix}/{Constants.BlogSpotPath}";
+
+    public static string BlogAclUrl(this IBackendFixture fixture)
+        => $"{fixture.Addresses.First(a => a.StartsWith("https://"))}/{Constants.APIPrefix}/{Constants.BlogAclPath}";
+}

src/Yavsc.Blogs.Tests/Fixtures/IBackendFixture.cs

@@ -0,0 +1,15 @@
+
+using Yavsc.Blogs.Tests;
+
+public interface IBackendFixture 
+{
+    /// <summary>
+    /// The addresses the fixture bound to.
+    /// </summary>
+    IReadOnlyList<string> Addresses { get; }
+
+    /// <summary>
+    /// The service provider for the fixture host.
+    /// </summary>
+    IServiceProvider Services { get; }
+}