Additional convention test were added.

Octokit.Tests.Conventions/Exception/MissingConstructorTestClassException.cs

@@ -0,0 +1,16 @@
+using System;
+
+namespace Octokit.Tests.Conventions
+{
+    public class MissingConstructorTestClassException : Exception
+    {
+        public MissingConstructorTestClassException(Type modelType)
+            : base(CreateMessage(modelType))
+        { }
+
+        static string CreateMessage(Type ctorTest)
+        {
+            return string.Format("Constructor test method is missing {0}.", ctorTest.FullName);
+        }
+    }
+}

Octokit.Tests.Conventions/Octokit.Tests.Conventions.csproj

@@ -64,6 +64,7 @@
   <ItemGroup>
     <Compile Include="Exception\InvalidDebuggerDisplayAttributeValueException.cs" />
     <Compile Include="Exception\InvalidDebuggerDisplayReturnType.cs" />
+    <Compile Include="Exception\MissingConstructorTestClassException.cs" />
     <Compile Include="Exception\MissingDebuggerDisplayAttributeException.cs" />
     <Compile Include="Exception\MissingDebuggerDisplayPropertyException.cs" />
     <Compile Include="Exception\MutableModelPropertiesException.cs" />
@@ -81,6 +82,7 @@
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="StringExtensions.cs" />
     <Compile Include="SyncObservableClients.cs" />
+    <Compile Include="TestConstructorTests.cs" />
     <Compile Include="TypeExtensions.cs" />
   </ItemGroup>
   <ItemGroup>

Octokit.Tests.Conventions/TestConstructorTests.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Octokit.Tests.Clients;
+using Xunit;
+
+namespace Octokit.Tests.Conventions
+{
+    public class TestConstructorTests
+    {
+        [Theory]
+        [MemberData("GetTestConstructorsClasses")]
+        public void CheckTestConstructorsNames(Type type)
+        {
+            const string constructorClassName = "TheCtor";
+            var classes = new HashSet<string>(type.GetNestedTypes().Select(t => t.Name));
+            
+            if (!classes.Contains(constructorClassName))
+            {
+                throw new MissingConstructorTestClassException(type);
+            }
+        }
+
+        public static IEnumerable<object[]> GetTestConstructorsClasses()
+        {
+            var tests = typeof(EventsClientTests)
+                .Assembly
+                .ExportedTypes
+                .Where(type => type.IsClass && type.IsPublic && type.Name.EndsWith("ClientTests"))
+                .Select(type => new[] { type }).ToList();
+            return tests;
+        }
+    }
+}