Added IAggregateExceptionTestBuilder to test for contained exception types (#73)

Author: ivaylokenov

src/MyWebApi/Builders/Contracts/ExceptionErrors/IAggregateExceptionTestBuilder.cs

@@ -16,7 +16,8 @@
 
 namespace MyWebApi.Builders.Contracts.ExceptionErrors
 {
-    public interface IAggregateExceptionTestBuilder : IExceptionTestBuilder
+    public interface IAggregateExceptionTestBuilder : IBaseExceptionTestBuilder
     {
+        IAndAggregateExceptionTestBuilder ContainingInnerExceptionOfType<TInnerException>();
     }
 }

src/MyWebApi/Builders/Contracts/ExceptionErrors/IAndAggregateExceptionTestBuilder.cs

@@ -0,0 +1,23 @@
+// MyWebApi - ASP.NET Web API Fluent Testing Framework
+// Copyright (C) 2015 Ivaylo Kenov.
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see http://www.gnu.org/licenses/.
+
+namespace MyWebApi.Builders.Contracts.ExceptionErrors
+{
+    public interface IAndAggregateExceptionTestBuilder : IAggregateExceptionTestBuilder
+    {
+        IAggregateExceptionTestBuilder AndAlso();
+    }
+}

src/MyWebApi/Builders/Contracts/ExceptionErrors/IBaseExceptionTestBuilder.cs

@@ -0,0 +1,36 @@
+// MyWebApi - ASP.NET Web API Fluent Testing Framework
+// Copyright (C) 2015 Ivaylo Kenov.
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see http://www.gnu.org/licenses/.
+
+namespace MyWebApi.Builders.Contracts.ExceptionErrors
+{
+    using Base;
+
+    public interface IBaseExceptionTestBuilder : IBaseTestBuilder
+    {
+        /// <summary>
+        /// Tests exception message using test builder.
+        /// </summary>
+        /// <returns>Exception message test builder.</returns>
+        IExceptionMessageTestBuilder WithMessage();
+
+        /// <summary>
+        /// Tests exception message whether it is equal to the provided message as string.
+        /// </summary>
+        /// <param name="message">Expected exception message as string.</param>
+        /// <returns>The same exception test builder.</returns>
+        IAndExceptionTestBuilder WithMessage(string message);
+    }
+}

src/MyWebApi/Builders/Contracts/ExceptionErrors/IExceptionTestBuilder.cs

@@ -21,26 +21,13 @@ namespace MyWebApi.Builders.Contracts.ExceptionErrors
     /// <summary>
     /// Used for testing expected exceptions.
     /// </summary>
-    public interface IExceptionTestBuilder : IBaseTestBuilder
+    public interface IExceptionTestBuilder : IBaseExceptionTestBuilder
     {
         /// <summary>
         /// Tests whether certain type of exception is returned from the invoked action.
         /// </summary>
         /// <typeparam name="TException">Type of the expected exception.</typeparam>
         /// <returns>The same exception test builder.</returns>
         IAndExceptionTestBuilder OfType<TException>();
-
-        /// <summary>
-        /// Tests exception message using test builder.
-        /// </summary>
-        /// <returns>Exception message test builder.</returns>
-        IExceptionMessageTestBuilder WithMessage();
-
-        /// <summary>
-        /// Tests exception message whether it is equal to the provided message as string.
-        /// </summary>
-        /// <param name="message">Expected exception message as string.</param>
-        /// <returns>The same exception test builder.</returns>
-        IAndExceptionTestBuilder WithMessage(string message);
     }
 }

src/MyWebApi/Builders/ExceptionErrors/AggregateExceptionTestBuilder.cs

@@ -17,10 +17,14 @@
 namespace MyWebApi.Builders.ExceptionErrors
 {
     using System;
+    using System.Linq;
     using System.Web.Http;
+    using Common.Extensions;
     using Contracts.ExceptionErrors;
+    using Exceptions;
+    using Utilities;
 
-    public class AggregateExceptionTestBuilder : ExceptionTestBuilder, IAggregateExceptionTestBuilder
+    public class AggregateExceptionTestBuilder : ExceptionTestBuilder, IAndAggregateExceptionTestBuilder
     {
         private readonly AggregateException aggregateException;
 
@@ -32,5 +36,26 @@ public AggregateExceptionTestBuilder(
         {
             this.aggregateException = caughtException;
         }
+
+        public IAndAggregateExceptionTestBuilder ContainingInnerExceptionOfType<TInnerException>()
+        {
+            var expectedInnerExceptionType = typeof(TInnerException);
+            var innerExceptionFound = this.aggregateException.InnerExceptions.Any(e => e.GetType() == expectedInnerExceptionType);
+            if (!innerExceptionFound)
+            {
+                throw new InvalidExceptionAssertionException(string.Format(
+                    "When calling {0} action in {1} expected AggregateException to contain {2}, but none was found.",
+                    this.ActionName,
+                    this.Controller.GetName(),
+                    expectedInnerExceptionType.ToFriendlyTypeName()));
+            }
+
+            return this;
+        }
+
+        public new IAggregateExceptionTestBuilder AndAlso()
+        {
+            return this;
+        }
     }
 }

src/MyWebApi/MyWebApi.csproj

@@ -73,6 +73,8 @@
     <Compile Include="Builders\And\AndProvideTestBuilder{TActionResult}.cs" />
     <Compile Include="Builders\And\AndTestBuilder.cs" />
     <Compile Include="Builders\Contracts\ExceptionErrors\IAggregateExceptionTestBuilder.cs" />
+    <Compile Include="Builders\Contracts\ExceptionErrors\IAndAggregateExceptionTestBuilder.cs" />
+    <Compile Include="Builders\Contracts\ExceptionErrors\IBaseExceptionTestBuilder.cs" />
     <Compile Include="Builders\Contracts\HttpActionResults\Ok\IAndOkTestBuilder.cs" />
     <Compile Include="Builders\Contracts\HttpActionResults\Ok\IOkTestBuilder.cs" />
     <Compile Include="Builders\Contracts\HttpRequests\IAndHttpRequestMessageBuilder.cs" />