/// <summary>
        /// Tests a successful code example, defined
        /// in the default namespace, whose source code
        /// can be found.
        /// </summary>
        public static void TestCodeExample1(List <CodeExampleInfo> examples)
        {
            var exampleFullName = "Tests.CodeExamples.CodeExample1";
            var example         = Select(examples, exampleFullName);

            Assert.IsNotNull(example);
            CodeExampleInfoAssert.IsSuccessful(example);
            Assert.IsTrue(example.HasSourceCode);
            StringWriter writer = new StringWriter();

            writer.WriteLine("CodeExample1:output");
            CodeExampleInfoAssert.HasOutput(example, writer.ToString());

            var commentSymbol = example.Language.CommentSymbol;

            writer = new StringWriter();
            writer.WriteLine("using System;");
            writer.WriteLine();
            writer.WriteLine("namespace Tests.CodeExamples");
            writer.WriteLine("{");
            writer.WriteLine("    public class CodeExample1  ");
            writer.WriteLine("    {");
            writer.WriteLine("        public void Main()");
            writer.WriteLine("        {");
            writer.WriteLine("            Console.WriteLine(\"CodeExample1:output\");");
            writer.WriteLine("        }");
            writer.WriteLine("    }");
            writer.WriteLine("}");
            writer.WriteLine();
            writer.WriteLine(commentSymbol +
                             "Executing method Main() produces the following output:");
            writer.WriteLine(commentSymbol);
            writer.WriteLine(commentSymbol + "CodeExample1:output");
            CodeExampleInfoAssert.HasOutputFile(example, writer.ToString());
        }
        /// <summary>
        /// Tests a successful code example, defined
        /// in the default namespace, whose source code
        /// cannot be found.
        /// </summary>
        /// <remarks>
        /// <para>
        /// Source code files must be stored in a directory tree under a
        /// user defined folder, the <see cref="CodeExamplesAnalyzer.CodeBase"/>,
        /// reflecting the project namespace hierarchy.
        /// </para>
        /// <para>
        /// As a consequence, the source code for <see cref="CodeExample6"/> cannot
        /// be found since the file is in not in the expected directory.
        /// </para>
        /// </remarks>
        public static void TestCodeExample6(List <CodeExampleInfo> examples)
        {
            var exampleFullName = "Tests.CodeExamples.CodeExample6";
            var example         = Select(examples, exampleFullName);

            Assert.IsNotNull(example);
            CodeExampleInfoAssert.IsSuccessful(example);
            Assert.IsFalse(example.HasSourceCode);
            StringWriter writer = new StringWriter();

            writer.WriteLine("CodeExample6:output");
            CodeExampleInfoAssert.HasOutput(example, writer.ToString());

            CodeExampleInfoAssert.HasNotOutputFile(example);
        }