public void VisitProject_ShouldCallNugetUpdate_ForEachNugetPackageInDependencyArtifactsFolder()
        {
            var fileSystem = RegisterMockFileSystem();
            var nuget      = Container.Resolve <INuget>();
            var instance   = new BuildAndUpdateDependenciesVisitor(new List <string>());

            EnsureFiles(fileSystem, Lib1PackagesDirectory, Lib1Packages);
            EnsureFiles(fileSystem, Lib1PackagesDirectory, new List <string>
            {
                ".nupkg",
                "bad.input.nupkg"
            });

            EnsureFiles(fileSystem, Lib2Directory, Lib2Solutions);
            Dictionary <string, List <string> > updatedPackages = new Dictionary <string, List <string> >();

            nuget.Arrange(n => n.Update(Arg.AnyString, Arg.AnyString, Arg.AnyString, Arg.AnyString))
            .Returns((string solution, string id, string version, string sourceDirectory) =>
            {
                Assert.AreEqual(Lib2Directory, nuget.WorkingDirectory, "Invalid working directory for Nuget.exe");

                var key = $"{id}.{version}";
                if (updatedPackages.ContainsKey(key))
                {
                    var list = updatedPackages[key];

                    Assert.IsFalse(list.Contains(solution));
                    list.Add(solution);
                }
                else
                {
                    updatedPackages.Add(key, new List <string> {
                        solution
                    });
                }
                return(ReturnCode.Success);
            });

            fileSystem.Directory.CreateDirectory(Lib2Directory);

            var code = instance.VisitProject(Lib2Directory, Lib2Config);

            Assert.AreEqual(ReturnCode.Success, code, "Invalid Return Code");
            Assert.AreEqual(ReturnCode.Success, instance.ReturnCode, "Invalid Return Code");

            Assert.AreEqual(Lib1Packages.Count, updatedPackages.Keys.Count, "Invalid number of updated packages");

            foreach (var kvp in updatedPackages)
            {
                Assert.IsTrue(Lib1Packages.Any(p => fileSystem.Path.GetFileNameWithoutExtension(p) == kvp.Key));

                foreach (var solution in kvp.Value)
                {
                    Assert.IsTrue(Lib2Solutions.Any(s => s == fileSystem.Path.GetFileName(solution)), $"{solution} was not found in Lib2Solutions");
                }
            }
        }
        public void VisitProject_ShouldReturn_CouldNotCreateCacheDirectory_WhenCacheDirectoryFailsToInitialize()
        {
            var fileSystem = Container.Resolve <IFileSystem>();

            fileSystem.Directory.Arrange(d => d.Exists(Arg.AnyString)).Returns(true);
            fileSystem.Directory.Arrange(d => d.GetFiles(Arg.AnyString, "*.nupkg"))
            .Returns(Lib1Packages.ToArray());
            fileSystem.Directory.Arrange(d => d.GetFiles(Arg.AnyString, "*.sln", Arg.IsAny <SearchOption>()))
            .Returns(Lib2Solutions.Select(s => Lib2Directory + "\\" + s).ToArray());

            fileSystem.Path.Arrange(p => p.GetFileNameWithoutExtension(Arg.AnyString))
            .Returns(Path.GetFileNameWithoutExtension);

            fileSystem.Directory.Arrange(d => d.CreateDirectory(Arg.AnyString))
            .Throws <IOException>("Access Denied");

            var instance = new BuildAndUpdateDependenciesVisitor(new List <string>());

            var code = instance.VisitProject(Lib2Directory, Lib2Config);

            Assert.AreEqual(ReturnCode.CouldNotCreateCacheDirectory, code, "Invalid Return Code");
            Assert.AreEqual(ReturnCode.CouldNotCreateCacheDirectory, instance.ReturnCode, "Invalid Return Code");
        }