public void RestoreCommandPickPackagesConfigFile()
        {
            // Arrange
            var fileSystem = new MockFileSystem();

            fileSystem.AddFile("packages.config");

            var restoreCommand = new RestoreCommand()
            {
                FileSystem = fileSystem
            };

            // Act
            restoreCommand.DetermineRestoreMode();

            // Assert
            Assert.False(restoreCommand.RestoringForSolution);
            Assert.Equal(fileSystem.GetFullPath("packages.config"), restoreCommand.PackagesConfigFileFullPath);
        }