Added extra params (base-build-path, runtime, framework) and refactored parameter parsing into its own class with tests.

Changed program.cs to use the new dotnettestparams.

Hooked up the new parameters to the ProjectDependencyCommandResolver

src/Microsoft.DotNet.Cli.Utils/CommandResolution/CommandResolverArguments.cs

@@ -22,5 +22,7 @@ namespace Microsoft.DotNet.Cli.Utils
         public string Configuration { get; set; }
 
         public IEnumerable<string> InferredExtensions { get; set; }
+
+        public string BuildBasePath { get; set; }
     }
 }

src/Microsoft.DotNet.Cli.Utils/CommandResolution/ProjectDependenciesCommandResolver.cs

@@ -39,7 +39,7 @@ namespace Microsoft.DotNet.Cli.Utils
 
         public CommandSpec Resolve(CommandResolverArguments commandResolverArguments)
         {
-            if (commandResolverArguments.Framework == null 
+            if (commandResolverArguments.Framework == null
                 || commandResolverArguments.ProjectDirectory == null
                 || commandResolverArguments.Configuration == null
                 || commandResolverArguments.CommandName == null)
@@ -53,7 +53,8 @@ namespace Microsoft.DotNet.Cli.Utils
                     commandResolverArguments.Configuration,
                     commandResolverArguments.CommandName,
                     commandResolverArguments.CommandArguments.OrEmptyIfNull(),
-                    commandResolverArguments.OutputPath);
+                    commandResolverArguments.OutputPath,
+                    commandResolverArguments.BuildBasePath);
         }
 
         private CommandSpec ResolveFromProjectDependencies(
@@ -62,23 +63,25 @@ namespace Microsoft.DotNet.Cli.Utils
             string configuration,
             string commandName,
             IEnumerable<string> commandArguments,
-            string outputPath)
+            string outputPath,
+            string buildBasePath)
         {
             var allowedExtensions = GetAllowedCommandExtensionsFromEnvironment(_environment);
 
             var projectContext = GetProjectContextFromDirectory(
-                projectDirectory, 
+                projectDirectory,
                 framework);
 
             if (projectContext == null)
-            { 
+            {
                 return null;
             }
 
-            var depsFilePath = projectContext.GetOutputPaths(configuration, outputPath: outputPath).RuntimeFiles.DepsJson;
+            var depsFilePath =
+                projectContext.GetOutputPaths(configuration, buildBasePath, outputPath).RuntimeFiles.Deps;
 
             var dependencyLibraries = GetAllDependencyLibraries(projectContext);
-             
+
             return ResolveFromDependencyLibraries(
                 dependencyLibraries,
                 depsFilePath,

src/Microsoft.DotNet.Cli.Utils/ProjectDependenciesCommandFactory.cs

@@ -11,17 +11,20 @@ namespace Microsoft.DotNet.Cli.Utils
         private readonly NuGetFramework _nugetFramework;
         private readonly string _configuration;
         private readonly string _outputPath;
+        private readonly string _buildBasePath;
         private readonly string _projectDirectory;
 
         public ProjectDependenciesCommandFactory(
-            NuGetFramework nugetFramework, 
+            NuGetFramework nugetFramework,
-            string configuration, 
+            string configuration,
             string outputPath,
+            string buildBasePath,
             string projectDirectory)
         {
             _nugetFramework = nugetFramework;
             _configuration = configuration;
             _outputPath = outputPath;
+            _buildBasePath = buildBasePath;
             _projectDirectory = projectDirectory;
         }
 
@@ -42,11 +45,12 @@ namespace Microsoft.DotNet.Cli.Utils
             }
 
             var commandSpec = FindProjectDependencyCommands(
-                commandName, 
+                commandName,
-                args, 
+                args,
-                configuration, 
+                configuration,
-                framework, 
+                framework,
                 _outputPath,
+                _buildBasePath,
                 _projectDirectory);
 
             return Command.Create(commandSpec);
@@ -58,6 +62,7 @@ namespace Microsoft.DotNet.Cli.Utils
             string configuration,
             NuGetFramework framework,
             string outputPath,
+            string buildBasePath,
             string projectDirectory)
         {
             var commandResolverArguments = new CommandResolverArguments
@@ -67,6 +72,7 @@ namespace Microsoft.DotNet.Cli.Utils
                 Framework = framework,
                 Configuration = configuration,
                 OutputPath = outputPath,
+                BuildBasePath = buildBasePath,
                 ProjectDirectory = projectDirectory
             };
 

src/dotnet/commands/dotnet-test/AssemblyUnderTest.cs

@@ -0,0 +1,39 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using System.IO;
+using Microsoft.DotNet.ProjectModel;
+
+namespace Microsoft.DotNet.Tools.Test
+{
+    public class AssemblyUnderTest
+    {
+        private readonly ProjectContext _projectContext;
+        private readonly DotnetTestParams _dotentTestParams;
+
+        public AssemblyUnderTest(ProjectContext projectContext, DotnetTestParams dotentTestParams)
+        {
+            _projectContext = projectContext;
+            _dotentTestParams = dotentTestParams;
+        }
+
+        public string Path
+        {
+            get
+            {
+                var assemblyUnderTest = _projectContext.GetOutputPaths(
+                    _dotentTestParams.Config,
+                    outputPath: _dotentTestParams.Output).CompilationFiles.Assembly;
+
+                if (!string.IsNullOrEmpty(_dotentTestParams.Output))
+                {
+                    assemblyUnderTest = _projectContext.GetOutputPaths(
+                        _dotentTestParams.Config,
+                        outputPath: _dotentTestParams.Output).RuntimeFiles.Assembly;
+                }
+
+                return assemblyUnderTest;
+            }
+        }
+    }
+}

src/dotnet/commands/dotnet-test/ConsoleTestRunner.cs

@@ -0,0 +1,50 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using System.Collections.Generic;
+using Microsoft.DotNet.Cli.Utils;
+using Microsoft.DotNet.ProjectModel;
+
+namespace Microsoft.DotNet.Tools.Test
+{
+    public class ConsoleTestRunner : IDotnetTestRunner
+    {
+        public int RunTests(ProjectContext projectContext, DotnetTestParams dotnetTestParams)
+        {
+            var commandFactory =
+                new ProjectDependenciesCommandFactory(
+                    projectContext.TargetFramework,
+                    dotnetTestParams.Config,
+                    dotnetTestParams.Output,
+                    dotnetTestParams.BuildBasePath,
+                    projectContext.ProjectDirectory);
+
+            return commandFactory.Create(
+                    GetCommandName(projectContext.ProjectFile.TestRunner),
+                    GetCommandArgs(projectContext, dotnetTestParams),
+                    projectContext.TargetFramework,
+                    dotnetTestParams.Config)
+                .ForwardStdErr()
+                .ForwardStdOut()
+                .Execute()
+                .ExitCode;
+        }
+
+        private IEnumerable<string> GetCommandArgs(ProjectContext projectContext, DotnetTestParams dotnetTestParams)
+        {
+            var commandArgs = new List<string>
+            {
+                new AssemblyUnderTest(projectContext, dotnetTestParams).Path
+            };
+
+            commandArgs.AddRange(dotnetTestParams.RemainingArguments);
+
+            return commandArgs;
+        }
+
+        private static string GetCommandName(string testRunner)
+        {
+            return $"dotnet-test-{testRunner}";
+        }
+    }
+}

src/dotnet/commands/dotnet-test/DesignTimeRunner.cs

@@ -0,0 +1,69 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using System;
+using Microsoft.DotNet.Cli.Utils;
+using Microsoft.DotNet.ProjectModel;
+
+namespace Microsoft.DotNet.Tools.Test
+{
+    public class DesignTimeRunner : IDotnetTestRunner
+    {
+        public int RunTests(ProjectContext projectContext, DotnetTestParams dotnetTestParams)
+        {
+            Console.WriteLine("Listening on port {0}", dotnetTestParams.Port.Value);
+
+            HandleDesignTimeMessages(projectContext, dotnetTestParams);
+
+            return 0;
+        }
+
+        private static void HandleDesignTimeMessages(
+            ProjectContext projectContext,
+            DotnetTestParams dotnetTestParams)
+        {
+            var reportingChannelFactory = new ReportingChannelFactory();
+            var adapterChannel = reportingChannelFactory.CreateAdapterChannel(dotnetTestParams.Port.Value);
+
+            try
+            {
+                var pathToAssemblyUnderTest = new AssemblyUnderTest(projectContext, dotnetTestParams).Path;
+                var messages = new TestMessagesCollection();
+                using (var dotnetTest = new DotnetTest(messages, pathToAssemblyUnderTest))
+                {
+                    var commandFactory =
+                        new ProjectDependenciesCommandFactory(
+                            projectContext.TargetFramework,
+                            dotnetTestParams.Config,
+                            dotnetTestParams.Output,
+                            dotnetTestParams.BuildBasePath,
+                            projectContext.ProjectDirectory);
+
+                    var testRunnerFactory =
+                        new TestRunnerFactory(GetCommandName(projectContext.ProjectFile.TestRunner), commandFactory);
+
+                    dotnetTest
+                        .AddNonSpecificMessageHandlers(messages, adapterChannel)
+                        .AddTestDiscoveryMessageHandlers(adapterChannel, reportingChannelFactory, testRunnerFactory)
+                        .AddTestRunMessageHandlers(adapterChannel, reportingChannelFactory, testRunnerFactory)
+                        .AddTestRunnnersMessageHandlers(adapterChannel, reportingChannelFactory);
+
+                    dotnetTest.StartListeningTo(adapterChannel);
+
+                    adapterChannel.Accept();
+
+                    dotnetTest.StartHandlingMessages();
+                }
+            }
+            catch (Exception ex)
+            {
+                adapterChannel.SendError(ex);
+            }
+        }
+
+        private static string GetCommandName(string testRunner)
+        {
+            return $"test-{testRunner}";
+        }
+    }
+}

src/dotnet/commands/dotnet-test/DotnetTestParams.cs

@@ -0,0 +1,150 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using Microsoft.Dnx.Runtime.Common.CommandLine;
+using Microsoft.DotNet.Cli.Utils;
+using NuGet.Frameworks;
+using static System.Int32;
+
+namespace Microsoft.DotNet.Tools.Test
+{
+    public class DotnetTestParams
+    {
+        private readonly CommandLineApplication _app;
+
+        private CommandOption _outputOption;
+        private CommandOption _buildBasePath;
+        private CommandOption _frameworkOption;
+        private CommandOption _runtimeOption;
+        private CommandOption _configurationOption;
+        private CommandOption _portOption;
+        private CommandOption _parentProcessIdOption;
+        private CommandArgument _projectPath;
+
+        public int? Port { get; set; }
+
+        public int? ParentProcessId { get; set; }
+
+        public string Runtime { get; set; }
+
+        public string Config { get; set; }
+
+        public string BuildBasePath { get; set; }
+
+        public string Output { get; set; }
+
+        public string ProjectPath { get; set; }
+
+        public NuGetFramework Framework { get; set; }
+
+        public List<string> RemainingArguments { get; set; }
+
+        public DotnetTestParams()
+        {
+            _app = new CommandLineApplication(false)
+            {
+                Name = "dotnet test",
+                FullName = ".NET Test Driver",
+                Description = "Test Driver for the .NET Platform"
+            };
+
+            AddDotnetTestParameters();
+        }
+
+        public void Parse(string[] args)
+        {
+            _app.OnExecute(() =>
+            {
+                // Locate the project and get the name and full path
+                ProjectPath = _projectPath.Value;
+                if (string.IsNullOrEmpty(ProjectPath))
+                {
+                    ProjectPath = Directory.GetCurrentDirectory();
+                }
+
+                if (_parentProcessIdOption.HasValue())
+                {
+                    int processId;
+
+                    if (!TryParse(_parentProcessIdOption.Value(), out processId))
+                    {
+                        throw new InvalidOperationException(
+                            $"Invalid process id '{_parentProcessIdOption.Value()}'. Process id must be an integer.");
+                    }
+
+                    ParentProcessId = processId;
+                }
+
+                if (_portOption.HasValue())
+                {
+                    int port;
+
+                    if (!TryParse(_portOption.Value(), out port))
+                    {
+                        throw new InvalidOperationException($"{_portOption.Value()} is not a valid port number.");
+                    }
+
+                    Port = port;
+                }
+
+                if (_frameworkOption.HasValue())
+                {
+                    Framework = NuGetFramework.Parse(_frameworkOption.Value());
+                }
+
+                Output = _outputOption.Value();
+                BuildBasePath = _buildBasePath.Value();
+                Config = _configurationOption.Value() ?? Constants.DefaultConfiguration;
+                Runtime = _runtimeOption.Value();
+
+                RemainingArguments = _app.RemainingArguments;
+
+                return 0;
+            });
+
+            _app.Execute(args);
+        }
+
+        private void AddDotnetTestParameters()
+        {
+            _app.HelpOption("-?|-h|--help");
+
+            _parentProcessIdOption = _app.Option(
+                "--parentProcessId",
+                "Used by IDEs to specify their process ID. Test will exit if the parent process does.",
+                CommandOptionType.SingleValue);
+            _portOption = _app.Option(
+                "--port",
+                "Used by IDEs to specify a port number to listen for a connection.",
+                CommandOptionType.SingleValue);
+            _configurationOption = _app.Option(
+                "-c|--configuration <CONFIGURATION>",
+                "Configuration under which to build",
+                CommandOptionType.SingleValue);
+            _outputOption = _app.Option(
+                "-o|--output <OUTPUT_DIR>",
+                "Directory in which to find the binaries to be run",
+                CommandOptionType.SingleValue);
+            _buildBasePath = _app.Option(
+                "-b|--build-base-path <OUTPUT_DIR>",
+                "Directory in which to find temporary outputs",
+                CommandOptionType.SingleValue);
+            _frameworkOption = _app.Option(
+                "-f|--framework <FRAMEWORK>",
+                "Looks for test binaries for a specific framework",
+                CommandOptionType.SingleValue);
+            _runtimeOption = _app.Option(
+                "-r|--runtime <RUNTIME_IDENTIFIER>",
+                "Look for test binaries for a for the specified runtime",
+                CommandOptionType.SingleValue);
+            _projectPath = _app.Argument(
+                "<PROJECT>",
+                "The project to test, defaults to the current directory. Can be a path to a project.json or a project directory.");
+        }
+    }
+}

src/dotnet/commands/dotnet-test/IDotnetTestRunner.cs

@@ -0,0 +1,13 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using Microsoft.DotNet.ProjectModel;
+using Microsoft.DotNet.Cli.Utils;
+
+namespace Microsoft.DotNet.Tools.Test
+{
+    public interface IDotnetTestRunner
+    {
+        int RunTests(ProjectContext projectContext, DotnetTestParams dotnetTestParams);
+    }
+}

src/dotnet/commands/dotnet-test/Program.cs

@@ -18,187 +18,44 @@ namespace Microsoft.DotNet.Tools.Test
         {
             DebugHelper.HandleDebugSwitch(ref args);
 
-            var app = new CommandLineApplication(false)
+            var dotnetTestParams = new DotnetTestParams();
-            {
-                Name = "dotnet test",
-                FullName = ".NET Test Driver",
-                Description = "Test Driver for the .NET Platform"
-            };
 
-            app.HelpOption("-?|-h|--help");
+            dotnetTestParams.Parse(args);
-
-            var parentProcessIdOption = app.Option("--parentProcessId", "Used by IDEs to specify their process ID. Test will exit if the parent process does.", CommandOptionType.SingleValue);
-            var portOption = app.Option("--port", "Used by IDEs to specify a port number to listen for a connection.", CommandOptionType.SingleValue);
-            var configurationOption = app.Option("-c|--configuration <CONFIGURATION>", "Configuration under which to build", CommandOptionType.SingleValue);
-            var output = app.Option("-o|--output <OUTPUT_DIR>", "Directory in which to find the binaries to be run", CommandOptionType.SingleValue);
-            var projectPath = app.Argument("<PROJECT>", "The project to test, defaults to the current directory. Can be a path to a project.json or a project directory.");
-
-            app.OnExecute(() =>
-            {
-                try
-                {
-                    // Register for parent process's exit event
-                    if (parentProcessIdOption.HasValue())
-                    {
-                        int processId;
-
-                        if (!Int32.TryParse(parentProcessIdOption.Value(), out processId))
-                        {
-                            throw new InvalidOperationException($"Invalid process id '{parentProcessIdOption.Value()}'. Process id must be an integer.");
-                        }
-
-                        RegisterForParentProcessExit(processId);
-                    }
-
-                    var projectContexts = CreateProjectContexts(projectPath.Value);
-
-                    var projectContext = projectContexts.First();
-
-                    var testRunner = projectContext.ProjectFile.TestRunner;
-
-                    var configuration = configurationOption.Value() ?? Constants.DefaultConfiguration;
-
-                    var outputPath = output.Value();
-
-                    if (portOption.HasValue())
-                    {
-                        int port;
-
-                        if (!Int32.TryParse(portOption.Value(), out port))
-                        {
-                            throw new InvalidOperationException($"{portOption.Value()} is not a valid port number.");
-                        }
-
-                        return RunDesignTime(port, projectContext, testRunner, configuration, outputPath);
-                    }
-                    else
-                    {
-                        return RunConsole(projectContext, app, testRunner, configuration, outputPath);
-                    }
-                }
-                catch (InvalidOperationException ex)
-                {
-                    TestHostTracing.Source.TraceEvent(TraceEventType.Error, 0, ex.ToString());
-                    return -1;
-                }
-                catch (Exception ex)
-                {
-                    TestHostTracing.Source.TraceEvent(TraceEventType.Error, 0, ex.ToString());
-                    return -2;
-                }
-
-            });
-
-            return app.Execute(args);
-        }
-
-        private static int RunConsole(
-            ProjectContext projectContext,
-            CommandLineApplication app,
-            string testRunner,
-            string configuration,
-            string outputPath)
-        {
-            var commandArgs = new List<string> { GetAssemblyUnderTest(projectContext, configuration, outputPath) };
-            commandArgs.AddRange(app.RemainingArguments);
-
-            var commandFactory = 
-                new ProjectDependenciesCommandFactory(
-                    projectContext.TargetFramework, 
-                    configuration, 
-                    outputPath,
-                    projectContext.ProjectDirectory);
-            
-
-            return commandFactory.Create(
-                    $"dotnet-{GetCommandName(testRunner)}",
-                    commandArgs,
-                    projectContext.TargetFramework,
-                    configuration)
-                .ForwardStdErr()
-                .ForwardStdOut()
-                .Execute()
-                .ExitCode;
-        }
-
-        private static string GetAssemblyUnderTest(ProjectContext projectContext, string configuration, string outputPath)
-        {
-            var assemblyUnderTest =
-                projectContext.GetOutputPaths(configuration, outputPath: outputPath).CompilationFiles.Assembly;
-
-            if (!string.IsNullOrEmpty(outputPath))
-            {
-                assemblyUnderTest =
-                    projectContext.GetOutputPaths(configuration, outputPath: outputPath).RuntimeFiles.Assembly;
-            }
-
-            return assemblyUnderTest;
-        }
-
-        private static int RunDesignTime(
-            int port,
-            ProjectContext
-            projectContext,
-            string testRunner,
-            string configuration,
-            string outputPath)
-        {
-            Console.WriteLine("Listening on port {0}", port);
-
-            HandleDesignTimeMessages(projectContext, testRunner, port, configuration, outputPath);
-
-            return 0;
-        }
-
-        private static void HandleDesignTimeMessages(
-            ProjectContext projectContext,
-            string testRunner,
-            int port,
-            string configuration,
-            string outputPath)
-        {
-            var reportingChannelFactory = new ReportingChannelFactory();
-            var adapterChannel = reportingChannelFactory.CreateAdapterChannel(port);
 
             try
             {
-                var assemblyUnderTest = GetAssemblyUnderTest(projectContext, configuration, outputPath);
+                // Register for parent process's exit event
-                var messages = new TestMessagesCollection();
+                if (dotnetTestParams.ParentProcessId.HasValue)
-                using (var dotnetTest = new DotnetTest(messages, assemblyUnderTest))
                 {
-                    var commandFactory = 
+                    RegisterForParentProcessExit(dotnetTestParams.ParentProcessId.Value);
-                        new ProjectDependenciesCommandFactory(
-                            projectContext.TargetFramework, 
-                            configuration, 
-                            outputPath,
-                            projectContext.ProjectDirectory);
-                        
-                    var testRunnerFactory = new TestRunnerFactory(GetCommandName(testRunner), commandFactory);
-
-                    dotnetTest
-                        .AddNonSpecificMessageHandlers(messages, adapterChannel)
-                        .AddTestDiscoveryMessageHandlers(adapterChannel, reportingChannelFactory, testRunnerFactory)
-                        .AddTestRunMessageHandlers(adapterChannel, reportingChannelFactory, testRunnerFactory)
-                        .AddTestRunnnersMessageHandlers(adapterChannel, reportingChannelFactory);
-
-                    dotnetTest.StartListeningTo(adapterChannel);
-
-                    adapterChannel.Connect();
-
-                    dotnetTest.StartHandlingMessages();
                 }
+
+                var projectContexts = CreateProjectContexts(dotnetTestParams.ProjectPath);
+
+                var projectContext = projectContexts.First();
+
+                var testRunner = projectContext.ProjectFile.TestRunner;
+
+                IDotnetTestRunner dotnetTestRunner = new ConsoleTestRunner();
+                if (dotnetTestParams.Port.HasValue)
+                {
+                    dotnetTestRunner = new DesignTimeRunner();
+                }
+
+                return dotnetTestRunner.RunTests(projectContext, dotnetTestParams);
+            }
+            catch (InvalidOperationException ex)
+            {
+                TestHostTracing.Source.TraceEvent(TraceEventType.Error, 0, ex.ToString());
+                return -1;
             }
             catch (Exception ex)
             {
-                adapterChannel.SendError(ex);
+                TestHostTracing.Source.TraceEvent(TraceEventType.Error, 0, ex.ToString());
+                return -2;
             }
         }
 
-        private static string GetCommandName(string testRunner)
-        {
-            return $"test-{testRunner}";
-        }
-
         private static void RegisterForParentProcessExit(int id)
         {
             var parentProcess = Process.GetProcesses().FirstOrDefault(p => p.Id == id);

test/dotnet-test.UnitTests/GivenThatWeWantToParseArgumentsForDotnetTest.cs

@@ -0,0 +1,183 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using System;
+using System.IO;
+using FluentAssertions;
+using Microsoft.DotNet.Tools.Test;
+using Xunit;
+
+namespace Microsoft.Dotnet.Tools.Test.Tests
+{
+    public class GivenThatWeWantToParseArgumentsForDotnetTest
+    {
+        private const string ProjectJson = "project.json";
+        private const string Framework = "netstandardapp1.5";
+        private const string Output = "some output";
+        private const string BuildBasePath = "some build base path";
+        private const string Config = "some config";
+        private const string Runtime = "some runtime";
+        private const int ParentProcessId = 1010;
+        private const int Port = 2314;
+
+        private DotnetTestParams _dotnetTestFullParams;
+        private DotnetTestParams _emptyDotnetTestParams;
+
+        public GivenThatWeWantToParseArgumentsForDotnetTest()
+        {
+            _dotnetTestFullParams = new DotnetTestParams();
+            _emptyDotnetTestParams = new DotnetTestParams();
+
+            _dotnetTestFullParams.Parse(new[]
+            {
+                ProjectJson,
+                "--parentProcessId", ParentProcessId.ToString(),
+                "--port", Port.ToString(),
+                "--framework", Framework,
+                "--output", Output,
+                "--build-base-path", BuildBasePath,
+                "--configuration", Config,
+                "--runtime", Runtime,
+                "--additional-parameters", "additional-parameter-value"
+            });
+
+            _emptyDotnetTestParams.Parse(new string[] { });
+        }
+
+        [Fact]
+        public void It_sets_the_project_path_current_folder_if_one_is_not_passed_in()
+        {
+            _emptyDotnetTestParams.ProjectPath.Should().Be(Directory.GetCurrentDirectory());
+        }
+
+        [Fact]
+        public void It_sets_the_project_path_to_the_passed_value()
+        {
+            _dotnetTestFullParams.ProjectPath.Should().Be(ProjectJson);
+        }
+
+        [Fact]
+        public void It_throws_InvalidOperationException_if_an_invalid_parent_process_id_is_passed_to_it()
+        {
+            var dotnetTestParams = new DotnetTestParams();
+            const string invalidParentProcessId = "daddy";
+            Action action = () => dotnetTestParams.Parse(new [] { "--parentProcessId", invalidParentProcessId });
+
+            action
+                .ShouldThrow<InvalidOperationException>()
+                .WithMessage($"Invalid process id '{invalidParentProcessId}'. Process id must be an integer.");
+        }
+
+        [Fact]
+        public void It_converts_the_parent_process_id_to_int_when_a_valid_one_is_passed()
+        {
+            _dotnetTestFullParams.ParentProcessId.Should().Be(ParentProcessId);
+        }
+
+        [Fact]
+        public void It_does_not_set_parent_process_id_when_one_is_not_passed()
+        {
+            _emptyDotnetTestParams.ParentProcessId.Should().NotHaveValue();
+        }
+
+        [Fact]
+        public void It_throws_InvalidOperationException_if_an_invalid_port_is_passed_to_it()
+        {
+            var dotnetTestParams = new DotnetTestParams();
+            const string invalidPort = "door";
+            Action action = () => dotnetTestParams.Parse(new[] { "--port", invalidPort });
+
+            action
+                .ShouldThrow<InvalidOperationException>()
+                .WithMessage($"{invalidPort} is not a valid port number.");
+        }
+
+        [Fact]
+        public void It_converts_the_port_to_int_when_a_valid_one_is_passed()
+        {
+            _dotnetTestFullParams.Port.Should().Be(Port);
+        }
+
+        [Fact]
+        public void It_does_not_set_port_when_one_is_not_passed()
+        {
+            _emptyDotnetTestParams.Port.Should().NotHaveValue();
+        }
+
+        [Fact]
+        public void It_converts_the_framework_to_NugetFramework()
+        {
+            _dotnetTestFullParams.Framework.DotNetFrameworkName.Should().Be(".NETStandardApp,Version=v1.5");
+        }
+
+        [Fact]
+        public void It_does_not_set_framework_when_one_is_not_passed()
+        {
+            _emptyDotnetTestParams.Framework.Should().BeNull();
+        }
+
+        [Fact]
+        public void It_sets_the_framework_to_unsupported_when_an_invalid_framework_is_passed_in()
+        {
+            var dotnetTestParams = new DotnetTestParams();
+            dotnetTestParams.Parse(new[] { "--framework", "farm work" });
+
+            dotnetTestParams.Framework.DotNetFrameworkName.Should().Be("Unsupported,Version=v0.0");
+        }
+
+        [Fact]
+        public void It_sets_Output_when_one_is_passed_in()
+        {
+            _dotnetTestFullParams.Output.Should().Be(Output);
+        }
+
+        [Fact]
+        public void It_leaves_Output_null_when_one_is_not_passed_in()
+        {
+            _emptyDotnetTestParams.Output.Should().BeNull();
+        }
+
+        [Fact]
+        public void It_sets_BuildBasePath_when_one_is_passed_in()
+        {
+            _dotnetTestFullParams.BuildBasePath.Should().Be(BuildBasePath);
+        }
+
+        [Fact]
+        public void It_leaves_BuildBasePath_null_when_one_is_not_passed_in()
+        {
+            _emptyDotnetTestParams.BuildBasePath.Should().BeNull();
+        }
+
+        [Fact]
+        public void It_sets_Config_to_passed_in_value()
+        {
+            _dotnetTestFullParams.Config.Should().Be(Config);
+        }
+
+        [Fact]
+        public void It_sets_Config_to_Debug_when_one_is_not_passed_in()
+        {
+            _emptyDotnetTestParams.Config.Should().Be("Debug");
+        }
+
+        [Fact]
+        public void It_sets_Runtime_when_one_is_passed_in()
+        {
+            _dotnetTestFullParams.Runtime.Should().Be(Runtime);
+        }
+
+        [Fact]
+        public void It_leaves_Runtime_null_when_one_is_not_passed_in()
+        {
+            _emptyDotnetTestParams.Runtime.Should().BeNull();
+        }
+
+        [Fact]
+        public void It_sets_any_remaining_params_to_RemainingArguments()
+        {
+            _dotnetTestFullParams.RemainingArguments.ShouldBeEquivalentTo(
+                new [] { "--additional-parameters", "additional-parameter-value" });
+        }
+    }
+}