Adding dotnet run tests for passing arguments to the app.

Microsoft.DotNet.Cli.sln

@@ -103,6 +103,8 @@ Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "dotnet-dependency-tool-invo
 EndProject
 Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "Microsoft.DotNet.Compiler.Common.Tests", "test\Microsoft.DotNet.Compiler.Common.Tests\Microsoft.DotNet.Compiler.Common.Tests.xproj", "{44E7D1AC-DCF1-4A18-9C22-F09E6BB302B5}"
 EndProject
+Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "dotnet-run.Tests", "test\dotnet-run.Tests\dotnet-run.Tests.xproj", "{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F}"
+EndProject
 Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "Performance", "test\Performance\Performance.xproj", "{6A3095FF-A7C5-4300-85A9-C025C384401D}"
 EndProject
 Global
@@ -725,6 +727,22 @@ Global
 		{44E7D1AC-DCF1-4A18-9C22-F09E6BB302B5}.RelWithDebInfo|Any CPU.Build.0 = Release|Any CPU
 		{44E7D1AC-DCF1-4A18-9C22-F09E6BB302B5}.RelWithDebInfo|x64.ActiveCfg = Release|Any CPU
 		{44E7D1AC-DCF1-4A18-9C22-F09E6BB302B5}.RelWithDebInfo|x64.Build.0 = Release|Any CPU
+		{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F}.Debug|x64.Build.0 = Debug|Any CPU
+		{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F}.MinSizeRel|Any CPU.ActiveCfg = Debug|Any CPU
+		{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F}.MinSizeRel|Any CPU.Build.0 = Debug|Any CPU
+		{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F}.MinSizeRel|x64.ActiveCfg = Debug|Any CPU
+		{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F}.MinSizeRel|x64.Build.0 = Debug|Any CPU
+		{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F}.Release|x64.ActiveCfg = Release|Any CPU
+		{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F}.Release|x64.Build.0 = Release|Any CPU
+		{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F}.RelWithDebInfo|Any CPU.ActiveCfg = Release|Any CPU
+		{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F}.RelWithDebInfo|Any CPU.Build.0 = Release|Any CPU
+		{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F}.RelWithDebInfo|x64.ActiveCfg = Release|Any CPU
+		{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F}.RelWithDebInfo|x64.Build.0 = Release|Any CPU
 		{6A3095FF-A7C5-4300-85A9-C025C384401D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{6A3095FF-A7C5-4300-85A9-C025C384401D}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{6A3095FF-A7C5-4300-85A9-C025C384401D}.Debug|x64.ActiveCfg = Debug|Any CPU
@@ -789,6 +807,7 @@ Global
 		{1AB5B24B-B317-4142-A5D1-A6E84F15BA34} = {ADA7052B-884B-4776-8B8D-D04191D0AA70}
 		{C26A48BB-193F-450C-AB09-4D3324C78188} = {1AB5B24B-B317-4142-A5D1-A6E84F15BA34}
 		{44E7D1AC-DCF1-4A18-9C22-F09E6BB302B5} = {17735A9D-BFD9-4585-A7CB-3208CA6EA8A7}
+		{35E3C2DC-9B38-4EC5-8DD7-C32458DC485F} = {17735A9D-BFD9-4585-A7CB-3208CA6EA8A7}
 		{6A3095FF-A7C5-4300-85A9-C025C384401D} = {17735A9D-BFD9-4585-A7CB-3208CA6EA8A7}
 	EndGlobalSection
 EndGlobal

test/Microsoft.DotNet.Tools.Tests.Utilities/Commands/RunCommand.cs

@@ -1,8 +1,9 @@
 // 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.Cli.Utils;
+using System.Linq;
 using System.Threading.Tasks;
+using Microsoft.DotNet.Cli.Utils;
 
 namespace Microsoft.DotNet.Tools.Test.Utilities
 {
@@ -20,22 +21,18 @@ namespace Microsoft.DotNet.Tools.Test.Utilities
 
         private string ConfigurationOption => string.IsNullOrEmpty(_configuration) ? "" : $"-c {_configuration}";
 
-        private string PreserveTemporaryOption => _preserveTemporary ? $"-t \"{_projectPath}\"" : "";
-
         private string AppArgsArgument => _appArgs;
 
         public RunCommand(
             string projectPath,
             string framework = "",
             string configuration = "",
-            bool preserveTemporary = false,
             string appArgs = "")
             : base("dotnet")
         {
             _projectPath = projectPath;
             _framework = framework;
             _configuration = configuration;
-            _preserveTemporary = preserveTemporary;
             _appArgs = appArgs;
         }
 
@@ -57,6 +54,17 @@ namespace Microsoft.DotNet.Tools.Test.Utilities
             return base.ExecuteAsync(args);
         }
 
-        private string BuildArgs() => $"{ProjectPathOption} {FrameworkOption} {ConfigurationOption} {PreserveTemporaryOption} {AppArgsArgument}";
+        private string BuildArgs()
+        {
+            return string.Join(" ",
+                new[]
+                {
+                    ProjectPathOption,
+                    FrameworkOption,
+                    ConfigurationOption,
+                    AppArgsArgument,
+                }
+                .Where(s => !string.IsNullOrEmpty(s)));
+        }
     }
 }

test/dotnet-run.Tests/RunTests.cs

@@ -82,18 +82,67 @@ namespace Microsoft.DotNet.Tools.Run.Tests
                 .HaveStdOutContaining("Hélló Wórld!");
         }
 
-        private void CopyProjectToTempDir(string projectDir, TempDirectory tempDir)
+        [Fact]
+        public void ItPassesArgumentsToTheApp()
         {
-            // copy all the files to temp dir
+            TestInstance instance = TestAssetsManager.CreateTestInstance("TestAppWithArgs")
-            foreach (var file in Directory.EnumerateFiles(projectDir))
+                                                     .WithLockFiles()
-            {
+                                                     .WithBuildArtifacts();
-                tempDir.CopyFile(file);
+            new RunCommand(instance.TestRoot)
-            }
+                .ExecuteWithCapturedOutput("one --two -three")
+                .Should()
+                .Pass()
+                .And
+                .HaveStdOutContaining(
+                    JoinWithNewlines(
+                        "Hello World!",
+                        "I was passed 3 args:",
+                        "arg: [one]",
+                        "arg: [--two]",
+                        "arg: [-three]"));
         }
 
-        private string GetProjectPath(TempDirectory projectDir)
+        [Fact]
+        public void ItPassesAllArgsAfterUnexpectedArg()
         {
-            return Path.Combine(projectDir.Path, "project.json");
+            TestInstance instance = TestAssetsManager.CreateTestInstance("TestAppWithArgs")
+                                                     .WithLockFiles()
+                                                     .WithBuildArtifacts();
+            new RunCommand(instance.TestRoot)
+                .ExecuteWithCapturedOutput("Hello -f")
+                .Should()
+                .Pass()
+                .And
+                .HaveStdOutContaining(
+                    JoinWithNewlines(
+                        "Hello World!",
+                        "I was passed 2 args:",
+                        "arg: [Hello]",
+                        "arg: [-f]"));
+        }
+
+        [Fact]
+        public void ItHandlesArgSeparatorCorrectly()
+        {
+            TestInstance instance = TestAssetsManager.CreateTestInstance("TestAppWithArgs")
+                                                     .WithLockFiles()
+                                                     .WithBuildArtifacts();
+            new RunCommand(instance.TestRoot)
+                .ExecuteWithCapturedOutput("-- one two")
+                .Should()
+                .Pass()
+                .And
+                .HaveStdOutContaining(
+                    JoinWithNewlines(
+                        "Hello World!",
+                        "I was passed 2 args:",
+                        "arg: [one]",
+                        "arg: [two]"));
+        }
+
+        private static string JoinWithNewlines(params string[] values)
+        {
+            return string.Join(Environment.NewLine, values);
         }
     }
 }