Merge pull request #4059 from dotnet/piotrpMSFT/TestAssetManager

Migrate to Test Asset Manager

test/Microsoft.DotNet.Cli.Utils.Tests/GivenAProjectDependenciesCommandFactory.cs

@@ -21,7 +21,7 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
             var configuration = "Debug";
 
             var testAssetManager = new TestAssetsManager(Path.Combine(RepoRoot, "TestAssets", "DesktopTestProjects"));
-            var testInstance = testAssetManager.CreateTestInstance("AppWithDirectDependencyDesktopAndPortable")
+            var testInstance = testAssetManager.CreateTestInstance("AppWithDirectDepDesktopAndPortable")
                 .WithLockFiles();
 
             var buildCommand = new BuildCommand(
@@ -52,7 +52,7 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
             var configuration = "Debug";
 
             var testAssetManager = new TestAssetsManager(Path.Combine(RepoRoot, "TestAssets", "DesktopTestProjects"));
-            var testInstance = testAssetManager.CreateTestInstance("AppWithDirectDependencyDesktopAndPortable")
+            var testInstance = testAssetManager.CreateTestInstance("AppWithDirectDepDesktopAndPortable")
                 .WithLockFiles();
 
             var buildCommand = new BuildCommand(
@@ -83,7 +83,7 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
             var configuration = "Release";
 
             var testAssetManager = new TestAssetsManager(Path.Combine(RepoRoot, "TestAssets", "DesktopTestProjects"));
-            var testInstance = testAssetManager.CreateTestInstance("AppWithDirectDependencyDesktopAndPortable")
+            var testInstance = testAssetManager.CreateTestInstance("AppWithDirectDepDesktopAndPortable")
                 .WithLockFiles();
 
             var buildCommand = new BuildCommand(
@@ -114,7 +114,7 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
             var configuration = "Release";
 
             var testAssetManager = new TestAssetsManager(Path.Combine(RepoRoot, "TestAssets", "DesktopTestProjects"));
-            var testInstance = testAssetManager.CreateTestInstance("AppWithDirectDependencyDesktopAndPortable")
+            var testInstance = testAssetManager.CreateTestInstance("AppWithDirectDepDesktopAndPortable")
                 .WithLockFiles();
 
             var buildCommand = new BuildCommand(
@@ -145,7 +145,7 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
             var configuration = "Debug";
 
             var testAssetManager = new TestAssetsManager(Path.Combine(RepoRoot, "TestAssets", "TestProjects"));
-            var testInstance = testAssetManager.CreateTestInstance("AppWithDirectDependencyWithOutputName")
+            var testInstance = testAssetManager.CreateTestInstance("AppWithDirectDepWithOutputName")
                 .WithLockFiles();
 
             var buildCommand = new BuildCommand(

test/Microsoft.DotNet.Cli.Utils.Tests/GivenAProjectDependencyCommandResolver.cs

@@ -12,11 +12,10 @@ using Xunit;
 
 namespace Microsoft.DotNet.Cli.Utils.Tests
 {
-    public class GivenAProjectDependenciesCommandResolver
+    public class GivenAProjectDependenciesCommandResolver : TestBase
     {
 
-        private static readonly string s_liveProjectDirectory =
+        private const string TestProjectName = "AppWithDirectDep";
-            Path.Combine(AppContext.BaseDirectory, "TestAssets/TestProjects/AppWithDirectDependency");
 
         [Fact]
         public void It_returns_null_when_CommandName_is_null()
@@ -61,11 +60,14 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
         {
             var projectDependenciesCommandResolver = SetupProjectDependenciesCommandResolver();
 
+            var testInstance = TestAssetsManager.CreateTestInstance(TestProjectName)
+                .WithLockFiles();
+
             var commandResolverArguments = new CommandResolverArguments()
             {
                 CommandName = "command",
                 CommandArguments = new string[] { "" },
-                ProjectDirectory = s_liveProjectDirectory,
+                ProjectDirectory = testInstance.Path,
                 Configuration = "Debug",
                 Framework = null
             };
@@ -80,11 +82,14 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
         {
             var projectDependenciesCommandResolver = SetupProjectDependenciesCommandResolver();
 
+            var testInstance = TestAssetsManager.CreateTestInstance(TestProjectName)
+                .WithLockFiles();
+
             var commandResolverArguments = new CommandResolverArguments()
             {
                 CommandName = "command",
                 CommandArguments = new string[] { "" },
-                ProjectDirectory = s_liveProjectDirectory,
+                ProjectDirectory = testInstance.Path,
                 Configuration = null,
                 Framework = FrameworkConstants.CommonFrameworks.NetCoreApp10
             };
@@ -99,11 +104,14 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
         {
             var projectDependenciesCommandResolver = SetupProjectDependenciesCommandResolver();
 
+            var testInstance = TestAssetsManager.CreateTestInstance(TestProjectName)
+                .WithLockFiles();
+
             var commandResolverArguments = new CommandResolverArguments()
             {
                 CommandName = "nonexistent-command",
                 CommandArguments = null,
-                ProjectDirectory = s_liveProjectDirectory,
+                ProjectDirectory = testInstance.Path,
                 Configuration = "Debug",
                 Framework = FrameworkConstants.CommonFrameworks.NetCoreApp10
             };
@@ -118,11 +126,15 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
         {
             var projectDependenciesCommandResolver = SetupProjectDependenciesCommandResolver();
 
+            var testInstance = TestAssetsManager.CreateTestInstance(TestProjectName)
+                .WithBuildArtifacts()
+                .WithLockFiles();
+
             var commandResolverArguments = new CommandResolverArguments()
             {
                 CommandName = "dotnet-hello",
                 CommandArguments = null,
-                ProjectDirectory = s_liveProjectDirectory,
+                ProjectDirectory = testInstance.Path,
                 Configuration = "Debug",
                 Framework = FrameworkConstants.CommonFrameworks.NetCoreApp10
             };
@@ -143,11 +155,15 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
         {
             var projectDependenciesCommandResolver = SetupProjectDependenciesCommandResolver();
 
+            var testInstance = TestAssetsManager.CreateTestInstance(TestProjectName)
+                .WithBuildArtifacts()
+                .WithLockFiles();
+
             var commandResolverArguments = new CommandResolverArguments()
             {
                 CommandName = "dotnet-hello",
                 CommandArguments = new[] { "arg with space" },
-                ProjectDirectory = s_liveProjectDirectory,
+                ProjectDirectory = testInstance.Path,
                 Configuration = "Debug",
                 Framework = FrameworkConstants.CommonFrameworks.NetCoreApp10
             };
@@ -159,15 +175,19 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
         }
 
         [Fact]
-        public void It_passes_depsfile_arg_to_host_when_returning_a_commandspec()
+        public void It_passes_depsfile_arg_to_host_when_returning_a_CommandSpec()
         {
             var projectDependenciesCommandResolver = SetupProjectDependenciesCommandResolver();
 
+            var testInstance = TestAssetsManager.CreateTestInstance(TestProjectName)
+                .WithBuildArtifacts()
+                .WithLockFiles();
+
             var commandResolverArguments = new CommandResolverArguments()
             {
                 CommandName = "dotnet-hello",
                 CommandArguments = null,
-                ProjectDirectory = s_liveProjectDirectory,
+                ProjectDirectory = testInstance.Path,
                 Configuration = "Debug",
                 Framework = FrameworkConstants.CommonFrameworks.NetCoreApp10
             };
@@ -182,26 +202,30 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
         public void It_sets_depsfile_in_output_path_in_commandspec()
         {
             var projectDependenciesCommandResolver = SetupProjectDependenciesCommandResolver();
-            var outputDir = Path.Combine(AppContext.BaseDirectory, "outdir");
+
+            var testInstance = TestAssetsManager.CreateTestInstance(TestProjectName)
+                .WithLockFiles();
+
+            var outputDir = Path.Combine(testInstance.Path, "outdir");
 
             var commandResolverArguments = new CommandResolverArguments
             {
                 CommandName = "dotnet-hello",
                 CommandArguments = null,
-                ProjectDirectory = s_liveProjectDirectory,
+                ProjectDirectory = testInstance.Path,
                 Configuration = "Debug",
                 Framework = FrameworkConstants.CommonFrameworks.NetCoreApp10,
                 OutputPath = outputDir
             };
 
             var buildCommand = new BuildCommand(
-                Path.Combine(s_liveProjectDirectory, "project.json"),
+                Path.Combine(testInstance.Path, "project.json"),
                 output: outputDir,
                 framework: FrameworkConstants.CommonFrameworks.NetCoreApp10.ToString())
                 .Execute().Should().Pass();
 
             var projectContext = ProjectContext.Create(
-                s_liveProjectDirectory,
+                testInstance.Path,
                 FrameworkConstants.CommonFrameworks.NetCoreApp10,
                 RuntimeEnvironmentRidExtensions.GetAllCandidateRuntimeIdentifiers());
 
@@ -218,26 +242,30 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
         public void It_sets_depsfile_in_build_base_path_in_commandspec()
         {
             var projectDependenciesCommandResolver = SetupProjectDependenciesCommandResolver();
-            var buildBasePath = Path.Combine(AppContext.BaseDirectory, "basedir");
+
+            var testInstance = TestAssetsManager.CreateTestInstance(TestProjectName)
+                .WithLockFiles();
+
+            var buildBasePath = Path.Combine(testInstance.Path, "basedir");
 
             var commandResolverArguments = new CommandResolverArguments
             {
                 CommandName = "dotnet-hello",
                 CommandArguments = null,
-                ProjectDirectory = s_liveProjectDirectory,
+                ProjectDirectory = testInstance.Path,
                 Configuration = "Debug",
                 Framework = FrameworkConstants.CommonFrameworks.NetCoreApp10,
                 BuildBasePath = buildBasePath
             };
 
             var buildCommand = new BuildCommand(
-                Path.Combine(s_liveProjectDirectory, "project.json"),
+                Path.Combine(testInstance.Path, "project.json"),
                 buildBasePath: buildBasePath,
                 framework: FrameworkConstants.CommonFrameworks.NetCoreApp10.ToString())
                 .Execute().Should().Pass();
 
             var projectContext = ProjectContext.Create(
-                s_liveProjectDirectory,
+                testInstance.Path,
                 FrameworkConstants.CommonFrameworks.NetCoreApp10,
                 RuntimeEnvironmentRidExtensions.GetAllCandidateRuntimeIdentifiers());
 
@@ -255,11 +283,15 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
         {
             var projectDependenciesCommandResolver = SetupProjectDependenciesCommandResolver();
 
+            var testInstance = TestAssetsManager.CreateTestInstance(TestProjectName)
+                .WithBuildArtifacts()
+                .WithLockFiles();
+
             var commandResolverArguments = new CommandResolverArguments()
             {
                 CommandName = "dotnet-hello",
                 CommandArguments = null,
-                ProjectDirectory = s_liveProjectDirectory,
+                ProjectDirectory = testInstance.Path,
                 Configuration = "Debug",
                 Framework = FrameworkConstants.CommonFrameworks.NetCoreApp10
             };

test/Microsoft.DotNet.Cli.Utils.Tests/GivenAProjectToolsCommandResolver.cs

@@ -7,6 +7,7 @@ using System.Linq;
 using FluentAssertions;
 using Microsoft.DotNet.ProjectModel;
 using Microsoft.DotNet.ProjectModel.Graph;
+using Microsoft.DotNet.TestFramework;
 using Microsoft.DotNet.Tools.Test.Utilities;
 using NuGet.Frameworks;
 using NuGet.Versioning;
@@ -14,12 +15,11 @@ using Xunit;
 
 namespace Microsoft.DotNet.Cli.Utils.Tests
 {
-    public class GivenAProjectToolsCommandResolver
+    public class GivenAProjectToolsCommandResolver : TestBase
     {
         private static readonly NuGetFramework s_toolPackageFramework = FrameworkConstants.CommonFrameworks.NetCoreApp10;
 
-        private static readonly string s_liveProjectDirectory =
+        private const string TestProjectName = "AppWithToolDependency";
-            Path.Combine(AppContext.BaseDirectory, "TestAssets/TestProjects/AppWithToolDependency");
 
         [Fact]
         public void It_returns_null_when_CommandName_is_null()
@@ -60,11 +60,14 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
         {
             var projectToolsCommandResolver = SetupProjectToolsCommandResolver();
 
+            var testInstance = TestAssetsManager.CreateTestInstance(TestProjectName)
+                .WithLockFiles();
+
             var commandResolverArguments = new CommandResolverArguments()
             {
                 CommandName = "nonexistent-command",
                 CommandArguments = null,
-                ProjectDirectory = s_liveProjectDirectory
+                ProjectDirectory = testInstance.Path
             };
 
             var result = projectToolsCommandResolver.Resolve(commandResolverArguments);
@@ -77,11 +80,14 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
         {
             var projectToolsCommandResolver = SetupProjectToolsCommandResolver();
 
+            var testInstance = TestAssetsManager.CreateTestInstance(TestProjectName)
+                .WithLockFiles();
+
             var commandResolverArguments = new CommandResolverArguments()
             {
                 CommandName = "dotnet-portable",
                 CommandArguments = null,
-                ProjectDirectory = s_liveProjectDirectory
+                ProjectDirectory = testInstance.Path
             };
 
             var result = projectToolsCommandResolver.Resolve(commandResolverArguments);
@@ -100,11 +106,14 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
         {
             var projectToolsCommandResolver = SetupProjectToolsCommandResolver();
 
+            var testInstance = TestAssetsManager.CreateTestInstance(TestProjectName)
+                .WithLockFiles();
+
             var commandResolverArguments = new CommandResolverArguments()
             {
                 CommandName = "dotnet-portable",
                 CommandArguments = new[] { "arg with space" },
-                ProjectDirectory = s_liveProjectDirectory
+                ProjectDirectory = testInstance.Path
             };
 
             var result = projectToolsCommandResolver.Resolve(commandResolverArguments);
@@ -118,11 +127,14 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
         {
             var projectToolsCommandResolver = SetupProjectToolsCommandResolver();
 
+            var testInstance = TestAssetsManager.CreateTestInstance(TestProjectName)
+                .WithLockFiles();
+
             var commandResolverArguments = new CommandResolverArguments()
             {
                 CommandName = "dotnet-portable",
                 CommandArguments = null,
-                ProjectDirectory = s_liveProjectDirectory
+                ProjectDirectory = testInstance.Path
             };
 
             var result = projectToolsCommandResolver.Resolve(commandResolverArguments);
@@ -138,14 +150,17 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
         {
             var projectToolsCommandResolver = SetupProjectToolsCommandResolver();
 
+            var testInstance = TestAssetsManager.CreateTestInstance(TestProjectName)
+                .WithLockFiles();
+
             var commandResolverArguments = new CommandResolverArguments()
             {
                 CommandName = "dotnet-portable",
                 CommandArguments = null,
-                ProjectDirectory = s_liveProjectDirectory
+                ProjectDirectory = testInstance.Path
             };
 
-            var context = ProjectContext.Create(Path.Combine(s_liveProjectDirectory, "project.json"), s_toolPackageFramework);
+            var context = ProjectContext.Create(Path.Combine(testInstance.Path, "project.json"), s_toolPackageFramework);
 
             var nugetPackagesRoot = context.PackagesDirectory;
             var toolPathCalculator = new ToolPathCalculator(nugetPackagesRoot);
@@ -180,7 +195,10 @@ namespace Microsoft.DotNet.Cli.Utils.Tests
         [Fact]
         public void Generate_deps_json_method_doesnt_overwrite_when_deps_file_already_exists()
         {
-            var context = ProjectContext.Create(Path.Combine(s_liveProjectDirectory, "project.json"), s_toolPackageFramework);
+            var testInstance = TestAssetsManager.CreateTestInstance(TestProjectName)
+                .WithLockFiles();
+
+            var context = ProjectContext.Create(Path.Combine(testInstance.Path, "project.json"), s_toolPackageFramework);
 
             var nugetPackagesRoot = context.PackagesDirectory;
             var toolPathCalculator = new ToolPathCalculator(nugetPackagesRoot);

test/Microsoft.DotNet.Cli.Utils.Tests/StreamForwarderTests.cs

@@ -14,20 +14,12 @@ namespace StreamForwarderTests
     public class StreamForwarderTests : TestBase
     {
         private static readonly string s_rid = RuntimeEnvironmentRidExtensions.GetLegacyRestoreRuntimeIdentifier();
-        private static readonly string s_testProjectRoot = Path.Combine(AppContext.BaseDirectory, "TestAssets", "TestProjects");
-
-        private TempDirectory _root;
 
         public static void Main()
         {
             Console.WriteLine("Dummy Entrypoint");
         }
 
-        public StreamForwarderTests()
-        {
-            _root = Temp.CreateDirectory();
-        }
-
         public static IEnumerable<object[]> ForwardingTheoryVariations
         {
             get
@@ -127,15 +119,15 @@ namespace StreamForwarderTests
 
         private string SetupTestProject()
         {
-            var sourceTestProjectPath = Path.Combine(s_testProjectRoot, "OutputStandardOutputAndError");
 
-            var binTestProjectPath = _root.CopyDirectory(sourceTestProjectPath).Path;
+            var testInstance = TestAssetsManager.CreateTestInstance("OutputStandardOutputAndError")
+                .WithLockFiles();
 
-            var buildCommand = new BuildCommand(Path.Combine(binTestProjectPath, "project.json"));
+            var buildCommand = new BuildCommand(Path.Combine(testInstance.Path, "project.json"));
             buildCommand.Execute();
 
             var buildOutputExe = "OutputStandardOutputAndError" + Constants.ExeSuffix;
-            var buildOutputPath = Path.Combine(binTestProjectPath, "bin/Debug/netcoreapp1.0", buildOutputExe);
+            var buildOutputPath = Path.Combine(testInstance.Path, "bin/Debug/netcoreapp1.0", buildOutputExe);
 
             return buildOutputPath;
         }

test/Microsoft.DotNet.ProjectModel.Tests/LibraryExporterTests.cs

@@ -7,24 +7,18 @@ namespace Microsoft.DotNet.ProjectModel.Tests
 {
     public class LibraryExporterTests : TestBase
     {
-        private readonly string _testProjectsRoot;
-
-        public LibraryExporterTests()
-        {
-            _testProjectsRoot = Path.Combine(AppContext.BaseDirectory, "TestAssets", "TestProjects");
-        }
-
         [Fact]
         public void GetLibraryExportsWithoutLockFile()
         {
-            var root = Temp.CreateDirectory().CopyDirectory(Path.Combine(_testProjectsRoot, "TestAppWithLibrary"));
 
-            foreach (var lockfile in Directory.GetFiles(root.Path, "project.lock.json"))
+            var testInstance = TestAssetsManager.CreateTestInstance("TestAppWithLibrary");
+
+            foreach (var lockfile in Directory.GetFiles(testInstance.Path, "project.lock.json"))
             {
                 File.Delete(lockfile);
             }
 
-            var builder = new ProjectContextBuilder().WithProjectDirectory(Path.Combine(root.Path, "TestApp"));
+            var builder = new ProjectContextBuilder().WithProjectDirectory(Path.Combine(testInstance.Path, "TestApp"));
 
             foreach (var context in builder.BuildAllTargets())
             {

test/dotnet-compile.Tests/CompilerTests.cs

@@ -13,28 +13,18 @@ namespace Microsoft.DotNet.Tools.Compiler.Tests
 {
     public class CompilerTests : TestBase
     {
-        private readonly string _testProjectsRoot;
-
-        public CompilerTests()
-        {
-            _testProjectsRoot = Path.Combine(AppContext.BaseDirectory, "TestAssets", "TestProjects");
-        }
-
         [Fact]
         public void XmlDocumentationFileIsGenerated()
         {
-            // create unique directories in the 'temp' folder
+            var testInstance = TestAssetsManager
-            var root = Temp.CreateDirectory();
+                .CreateTestInstance("TestAppWithLibrary")
-            root.CopyFile(Path.Combine(_testProjectsRoot, "global.json"));
+                .WithLockFiles();
 
-            var testLibDir = root.CreateDirectory("TestLibrary");
+            var testLibDir = Path.Combine(testInstance.TestRoot, "TestLibrary");
-            var sourceTestLibDir = Path.Combine(_testProjectsRoot, "TestAppWithLibrary", "TestLibrary");
-
-            CopyProjectToTempDir(sourceTestLibDir, testLibDir);
 
             // run compile
-            var outputDir = Path.Combine(testLibDir.Path, "bin");
+            var outputDir = Path.Combine(testLibDir, "bin");
-            var testProject = GetProjectPath(testLibDir);
+            var testProject = Path.Combine(testLibDir, "project.json");
             var buildCommand = new BuildCommand(testProject, output: outputDir, framework: DefaultLibraryFramework);
             var result = buildCommand.ExecuteWithCapturedOutput();
             result.Should().Pass();
@@ -49,16 +39,15 @@ namespace Microsoft.DotNet.Tools.Compiler.Tests
         [Fact]
         public void SatelliteAssemblyIsGeneratedByDotnetBuild()
         {
-            // create unique directories in the 'temp' folder
+            var testInstance = TestAssetsManager
-            var root = Temp.CreateDirectory();
+                .CreateTestInstance("TestProjectWithCultureSpecificResource")
-            var testLibDir = root.CreateDirectory("TestProjectWithCultureSpecificResource");
+                .WithLockFiles();
-            var sourceTestLibDir = Path.Combine(_testProjectsRoot, "TestProjectWithCultureSpecificResource");
 
-            CopyProjectToTempDir(sourceTestLibDir, testLibDir);
+            var testLibDir = testInstance.TestRoot;
 
             // run compile on a project with resources
-            var outputDir = Path.Combine(testLibDir.Path, "bin");
+            var outputDir = Path.Combine(testLibDir, "bin");
-            var testProject = GetProjectPath(testLibDir);
+            var testProject = Path.Combine(testLibDir, "project.json");
             var buildCmd = new BuildCommand(testProject, output: outputDir, framework: DefaultFramework);
             var result = buildCmd.ExecuteWithCapturedOutput();
             result.Should().Pass();
@@ -75,15 +64,15 @@ namespace Microsoft.DotNet.Tools.Compiler.Tests
         [Fact]
         public void LibraryWithAnalyzer()
         {
-            var root = Temp.CreateDirectory();
+            var testInstance = TestAssetsManager
-            var testLibDir = root.CreateDirectory("TestLibraryWithAnalyzer");
+                .CreateTestInstance("TestLibraryWithAnalyzer")
-            var sourceTestLibDir = Path.Combine(_testProjectsRoot, "TestLibraryWithAnalyzer");
+                .WithLockFiles();
 
-            CopyProjectToTempDir(sourceTestLibDir, testLibDir);
+            var testLibDir = testInstance.TestRoot;
 
             // run compile
-            var outputDir = Path.Combine(testLibDir.Path, "bin");
+            var outputDir = Path.Combine(testLibDir, "bin");
-            var testProject = GetProjectPath(testLibDir);
+            var testProject = Path.Combine(testLibDir, "project.json");
             var buildCmd = new BuildCommand(testProject, output: outputDir, framework: DefaultLibraryFramework);
             var result = buildCmd.ExecuteWithCapturedOutput();
             result.Should().Pass();
@@ -96,12 +85,15 @@ namespace Microsoft.DotNet.Tools.Compiler.Tests
         {
             var root = Temp.CreateDirectory();
 
-            var spaceBufferDirectory = root.CreateDirectory("space directory");
+            var testInstance = TestAssetsManager
-            var testAppDir = spaceBufferDirectory.CreateDirectory("TestAppCompilationContext");
+                .CreateTestInstance("TestAppCompilationContext", identifier: "A SPACE")
+                .WithLockFiles();
 
-            CopyProjectToTempDir(Path.Combine(_testProjectsRoot, "TestAppCompilationContext"), testAppDir);
+            var testProjectDir = Path.Combine(
+                    Directory.GetParent(testInstance.TestRoot).FullName, 
+                    "TestAppCompilationContext", 
+                    "TestApp");
 
-            var testProjectDir = Path.Combine(_testProjectsRoot, "TestAppCompilationContext", "TestApp");
             var testProject = Path.Combine(testProjectDir, "project.json");
 
             var buildCommand = new BuildCommand(testProject);

test/dotnet-pack.Tests/PackTests.cs

@@ -17,49 +17,41 @@ namespace Microsoft.DotNet.Tools.Compiler.Tests
     {
         private readonly string _testProjectsRoot;
 
-        public PackTests()
-        {
-            _testProjectsRoot = Path.Combine(AppContext.BaseDirectory, "TestAssets", "TestProjects");
-        }
-
         [Fact]
         public void OutputsPackagesToConfigurationSubdirWhenOutputParameterIsNotPassed()
         {
-            var root = Temp.CreateDirectory();
+            var testInstance = TestAssetsManager
+                .CreateTestInstance("TestLibraryWithConfiguration")
+                .WithBuildArtifacts()
+                .WithLockFiles();
 
-            var testLibDir = root.CreateDirectory("TestLibrary");
+            var testProject = Path.Combine(testInstance.Path, "project.json");
-            var sourceTestLibDir = Path.Combine(_testProjectsRoot, "TestLibraryWithConfiguration");
-
-            CopyProjectToTempDir(sourceTestLibDir, testLibDir);
-
-            var testProject = GetProjectPath(testLibDir);
             var packCommand = new PackCommand(testProject, configuration: "Test");
             var result = packCommand.Execute();
             result.Should().Pass();
 
-            var outputDir = new DirectoryInfo(Path.Combine(testLibDir.Path, "bin", "Test"));
+            var outputDir = new DirectoryInfo(Path.Combine(testInstance.Path, "bin", "Test"));
             outputDir.Should().Exist();
-            outputDir.Should().HaveFiles(new [] { "TestLibrary.1.0.0.nupkg" , "TestLibrary.1.0.0.symbols.nupkg" });
+            outputDir.Should().HaveFiles(new [] { "TestLibraryWithConfiguration.1.0.0.nupkg" , "TestLibraryWithConfiguration.1.0.0.symbols.nupkg" });
         }
 
         [Fact]
         public void OutputsPackagesFlatIntoOutputDirWhenOutputParameterIsPassed()
         {
-            var root = Temp.CreateDirectory();
+            var testInstance = TestAssetsManager
+                .CreateTestInstance("TestLibraryWithConfiguration")
+                .WithBuildArtifacts()
+                .WithLockFiles();
 
-            var testLibDir = root.CreateDirectory("TestLibrary");
+            var testProject = Path.Combine(testInstance.Path, "project.json");
-            var sourceTestLibDir = Path.Combine(_testProjectsRoot, "TestLibraryWithConfiguration");
 
-            CopyProjectToTempDir(sourceTestLibDir, testLibDir);
+            var outputDir = new DirectoryInfo(Path.Combine(testInstance.Path, "bin2"));
-
-            var outputDir = new DirectoryInfo(Path.Combine(testLibDir.Path, "bin2"));
-            var testProject = GetProjectPath(testLibDir);
             var packCommand = new PackCommand(testProject, output: outputDir.FullName);
             var result = packCommand.Execute();
             result.Should().Pass();
 
             outputDir.Should().Exist();
-            outputDir.Should().HaveFiles(new[] { "TestLibrary.1.0.0.nupkg", "TestLibrary.1.0.0.symbols.nupkg" });
+            outputDir.Should().HaveFiles(new[] { "TestLibraryWithConfiguration.1.0.0.nupkg", "TestLibraryWithConfiguration.1.0.0.symbols.nupkg" });
         }
 
         [Fact]
@@ -100,7 +92,8 @@ namespace Microsoft.DotNet.Tools.Compiler.Tests
         [Fact]
         public void HasIncludedFiles()
         {
-            var testInstance = TestAssetsManager.CreateTestInstance("EndToEndTestApp")
+            var testInstance = TestAssetsManager
+                .CreateTestInstance("EndToEndTestApp")
                 .WithLockFiles()
                 .WithBuildArtifacts();
 
@@ -156,27 +149,25 @@ namespace Microsoft.DotNet.Tools.Compiler.Tests
         [Fact]
         public void HasServiceableFlagWhenArgumentPassed()
         {
-            var root = Temp.CreateDirectory();
+            var testInstance = TestAssetsManager
+                .CreateTestInstance("TestLibraryWithConfiguration")
+                .WithBuildArtifacts()
+                .WithLockFiles();
 
-            var testLibDir = root.CreateDirectory("TestLibrary");
+            var testProject = Path.Combine(testInstance.Path, "project.json");
-            var sourceTestLibDir = Path.Combine(_testProjectsRoot, "TestLibraryWithConfiguration");
-
-            CopyProjectToTempDir(sourceTestLibDir, testLibDir);
-
-            var testProject = GetProjectPath(testLibDir);
             var packCommand = new PackCommand(testProject, configuration: "Debug", serviceable: true);
             var result = packCommand.Execute();
             result.Should().Pass();
 
-            var outputDir = new DirectoryInfo(Path.Combine(testLibDir.Path, "bin", "Debug"));
+            var outputDir = new DirectoryInfo(Path.Combine(testInstance.Path, "bin", "Debug"));
             outputDir.Should().Exist();
-            outputDir.Should().HaveFiles(new[] { "TestLibrary.1.0.0.nupkg", "TestLibrary.1.0.0.symbols.nupkg" });
+            outputDir.Should().HaveFiles(new[] { "TestLibraryWithConfiguration.1.0.0.nupkg", "TestLibraryWithConfiguration.1.0.0.symbols.nupkg" });
 
-            var outputPackage = Path.Combine(outputDir.FullName, "TestLibrary.1.0.0.nupkg");
+            var outputPackage = Path.Combine(outputDir.FullName, "TestLibraryWithConfiguration.1.0.0.nupkg");
             var zip = ZipFile.Open(outputPackage, ZipArchiveMode.Read);
-            zip.Entries.Should().Contain(e => e.FullName == "TestLibrary.nuspec");
+            zip.Entries.Should().Contain(e => e.FullName == "TestLibraryWithConfiguration.nuspec");
 
-            var manifestReader = new StreamReader(zip.Entries.First(e => e.FullName == "TestLibrary.nuspec").Open());
+            var manifestReader = new StreamReader(zip.Entries.First(e => e.FullName == "TestLibraryWithConfiguration.nuspec").Open());
             var nuspecXml = XDocument.Parse(manifestReader.ReadToEnd());
             var node = nuspecXml.Descendants().Single(e => e.Name.LocalName == "serviceable");
             Assert.Equal("true", node.Value);

test/dotnet-publish.Tests/PublishAppWithBuildDependency.cs

@@ -14,7 +14,7 @@ namespace Microsoft.DotNet.Tools.Publish.Tests
         [Fact]
         public void PublishExcludesBuildDependencies()
         {
-            var testInstance = TestAssetsManager.CreateTestInstance("AppWithDirectDependencyAndTypeBuild")
+            var testInstance = TestAssetsManager.CreateTestInstance("AppWithDirectDepAndTypeBuild")
                 .WithLockFiles();
 
             var publishCommand = new PublishCommand(testInstance.TestRoot);
@@ -37,7 +37,7 @@ namespace Microsoft.DotNet.Tools.Publish.Tests
             // Check the deps file
             var reader = new DependencyContextJsonReader();
             DependencyContext context;
-            using (var file = File.OpenRead(Path.Combine(publishDir.FullName, "AppWithDirectDependencyAndTypeBuild.deps.json")))
+            using (var file = File.OpenRead(Path.Combine(publishDir.FullName, "AppWithDirectDepAndTypeBuild.deps.json")))
             {
                 context = reader.Read(file);
             }

test/dotnet-publish.Tests/PublishTests.cs

@@ -14,14 +14,8 @@ namespace Microsoft.DotNet.Tools.Publish.Tests
 {
     public class PublishTests : TestBase
     {
-        private readonly string _testProjectsRoot;
         private readonly Func<string, string, string> _getProjectJson = ProjectUtils.GetProjectJson;
 
-        public PublishTests()
-        {
-            _testProjectsRoot = Path.Combine(RepoRoot, "TestAssets", "TestProjects");
-        }
-
         private static readonly dynamic[] CrossPublishTestData = new[]
         {
             new 

test/dotnet-resgen.Tests/Microsoft.DotNet.Tools.Resgen.Tests.cs

@@ -12,24 +12,16 @@ namespace Microsoft.DotNet.Tools.Resgen.Tests
 {
     public class ResgenTests : TestBase
     {
-        private readonly string _testProjectsRoot;
-        private readonly TempDirectory _root;
-
-        public ResgenTests()
-        {
-            _testProjectsRoot = Path.Combine(AppContext.BaseDirectory, "TestAssets", "TestProjects");
-            _root = Temp.CreateDirectory();
-        }
-
         [Fact]
         public void Test_Build_Project_with_Resources_with_Space_in_Path_Should_Succeed()
         {
-            var spaceBufferDirectory = _root.CreateDirectory("space directory");
+            var testInstance = TestAssetsManager
-            var testAppDir = spaceBufferDirectory.CreateDirectory("TestProjectWithResource");
+                .CreateTestInstance("TestProjectWithResource", identifier: "A SPACE")
+                .WithBuildArtifacts()
+                .WithLockFiles();
 
-            CopyProjectToTempDir(Path.Combine(_testProjectsRoot, "TestProjectWithResource"), testAppDir);
+            var testProject = Path.Combine(testInstance.Path, "project.json");
             
-            var testProject = GetProjectPath(testAppDir);
             var buildCommand = new BuildCommand(testProject);
 
             buildCommand.Execute().Should().Pass();

test/dotnet.Tests/PackagedCommandTests.cs

@@ -7,6 +7,7 @@ using System.IO;
 using System.Runtime.InteropServices;
 using FluentAssertions;
 using Microsoft.DotNet.Cli.Utils;
+using Microsoft.DotNet.TestFramework;
 using Microsoft.DotNet.Tools.Test.Utilities;
 using Microsoft.DotNet.InternalAbstractions;
 using Xunit;
@@ -15,19 +16,18 @@ namespace Microsoft.DotNet.Tests
 {
     public class PackagedCommandTests : TestBase
     {
-        private readonly string _testProjectsRoot;
+        private readonly TestAssetsManager _desktopTestAssetsManager = GetTestGroupTestAssetsManager("DesktopTestProjects");
-        private readonly string _desktopTestProjectsRoot;
 
         public static IEnumerable<object[]> DependencyToolArguments
         {
             get
             {
                 var rid = RuntimeEnvironmentRidExtensions.GetLegacyRestoreRuntimeIdentifier();
-                var projectOutputPath = $"AppWithDirectDependencyDesktopAndPortable\\bin\\Debug\\net451\\{rid}\\dotnet-desktop-and-portable.exe";
+                var projectOutputPath = $"AppWithDirectDepDesktopAndPortable\\bin\\Debug\\net451\\{rid}\\dotnet-desktop-and-portable.exe";
                 return new[]
                 {
-                    new object[] { ".NETCoreApp,Version=v1.0", "CoreFX", "lib\\netcoreapp1.0\\dotnet-desktop-and-portable.dll", true },
+                    new object[] { "CoreFX", ".NETCoreApp,Version=v1.0", "lib\\netcoreapp1.0\\dotnet-desktop-and-portable.dll", true },
-                    new object[] { ".NETFramework,Version=v4.5.1", "NetFX", projectOutputPath, true }
+                    new object[] { "NetFX", ".NETFramework,Version=v4.5.1", projectOutputPath, true }
                 };
             }
         }
@@ -40,24 +40,22 @@ namespace Microsoft.DotNet.Tests
                 var projectOutputPath = $"LibraryWithDirectDependencyDesktopAndPortable\\bin\\Debug\\net451\\dotnet-desktop-and-portable.exe";
                 return new[]
                 {
-                    new object[] { ".NETStandard,Version=v1.6", "CoreFX", "lib\\netstandard1.6\\dotnet-desktop-and-portable.dll", true },
+                    new object[] { "CoreFX", ".NETStandard,Version=v1.6", "lib\\netstandard1.6\\dotnet-desktop-and-portable.dll", true },
-                    new object[] { ".NETFramework,Version=v4.5.1", "NetFX", projectOutputPath, true }
+                    new object[] { "NetFX", ".NETFramework,Version=v4.5.1", projectOutputPath, true }
                 };
             }
         }
 
-        public PackagedCommandTests()
-        {
-            _testProjectsRoot = Path.Combine(AppContext.BaseDirectory, "TestAssets", "TestProjects");
-            _desktopTestProjectsRoot = Path.Combine(AppContext.BaseDirectory, "TestAssets", "DesktopTestProjects");
-        }
-
         [Theory]
-        [InlineData("AppWithDirectAndToolDependency")]
+        [InlineData("AppWithDirectAndToolDep")]
         [InlineData("AppWithToolDependency")]
         public void TestProjectToolIsAvailableThroughDriver(string appName)
         {
-            var appDirectory = Path.Combine(_testProjectsRoot, appName);
+            var testInstance = TestAssetsManager
+                .CreateTestInstance(appName, identifier: appName)
+                .WithLockFiles();
+
+            var appDirectory = testInstance.Path;
 
             new BuildCommand(Path.Combine(appDirectory, "project.json"))
                 .Execute()
@@ -75,7 +73,11 @@ namespace Microsoft.DotNet.Tests
         [Fact]
         public void CanInvokeToolWhosePackageNameIsDifferentFromDllName()
         {
-            var appDirectory = Path.Combine(_testProjectsRoot, "AppWithDependencyOnToolWithOutputName");
+            var testInstance = TestAssetsManager
+                .CreateTestInstance("AppWithDepOnToolWithOutputName")
+                .WithLockFiles();
+
+            var appDirectory = testInstance.Path;
 
             new BuildCommand(Path.Combine(appDirectory, "project.json"))
                 .Execute()
@@ -93,7 +95,12 @@ namespace Microsoft.DotNet.Tests
         [Fact]
         public void CanInvokeToolFromDirectDependenciesIfPackageNameDifferentFromToolName()
         {
-            var appDirectory = Path.Combine(_testProjectsRoot, "AppWithDirectDependencyWithOutputName");
+            var testInstance = TestAssetsManager
+                .CreateTestInstance("AppWithDirectDepWithOutputName")
+                .WithBuildArtifacts()
+                .WithLockFiles();
+
+            var appDirectory = testInstance.Path;
             const string framework = ".NETCoreApp,Version=v1.0";
 
             new BuildCommand(Path.Combine(appDirectory, "project.json"))
@@ -112,14 +119,19 @@ namespace Microsoft.DotNet.Tests
         // need conditional theories so we can skip on non-Windows
         [Theory]
         [MemberData("DependencyToolArguments")]
-        public void TestFrameworkSpecificDependencyToolsCanBeInvoked(string framework, string args, string expectedDependencyToolPath, bool windowsOnly)
+        public void TestFrameworkSpecificDependencyToolsCanBeInvoked(string identifier, string framework, string expectedDependencyToolPath, bool windowsOnly)
         {
             if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows) && windowsOnly)
             {
                 return;
             }
 
-            var appDirectory = Path.Combine(_desktopTestProjectsRoot, "AppWithDirectDependencyDesktopAndPortable");
+            var testInstance = _desktopTestAssetsManager
+                .CreateTestInstance("AppWithDirectDepDesktopAndPortable", identifier: identifier)
+                .WithBuildArtifacts()
+                .WithLockFiles();
+
+            var appDirectory = testInstance.Path;
 
             new BuildCommand(Path.Combine(appDirectory, "project.json"))
                 .Execute()
@@ -127,10 +139,10 @@ namespace Microsoft.DotNet.Tests
                 .Pass();
 
             CommandResult result = new DependencyToolInvokerCommand { WorkingDirectory = appDirectory }
-                    .ExecuteWithCapturedOutput("desktop-and-portable", framework, args);
+                    .ExecuteWithCapturedOutput("desktop-and-portable", framework, identifier);
 
             result.Should().HaveStdOutContaining(framework);
-            result.Should().HaveStdOutContaining(args);
+            result.Should().HaveStdOutContaining(identifier);
             result.Should().HaveStdOutContaining(expectedDependencyToolPath);
             result.Should().NotHaveStdErr();
             result.Should().Pass();
@@ -138,14 +150,18 @@ namespace Microsoft.DotNet.Tests
 
         [Theory]
         [MemberData("LibraryDependencyToolArguments")]
-        public void TestFrameworkSpecificLibraryDependencyToolsCannotBeInvoked(string framework, string args, string expectedDependencyToolPath, bool windowsOnly)
+        public void TestFrameworkSpecificLibraryDependencyToolsCannotBeInvoked(string identifier, string framework, string expectedDependencyToolPath, bool windowsOnly)
         {
             if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows) && windowsOnly)
             {
                 return;
             }
             
-            var appDirectory = Path.Combine(_desktopTestProjectsRoot, "LibraryWithDirectDependencyDesktopAndPortable");
+            var testInstance = _desktopTestAssetsManager
+                .CreateTestInstance("LibraryWithDirectDependencyDesktopAndPortable", identifier: identifier)
+                .WithLockFiles();
+
+            var appDirectory = testInstance.Path;
 
             new BuildCommand(Path.Combine(appDirectory, "project.json"))
                 .Execute()
@@ -153,7 +169,7 @@ namespace Microsoft.DotNet.Tests
                 .Pass();
 
             CommandResult result = new DependencyToolInvokerCommand { WorkingDirectory = appDirectory }
-                    .ExecuteWithCapturedOutput("desktop-and-portable", framework, args);
+                    .ExecuteWithCapturedOutput("desktop-and-portable", framework, identifier);
 
             result.Should().HaveStdOutContaining("Command not found");
             result.Should().Fail();
@@ -162,7 +178,9 @@ namespace Microsoft.DotNet.Tests
         [Fact]
         public void ToolsCanAccessDependencyContextProperly()
         {
-            var appDirectory = Path.Combine(_testProjectsRoot, "DependencyContextFromTool");
+            var testInstance = TestAssetsManager.CreateTestInstance("DependencyContextFromTool");
+
+            var appDirectory = testInstance.Path;
 
             CommandResult result = new DependencyContextTestCommand() { WorkingDirectory = appDirectory }
                 .Execute(Path.Combine(appDirectory, "project.json"));
@@ -173,8 +191,11 @@ namespace Microsoft.DotNet.Tests
         [Fact]
         public void TestProjectDependencyIsNotAvailableThroughDriver()
         {
-            var appName = "AppWithDirectDependency";
+            var testInstance = TestAssetsManager
-            var appDirectory = Path.Combine(_testProjectsRoot, appName);
+                .CreateTestInstance("AppWithDirectDep")
+                .WithLockFiles();
+
+            var appDirectory = testInstance.Path;
 
             new BuildCommand(Path.Combine(appDirectory, "project.json"))
                 .Execute()