abort build when an unresolved dependency is found (#2696)

TestAssets/NonRestoredTestProjects/TestProjectWithUnresolvedDependency/Program.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace ConsoleApplication
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            Console.WriteLine("Hello World!");
+        }
+    }
+}

TestAssets/NonRestoredTestProjects/TestProjectWithUnresolvedDependency/project.json

@@ -0,0 +1,18 @@
+{
+  "version": "1.0.0-*",
+  "compilationOptions": {
+    "emitEntryPoint": true
+  },
+  "dependencies": {
+    "Microsoft.NETCore.App": {
+      "type": "platform",
+      "version": "1.0.0-rc2-*"
+    },
+    "ThisIsNotARealDependencyAndIfSomeoneGoesAndAddsAProjectWithThisNameIWillFindThemAndPunishThem": { "target": "project" }
+  },
+  "frameworks": {
+    "netcoreapp1.0": {
+      "imports": "dnxcore50"
+    }
+  }
+}

TestAssets/TestProjects/TestAppWithBuildDependency/App/Program.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace ConsoleApplication
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            Console.WriteLine("Hello World!");
+        }
+    }
+}

TestAssets/TestProjects/TestAppWithBuildDependency/App/project.json

@@ -0,0 +1,18 @@
+{
+  "version": "1.0.0-*",
+  "compilationOptions": {
+    "emitEntryPoint": true
+  },
+  "dependencies": {
+    "Microsoft.NETCore.App": {
+      "type": "platform",
+      "version": "1.0.0-rc2-3002498"
+    },
+    "LibraryWithBuildDependency": { "target": "project" }
+  },
+  "frameworks": {
+    "netcoreapp1.0": {
+      "imports": "dnxcore50"
+    }
+  }
+}

TestAssets/TestProjects/TestAppWithBuildDependency/LibraryWithBuildDependency/Program.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace ConsoleApplication
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            Console.WriteLine("Hello World!");
+        }
+    }
+}

TestAssets/TestProjects/TestAppWithBuildDependency/LibraryWithBuildDependency/project.json

@@ -0,0 +1,18 @@
+{
+  "version": "1.0.0-*",
+  "dependencies": {
+    "Microsoft.NETCore.App": {
+      "type": "platform",
+      "version": "1.0.0-rc2-3002498"
+    },
+    "Microsoft.Net.Compilers": {
+      "type": "build",
+      "version": "1.1.1"
+    }
+  },
+  "frameworks": {
+    "netcoreapp1.0": {
+      "imports": "dnxcore50"
+    }
+  }
+}

src/Microsoft.DotNet.TestFramework/Microsoft.DotNet.TestFramework.TestInstance.cs

@@ -19,6 +19,7 @@ namespace Microsoft.DotNet.TestFramework
 
         internal TestInstance(string testAssetRoot, string testDestination)
         {
+            Console.WriteLine($"Copying {testAssetRoot} to {testDestination}");
             if (string.IsNullOrEmpty(testAssetRoot))
             {
                 throw new ArgumentException("testScenario");

src/dotnet/commands/dotnet-build/DotnetProjectBuilder.cs

@@ -137,8 +137,11 @@ namespace Microsoft.DotNet.Tools.Build
 
                 var success = managedCompiler.Compile(projectNode.ProjectContext, _args);
                 if (projectNode.IsRoot)
+                {
+                    if (success)
                     {
                         MakeRunnable(projectNode);
+                    }
                     PrintSummary(projectNode, success);
                 }
 

src/dotnet/commands/dotnet-build/ProjectGraphCollector.cs

@@ -45,7 +45,7 @@ namespace Microsoft.DotNet.Tools.Build
                     LibraryDescription libraryDescription;
                     if (lookup.TryGetValue(dependency.Name, out libraryDescription))
                     {
-                        if (libraryDescription.Identity.Type.Equals(LibraryType.Project))
+                        if (libraryDescription.Resolved && libraryDescription.Identity.Type.Equals(LibraryType.Project))
                         {
                             deps.Add(TraverseProject((ProjectDescription)libraryDescription, lookup));
                         }

src/dotnet/commands/dotnet-compile/ManagedCompiler.cs

@@ -63,11 +63,10 @@ namespace Microsoft.DotNet.Tools.Compiler
                 diagnostics.Add(diag);
             }
 
-            if (missingFrameworkDiagnostics.Count > 0)
+            if(diagnostics.Any(d => d.Severity == DiagnosticMessageSeverity.Error))
             {
-                // The framework isn't installed so we should short circuit the rest of the compilation
+                // We got an unresolved dependency or missing framework. Don't continue the compilation.
-                // so we don't get flooded with errors
+                PrintSummary(diagnostics, sw);
-                PrintSummary(missingFrameworkDiagnostics, sw);
                 return false;
             }
 

test/dotnet-build.Tests/BuildOutputTests.cs

@@ -214,6 +214,27 @@ namespace Microsoft.DotNet.Tools.Builder.Tests
             }
         }
 
+        [Fact]
+        public void UnresolvedReferenceCausesBuildToFailAndNotProduceOutput()
+        {
+            var testAssetsManager = GetTestGroupTestAssetsManager("NonRestoredTestProjects");
+            var testInstance = testAssetsManager.CreateTestInstance("TestProjectWithUnresolvedDependency")
+                                                .WithLockFiles();
+
+            var restoreResult = new RestoreCommand() { WorkingDirectory = testInstance.TestRoot }.Execute();
+            restoreResult.Should().Fail();
+            new DirectoryInfo(testInstance.TestRoot).Should().HaveFile("project.lock.json");
+
+            var buildCmd = new BuildCommand(testInstance.TestRoot);
+            var buildResult = buildCmd.ExecuteWithCapturedOutput();
+            buildResult.Should().Fail();
+
+            buildResult.StdErr.Should().Contain("The dependency ThisIsNotARealDependencyAndIfSomeoneGoesAndAddsAProjectWithThisNameIWillFindThemAndPunishThem could not be resolved.");
+
+            var outputDir = new DirectoryInfo(Path.Combine(testInstance.TestRoot, "bin", "Debug", "netcoreapp1.0"));
+            outputDir.GetFiles().Length.Should().Be(0);
+        }
+
         [Fact]
         public void PackageReferenceWithResourcesTest()
         {