Added tests for FunctionsPreservedDependencies functionality.

FunctionsSdkE2ETests/E2ETests.cs

@@ -93,6 +93,70 @@ public void Publish_DirectRef()
                 ValidateSharedStartupExtension);
         }
 
+        [Fact]
+        public void Build_PreservedDependencies()
+        {
+            string solutionName = "PreservedDependencies";
+            string solutionFile = solutionName + ".sln";
+            string workingDir = FindContainingDirectory(solutionFile);
+            string projectDir = Path.Combine(workingDir, solutionName);
+
+            RunDotNet("restore", workingDir, solutionFile);
+            RunDotNet("clean", workingDir, solutionFile);
+            RunDotNet("build", workingDir, solutionFile);
+
+            ValidateExtensionsJsonRecursive(projectDir, 1, expectedFolder: _expectedBinFolder, ValidateSharedStartupExtension);
+
+            string[] expectedCleanedOutputPath = new string[] { projectDir, "bin", "Debug", "netcoreapp3.1", "bin" };
+            string cleanedOutputDir = Path.Combine(expectedCleanedOutputPath);
+            List<string> preservedFiles = new List<string>() { "Microsoft.Azure.WebJobs.dll", "Microsoft.Azure.WebJobs.Host.dll" };
+            List<string> cleanedFiles = new List<string>() { "Microsoft.Net.Http.Headers.dll", "Microsoft.Azure.WebJobs.Extensions.Http.dll" };
+
+            foreach(var preservedFile in preservedFiles)
+            {
+                Assert.True(File.Exists(Path.Combine(cleanedOutputDir, preservedFile)));
+            }
+
+            foreach (var cleanedFile in cleanedFiles)
+            {
+                Assert.False(File.Exists(Path.Combine(cleanedOutputDir, cleanedFile)));
+            }
+        }
+
+        [Fact]
+        public void Publish_PreservedDependencies()
+        {
+            string publishDir = Path.Combine(Path.GetTempPath(), "FunctionsSdkTests", "pub_preservedDeps");
+            if (Directory.Exists(publishDir))
+            {
+                Directory.Delete(publishDir, true);
+            }
+
+            string solutionName = "PreservedDependencies";
+            string solutionFile = solutionName + ".sln";
+            string workingDir = FindContainingDirectory(solutionFile);
+
+            RunDotNet("restore", workingDir, solutionFile);
+            RunDotNet("clean", workingDir, solutionFile);
+            RunDotNet("publish", workingDir, solutionFile, $"-o {publishDir} /bl");
+
+            ValidateExtensionsJsonRecursive(publishDir, 1, expectedFolder: _expectedBinFolder, ValidateSharedStartupExtension);
+
+            string cleanedOutputDir = Path.Combine(publishDir, "bin");
+            List<string> preservedFiles = new List<string>() { "Microsoft.Azure.WebJobs.dll", "Microsoft.Azure.WebJobs.Host.dll" };
+            List<string> cleanedFiles = new List<string>() { "Microsoft.Net.Http.Headers.dll", "Microsoft.Azure.WebJobs.Extensions.Http.dll" };
+
+            foreach (var preservedFile in preservedFiles)
+            {
+                Assert.True(File.Exists(Path.Combine(cleanedOutputDir, preservedFile)));
+            }
+
+            foreach (var cleanedFile in cleanedFiles)
+            {
+                Assert.False(File.Exists(Path.Combine(cleanedOutputDir, cleanedFile)));
+            }
+        }
+
         [Fact]
         public void Build_DifferentFrameworks()
         {

PreservedDependencies.sln

@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.30611.23
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "PreservedDependencies", "PreservedDependencies\PreservedDependencies.csproj", "{FF7D2243-8660-4961-A68F-09B09DF9A549}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SharedStartup", "SharedStartup\SharedStartup.csproj", "{196A4BB6-8FF2-44C9-BF31-D3517140FD3A}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{FF7D2243-8660-4961-A68F-09B09DF9A549}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{FF7D2243-8660-4961-A68F-09B09DF9A549}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{FF7D2243-8660-4961-A68F-09B09DF9A549}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{FF7D2243-8660-4961-A68F-09B09DF9A549}.Release|Any CPU.Build.0 = Release|Any CPU
+		{196A4BB6-8FF2-44C9-BF31-D3517140FD3A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{196A4BB6-8FF2-44C9-BF31-D3517140FD3A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{196A4BB6-8FF2-44C9-BF31-D3517140FD3A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{196A4BB6-8FF2-44C9-BF31-D3517140FD3A}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {54BD5AE1-6A12-4857-A500-5A8E3AA3235C}
+	EndGlobalSection
+EndGlobal

PreservedDependencies/Function1.cs

@@ -0,0 +1,35 @@
+using System;
+using System.IO;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Azure.WebJobs;
+using Microsoft.Azure.WebJobs.Extensions.Http;
+using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.Logging;
+using Newtonsoft.Json;
+
+namespace PreservedDependencies
+{
+    public static class Function1
+    {
+        [FunctionName("Function1")]
+        public static async Task<IActionResult> Run(
+            [HttpTrigger(AuthorizationLevel.Anonymous, "get", "post", Route = null)] HttpRequest req,
+            ILogger log)
+        {
+            log.LogInformation("C# HTTP trigger function processed a request.");
+
+            string name = req.Query["name"];
+
+            string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
+            dynamic data = JsonConvert.DeserializeObject(requestBody);
+            name = name ?? data?.name;
+
+            string responseMessage = string.IsNullOrEmpty(name)
+                ? "This HTTP triggered function executed successfully. Pass a name in the query string or in the request body for a personalized response."
+                : $"Hello, {name}. This HTTP triggered function executed successfully.";
+
+            return new OkObjectResult(responseMessage);
+        }
+    }
+}

PreservedDependencies/PreservedDependencies.csproj

@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <Import Project="..\SdkVersion.props" />
+  <PropertyGroup>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <AzureFunctionsVersion>v3</AzureFunctionsVersion>
+  </PropertyGroup>
+  <ItemGroup>
+    <FunctionsPreservedDependencies Include="Microsoft.Azure.WebJobs.dll" />
+    <FunctionsPreservedDependencies Include="Microsoft.Azure.WebJobs.Host.dll" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Azure.WebJobs.Script.ExtensionsMetadataGenerator" Version="$(ExtensionsMetadataGeneratorDirectReferenceVersion)" />
+    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="$(MicrosoftNetSdkFunctionsV3Version)" />
+  </ItemGroup>
+  <ItemGroup>
+      <ProjectReference Include="..\SharedStartup\SharedStartup.csproj" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Update="host.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="local.settings.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <CopyToPublishDirectory>Never</CopyToPublishDirectory>
+    </None>
+  </ItemGroup>
+</Project>

PreservedDependencies/host.json

@@ -0,0 +1,11 @@
+{
+    "version": "2.0",
+    "logging": {
+        "applicationInsights": {
+            "samplingExcludedTypes": "Request",
+            "samplingSettings": {
+                "isEnabled": true
+            }
+        }
+    }
+}

PreservedDependencies/local.settings.json

@@ -0,0 +1,7 @@
+{
+    "IsEncrypted": false,
+    "Values": {
+        "AzureWebJobsStorage": "UseDevelopmentStorage=true",
+        "FUNCTIONS_WORKER_RUNTIME": "dotnet"
+    }
+}