1 #region Copyright notice and license 2 3 // Copyright 2018 gRPC authors. 4 // 5 // Licensed under the Apache License, Version 2.0 (the "License"); 6 // you may not use this file except in compliance with the License. 7 // You may obtain a copy of the License at 8 // 9 // http://www.apache.org/licenses/LICENSE-2.0 10 // 11 // Unless required by applicable law or agreed to in writing, software 12 // distributed under the License is distributed on an "AS IS" BASIS, 13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 // See the License for the specific language governing permissions and 15 // limitations under the License. 16 17 #endregion 18 19 using System.Reflection; 20 using NUnitLite; 21 using System; 22 using System.IO; 23 using System.Runtime.InteropServices; 24 25 namespace Grpc.Tools.Tests 26 { 27 static class MsBuildAssemblyHelper 28 { 29 [DllImport("__Internal")] mono_set_assemblies_path(string path)30 extern static void mono_set_assemblies_path(string path); 31 TweakAssemblyPathIfOnMono()32 public static void TweakAssemblyPathIfOnMono() 33 { 34 // Below is a hack to allow the tests to run under Mono Framework build. 35 // Mono unfortunately comes with broken Microsoft.Build.* assemblies installed in 36 // the GAC, so we need to tweak the assembly search path to make sure the right 37 // msbuild assemblies are loaded (and the tests work). 38 #if NET45 39 // only run this under .NET framework; under mono 40 bool isMono = Type.GetType("Mono.Runtime") != null; 41 if (isMono) 42 { 43 var mscorlibDir = Path.GetDirectoryName(typeof(Array).Assembly.Location); 44 // Construct the location of MsBuild assemblies from the location of mscorlib assembly. 45 var msbuildToolPath = Path.Combine(mscorlibDir, "..", "msbuild", "Current", "bin"); 46 47 if (!Directory.Exists(msbuildToolPath)) 48 { 49 // with older versions of mono for Mac (e.g. mono 5.16.0 which is currently 50 // installed on the kokoro mac workers) the "Current" symlink doesn't exist 51 // so also try specifying the msbuild version explicitly 52 msbuildToolPath = Path.Combine(mscorlibDir, "..", "msbuild", "15.0", "bin"); 53 } 54 55 // To make sure we've constructed the right path, make sure the assemblies we're interested 56 // in are there. 57 foreach(var assemblyName in new [] {"Microsoft.Build.Framework.dll", "Microsoft.Build.Utilities.v4.0.dll", "Microsoft.Build.Utilities.Core.dll"}) 58 { 59 if (!File.Exists(Path.Combine(msbuildToolPath, assemblyName))) 60 { 61 throw new InvalidOperationException($"Could not locate assembly {assemblyName} under {msbuildToolPath}"); 62 } 63 } 64 // Normally the assembly search path can be changed by MONO_PATH environment variable, but it needs to be done 65 // before the process starts. The following internal method allows us to do the same thing. 66 mono_set_assemblies_path(msbuildToolPath); 67 } 68 #endif 69 } 70 } 71 } 72