KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta Join TestMu Conference

How to use GetMuxerArchitectureByPEHeaderOnWin method of Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Helpers.DotnetHostHelper class

Best Vstest code snippet using Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Helpers.DotnetHostHelper.GetMuxerArchitectureByPEHeaderOnWin

DotnetHostHelper.cs

Source:DotnetHostHelper.cs

...296            EqtTrace.Error($"DotnetHostHelper.GetMuxerFromGlobalRegistrationOnUnix: Exception during '{installLocation}' muxer resolution.\n{ex}");297        }298        return null;299    }300    private PlatformArchitecture? GetMuxerArchitectureByPEHeaderOnWin(string path)301    {302        try303        {304            using Stream stream = _fileHelper.GetStream(path, FileMode.Open, FileAccess.Read);305            using PEReader peReader = new(stream);306            switch (peReader.PEHeaders.CoffHeader.Machine)307            {308                case Machine.Amd64:309                    return PlatformArchitecture.X64;310                case Machine.IA64:311                    return PlatformArchitecture.X64;312                case Machine.Arm64:313                    return PlatformArchitecture.ARM64;314                case Machine.Arm:315                    return PlatformArchitecture.ARM;316                case Machine.I386:317                    return PlatformArchitecture.X86;318                default:319                    break;320            }321        }322        catch (Exception ex)323        {324            EqtTrace.Error($"DotnetHostHelper.GetMuxerArchitectureByPEHeaderOnWin: Failed to get architecture from PEHeader for '{path}'\n{ex}");325        }326        return null;327    }328    // See https://opensource.apple.com/source/xnu/xnu-2050.18.24/EXTERNAL_HEADERS/mach-o/loader.h329    // https://opensource.apple.com/source/xnu/xnu-4570.41.2/osfmk/mach/machine.h.auto.html330    private PlatformArchitecture? GetMuxerArchitectureByMachoOnMac(string path)331    {332        try333        {334            using var headerReader = _fileHelper.GetStream(path, FileMode.Open, FileAccess.Read);335            var magicBytes = new byte[4];336            var cpuInfoBytes = new byte[4];337            headerReader.Read(magicBytes, 0, magicBytes.Length);338            headerReader.Read(cpuInfoBytes, 0, cpuInfoBytes.Length);339            var magic = BitConverter.ToUInt32(magicBytes, 0);340            var cpuInfo = BitConverter.ToUInt32(cpuInfoBytes, 0);341            PlatformArchitecture? architecture = (MacOsCpuType)cpuInfo switch342            {343                MacOsCpuType.Arm64Magic or MacOsCpuType.Arm64Cigam => PlatformArchitecture.ARM64,344                MacOsCpuType.X64Magic or MacOsCpuType.X64Cigam => PlatformArchitecture.X64,345                MacOsCpuType.X86Magic or MacOsCpuType.X86Cigam => PlatformArchitecture.X86,346                _ => null,347            };348            return architecture;349        }350        catch (Exception ex)351        {352            // In case of failure during header reading we must fallback to the next place(default installation path)353            EqtTrace.Error($"DotnetHostHelper.GetMuxerArchitectureByMachoOnMac: Failed to get architecture from Mach-O for '{path}'\n{ex}");354        }355        return null;356    }357    internal enum MacOsCpuType : uint358    {359        Arm64Magic = 0x0100000c,360        Arm64Cigam = 0x0c000001,361        X64Magic = 0x01000007,362        X64Cigam = 0x07000001,363        X86Magic = 0x00000007,364        X86Cigam = 0x07000000365    }366    private bool IsValidArchitectureMuxer(PlatformArchitecture targetArchitecture, string path)367    {368        PlatformArchitecture? muxerPlatform = null;369        if (_environment.OperatingSystem == PlatformOperatingSystem.Windows)370        {371            muxerPlatform = GetMuxerArchitectureByPEHeaderOnWin(path);372        }373        else if (_environment.OperatingSystem == PlatformOperatingSystem.OSX)374        {375            muxerPlatform = GetMuxerArchitectureByMachoOnMac(path);376        }377        if (targetArchitecture != muxerPlatform)378        {379            EqtTrace.Verbose($"DotnetHostHelper.IsValidArchitectureMuxer: Incompatible architecture muxer, target architecture '{targetArchitecture}', actual '{muxerPlatform}'");380            return false;381        }382        EqtTrace.Verbose($"DotnetHostHelper.IsValidArchitectureMuxer: Compatible architecture muxer, target architecture '{targetArchitecture}', actual '{muxerPlatform}'");383        return true;384    }385}...

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.