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

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

DotnetHostHelper.cs

Source:DotnetHostHelper.cs

...168            }169        }170        EqtTrace.Verbose($"DotnetHostHelper.TryGetDotnetPathByArchitecture: Muxer was not found using DOTNET_ROOT* env variables.");171        // Try to search for global registration172        muxerPath = isWinOs ? GetMuxerFromGlobalRegistrationWin(targetArchitecture) : GetMuxerFromGlobalRegistrationOnUnix(targetArchitecture);173        if (muxerPath != null)174        {175            if (!_fileHelper.Exists(muxerPath))176            {177                // If muxer doesn't exists or it's wrong we stop the search178                EqtTrace.Verbose($"DotnetHostHelper.TryGetDotnetPathByArchitecture: Muxer file not found for global registration '{muxerPath}'");179                muxerPath = null;180                return false;181            }182            if (!IsValidArchitectureMuxer(targetArchitecture, muxerPath))183            {184                // If muxer is wrong we stop the search185                EqtTrace.Verbose($"DotnetHostHelper.TryGetDotnetPathByArchitecture: Muxer resolved using global registration is not compatible with the target architecture: '{muxerPath}'");186                muxerPath = null;187                return false;188            }189            EqtTrace.Verbose($"DotnetHostHelper.TryGetDotnetPathByArchitecture: Muxer compatible with '{targetArchitecture}' resolved from global registration: '{muxerPath}'");190            return true;191        }192        EqtTrace.Verbose($"DotnetHostHelper.TryGetDotnetPathByArchitecture: Muxer not found using global registrations");193        // Try searching in default installation location if it exists194        if (isWinOs)195        {196            // If we're on x64/arm64 SDK and target is x86 we need to search on non virtualized windows folder197            if ((_environment.Architecture == PlatformArchitecture.X64 || _environment.Architecture == PlatformArchitecture.ARM64) &&198                 targetArchitecture == PlatformArchitecture.X86)199            {200                muxerPath = Path.Combine(_environmentVariableHelper.GetEnvironmentVariable("ProgramFiles(x86)")!, "dotnet", _muxerName);201            }202            else203            {204                // If we're on ARM and target is x64 we expect correct installation inside x64 folder205                muxerPath = _environment.Architecture == PlatformArchitecture.ARM64 && targetArchitecture == PlatformArchitecture.X64206                    ? Path.Combine(_environmentVariableHelper.GetEnvironmentVariable("ProgramFiles")!, "dotnet", "x64", _muxerName)207                    : Path.Combine(_environmentVariableHelper.GetEnvironmentVariable("ProgramFiles")!, "dotnet", _muxerName);208            }209        }210        else211        {212            if (_environment.OperatingSystem == PlatformOperatingSystem.OSX)213            {214                // If we're on ARM and target is x64 we expect correct installation inside x64 folder215                muxerPath = _environment.Architecture == PlatformArchitecture.ARM64 && targetArchitecture == PlatformArchitecture.X64216                    ? Path.Combine("/usr/local/share/dotnet/x64", _muxerName)217                    : Path.Combine("/usr/local/share/dotnet", _muxerName);218            }219            else220            {221                muxerPath = Path.Combine("/usr/share/dotnet", _muxerName);222            }223        }224        if (!_fileHelper.Exists(muxerPath))225        {226            // If muxer doesn't exists we stop the search227            EqtTrace.Verbose($"DotnetHostHelper.TryGetDotnetPathByArchitecture: Muxer was not found in default installation location: '{muxerPath}'");228            muxerPath = null;229            return false;230        }231        if (!IsValidArchitectureMuxer(targetArchitecture, muxerPath))232        {233            // If muxer is wrong we stop the search234            EqtTrace.Verbose($"DotnetHostHelper.TryGetDotnetPathByArchitecture: Muxer resolved in default installation path is not compatible with the target architecture: '{muxerPath}'");235            muxerPath = null;236            return false;237        }238        EqtTrace.Verbose($"DotnetHostHelper.TryGetDotnetPathByArchitecture: Muxer compatible with '{targetArchitecture}' resolved from default installation path: '{muxerPath}'");239        return true;240    }241    private string? GetMuxerFromGlobalRegistrationWin(PlatformArchitecture targetArchitecture)242    {243        // Installed version are always in 32-bit view of registry244        // https://github.com/dotnet/designs/blob/main/accepted/2020/install-locations.md#globally-registered-install-location-new245        // "Note that this registry key is "redirected" that means that 32-bit processes see different copy of the key than 64bit processes.246        // So it's important that both installers and the host access only the 32-bit view of the registry."247        using IRegistryKey? hklm = _windowsRegistryHelper.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32);248        if (hklm == null)249        {250            EqtTrace.Verbose($@"DotnetHostHelper.GetMuxerFromGlobalRegistrationWin: Missing SOFTWARE\dotnet\Setup\InstalledVersions subkey");251            return null;252        }253        using IRegistryKey? dotnetInstalledVersion = hklm.OpenSubKey(@"SOFTWARE\dotnet\Setup\InstalledVersions");254        if (dotnetInstalledVersion == null)255        {256            EqtTrace.Verbose($@"DotnetHostHelper.GetMuxerFromGlobalRegistrationWin: Missing RegistryHive.LocalMachine for RegistryView.Registry32");257            return null;258        }259        using IRegistryKey? nativeArch = dotnetInstalledVersion.OpenSubKey(targetArchitecture.ToString().ToLowerInvariant());260        string? installLocation = nativeArch?.GetValue("InstallLocation")?.ToString();261        if (installLocation == null)262        {263            EqtTrace.Verbose($@"DotnetHostHelper.GetMuxerFromGlobalRegistrationWin: Missing registry InstallLocation");264            return null;265        }266        string path = Path.Combine(installLocation.Trim(), _muxerName);267        EqtTrace.Verbose($@"DotnetHostHelper.GetMuxerFromGlobalRegistrationWin: Muxer resolved using win registry key 'SOFTWARE\dotnet\Setup\InstalledVersions\{targetArchitecture.ToString().ToLowerInvariant()}\InstallLocation' in '{path}'");268        return path;269    }270    private string? GetMuxerFromGlobalRegistrationOnUnix(PlatformArchitecture targetArchitecture)271    {272        string baseInstallLocation = "/etc/dotnet/";273        // We search for architecture specific installation274        string installLocation = $"{baseInstallLocation}install_location_{targetArchitecture.ToString().ToLowerInvariant()}";275        // We try to load archless install location file276        if (!_fileHelper.Exists(installLocation))277        {278            installLocation = $"{baseInstallLocation}install_location";279        }280        if (!_fileHelper.Exists(installLocation))281        {282            return null;283        }284        try285        {286            using Stream stream = _fileHelper.GetStream(installLocation, FileMode.Open, FileAccess.Read);287            using StreamReader streamReader = new(stream);288            string content = streamReader.ReadToEnd().Trim();289            EqtTrace.Verbose($"DotnetHostHelper: '{installLocation}' content '{content}'");290            string path = Path.Combine(content, _muxerName);291            EqtTrace.Verbose($"DotnetHostHelper: Muxer resolved using '{installLocation}' in '{path}'");292            return path;293        }294        catch (Exception ex)295        {296            EqtTrace.Error($"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:...

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