Private/Test-Dotnet.ps1
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# This tests if if the .NET SDK of the specified version exists # If you specify the InstallDir, it will check if the .NET SDK exists there # Otherwise it will use the global .NET SDK location. function Test-Dotnet { [CmdletBinding()] param( [Parameter(Mandatory=$true)] [string] $Version, [Parameter()] [string] $InstallDir ) $IsWindowsEnv = !$PSVersionTable.Platform -or $PSVersionTable.Platform -eq "Win32NT" $dotnetFile = if ($IsWindowsEnv) { "dotnet.exe" } else { "dotnet" } if ($InstallDir) { $dotnetExePath = Join-Path -Path $InstallDir -ChildPath $dotnetFile } else { # If dotnet is already in the PATH, check to see if that version of dotnet can find the required SDK. # This is "typically" the globally installed dotnet. $dotnetInPath = Get-Command 'dotnet' -ErrorAction SilentlyContinue if ($dotnetInPath) { $dotnetExePath = $dotnetInPath.Source } else { $LocalDotnetDirPath = if ($IsWindowsEnv) { "$env:LocalAppData\Microsoft\dotnet" } else { "$env:HOME/.dotnet" } $dotnetExePath = Join-Path -Path $LocalDotnetDirPath -ChildPath $dotnetFile } } if (Test-Path $dotnetExePath) { $installedVersion = Get-DotnetVersion $dotnetExePath if ($Version -eq 'latest') { # TODO: This could query the version if you have the latest return $false } else { # We need to separate the prerelease from the version $installedVer, $installedPre = ($installedVersion -split '-') $ver, $pre = ($Version -split '-') if ([version] $installedVer -gt [version] $ver) { return $true } if ([version] $installedVer -lt [version] $ver) { return $false } # Handle the case if they have the same version but no prerelease if ($installedPre -eq "") { return $true } if ($pre -eq "") { return $false } # Compare prerelease if they both have them return $installedPre -ge $pre } } return $false } # Pulled out for mocking purpose function Get-DotnetVersion { param( [string] $dotnetExePath ) & $dotnetExePath --version } |