plaster/ModuleBuild/scaffold/tests/meta/FileEncoding.Tests.ps1
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<# Check if the encoding of all text files in the PowerShell module is valid, this means no Unicode or UTF-8 with BOM files. #> $ModulePath = Resolve-Path -Path "$PSScriptRoot\..\..\Modules" | ForEach-Object Path $ModuleName = Get-ChildItem -Path $ModulePath | Select-Object -First 1 -ExpandProperty BaseName Remove-Module -Name $ModuleName -Force -ErrorAction SilentlyContinue Import-Module -Name "$ModulePath\$ModuleName" -Force Describe 'Meta File Encoding' { $fileExtensions = '.ps1', '.psm1', '.psd1', '.ps1xml', '.txt', '.xml', '.cmd', '.json', '.md', '.csv', '.yml', '.log', '.gitignore', '.gitattributes' $rootPath = Resolve-Path -Path "$PSScriptRoot\..\.." | ForEach-Object Path $textFiles = Get-ChildItem -Path $rootPath -File -Recurse | Where-Object { -not $_.FullName.StartsWith("$rootPath\Sources\") } | Where-Object { $fileExtensions -contains $_.Extension } | ForEach-Object { $_.FullName.Replace($rootPath, '') } Context 'No Unicode encoding' { foreach ($textFile in $textFiles) { # To check, if the file is encoded in Unicode, check for 0x00 byte # characters. In a Unicode file, every second charcter is normally # a 0x00 character, because to majority of chars don't use more than # the first byte. It "should not use Unicode encoding for $textFile" { @([System.IO.File]::ReadAllBytes("$rootPath\$textFile") -eq 0).Length -eq 0 | Should Be $true } } } Context 'No UTF-8 with BOM encoding' { foreach ($textFile in $textFiles) { # We use UTF-8 encoding with byte order mask (BOM). Therefore we # check if the file starts with the bytes 0xEF, 0xBB, 0xBF. It "should not use BOM for UTF-8 encoding for $textFile" { $bytes = [System.IO.File]::ReadAllBytes("$rootPath\$textFile") ($bytes.Length -ge 3 -and $bytes[0] -eq 239 -and $bytes[1] -eq 187 -and $bytes[2] -eq 191) | Should Be $false } } } } |