param(
  [switch]$Race
)

$ErrorActionPreference = "Stop"
$Root = Resolve-Path (Join-Path $PSScriptRoot "..")
$env:GOPROXY = if ($env:YMHUT_GOPROXY) { $env:YMHUT_GOPROXY } elseif ($env:GOPROXY) { $env:GOPROXY } else { "https://goproxy.io,https://mirrors.aliyun.com/goproxy,direct" }
$previousCgo = $env:CGO_ENABLED
if ($Race) {
  $compiler = (& go env CC).Trim()
  if (-not (Get-Command $compiler -ErrorAction SilentlyContinue)) {
    throw "-Race requires a working C compiler. Go is configured for '$compiler', but that executable is not available."
  }
  $env:CGO_ENABLED = "1"
}

Push-Location $Root
try {
  & go mod download all
  if ($LASTEXITCODE -ne 0) { throw "go mod download failed with exit code $LASTEXITCODE" }
  & go mod verify
  if ($LASTEXITCODE -ne 0) { throw "go mod verify failed with exit code $LASTEXITCODE" }
  $arguments = @("test")
  if ($Race) { $arguments += "-race" }
  $arguments += "./..."
  & go @arguments
  if ($LASTEXITCODE -ne 0) { throw "go test failed with exit code $LASTEXITCODE" }
} finally {
  Pop-Location
  if ($Race) {
    if ($null -eq $previousCgo) { Remove-Item Env:\CGO_ENABLED -ErrorAction SilentlyContinue }
    else { $env:CGO_ENABLED = $previousCgo }
  }
}