package main

import (
	"os"
	"path/filepath"
	"runtime"
	"strings"
	"testing"
	"time"
)

// vLLM writes its log to stderr; `docker logs` passes that on to its own stderr, so both streams must come back.
func TestDockerLogsKeepsStderr(t *testing.T) {
	if runtime.GOOS == "windows" {
		t.Skip("needs a shell script as a fake docker")
	}
	dir := t.TempDir()
	fake := "#!/bin/sh\necho out-line\necho 'ValueError: model not supported' >&2\n"
	if err := os.WriteFile(filepath.Join(dir, "docker"), []byte(fake), 0o755); err != nil {
		t.Fatal(err)
	}
	t.Setenv("PATH", dir+string(os.PathListSeparator)+os.Getenv("PATH"))
	out, err := dockerLogs(5*time.Second, "logs", "--tail", "5", "x")
	if err != nil || !strings.Contains(out, "out-line") || !strings.Contains(out, "model not supported") {
		t.Fatalf("got %q, %v", out, err)
	}
}