mirror of
https://github.com/henrygd/beszel.git
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86 lines
2.3 KiB
Go
86 lines
2.3 KiB
Go
//go:build testing
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package agent
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import (
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"fmt"
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"io"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"strings"
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"testing"
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"github.com/stretchr/testify/require"
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)
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// Run a copy of the test binary as a GPU command so fixtures do not need a shell.
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func TestMain(m *testing.M) {
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executable, err := os.Executable()
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if err != nil {
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panic(err)
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}
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switch strings.TrimSuffix(filepath.Base(executable), ".exe") {
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case nvidiaSmiCmd, rocmSmiCmd, tegraStatsCmd, nvtopCmd, intelGpuStatsCmd:
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output, err := os.ReadFile(executable + ".stdout")
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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// Only the parent creates files; a late collector must not undo cleanup.
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args, err := os.OpenFile(executable+".args", os.O_WRONLY|os.O_TRUNC, 0)
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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_, err = io.WriteString(args, strings.Join(os.Args[1:], " "))
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closeErr := args.Close()
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if err == nil {
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err = closeErr
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}
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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fmt.Print(string(output))
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os.Exit(0)
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}
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os.Exit(m.Run())
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}
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func gpuCommandFixture(t *testing.T, dir, name, output string) string {
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t.Helper()
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executable, err := os.Executable()
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require.NoError(t, err)
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if runtime.GOOS == "windows" {
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name += ".exe"
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}
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path := filepath.Join(dir, name)
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if err := os.Link(executable, path); err != nil {
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src, err := os.Open(executable)
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require.NoError(t, err)
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defer src.Close()
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dst, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY|os.O_EXCL, 0755)
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require.NoError(t, err)
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_, err = io.Copy(dst, src)
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closeErr := dst.Close()
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require.NoError(t, err)
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require.NoError(t, closeErr)
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}
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require.NoError(t, os.WriteFile(path+".stdout", []byte(output), 0600))
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require.NoError(t, os.WriteFile(path+".args", nil, 0600))
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return path + ".args"
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}
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func TestGPUFixtureDoesNotRecreateRemovedArgs(t *testing.T) {
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argsFile := gpuCommandFixture(t, t.TempDir(), nvidiaSmiCmd, "fixture output\n")
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require.NoError(t, os.WriteFile(argsFile, nil, 0600))
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require.NoError(t, os.Remove(argsFile))
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cmd := exec.Command(strings.TrimSuffix(argsFile, ".args"))
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err := cmd.Run()
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require.NoFileExists(t, argsFile, "a late fixture process must not recreate files removed by cleanup")
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require.Error(t, err, "the fixture must report a missing argument-capture file")
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}
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