91 lines
2.4 KiB
Go
91 lines
2.4 KiB
Go
//stm: ignore
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//go:build !windows
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// +build !windows
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// This file tests file descriptor limits; since this is an OS feature, it should not be annotated
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package ulimit
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import (
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"fmt"
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"os"
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"strings"
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"syscall"
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"testing"
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"github.com/filecoin-project/lotus/build"
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)
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func TestManageFdLimit(t *testing.T) {
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t.Log("Testing file descriptor count")
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if _, _, err := ManageFdLimit(); err != nil {
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t.Errorf("Cannot manage file descriptors")
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}
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if build.DefaultFDLimit != uint64(16<<10) {
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t.Errorf("Maximum file descriptors default value changed")
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}
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}
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func TestManageInvalidNFds(t *testing.T) {
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t.Logf("Testing file descriptor invalidity")
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var err error
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if err = os.Unsetenv("IPFS_FD_MAX"); err != nil {
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t.Fatal("Cannot unset the IPFS_FD_MAX env variable")
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}
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rlimit := syscall.Rlimit{}
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if err = syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rlimit); err != nil {
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t.Fatal("Cannot get the file descriptor count")
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}
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value := rlimit.Max + rlimit.Cur
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if err = os.Setenv("IPFS_FD_MAX", fmt.Sprintf("%d", value)); err != nil {
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t.Fatal("Cannot set the IPFS_FD_MAX env variable")
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}
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t.Logf("setting ulimit to %d, max %d, cur %d", value, rlimit.Max, rlimit.Cur)
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if changed, isNew, err := ManageFdLimit(); err == nil {
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t.Errorf("ManageFdLimit should return an error: changed %t, new: %d", changed, isNew)
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} else if err != nil {
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flag := strings.Contains(err.Error(),
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"failed to raise ulimit to LOTUS_FD_MAX")
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if !flag {
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t.Error("ManageFdLimit returned unexpected error", err)
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}
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}
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// unset all previous operations
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if err = os.Unsetenv("IPFS_FD_MAX"); err != nil {
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t.Fatal("Cannot unset the IPFS_FD_MAX env variable")
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}
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}
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func TestManageFdLimitWithEnvSet(t *testing.T) {
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t.Logf("Testing file descriptor manager with IPFS_FD_MAX set")
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var err error
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if err = os.Unsetenv("IPFS_FD_MAX"); err != nil {
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t.Fatal("Cannot unset the IPFS_FD_MAX env variable")
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}
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rlimit := syscall.Rlimit{}
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if err = syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rlimit); err != nil {
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t.Fatal("Cannot get the file descriptor count")
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}
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value := rlimit.Max - rlimit.Cur + 1
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if err = os.Setenv("IPFS_FD_MAX", fmt.Sprintf("%d", value)); err != nil {
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t.Fatal("Cannot set the IPFS_FD_MAX env variable")
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}
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if _, _, err = ManageFdLimit(); err != nil {
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t.Errorf("Cannot manage file descriptor count")
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}
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// unset all previous operations
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if err = os.Unsetenv("IPFS_FD_MAX"); err != nil {
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t.Fatal("Cannot unset the IPFS_FD_MAX env variable")
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}
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}
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