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|
package params_test
import (
"encoding/gob"
"errors"
"os"
"slices"
"strconv"
"syscall"
"testing"
"hakurei.app/internal/params"
)
func TestSetupReceive(t *testing.T) {
t.Run("not set", func(t *testing.T) {
const key = "TEST_ENV_NOT_SET"
{
v, ok := os.LookupEnv(key)
t.Cleanup(func() {
if ok {
if err := os.Setenv(key, v); err != nil {
t.Fatalf("Setenv: error = %v", err)
}
} else {
if err := os.Unsetenv(key); err != nil {
t.Fatalf("Unsetenv: error = %v", err)
}
}
})
}
if _, err := params.Receive(key, nil, nil); !errors.Is(err, params.ErrReceiveEnv) {
t.Errorf("Receive: error = %v, want %v", err, params.ErrReceiveEnv)
}
})
t.Run("format", func(t *testing.T) {
const key = "TEST_ENV_FORMAT"
t.Setenv(key, "")
if _, err := params.Receive(key, nil, nil); !errors.Is(err, strconv.ErrSyntax) {
t.Errorf("Receive: error = %v, want %v", err, strconv.ErrSyntax)
}
})
t.Run("range", func(t *testing.T) {
const key = "TEST_ENV_RANGE"
t.Setenv(key, "-1")
if _, err := params.Receive(key, nil, nil); !errors.Is(err, syscall.EDOM) {
t.Errorf("Receive: error = %v, want %v", err, syscall.EDOM)
}
})
t.Run("setup receive", func(t *testing.T) {
check := func(t *testing.T, useNilFdp bool) {
const key = "TEST_SETUP_RECEIVE"
payload := []uint64{syscall.MS_MGC_VAL, syscall.MS_MGC_MSK, syscall.MS_ASYNC, syscall.MS_ACTIVE}
encoderDone := make(chan error, 1)
extraFiles := make([]*os.File, 0, 1)
if r, w, err := os.Pipe(); err != nil {
t.Fatalf("Setup: error = %v", err)
} else {
t.Cleanup(func() {
if err = errors.Join(r.Close(), w.Close()); err != nil {
t.Fatal(err)
}
})
extraFiles = append(extraFiles, r)
if deadline, ok := t.Deadline(); ok {
if err = w.SetDeadline(deadline); err != nil {
t.Fatal(err)
}
}
go func() { encoderDone <- gob.NewEncoder(w).Encode(payload) }()
}
if len(extraFiles) != 1 {
t.Fatalf("extraFiles: len = %v, want 1", len(extraFiles))
}
var dupFd int
if fd, err := syscall.Dup(int(extraFiles[0].Fd())); err != nil {
t.Fatalf("Dup: error = %v", err)
} else {
syscall.CloseOnExec(fd)
dupFd = fd
t.Setenv(key, strconv.Itoa(fd))
}
var (
gotPayload []uint64
fdp *int
)
if !useNilFdp {
fdp = new(int)
}
var closeFile func() error
if f, err := params.Receive(key, &gotPayload, fdp); err != nil {
t.Fatalf("Receive: error = %v", err)
} else {
closeFile = f
if !slices.Equal(payload, gotPayload) {
t.Errorf("Receive: %#v, want %#v", gotPayload, payload)
}
}
if !useNilFdp {
if *fdp != dupFd {
t.Errorf("Fd: %d, want %d", *fdp, dupFd)
}
}
if err := <-encoderDone; err != nil {
t.Errorf("Encode: error = %v", err)
}
if closeFile != nil {
if err := closeFile(); err != nil {
t.Errorf("Close: error = %v", err)
}
}
}
t.Run("fp", func(t *testing.T) { check(t, false) })
t.Run("nil", func(t *testing.T) { check(t, true) })
})
}
|
