test: Clean incorrectly used StopSignal field from expect

Signed-off-by: Marek Siarkowicz <siarkowicz@google.com>

pkg/expect/expect.go

@@ -45,9 +45,6 @@ type ExpectProcess struct {
 	count int // increment whenever new line gets added
 	cur   int // current read position
 	err   error
-
-	// StopSignal is the signal Stop sends to the process; defaults to SIGTERM.
-	StopSignal os.Signal
 }
 
 // NewExpect creates a new process for expect testing.
@@ -59,7 +56,6 @@ func NewExpect(name string, arg ...string) (ep *ExpectProcess, err error) {
 // NewExpectWithEnv creates a new process with user defined env variables for expect testing.
 func NewExpectWithEnv(name string, args []string, env []string, serverProcessConfigName string) (ep *ExpectProcess, err error) {
 	ep = &ExpectProcess{
-		StopSignal: syscall.SIGTERM,
 		cfg: expectConfig{
 			name: serverProcessConfigName,
 			cmd:  name,
@@ -196,7 +192,7 @@ func (ep *ExpectProcess) close(kill bool) error {
 		return ep.err
 	}
 	if kill {
-		ep.Signal(ep.StopSignal)
+		ep.Signal(syscall.SIGTERM)
 	}
 
 	err := ep.cmd.Wait()

tests/e2e/ctl_v3_auth_test.go

@@ -18,7 +18,6 @@ import (
 	"context"
 	"fmt"
 	"os"
-	"syscall"
 	"testing"
 	"time"
 
@@ -167,7 +166,6 @@ func authGracefulDisableTest(cx ctlCtx) {
 
 		// ...and restart the node
 		node0 := cx.epc.Procs[0]
-		node0.WithStopSignal(syscall.SIGINT)
 		if rerr := node0.Restart(context.TODO()); rerr != nil {
 			cx.t.Fatal(rerr)
 		}
@@ -1281,7 +1279,6 @@ func authTestRevisionConsistency(cx ctlCtx) {
 	oldAuthRevision := sresp.AuthRevision
 
 	// restart the node
-	node0.WithStopSignal(syscall.SIGINT)
 	if err := node0.Restart(context.TODO()); err != nil {
 		cx.t.Fatal(err)
 	}
@@ -1400,7 +1397,6 @@ func authTestCacheReload(cx ctlCtx) {
 	}
 
 	// restart the node
-	node0.WithStopSignal(syscall.SIGINT)
 	if err := node0.Restart(context.TODO()); err != nil {
 		cx.t.Fatal(err)
 	}

tests/framework/e2e/cluster.go

@@ -18,7 +18,6 @@ import (
 	"context"
 	"fmt"
 	"net/url"
-	"os"
 	"path"
 	"regexp"
 	"strings"
@@ -524,10 +523,3 @@ func (epc *EtcdProcessCluster) Close() error {
 	epc.lg.Info("closed test cluster.")
 	return err
 }
-
-func (epc *EtcdProcessCluster) WithStopSignal(sig os.Signal) (ret os.Signal) {
-	for _, p := range epc.Procs {
-		ret = p.WithStopSignal(sig)
-	}
-	return ret
-}

tests/framework/e2e/cluster_proxy.go

@@ -22,7 +22,6 @@ import (
 	"fmt"
 	"net"
 	"net/url"
-	"os"
 	"path"
 	"strconv"
 	"strings"
@@ -100,11 +99,6 @@ func (p *proxyEtcdProcess) Close() error {
 	return err
 }
 
-func (p *proxyEtcdProcess) WithStopSignal(sig os.Signal) os.Signal {
-	p.proxyV3.WithStopSignal(sig)
-	return p.etcdProc.WithStopSignal(sig)
-}
-
 func (p *proxyEtcdProcess) Logs() LogsExpect {
 	return p.etcdProc.Logs()
 }
@@ -154,12 +148,6 @@ func (pp *proxyProc) Stop() error {
 	return nil
 }
 
-func (pp *proxyProc) WithStopSignal(sig os.Signal) os.Signal {
-	ret := pp.proc.StopSignal
-	pp.proc.StopSignal = sig
-	return ret
-}
-
 func (pp *proxyProc) Close() error { return pp.Stop() }
 
 type proxyV2Proc struct {

tests/framework/e2e/etcd_process.go

@@ -45,7 +45,6 @@ type EtcdProcess interface {
 	Restart(ctx context.Context) error
 	Stop() error
 	Close() error
-	WithStopSignal(sig os.Signal) os.Signal
 	Config() *EtcdServerProcessConfig
 	Logs() LogsExpect
 }
@@ -163,12 +162,6 @@ func (ep *EtcdServerProcess) Close() error {
 	return nil
 }
 
-func (ep *EtcdServerProcess) WithStopSignal(sig os.Signal) os.Signal {
-	ret := ep.proc.StopSignal
-	ep.proc.StopSignal = sig
-	return ret
-}
-
 func (ep *EtcdServerProcess) waitReady(ctx context.Context) error {
 	defer close(ep.donec)
 	return WaitReadyExpectProc(ctx, ep.proc, EtcdServerReadyLines)

tests/framework/e2e/etcd_spawn_cov.go

@@ -21,7 +21,6 @@ import (
 	"fmt"
 	"os"
 	"strings"
-	"syscall"
 	"time"
 
 	"go.etcd.io/etcd/client/pkg/v3/fileutil"
@@ -69,12 +68,7 @@ func SpawnCmdWithLogger(lg *zap.Logger, args []string, envVars map[string]string
 		zap.String("working-dir", wd),
 		zap.String("name", name),
 		zap.Strings("environment-variables", env))
-	ep, err := expect.NewExpectWithEnv(cmd, allArgs, env, name)
-	if err != nil {
-		return nil, err
-	}
-	ep.StopSignal = syscall.SIGTERM
-	return ep, nil
+	return expect.NewExpectWithEnv(cmd, allArgs, env, name)
 }
 
 func getCovArgs() ([]string, error) {