Just ignore dex on non-linux

Signed-off-by: Nelo-T. Wallus <red.brush9525@fastmail.com>
Signed-off-by: Nelo-T. Wallus <n.wallus@sap.com>

Author: ntnn

test/e2e/framework/dex.go

@@ -26,7 +26,6 @@ import (
 	"os/exec"
 	"path/filepath"
 	"sync"
-	"syscall"
 	"testing"
 	"time"
 
@@ -40,6 +39,15 @@ import (
 
 var dexOnce sync.Once
 
+func dexKill(t testing.TB, cmd *exec.Cmd) {
+	t.Helper()
+	// Do nothing. Without a suite setup and teardown we cannot
+	// determine when to kill dex and Pdeathsig is only supported on
+	// Linux.
+	// On macOS (and Windows) the process will continue to run.
+	// Which per se isn't a problem for development.
+}
+
 func StartDex(t testing.TB) {
 	t.Helper()
 
@@ -57,12 +65,8 @@ func StartDex(t testing.TB) {
 			dexConfig,
 		)
 
-		// Ensures that dex is killed when the process ends.
-		dexCmd.SysProcAttr = &syscall.SysProcAttr{
-			Pdeathsig: syscall.SIGKILL,
-			Setpgid:   true,
-			Pgid:      0,
-		}
+		// Set os-dependend killing
+		dexKill(t, dexCmd)
 
 		require.NoError(t, dexCmd.Start())
 	})

test/e2e/framework/dex_linux.go

@@ -0,0 +1,30 @@
+/*
+Copyright 2025 The Kube Bind Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package framework
+
+import (
+	"os/exec"
+	"syscall"
+	"testing"
+)
+
+func dexKill(t testing.TB, cmd *exec.Cmd) {
+	t.Helper()
+	cmd.SysProcAttr = &syscall.SysProcAttr{
+		Pdeathsig: syscall.SIGKILL,
+	}
+}