terminal: move signal shutdown test to a unix only file

Author: Vandit1604

shutdown_test.go

@@ -1,7 +1,6 @@
 package terminal
 
 import (
-	"syscall"
 	"testing"
 	"time"
 
@@ -66,19 +65,3 @@ func TestShutdownSourceChannelStable(t *testing.T) {
 
 	require.Equal(t, first, s.ShutdownChannel())
 }
-
-// TestShutdownSourceSignal checks that an OS termination signal closes the
-// shutdown channel. The signal is captured by signal.Notify, so it does not
-// terminate the test process.
-func TestShutdownSourceSignal(t *testing.T) {
-	// Not parallel: this sends a process-wide signal, which every
-	// registered shutdownSource would observe.
-	s := newShutdownSource()
-	defer s.Stop()
-
-	requireOpen(t, s.ShutdownChannel())
-
-	require.NoError(t, syscall.Kill(syscall.Getpid(), syscall.SIGTERM))
-
-	waitClosed(t, s.ShutdownChannel())
-}

shutdown_unix_test.go

@@ -0,0 +1,29 @@
+//go:build !windows
+
+package terminal
+
+import (
+	"syscall"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+// TestShutdownSourceSignal checks that an OS termination signal closes the
+// shutdown channel. The signal is captured by signal.Notify, so it does not
+// terminate the test process.
+//
+// This lives in a Unix-only file because syscall.Kill is not available on
+// Windows.
+func TestShutdownSourceSignal(t *testing.T) {
+	// Not parallel: this sends a process-wide signal, which every registered
+	// shutdownSource would observe.
+	s := newShutdownSource()
+	defer s.Stop()
+
+	requireOpen(t, s.ShutdownChannel())
+
+	require.NoError(t, syscall.Kill(syscall.Getpid(), syscall.SIGTERM))
+
+	waitClosed(t, s.ShutdownChannel())
+}