Implement self-update recovery (T-403)

app-win7/platform/windows/platform_stub_test.go

@@ -9,6 +9,7 @@ import (
 	"time"
 
 	"softbox.local/core/application/launch"
+	"softbox.local/core/updater"
 )
 
 func TestPlatformStubFailsClosed(t *testing.T) {
@@ -25,4 +26,13 @@ func TestPlatformStubFailsClosed(t *testing.T) {
 	if _, err := platform.Start(launch.Command{}); !errors.Is(err, ErrUnsupported) {
 		t.Fatalf("Start() error = %v, want ErrUnsupported", err)
 	}
+	if err := platform.WaitForProcessExit(context.Background(), 1, time.Second); !errors.Is(err, ErrUnsupported) {
+		t.Fatalf("WaitForProcessExit() error = %v, want ErrUnsupported", err)
+	}
+	if _, err := platform.StartSelfUpdate(updater.StartCommand{}); !errors.Is(err, ErrUnsupported) {
+		t.Fatalf("StartSelfUpdate() error = %v, want ErrUnsupported", err)
+	}
+	if err := platform.SyncDirectory("/tmp"); !errors.Is(err, ErrUnsupported) {
+		t.Fatalf("SyncDirectory() error = %v, want ErrUnsupported", err)
+	}
 }