system/dbus: create context in subtest

This is causing a huge amount of spurious test failures due to the poor performance of the integration vm. This should finally put an end to the annoyance.

Signed-off-by: Ophestra <cat@gensokyo.uk>

system/dbus/dbus_test.go

@@ -63,6 +63,10 @@ func TestProxyStartWaitCloseString(t *testing.T) {
 	t.Run("direct", func(t *testing.T) { testProxyFinaliseStartWaitCloseString(t, false) })
 }
 
+const (
+	stubProxyTimeout = 30 * time.Second
+)
+
 func testProxyFinaliseStartWaitCloseString(t *testing.T, useSandbox bool) {
 	{
 		oldWaitDelay := helper.WaitDelay
@@ -118,7 +122,8 @@ func testProxyFinaliseStartWaitCloseString(t *testing.T, useSandbox bool) {
 				}
 			})
 
-			ctx, cancel := context.WithTimeout(t.Context(), 5*time.Second)
+			t.Run("run", func(t *testing.T) {
+				ctx, cancel := context.WithTimeout(t.Context(), stubProxyTimeout)
 				defer cancel()
 				output := new(strings.Builder)
 				if !useSandbox {
@@ -144,7 +149,6 @@ func testProxyFinaliseStartWaitCloseString(t *testing.T, useSandbox bool) {
 					}
 				})
 
-			t.Run("start", func(t *testing.T) {
 				if err := p.Start(); err != nil {
 					t.Fatalf("Start: error = %v",
 						err)