Function TestWaitPreStart_RaceRealErrorAndResult

pkg/compose/pre_start_test.go:359–369

TestWaitPreStart_RaceRealErrorAndResult stress-tests the opposite scenario: a real transport error on Error races with a stale Result. The Error must always win — the function must never silently drop the failure and return success based on Result.

(t *testing.T)

// always win — the function must never silently drop the failure and return
// success based on Result.
func TestWaitPreStart_RaceRealErrorAndResult(t *testing.T) {
	for i := 0; i < 100; i++ {
		resultC := make(chan container.WaitResponse, 1)
		errC := make(chan error, 1)
		resultC <- container.WaitResponse{StatusCode: 0}
		errC <- fmt.Errorf("daemon: connection lost")
		waitRes := client.ContainerWaitResult{Result: resultC, Error: errC}
		err := waitPreStart(t.Context(), "web", 0, waitRes)
		assert.ErrorContains(t, err, "connection lost")
	}
}