package catalogue

import (
	"strings"
	"testing"
)

// 1279/AC4 (ADR 0443 §4): no module is given a way to ask where its consumer starts. A consumes entry is an event's
// name; one that carries a key asking for the stream's history is refused by name, so the safe start is the only one.
func TestAConsumesEntryAskingWhereItStartsIsRefused(t *testing.T) { // 1279/AC4
	for _, key := range []string{"from", "start", "deliver"} {
		raw := `{"module":"audit","version":"1","consumes":[{"event":"shop.order.placed","` + key + `":"beginning"}]}`
		_, err := ParseManifest([]byte(raw))
		if err == nil {
			t.Fatalf("a consumes entry with %q was accepted", key)
		}
		if !strings.Contains(err.Error(), `"`+key+`"`) || !strings.Contains(err.Error(), "consumes") {
			t.Errorf("the refusal for %q does not name the key and the field: %v", key, err)
		}
	}
	if _, err := ParseManifest([]byte(`{"module":"audit","version":"1","consumes":["shop.order.placed"]}`)); err != nil {
		t.Errorf("a plain consumes entry was refused: %v", err)
	}
}