package classes

import (
	"testing"

	"git.golem15.com/golem15/summercms/modules/pact"
)

// TestRealChanges pins which saves move lastmod (D-30, RESEARCH Pitfall
// 4): nothing for an empty or ignored-only change list; every locale for a
// change on the record's own row; only the named locales for translated
// changes.
func TestRealChanges(t *testing.T) {
	ignore := map[string]bool{"updated_at": true, "views": true}
	for name, c := range map[string]struct {
		changes []pact.RecordChange
		any     bool
		all     bool
		locales []string
	}{
		"no-op save":   {nil, false, false, nil},
		"ignored only": {[]pact.RecordChange{{Attribute: "updated_at"}, {Attribute: "views"}}, false, false, nil},
		"own row":      {[]pact.RecordChange{{Attribute: "updated_at"}, {Attribute: "title"}}, true, true, nil},
		"translated":   {[]pact.RecordChange{{Attribute: "title", Locale: "pl"}, {Attribute: "slug", Locale: "de"}}, true, false, []string{"de", "pl"}},
		"both":         {[]pact.RecordChange{{Attribute: "title", Locale: "pl"}, {Attribute: "content"}}, true, true, nil},
	} {
		got := RealChanges(c.changes, ignore)
		if got.Any != c.any || got.All != c.all || len(got.Locales) != len(c.locales) {
			t.Errorf("%s: %+v", name, got)
			continue
		}
		for _, l := range c.locales {
			if !got.Locales[l] {
				t.Errorf("%s: locale %s missing in %+v", name, l, got)
			}
		}
	}
}