package announcetest

import (
	"strings"
	"testing"

	"git.novox.be/novox/mesh-sdk/go/announce"
)

// The comparison is exact up to order: a state missing, one extra, a readability that differs or another module's
// announcement each fail, naming what differs.
func TestAnAnnouncementDiffersFromTheCodeByNameAndReadability(t *testing.T) {
	got := announce.States{Module: "m", States: []announce.State{{Name: "a", Readable: true}, {Name: "b"}}}
	if p := differs(got, "m", []announce.State{{Name: "b"}, {Name: "a", Readable: true}}); p != "" {
		t.Fatalf("an equal announcement differs: %s", p)
	}
	for _, want := range [][]announce.State{
		{{Name: "a", Readable: true}},
		{{Name: "a", Readable: true}, {Name: "b"}, {Name: "c"}},
		{{Name: "a"}, {Name: "b"}},
	} {
		if p := differs(got, "m", want); p == "" || !strings.Contains(p, "declares") {
			t.Errorf("want %v: %q", want, p)
		}
	}
	if p := differs(got, "other", nil); !strings.Contains(p, `"other"`) {
		t.Errorf("another module's announcement: %q", p)
	}
	if p := differs(announce.States{Module: "m"}, "m", nil); p != "" {
		t.Errorf("a module keeping nothing: %q", p)
	}
}