package buildrun

import (
	"testing"

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

func presenceValue(t *testing.T, online bool) []byte {
	t.Helper()
	b, err := delivery.EncodePresence(delivery.Presence{Online: online})
	if err != nil {
		t.Fatal(err)
	}
	return b
}

func TestPresenceSetKnowsOnlyNodesTheWatchmanSawOnline(t *testing.T) { // 1607 review 3
	var s PresenceSet
	if s.Online("ace") {
		t.Error("a node the watchman never wrote is online")
	}
	if !s.Put("ace", presenceValue(t, true), false) || !s.Online("ace") {
		t.Error("ace online was not taken in")
	}
	if s.Put("ace", presenceValue(t, true), false) {
		t.Error("the same presence again counted as a change")
	}
	if !s.Put("ace", presenceValue(t, false), false) || s.Online("ace") {
		t.Error("ace going offline was not taken in")
	}
	s.Put("g14", presenceValue(t, true), false)
	if !s.Put("g14", nil, true) || s.Online("g14") {
		t.Error("a deleted key is still online")
	}
	// A part's instance (part.<part>.<instance>) is not a node.
	if s.Put("part.mesh-delivery-builder.novox", presenceValue(t, true), false) || s.Online("part") {
		t.Error("a part's key was taken for a node")
	}
	if s.Put("novox", []byte("junk"), false) {
		t.Error("junk counted")
	}
}