package main

import (
	"context"
	"testing"
)

// 1945 (dev-r6-controller's B8 follows it): what a bus machine runs is read from its have, not from a send kept, so a
// machine whose have names the build the mesh holds is not moved by a bus upgrade, and one whose have names an older
// build is.
func TestABusMachineRunsWhatItsHaveNames(t *testing.T) {
	was := busRuns
	t.Cleanup(func() { busRuns = was })
	busRuns = func(_ context.Context, node, _ string) (string, bool, error) {
		return map[string]string{"novox": "src2:new", "ace": "src2:old"}[node], node != "g14", nil
	}
	b := busPending{module: "nats", to: "c-new", from: map[string]string{}, same: map[string]bool{}}
	commitOf := map[string]string{"src2:new": "c-new", "src2:old": "c-old"}
	for _, n := range []string{"novox", "ace", "g14"} {
		fp, known, _ := busRuns(context.Background(), n, "nats")
		if c, ok := commitOf[fp]; known && ok {
			b.from[n] = c
		}
	}
	if b.moves("novox") || !b.moves("ace") || !b.moves("g14") {
		t.Errorf("novox moves %v (runs the new build), ace %v (an older one), g14 %v (says none)", b.moves("novox"),
			b.moves("ace"), b.moves("g14"))
	}
}