felhom.eu/hub/cmd/hub/r173_wiring_test.go

package main

import (
	"go/ast"
	"go/parser"
	"go/token"
	"strconv"
	"testing"
)

// R-173 seam wiring: main() must schedule the nightly db snapshot — a scheduleDaily call named "db-snapshot" at
// "02:00", before DooPlex's 02:30 push — and must run the start-up catch-up (dbsnap.NeedsCatchUp). Without them the
// dbsnap package exists and DooPlex pushes nothing new. RED-PROOF: delete either call → this test fails.
func TestR173_MainSchedulesTheDBSnapshot(t *testing.T) {
	f, err := parser.ParseFile(token.NewFileSet(), "main.go", nil, 0)
	if err != nil {
		t.Fatal(err)
	}
	scheduled, catchUp := false, false
	ast.Inspect(f, func(n ast.Node) bool {
		c, ok := n.(*ast.CallExpr)
		if !ok {
			return true
		}
		if id, ok := c.Fun.(*ast.Ident); ok && id.Name == "scheduleDaily" && len(c.Args) >= 3 {
			name, _ := c.Args[1].(*ast.BasicLit)
			at, _ := c.Args[2].(*ast.BasicLit)
			if name != nil && at != nil {
				n, _ := strconv.Unquote(name.Value)
				a, _ := strconv.Unquote(at.Value)
				if n == "db-snapshot" && a == "02:00" {
					scheduled = true
				}
			}
		}
		if sel, ok := c.Fun.(*ast.SelectorExpr); ok && sel.Sel.Name == "NeedsCatchUp" {
			catchUp = true
		}
		return true
	})
	if !scheduled {
		t.Error(`cmd/hub/main.go never calls scheduleDaily(ctx, "db-snapshot", "02:00", …) — no nightly snapshot`)
	}
	if !catchUp {
		t.Error("cmd/hub/main.go never calls dbsnap.NeedsCatchUp — a pod down at 02:00 leaves a stale snapshot")
	}
}