package delivery

import (
	"os"
	"testing"
)

// 1357/AC2: a manifests value of 21 KB encodes and decodes with its manifest byte for byte. The manifest is a copy of
// mesh-catalog modules/mailu/module.json at origin/main c0880c4dc27194cbb99955579a97f3212c5be93e (20,713 bytes), the
// largest manifest of the catalogue.
func TestMailuManifestRoundTripBytesForByte(t *testing.T) {
	raw, err := os.ReadFile("testdata/manifest-mailu.json")
	if err != nil {
		t.Fatal(err)
	}
	if len(raw) != 20713 {
		t.Fatalf("the fixture is %d bytes, the catalogue's is 20713", len(raw))
	}
	data, err := EncodeManifest(Manifest{Module: "mailu", JSON: string(raw)})
	if err != nil {
		t.Fatal(err)
	}
	got, err := DecodeManifest(data)
	if err != nil {
		t.Fatal(err)
	}
	if got.JSON != string(raw) || ManifestDigest([]byte(got.JSON)) != ManifestDigest(raw) || got.Module != "mailu" {
		t.Errorf("the manifest changed on the way: %d bytes", len(got.JSON))
	}
}