package operatorask

import (
	"crypto/sha256"
	"encoding/hex"
	"testing"
)

// Design 47 G A-198: the act's form and its digest are mesh-sdk's, so a seat server in go/process digests an act as
// every asker does, with no import of the contracts; the digest is canonical over the act's named fields.
func TestTheActsDigestIsCanonicalOverItsNamedFields(t *testing.T) {
	a1, _ := ActDigest(Act{"verb": "release", "arg.delivery": "hq"})
	b := Act{}
	b["arg.delivery"] = "hq"
	b["verb"] = "release"
	if a2, _ := ActDigest(b); a1 != a2 {
		t.Error("the order an act was built in changed its digest")
	}
	x, _ := ActDigest(Act{"a": "b\n1:c"})
	y, _ := ActDigest(Act{"a": "b", "c": ""})
	if x == y {
		t.Error("two different acts encode the same")
	}
	if _, err := ActDigest(Act{}); err == nil {
		t.Error("an empty act was digested")
	}
	if _, err := ActDigest(Act{"": "x"}); err == nil {
		t.Error("an act with a nameless field was digested")
	}
	sum := sha256.Sum256([]byte("novox.act.v1\n4:verb\n7:release\n"))
	if got, _ := ActDigest(Act{"verb": "release"}); got != "sha256:"+hex.EncodeToString(sum[:]) {
		t.Errorf("the act's encoding is not the one written down: %s", got)
	}
}