package delivery

import (
	"strings"
	"testing"
)

// From R4e a modules value needs no old form (novox/hq ADR 0453 clause 6; issue 1851): a value with only the new
// fingerprint, or only the reason it has none, is written and read; an old value with fp or none still reads; a value
// with no fingerprint of either form and no reason is still refused.
func TestAModulesValueNeedsNoOldForm(t *testing.T) {
	fp2 := SourcePrefix2 + strings.Repeat("a", 64)
	for _, m := range []Module{
		{FP2: fp2, Repository: "a/b", Commit: "c"},
		{None2: "no lock", Repository: "a/b", Commit: "c"},
	} {
		data, err := EncodeModule(m)
		if err != nil {
			t.Fatalf("%+v was refused: %v", m, err)
		}
		back, err := DecodeModule(data)
		if err != nil || back.FP2 != m.FP2 || back.None2 != m.None2 || back.FP != "" || back.None != "" {
			t.Fatalf("decoded %+v, %v", back, err)
		}
	}
	if _, err := DecodeModule([]byte(`{"v":1,"fp":"src1:x","repository":"a/b","commit":"c"}`)); err != nil {
		t.Fatalf("an old value no longer reads: %v", err)
	}
	if _, err := EncodeModule(Module{Repository: "a/b", Commit: "c"}); err == nil {
		t.Fatal("a value with no fingerprint and no reason was accepted")
	}
}