package store

import (
	"context"
	"errors"
	"testing"
	"time"
)

func TestMemory_Reserve_Idempotent(t *testing.T) {
	m := NewMemory()
	d := Decision{
		DecisionID:   "dec-1",
		ApprovalRef:  "sha256:aaaa",
		TransformRef: "sha256:bbbb",
		PayloadHash:  "sha256:cccc",
		SinkTarget:   "sink:dummy-sink",
		CreatedAt:    time.Now(),
	}
	if err := m.Reserve(context.Background(), d); err != nil {
		t.Fatalf("first reserve: %v", err)
	}
	err := m.Reserve(context.Background(), d)
	if !errors.Is(err, ErrReplay) {
		t.Fatalf("second reserve: want ErrReplay, got %v", err)
	}
	got, ok, _ := m.Get(context.Background(), "dec-1")
	if !ok || got.ApprovalRef != d.ApprovalRef {
		t.Fatalf("get: ok=%v, got=%+v", ok, got)
	}
}