Refactor position construction

op-e2e/e2eutils/disputegame/game_helper.go

@@ -141,6 +141,11 @@ func (g *FaultGameHelper) getClaim(ctx context.Context, claimIdx int64) Contract
 	return claimData
 }
 
+// getClaimPosition retrieves the [types.Position] of a claim at a specific index.
+func (g *FaultGameHelper) getClaimPosition(ctx context.Context, claimIdx int64) types.Position {
+	return types.NewPositionFromGIndex(g.getClaim(ctx, claimIdx).Position.Uint64())
+}
+
 func (g *FaultGameHelper) WaitForClaimAtDepth(ctx context.Context, depth int) {
 	g.waitForClaim(
 		ctx,

op-e2e/e2eutils/disputegame/honest_helper.go

@@ -44,8 +44,7 @@ func (h *HonestHelper) Defend(ctx context.Context, claimIdx int64) {
 func (h *HonestHelper) StepFails(ctx context.Context, claimIdx int64, isAttack bool) {
 	ctx, cancel := context.WithTimeout(ctx, 2*time.Minute)
 	defer cancel()
-	claim := h.game.getClaim(ctx, claimIdx)
-	pos := types.NewPositionFromGIndex(claim.Position.Uint64())
+	pos := h.game.getClaimPosition(ctx, claimIdx)
 	if !isAttack {
 		// If we're defending, then the step will be from the trace to the next one
 		pos = pos.MoveRight()