completed auction-creation escrow

x/cosmostest/keeper/msg_server_new_auction.go

@@ -33,12 +33,12 @@ func (k msgServer) NewAuction(goCtx context.Context, msg *types.MsgNewAuction) (
 		Ceiling:  msg.Ceiling,
 	}
 
-	addr, err := sdk.AccAddressFromBech32(msg.Creator)
+	senderAddr, err := sdk.AccAddressFromBech32(msg.Creator)
 	if err != nil {
 		return nil, fmt.Errorf("sender address `%s` format invalid (bech32 required)", msg.Creator)
 	}
 
-	spendable := k.bank.SpendableCoins(ctx, addr)
+	spendable := k.bank.SpendableCoins(ctx, senderAddr)
 	// if balance does not exceed or equal proposed auction ceiling...
 	ceiling := new(big.Int)
 	ceiling.SetString(auction.Ceiling, 10)
@@ -46,6 +46,15 @@ func (k msgServer) NewAuction(goCtx context.Context, msg *types.MsgNewAuction) (
 		return nil, fmt.Errorf("not enough balance to set ceiling %s%s", msg.Ceiling, auction.Denom)
 	}
 
+	coins := sdk.NewCoins(sdk.Coin{
+		Amount: spendable.AmountOf(auction.Ceiling),
+		Denom:  auction.Denom,
+	})
+
+	if err := k.bank.SendCoinsFromAccountToModule(ctx, senderAddr, "cosmostest", coins); err != nil {
+		return nil, fmt.Errorf("failed to transfer %s%s", auction.Ceiling, auction.Denom)
+	}
+
 	k.Keeper.SetAuction(ctx, auction)
 	next.AuctionId++
 

x/cosmostest/types/expected_keepers.go

@@ -14,5 +14,7 @@ type AccountKeeper interface {
 // BankKeeper defines the expected interface needed to retrieve account balances.
 type BankKeeper interface {
 	SpendableCoins(ctx sdk.Context, addr sdk.AccAddress) sdk.Coins
+	SendCoinsFromModuleToAccount(ctx sdk.Context, senderModule string, recipientAddr sdk.AccAddress, amt sdk.Coins) error
+	SendCoinsFromAccountToModule(ctx sdk.Context, senderAddr sdk.AccAddress, recipientModule string, amt sdk.Coins) error
 	// Methods imported from bank should be defined here
 }