now it creates the module account on InitChain

simapp/app.go

@@ -226,7 +226,7 @@ func NewSimApp(
 		crisis.NewAppModule(&app.CrisisKeeper),
 		supply.NewAppModule(app.SupplyKeeper, app.BankKeeper, app.AccountKeeper),
 		gov.NewAppModule(app.GovKeeper, app.AccountKeeper, app.BankKeeper, app.SupplyKeeper),
-		mint.NewAppModule(app.MintKeeper),
+		mint.NewAppModule(app.MintKeeper, app.SupplyKeeper),
 		slashing.NewAppModule(app.SlashingKeeper, app.AccountKeeper, app.BankKeeper, app.StakingKeeper),
 		distr.NewAppModule(app.DistrKeeper, app.AccountKeeper, app.BankKeeper, app.SupplyKeeper, app.StakingKeeper),
 		staking.NewAppModule(app.StakingKeeper, app.AccountKeeper, app.BankKeeper, app.SupplyKeeper),
@@ -260,7 +260,7 @@ func NewSimApp(
 		bank.NewAppModule(app.BankKeeper, app.AccountKeeper),
 		supply.NewAppModule(app.SupplyKeeper, app.BankKeeper, app.AccountKeeper),
 		gov.NewAppModule(app.GovKeeper, app.AccountKeeper, app.BankKeeper, app.SupplyKeeper),
-		mint.NewAppModule(app.MintKeeper),
+		mint.NewAppModule(app.MintKeeper, app.SupplyKeeper),
 		staking.NewAppModule(app.StakingKeeper, app.AccountKeeper, app.BankKeeper, app.SupplyKeeper),
 		distr.NewAppModule(app.DistrKeeper, app.AccountKeeper, app.BankKeeper, app.SupplyKeeper, app.StakingKeeper),
 		slashing.NewAppModule(app.SlashingKeeper, app.AccountKeeper, app.BankKeeper, app.StakingKeeper),

x/mint/genesis.go

@@ -2,12 +2,15 @@ package mint
 
 import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/x/mint/types"
 )
 
 // InitGenesis new mint genesis
-func InitGenesis(ctx sdk.Context, keeper Keeper, data GenesisState) {
+func InitGenesis(ctx sdk.Context, keeper Keeper, supplyKeeper types.SupplyKeeper, data GenesisState) {
 	keeper.SetMinter(ctx, data.Minter)
 	keeper.SetParams(ctx, data.Params)
+
+	supplyKeeper.GetModuleAccount(ctx, ModuleName)
 }
 
 // ExportGenesis returns a GenesisState for a given context and keeper.

x/mint/module.go

@@ -5,6 +5,8 @@ import (
 	"fmt"
 	"math/rand"
 
+	"github.com/cosmos/cosmos-sdk/x/mint/types"
+
 	"github.com/gorilla/mux"
 	"github.com/spf13/cobra"
 
@@ -74,14 +76,16 @@ func (AppModuleBasic) GetQueryCmd(cdc *codec.Codec) *cobra.Command {
 type AppModule struct {
 	AppModuleBasic
 
-	keeper Keeper
+	keeper       Keeper
+	supplyKeeper types.SupplyKeeper
 }
 
 // NewAppModule creates a new AppModule object
-func NewAppModule(keeper Keeper) AppModule {
+func NewAppModule(keeper Keeper, supplyKeeper types.SupplyKeeper) AppModule {
 	return AppModule{
 		AppModuleBasic: AppModuleBasic{},
 		keeper:         keeper,
+		supplyKeeper:   supplyKeeper,
 	}
 }
 
@@ -114,7 +118,9 @@ func (am AppModule) NewQuerierHandler() sdk.Querier {
 func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONMarshaler, data json.RawMessage) []abci.ValidatorUpdate {
 	var genesisState GenesisState
 	cdc.MustUnmarshalJSON(data, &genesisState)
-	InitGenesis(ctx, am.keeper, genesisState)
+
+	InitGenesis(ctx, am.keeper, am.supplyKeeper, genesisState)
+
 	return []abci.ValidatorUpdate{}
 }
 

x/mint/module_test.go

@@ -0,0 +1,29 @@
+package mint_test
+
+import (
+	"testing"
+
+	"github.com/cosmos/cosmos-sdk/x/mint"
+	"github.com/cosmos/cosmos-sdk/x/supply"
+	"github.com/stretchr/testify/assert"
+
+	"github.com/tendermint/tendermint/abci/types"
+
+	"github.com/cosmos/cosmos-sdk/simapp"
+)
+
+func TestItCreatesModuleAccountOnInitBlock(t *testing.T) {
+	app := simapp.Setup(false)
+	ctx := app.BaseApp.NewContext(false, types.Header{})
+
+	app.InitChain(
+		types.RequestInitChain{
+			AppStateBytes: []byte("{}"),
+			ChainId:       "test-chain-id",
+		},
+	)
+
+	acc := app.AccountKeeper.GetAccount(ctx, supply.NewModuleAddress(mint.ModuleName))
+
+	assert.NotNil(t, acc)
+}

x/mint/types/expected_keepers.go

@@ -17,6 +17,7 @@ type SupplyKeeper interface {
 
 	// TODO remove with genesis 2-phases refactor https://github.com/cosmos/cosmos-sdk/issues/2862
 	SetModuleAccount(sdk.Context, exported.ModuleAccountI)
+	GetModuleAccount(ctx sdk.Context, moduleName string) exported.ModuleAccountI
 
 	SendCoinsFromModuleToAccount(ctx sdk.Context, senderModule string, recipientAddr sdk.AccAddress, amt sdk.Coins) error
 	SendCoinsFromModuleToModule(ctx sdk.Context, senderModule, recipientModule string, amt sdk.Coins) error