Initial release.

Closes: cosmos/cosmos-sdk#4103

app/app_test.go

@@ -0,0 +1,44 @@
+package app
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"github.com/tendermint/tendermint/libs/db"
+	"github.com/tendermint/tendermint/libs/log"
+
+	"github.com/cosmos/cosmos-sdk/codec"
+
+	abci "github.com/tendermint/tendermint/abci/types"
+)
+
+func TestGaiadExport(t *testing.T) {
+	db := db.NewMemDB()
+	gapp := NewGaiaApp(log.NewTMLogger(log.NewSyncWriter(os.Stdout)), db, nil, true, 0)
+	setGenesis(gapp)
+
+	// Making a new app object with the db, so that initchain hasn't been called
+	newGapp := NewGaiaApp(log.NewTMLogger(log.NewSyncWriter(os.Stdout)), db, nil, true, 0)
+	_, _, err := newGapp.ExportAppStateAndValidators(false, []string{})
+	require.NoError(t, err, "ExportAppStateAndValidators should not have an error")
+}
+
+func setGenesis(gapp *GaiaApp) error {
+
+	genesisState := NewDefaultGenesisState()
+	stateBytes, err := codec.MarshalJSONIndent(gapp.cdc, genesisState)
+	if err != nil {
+		return err
+	}
+
+	// Initialize the chain
+	gapp.InitChain(
+		abci.RequestInitChain{
+			Validators:    []abci.ValidatorUpdate{},
+			AppStateBytes: stateBytes,
+		},
+	)
+	gapp.Commit()
+	return nil
+}