fix: app: make SimGenesisAccount.Validate error if .BaseAccount is nil

app/genesis_account.go

@@ -43,5 +43,9 @@ func (sga SimGenesisAccount) Validate() error {
 		}
 	}
 
+	if sga.BaseAccount == nil {
+		return errors.New("BaseAccount must not be nil")
+	}
+
 	return sga.BaseAccount.Validate()
 }

app/genesis_account_fuzz_test.go

@@ -0,0 +1,35 @@
+package gaia
+
+import (
+	"runtime/debug"
+	"testing"
+
+	"github.com/google/gofuzz"
+)
+
+func TestFuzzGenesisAccountValidate(t *testing.T) {
+	if testing.Short() {
+		t.Skip("running in -short mode")
+	}
+
+	t.Parallel()
+
+	acct := new(SimGenesisAccount)
+	i := 0
+	defer func() {
+		r := recover()
+		if r == nil {
+			return
+		}
+
+		// Otherwise report on the configuration and iteration.
+		t.Fatalf("Failed SimGenesisAccount on iteration #%d: %#v\n\n%s\n\n%s", i, acct, r, debug.Stack())
+	}()
+
+	f := fuzz.New()
+	for i = 0; i < 1e5; i++ {
+		acct = new(SimGenesisAccount)
+		f.Fuzz(acct)
+		acct.Validate()
+	}
+}

go.mod

@@ -12,6 +12,7 @@ require (
 	github.com/gogo/protobuf v1.3.3
 	github.com/golang/protobuf v1.5.3
 	github.com/golangci/golangci-lint v1.52.2
+	github.com/google/gofuzz v1.2.0
 	github.com/gorilla/mux v1.8.0
 	github.com/gravity-devs/liquidity v1.5.3
 	github.com/grpc-ecosystem/grpc-gateway v1.16.0