refactor(tests): testutil.Network as an interface (#18389)

Co-authored-by: Anmol <anmol1696@gmail.com>

testutil/network/validator.go

@@ -0,0 +1,84 @@
+package network
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/cometbft/cometbft/node"
+	cmtclient "github.com/cometbft/cometbft/rpc/client"
+	"golang.org/x/sync/errgroup"
+	"google.golang.org/grpc"
+
+	"github.com/cosmos/cosmos-sdk/client"
+	cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
+	"github.com/cosmos/cosmos-sdk/server"
+	"github.com/cosmos/cosmos-sdk/server/api"
+	srvconfig "github.com/cosmos/cosmos-sdk/server/config"
+	servertypes "github.com/cosmos/cosmos-sdk/server/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+)
+
+// Validator defines an in-process CometBFT validator node. Through this object,
+// a client can make RPC and API calls and interact with any client command
+// or handler.
+type Validator struct {
+	AppConfig  *srvconfig.Config
+	clientCtx  client.Context
+	ctx        *server.Context
+	dir        string
+	nodeID     string
+	pubKey     cryptotypes.PubKey
+	moniker    string
+	aPIAddress string
+	rPCAddress string
+	p2PAddress string
+	address    sdk.AccAddress
+	valAddress sdk.ValAddress
+	rPCClient  cmtclient.Client
+
+	app      servertypes.Application
+	tmNode   *node.Node
+	api      *api.Server
+	grpc     *grpc.Server
+	grpcWeb  *http.Server
+	errGroup *errgroup.Group
+	cancelFn context.CancelFunc
+}
+
+var _ ValidatorI = &Validator{}
+
+func (v *Validator) GetCtx() *server.Context {
+	return v.ctx
+}
+
+func (v *Validator) GetClientCtx() client.Context {
+	return v.clientCtx
+}
+
+func (v *Validator) GetAppConfig() *srvconfig.Config {
+	return v.AppConfig
+}
+
+func (v *Validator) GetAddress() sdk.AccAddress {
+	return v.address
+}
+
+func (v *Validator) GetValAddress() sdk.ValAddress {
+	return v.valAddress
+}
+
+func (v *Validator) GetAPIAddress() string {
+	return v.aPIAddress
+}
+
+func (v *Validator) GetRPCAddress() string {
+	return v.rPCAddress
+}
+
+func (v *Validator) GetPubKey() cryptotypes.PubKey {
+	return v.pubKey
+}
+
+func (v *Validator) GetMoniker() string {
+	return v.moniker
+}