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test_vm.go
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test_vm.go
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// Copyright (C) 2019-2024, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package common
import (
"context"
"errors"
"net/http"
"testing"
"time"
"github.com/stretchr/testify/require"
"github.com/ava-labs/avalanchego/database"
"github.com/ava-labs/avalanchego/ids"
"github.com/ava-labs/avalanchego/snow"
"github.com/ava-labs/avalanchego/version"
)
var (
errInitialize = errors.New("unexpectedly called Initialize")
errSetState = errors.New("unexpectedly called SetState")
errShutdown = errors.New("unexpectedly called Shutdown")
errCreateHandlers = errors.New("unexpectedly called CreateHandlers")
errHealthCheck = errors.New("unexpectedly called HealthCheck")
errConnected = errors.New("unexpectedly called Connected")
errDisconnected = errors.New("unexpectedly called Disconnected")
errVersion = errors.New("unexpectedly called Version")
errAppRequest = errors.New("unexpectedly called AppRequest")
errAppResponse = errors.New("unexpectedly called AppResponse")
errAppRequestFailed = errors.New("unexpectedly called AppRequestFailed")
errAppGossip = errors.New("unexpectedly called AppGossip")
errCrossChainAppRequest = errors.New("unexpectedly called CrossChainAppRequest")
errCrossChainAppResponse = errors.New("unexpectedly called CrossChainAppResponse")
errCrossChainAppRequestFailed = errors.New("unexpectedly called CrossChainAppRequestFailed")
_ VM = (*TestVM)(nil)
)
// TestVM is a test vm
type TestVM struct {
T *testing.T
CantInitialize, CantSetState,
CantShutdown, CantCreateHandlers,
CantHealthCheck, CantConnected, CantDisconnected, CantVersion,
CantAppRequest, CantAppResponse, CantAppGossip, CantAppRequestFailed,
CantCrossChainAppRequest, CantCrossChainAppResponse, CantCrossChainAppRequestFailed bool
InitializeF func(ctx context.Context, chainCtx *snow.Context, db database.Database, genesisBytes []byte, upgradeBytes []byte, configBytes []byte, msgChan chan<- Message, fxs []*Fx, appSender AppSender) error
SetStateF func(ctx context.Context, state snow.State) error
ShutdownF func(context.Context) error
CreateHandlersF func(context.Context) (map[string]http.Handler, error)
ConnectedF func(ctx context.Context, nodeID ids.NodeID, nodeVersion *version.Application) error
DisconnectedF func(ctx context.Context, nodeID ids.NodeID) error
HealthCheckF func(context.Context) (interface{}, error)
AppRequestF func(ctx context.Context, nodeID ids.NodeID, requestID uint32, deadline time.Time, msg []byte) error
AppResponseF func(ctx context.Context, nodeID ids.NodeID, requestID uint32, msg []byte) error
AppGossipF func(ctx context.Context, nodeID ids.NodeID, msg []byte) error
AppRequestFailedF func(ctx context.Context, nodeID ids.NodeID, requestID uint32, appErr *AppError) error
VersionF func(context.Context) (string, error)
CrossChainAppRequestF func(ctx context.Context, chainID ids.ID, requestID uint32, deadline time.Time, msg []byte) error
CrossChainAppResponseF func(ctx context.Context, chainID ids.ID, requestID uint32, msg []byte) error
CrossChainAppRequestFailedF func(ctx context.Context, chainID ids.ID, requestID uint32, appErr *AppError) error
}
func (vm *TestVM) Default(cant bool) {
vm.CantInitialize = cant
vm.CantSetState = cant
vm.CantShutdown = cant
vm.CantCreateHandlers = cant
vm.CantHealthCheck = cant
vm.CantAppRequest = cant
vm.CantAppRequestFailed = cant
vm.CantAppResponse = cant
vm.CantAppGossip = cant
vm.CantVersion = cant
vm.CantConnected = cant
vm.CantDisconnected = cant
vm.CantCrossChainAppRequest = cant
vm.CantCrossChainAppRequestFailed = cant
vm.CantCrossChainAppResponse = cant
}
func (vm *TestVM) Initialize(
ctx context.Context,
chainCtx *snow.Context,
db database.Database,
genesisBytes,
upgradeBytes,
configBytes []byte,
msgChan chan<- Message,
fxs []*Fx,
appSender AppSender,
) error {
if vm.InitializeF != nil {
return vm.InitializeF(
ctx,
chainCtx,
db,
genesisBytes,
upgradeBytes,
configBytes,
msgChan,
fxs,
appSender,
)
}
if vm.CantInitialize && vm.T != nil {
require.FailNow(vm.T, errInitialize.Error())
}
return errInitialize
}
func (vm *TestVM) SetState(ctx context.Context, state snow.State) error {
if vm.SetStateF != nil {
return vm.SetStateF(ctx, state)
}
if vm.CantSetState {
if vm.T != nil {
require.FailNow(vm.T, errSetState.Error())
}
return errSetState
}
return nil
}
func (vm *TestVM) Shutdown(ctx context.Context) error {
if vm.ShutdownF != nil {
return vm.ShutdownF(ctx)
}
if vm.CantShutdown {
if vm.T != nil {
require.FailNow(vm.T, errShutdown.Error())
}
return errShutdown
}
return nil
}
func (vm *TestVM) CreateHandlers(ctx context.Context) (map[string]http.Handler, error) {
if vm.CreateHandlersF != nil {
return vm.CreateHandlersF(ctx)
}
if vm.CantCreateHandlers && vm.T != nil {
require.FailNow(vm.T, errCreateHandlers.Error())
}
return nil, nil
}
func (vm *TestVM) HealthCheck(ctx context.Context) (interface{}, error) {
if vm.HealthCheckF != nil {
return vm.HealthCheckF(ctx)
}
if vm.CantHealthCheck && vm.T != nil {
require.FailNow(vm.T, errHealthCheck.Error())
}
return nil, errHealthCheck
}
func (vm *TestVM) AppRequest(ctx context.Context, nodeID ids.NodeID, requestID uint32, deadline time.Time, request []byte) error {
if vm.AppRequestF != nil {
return vm.AppRequestF(ctx, nodeID, requestID, deadline, request)
}
if !vm.CantAppRequest {
return nil
}
if vm.T != nil {
require.FailNow(vm.T, errAppRequest.Error())
}
return errAppRequest
}
func (vm *TestVM) AppRequestFailed(ctx context.Context, nodeID ids.NodeID, requestID uint32, appErr *AppError) error {
if vm.AppRequestFailedF != nil {
return vm.AppRequestFailedF(ctx, nodeID, requestID, appErr)
}
if !vm.CantAppRequestFailed {
return nil
}
if vm.T != nil {
require.FailNow(vm.T, errAppRequestFailed.Error())
}
return errAppRequestFailed
}
func (vm *TestVM) AppResponse(ctx context.Context, nodeID ids.NodeID, requestID uint32, response []byte) error {
if vm.AppResponseF != nil {
return vm.AppResponseF(ctx, nodeID, requestID, response)
}
if !vm.CantAppResponse {
return nil
}
if vm.T != nil {
require.FailNow(vm.T, errAppResponse.Error())
}
return errAppResponse
}
func (vm *TestVM) AppGossip(ctx context.Context, nodeID ids.NodeID, msg []byte) error {
if vm.AppGossipF != nil {
return vm.AppGossipF(ctx, nodeID, msg)
}
if !vm.CantAppGossip {
return nil
}
if vm.T != nil {
require.FailNow(vm.T, errAppGossip.Error())
}
return errAppGossip
}
func (vm *TestVM) CrossChainAppRequest(ctx context.Context, chainID ids.ID, requestID uint32, deadline time.Time, request []byte) error {
if vm.CrossChainAppRequestF != nil {
return vm.CrossChainAppRequestF(ctx, chainID, requestID, deadline, request)
}
if !vm.CantCrossChainAppRequest {
return nil
}
if vm.T != nil {
require.FailNow(vm.T, errCrossChainAppRequest.Error())
}
return errCrossChainAppRequest
}
func (vm *TestVM) CrossChainAppRequestFailed(ctx context.Context, chainID ids.ID, requestID uint32, appErr *AppError) error {
if vm.CrossChainAppRequestFailedF != nil {
return vm.CrossChainAppRequestFailedF(ctx, chainID, requestID, appErr)
}
if !vm.CantCrossChainAppRequestFailed {
return nil
}
if vm.T != nil {
require.FailNow(vm.T, errCrossChainAppRequestFailed.Error())
}
return errCrossChainAppRequestFailed
}
func (vm *TestVM) CrossChainAppResponse(ctx context.Context, chainID ids.ID, requestID uint32, response []byte) error {
if vm.CrossChainAppResponseF != nil {
return vm.CrossChainAppResponseF(ctx, chainID, requestID, response)
}
if !vm.CantCrossChainAppResponse {
return nil
}
if vm.T != nil {
require.FailNow(vm.T, errCrossChainAppResponse.Error())
}
return errCrossChainAppResponse
}
func (vm *TestVM) Connected(ctx context.Context, id ids.NodeID, nodeVersion *version.Application) error {
if vm.ConnectedF != nil {
return vm.ConnectedF(ctx, id, nodeVersion)
}
if vm.CantConnected && vm.T != nil {
require.FailNow(vm.T, errConnected.Error())
}
return nil
}
func (vm *TestVM) Disconnected(ctx context.Context, id ids.NodeID) error {
if vm.DisconnectedF != nil {
return vm.DisconnectedF(ctx, id)
}
if vm.CantDisconnected && vm.T != nil {
require.FailNow(vm.T, errDisconnected.Error())
}
return nil
}
func (vm *TestVM) Version(ctx context.Context) (string, error) {
if vm.VersionF != nil {
return vm.VersionF(ctx)
}
if vm.CantVersion && vm.T != nil {
require.FailNow(vm.T, errVersion.Error())
}
return "", nil
}