mirror of https://github.com/poanetwork/gecko.git
100 lines
2.1 KiB
Go
100 lines
2.1 KiB
Go
// (c) 2019-2020, Ava Labs, Inc. All rights reserved.
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// See the file LICENSE for licensing terms.
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package snowman
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import (
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"errors"
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"github.com/ava-labs/gecko/ids"
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"github.com/ava-labs/gecko/snow/consensus/snowman"
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"github.com/ava-labs/gecko/snow/engine/common"
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)
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var (
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errBuildBlock = errors.New("unexpectedly called BuildBlock")
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errParseBlock = errors.New("unexpectedly called ParseBlock")
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errGetBlock = errors.New("unexpectedly called GetBlock")
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)
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// VMTest ...
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type VMTest struct {
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common.VMTest
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CantBuildBlock,
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CantParseBlock,
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CantGetBlock,
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CantSetPreference,
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CantLastAccepted bool
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BuildBlockF func() (snowman.Block, error)
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ParseBlockF func([]byte) (snowman.Block, error)
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GetBlockF func(ids.ID) (snowman.Block, error)
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SetPreferenceF func(ids.ID)
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LastAcceptedF func() ids.ID
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}
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// Default ...
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func (vm *VMTest) Default(cant bool) {
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vm.VMTest.Default(cant)
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vm.CantBuildBlock = cant
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vm.CantParseBlock = cant
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vm.CantGetBlock = cant
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vm.CantSetPreference = cant
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vm.CantLastAccepted = cant
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}
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// BuildBlock ...
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func (vm *VMTest) BuildBlock() (snowman.Block, error) {
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if vm.BuildBlockF != nil {
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return vm.BuildBlockF()
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}
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if vm.CantBuildBlock && vm.T != nil {
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vm.T.Fatal(errBuildBlock)
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}
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return nil, errBuildBlock
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}
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// ParseBlock ...
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func (vm *VMTest) ParseBlock(b []byte) (snowman.Block, error) {
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if vm.ParseBlockF != nil {
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return vm.ParseBlockF(b)
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}
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if vm.CantParseBlock && vm.T != nil {
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vm.T.Fatal(errParseBlock)
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}
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return nil, errParseBlock
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}
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// GetBlock ...
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func (vm *VMTest) GetBlock(id ids.ID) (snowman.Block, error) {
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if vm.GetBlockF != nil {
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return vm.GetBlockF(id)
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}
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if vm.CantGetBlock && vm.T != nil {
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vm.T.Fatal(errGetBlock)
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}
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return nil, errGetBlock
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}
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// SetPreference ...
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func (vm *VMTest) SetPreference(id ids.ID) {
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if vm.SetPreferenceF != nil {
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vm.SetPreferenceF(id)
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} else if vm.CantSetPreference && vm.T != nil {
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vm.T.Fatalf("Unexpectedly called SetPreference")
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}
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}
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// LastAccepted ...
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func (vm *VMTest) LastAccepted() ids.ID {
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if vm.LastAcceptedF != nil {
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return vm.LastAcceptedF()
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}
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if vm.CantLastAccepted && vm.T != nil {
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vm.T.Fatalf("Unexpectedly called LastAccepted")
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}
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return ids.ID{}
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}
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