forked from cerc-io/plugeth
99 lines
3.2 KiB
Go
99 lines
3.2 KiB
Go
// Copyright 2018 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package feed
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import (
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"encoding/json"
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"reflect"
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"testing"
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"github.com/ethereum/go-ethereum/common/hexutil"
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)
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// KV mocks a key value store
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type KV map[string]string
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func (kv KV) Get(key string) string {
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return kv[key]
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}
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func (kv KV) Set(key, value string) {
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kv[key] = value
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}
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func compareByteSliceToExpectedHex(t *testing.T, variableName string, actualValue []byte, expectedHex string) {
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if hexutil.Encode(actualValue) != expectedHex {
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t.Fatalf("%s: Expected %s to be %s, got %s", t.Name(), variableName, expectedHex, hexutil.Encode(actualValue))
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}
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}
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func testBinarySerializerRecovery(t *testing.T, bin binarySerializer, expectedHex string) {
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name := reflect.TypeOf(bin).Elem().Name()
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serialized := make([]byte, bin.binaryLength())
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if err := bin.binaryPut(serialized); err != nil {
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t.Fatalf("%s.binaryPut error when trying to serialize structure: %s", name, err)
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}
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compareByteSliceToExpectedHex(t, name, serialized, expectedHex)
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recovered := reflect.New(reflect.TypeOf(bin).Elem()).Interface().(binarySerializer)
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if err := recovered.binaryGet(serialized); err != nil {
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t.Fatalf("%s.binaryGet error when trying to deserialize structure: %s", name, err)
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}
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if !reflect.DeepEqual(bin, recovered) {
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t.Fatalf("Expected that the recovered %s equals the marshalled %s", name, name)
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}
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serializedWrongLength := make([]byte, 1)
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copy(serializedWrongLength[:], serialized)
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if err := recovered.binaryGet(serializedWrongLength); err == nil {
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t.Fatalf("Expected %s.binaryGet to fail since data is too small", name)
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}
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}
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func testBinarySerializerLengthCheck(t *testing.T, bin binarySerializer) {
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name := reflect.TypeOf(bin).Elem().Name()
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// make a slice that is too small to contain the metadata
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serialized := make([]byte, bin.binaryLength()-1)
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if err := bin.binaryPut(serialized); err == nil {
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t.Fatalf("Expected %s.binaryPut to fail, since target slice is too small", name)
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}
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}
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func testValueSerializer(t *testing.T, v valueSerializer, expected KV) {
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name := reflect.TypeOf(v).Elem().Name()
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kv := make(KV)
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v.AppendValues(kv)
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if !reflect.DeepEqual(expected, kv) {
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expj, _ := json.Marshal(expected)
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gotj, _ := json.Marshal(kv)
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t.Fatalf("Expected %s.AppendValues to return %s, got %s", name, string(expj), string(gotj))
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}
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recovered := reflect.New(reflect.TypeOf(v).Elem()).Interface().(valueSerializer)
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err := recovered.FromValues(kv)
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if err != nil {
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t.Fatal(err)
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}
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if !reflect.DeepEqual(recovered, v) {
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t.Fatalf("Expected recovered %s to be the same", name)
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}
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}
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