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Bugfix for opts.state overwrite #415

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merged 2 commits into from
Jan 10, 2019
Merged

Bugfix for opts.state overwrite #415

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f6b8615
Fixed an issue where trie passed as opts.state is overwritten if opts…
holgerd77 Jan 10, 2019
240dab6
Added API test case to check if state manager instance works with tri…
holgerd77 Jan 10, 2019
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1 change: 0 additions & 1 deletion lib/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -57,7 +57,6 @@ function VM (opts = {}) {
} else {
var trie = opts.state || new Trie()
if (opts.activatePrecompiles) {
trie = new Trie()
for (var i = 1; i <= 8; i++) {
trie.put(new BN(i).toArrayLike(Buffer, 'be', 20), new Account().serialize())
}
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2 changes: 1 addition & 1 deletion package.json
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Expand Up @@ -41,7 +41,7 @@
"ethereumjs-util": "^6.0.0",
"fake-merkle-patricia-tree": "^1.0.1",
"functional-red-black-tree": "^1.0.1",
"merkle-patricia-tree": "^2.1.2",
"merkle-patricia-tree": "^2.3.2",
"rustbn.js": "~0.2.0",
"safe-buffer": "^5.1.1"
},
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12 changes: 11 additions & 1 deletion tests/api/index.js
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Expand Up @@ -2,13 +2,14 @@ const { promisify } = require('util')
const tape = require('tape')
const util = require('ethereumjs-util')
const Block = require('ethereumjs-block')
const Trie = require('merkle-patricia-tree/secure')
const VM = require('../../lib/index')
const { setupVM } = require('./utils')
const { setupPreConditions } = require('../util')
const testData = require('./testdata.json')

tape('VM with fake blockchain', (t) => {
t.test('should insantiate without params', (st) => {
t.test('should instantiate without params', (st) => {
const vm = new VM()
st.ok(vm.stateManager)
st.deepEqual(vm.stateManager._trie.root, util.KECCAK256_RLP, 'it has default trie')
Expand All @@ -22,6 +23,15 @@ tape('VM with fake blockchain', (t) => {
st.end()
})

t.test('should work with trie (state) provided', (st) => {
let trie = new Trie()
trie.isTestTrie = true
let vm = new VM({ state: trie, activatePrecompiles: true })
st.notEqual(vm.stateManager._trie.root, util.KECCAK256_RLP, 'it has different root')
st.ok(vm.stateManager._trie.isTestTrie, 'it works on trie provided')
st.end()
})

t.test('should only accept valid chain and fork', (st) => {
let vm = new VM({ chain: 'ropsten', hardfork: 'byzantium' })
st.equal(vm.stateManager._common.param('gasPrices', 'ecAdd'), 500)
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