Merge branch 'develop' into testing

10 files changed, 271 insertions, 194 deletions

diff --git a/test/unit/metamask-controller-test.js b/test/unit/metamask-controller-test.js
index acf105d4d..ae9f549ad 100644
--- a/test/unit/metamask-controller-test.js
+++ b/test/unit/metamask-controller-test.js
@@ -8,6 +8,11 @@ const blacklistJSON = require('../stub/blacklist')
 const firstTimeState = require('../../app/scripts/first-time-state')
 
 const currentNetworkId = 42
+const DEFAULT_LABEL = 'Account 1'
+const TEST_SEED = 'debris dizzy just program just float decrease vacant alarm reduce speak stadium'
+const TEST_ADDRESS = '0x0dcd5d886577d5081b0c52e242ef29e70be3e7bc'
+const TEST_SEED_ALT = 'setup olympic issue mobile velvet surge alcohol burger horse view reopen gentle'
+const TEST_ADDRESS_ALT = '0xc42edfcc21ed14dda456aa0756c153f7985d8813'
 
 describe('MetaMaskController', function () {
   let metamaskController
@@ -100,18 +105,29 @@ describe('MetaMaskController', function () {
 
   describe('#createNewVaultAndRestore', function () {
     it('should be able to call newVaultAndRestore despite a mistake.', async function () {
-
       const password = 'what-what-what'
-      const wrongSeed = 'debris dizzy just program just float decrease vacant alarm reduce speak stadiu'
-      const rightSeed = 'debris dizzy just program just float decrease vacant alarm reduce speak stadium'
-      await metamaskController.createNewVaultAndRestore(password, wrongSeed)
-        .catch((e) => {
-          return
-        })
-      await metamaskController.createNewVaultAndRestore(password, rightSeed)
+      await metamaskController.createNewVaultAndRestore(password, TEST_SEED.slice(0, -1)).catch((e) => null)
+      await metamaskController.createNewVaultAndRestore(password, TEST_SEED)
 
       assert(metamaskController.keyringController.createNewVaultAndRestore.calledTwice)
     })
+
+    it('should clear previous identities after vault restoration', async () => {
+      await metamaskController.createNewVaultAndRestore('foobar1337', TEST_SEED)
+      assert.deepEqual(metamaskController.getState().identities, {
+        [TEST_ADDRESS]: { address: TEST_ADDRESS, name: DEFAULT_LABEL },
+      })
+
+      await metamaskController.keyringController.saveAccountLabel(TEST_ADDRESS, 'Account Foo')
+      assert.deepEqual(metamaskController.getState().identities, {
+        [TEST_ADDRESS]: { address: TEST_ADDRESS, name: 'Account Foo' },
+      })
+
+      await metamaskController.createNewVaultAndRestore('foobar1337', TEST_SEED_ALT)
+      assert.deepEqual(metamaskController.getState().identities, {
+        [TEST_ADDRESS_ALT]: { address: TEST_ADDRESS_ALT, name: DEFAULT_LABEL },
+      })
+    })
   })
 
   describe('#getApi', function () {
diff --git a/test/unit/network-contoller-test.js b/test/unit/network-contoller-test.js
index dd0b52365..2b905718b 100644
--- a/test/unit/network-contoller-test.js
+++ b/test/unit/network-contoller-test.js
@@ -1,6 +1,10 @@
 const assert = require('assert')
 const nock = require('nock')
 const NetworkController = require('../../app/scripts/controllers/network')
+const {
+  getNetworkDisplayName,
+  getNetworkEndpoints,
+} = require('../../app/scripts/controllers/network/util')
 
 const { createTestProviderTools } = require('../stub/provider')
 const providerResultStub = {}
@@ -79,4 +83,40 @@ describe('# Network Controller', function () {
       })
     })
   })
-})
\ No newline at end of file
+})
+
+describe('# Network utils', () => {
+  it('getNetworkDisplayName should return the correct network name', () => {
+    const tests = [
+      {
+        input: 3,
+        expected: 'Ropsten',
+      }, {
+        input: 4,
+        expected: 'Rinkeby',
+      }, {
+        input: 42,
+        expected: 'Kovan',
+      }, {
+        input: 'ropsten',
+        expected: 'Ropsten',
+      }, {
+        input: 'rinkeby',
+        expected: 'Rinkeby',
+      }, {
+        input: 'kovan',
+        expected: 'Kovan',
+      }, {
+        input: 'mainnet',
+        expected: 'Main Ethereum Network',
+      },
+    ]
+
+    tests.forEach(({ input, expected }) => assert.equal(getNetworkDisplayName(input), expected))
+  })
+
+  it('getNetworkEndpoints should return the correct endpoints', () => {
+    assert.equal(getNetworkEndpoints('networkBeta').ropsten, 'https://ropsten.infura.io/metamask2')
+    assert.equal(getNetworkEndpoints('network').rinkeby, 'https://rinkeby.infura.io/metamask')
+  })
+})
diff --git a/test/unit/nonce-tracker-test.js b/test/unit/nonce-tracker-test.js
index 5a27882ef..cf26945d3 100644
--- a/test/unit/nonce-tracker-test.js
+++ b/test/unit/nonce-tracker-test.js
@@ -1,5 +1,5 @@
 const assert = require('assert')
-const NonceTracker = require('../../app/scripts/lib/nonce-tracker')
+const NonceTracker = require('../../app/scripts/controllers/transactions/nonce-tracker')
 const MockTxGen = require('../lib/mock-tx-gen')
 let providerResultStub = {}
 
diff --git a/test/unit/pending-tx-test.js b/test/unit/pending-tx-test.js
index 62f4f28a8..97ac8524b 100644
--- a/test/unit/pending-tx-test.js
+++ b/test/unit/pending-tx-test.js
@@ -4,7 +4,7 @@ const EthTx = require('ethereumjs-tx')
 const ObservableStore = require('obs-store')
 const clone = require('clone')
 const { createTestProviderTools } = require('../stub/provider')
-const PendingTransactionTracker = require('../../app/scripts/lib/pending-tx-tracker')
+const PendingTransactionTracker = require('../../app/scripts/controllers/transactions/pending-tx-tracker')
 const MockTxGen = require('../lib/mock-tx-gen')
 const sinon = require('sinon')
 const noop = () => true
diff --git a/test/unit/tx-controller-test.js b/test/unit/tx-controller-test.js
index 824574ff2..ddd921652 100644
--- a/test/unit/tx-controller-test.js
+++ b/test/unit/tx-controller-test.js
@@ -5,17 +5,16 @@ const EthjsQuery = require('ethjs-query')
 const ObservableStore = require('obs-store')
 const sinon = require('sinon')
 const TransactionController = require('../../app/scripts/controllers/transactions')
-const TxGasUtils = require('../../app/scripts/lib/tx-gas-utils')
-const { createTestProviderTools } = require('../stub/provider')
+const TxGasUtils = require('../../app/scripts/controllers/transactions/tx-gas-utils')
+const { createTestProviderTools, getTestAccounts } = require('../stub/provider')
 
 const noop = () => true
 const currentNetworkId = 42
 const otherNetworkId = 36
-const privKey = new Buffer('8718b9618a37d1fc78c436511fc6df3c8258d3250635bba617f33003270ec03e', 'hex')
 
 
 describe('Transaction Controller', function () {
-  let txController, provider, providerResultStub, testBlockchain
+  let txController, provider, providerResultStub, query, fromAccount
 
   beforeEach(function () {
     providerResultStub = {
@@ -24,9 +23,9 @@ describe('Transaction Controller', function () {
       // by default, all accounts are external accounts (not contracts)
       eth_getCode: '0x',
     }
-    const providerTools = createTestProviderTools({ scaffold: providerResultStub })
-    provider = providerTools.provider
-    testBlockchain = providerTools.testBlockchain
+    provider = createTestProviderTools({ scaffold: providerResultStub }).provider
+    query = new EthjsQuery(provider)
+    fromAccount = getTestAccounts()[0]
 
     txController = new TransactionController({
       provider,
@@ -34,13 +33,43 @@ describe('Transaction Controller', function () {
       txHistoryLimit: 10,
       blockTracker: { getCurrentBlock: noop, on: noop, once: noop },
       signTransaction: (ethTx) => new Promise((resolve) => {
-        ethTx.sign(privKey)
+        ethTx.sign(fromAccount.key)
         resolve()
       }),
     })
     txController.nonceTracker.getNonceLock = () => Promise.resolve({ nextNonce: 0, releaseLock: noop })
   })
 
+  describe('#isNonceTaken', function () {
+    it('should return true', function (done) {
+      txController.txStateManager._saveTxList([
+        { id: 1, status: 'submitted', metamaskNetworkId: currentNetworkId, txParams: {nonce: 0, from: '0x8ACCE2391C0d510a6C5E5D8f819A678F79B7E675'} },
+        { id: 2, status: 'confirmed', metamaskNetworkId: currentNetworkId, txParams: {nonce: 0, from: '0x8ACCE2391C0d510a6C5E5D8f819A678F79B7E675'} },
+        { id: 3, status: 'submitted', metamaskNetworkId: currentNetworkId, txParams: {nonce: 0, from: '0x8ACCE2391C0d510a6C5E5D8f819A678F79B7E675'} },
+      ])
+      txController.isNonceTaken({txParams: {nonce:0, from:'0x8ACCE2391C0d510a6C5E5D8f819A678F79B7E675'}})
+      .then((isNonceTaken) => {
+        assert(isNonceTaken)
+        done()
+      }).catch(done)
+
+    })
+    it('should return false', function (done) {
+      txController.txStateManager._saveTxList([
+        { id: 1, status: 'submitted', metamaskNetworkId: currentNetworkId, txParams: {nonce: 0, from: '0x8ACCE2391C0d510a6C5E5D8f819A678F79B7E675'} },
+        { id: 2, status: 'submitted', metamaskNetworkId: currentNetworkId, txParams: {nonce: 0, from: '0x8ACCE2391C0d510a6C5E5D8f819A678F79B7E675'} },
+        { id: 3, status: 'submitted', metamaskNetworkId: currentNetworkId, txParams: {nonce: 0, from: '0x8ACCE2391C0d510a6C5E5D8f819A678F79B7E675'} },
+      ])
+
+      txController.isNonceTaken({txParams: {nonce:0, from:'0x8ACCE2391C0d510a6C5E5D8f819A678F79B7E675'}})
+      .then((isNonceTaken) => {
+        assert(!isNonceTaken)
+        done()
+      }).catch(done)
+
+    })
+  })
+
   describe('#getState', function () {
     it('should return a state object with the right keys and datat types', function () {
       const exposedState = txController.getState()
@@ -188,7 +217,7 @@ describe('Transaction Controller', function () {
 
   })
 
-  describe('#addTxDefaults', function () {
+  describe('#addTxGasDefaults', function () {
     it('should add the tx defaults if their are none', function (done) {
       const txMeta = {
         'txParams': {
@@ -199,7 +228,7 @@ describe('Transaction Controller', function () {
         providerResultStub.eth_gasPrice = '4a817c800'
         providerResultStub.eth_getBlockByNumber = { gasLimit: '47b784' }
         providerResultStub.eth_estimateGas = '5209'
-      txController.addTxDefaults(txMeta)
+      txController.addTxGasDefaults(txMeta)
       .then((txMetaWithDefaults) => {
         assert(txMetaWithDefaults.txParams.value, '0x0', 'should have added 0x0 as the value')
         assert(txMetaWithDefaults.txParams.gasPrice, 'should have added the gas price')
@@ -210,99 +239,6 @@ describe('Transaction Controller', function () {
     })
   })
 
-  describe('#_validateTxParams', function () {
-    it('does not throw for positive values', function () {
-      var sample = {
-        from: '0x1678a085c290ebd122dc42cba69373b5953b831d',
-        value: '0x01',
-      }
-      txController._validateTxParams(sample)
-    })
-
-    it('returns error for negative values', function () {
-      var sample = {
-        from: '0x1678a085c290ebd122dc42cba69373b5953b831d',
-        value: '-0x01',
-      }
-      try {
-        txController._validateTxParams(sample)
-      } catch (err) {
-        assert.ok(err, 'error')
-      }
-    })
-  })
-
-  describe('#_normalizeTxParams', () => {
-    it('should normalize txParams', () => {
-      let txParams = {
-        chainId: '0x1',
-        from: 'a7df1beDBF813f57096dF77FCd515f0B3900e402',
-        to: null,
-        data: '68656c6c6f20776f726c64',
-        random: 'hello world',
-      }
-
-      let normalizedTxParams = txController._normalizeTxParams(txParams)
-
-      assert(!normalizedTxParams.chainId, 'their should be no chainId')
-      assert(!normalizedTxParams.to, 'their should be no to address if null')
-      assert.equal(normalizedTxParams.from.slice(0, 2), '0x', 'from should be hexPrefixd')
-      assert.equal(normalizedTxParams.data.slice(0, 2), '0x', 'data should be hexPrefixd')
-      assert(!('random' in normalizedTxParams), 'their should be no random key in normalizedTxParams')
-
-      txParams.to = 'a7df1beDBF813f57096dF77FCd515f0B3900e402'
-      normalizedTxParams = txController._normalizeTxParams(txParams)
-      assert.equal(normalizedTxParams.to.slice(0, 2), '0x', 'to should be hexPrefixd')
-
-    })
-  })
-
-  describe('#_validateRecipient', () => {
-    it('removes recipient for txParams with 0x when contract data is provided', function () {
-      const zeroRecipientandDataTxParams = {
-        from: '0x1678a085c290ebd122dc42cba69373b5953b831d',
-        to: '0x',
-        data: 'bytecode',
-      }
-      const sanitizedTxParams = txController._validateRecipient(zeroRecipientandDataTxParams)
-      assert.deepEqual(sanitizedTxParams, { from: '0x1678a085c290ebd122dc42cba69373b5953b831d', data: 'bytecode' }, 'no recipient with 0x')
-    })
-
-    it('should error when recipient is 0x', function () {
-      const zeroRecipientTxParams = {
-        from: '0x1678a085c290ebd122dc42cba69373b5953b831d',
-        to: '0x',
-      }
-      assert.throws(() => { txController._validateRecipient(zeroRecipientTxParams) }, Error, 'Invalid recipient address')
-    })
-  })
-
-
-  describe('#_validateFrom', () => {
-    it('should error when from is not a hex string', function () {
-
-      // where from is undefined
-      const txParams = {}
-      assert.throws(() => { txController._validateFrom(txParams) }, Error, `Invalid from address ${txParams.from} not a string`)
-
-      // where from is array
-      txParams.from = []
-      assert.throws(() => { txController._validateFrom(txParams) }, Error, `Invalid from address ${txParams.from} not a string`)
-
-      // where from is a object
-      txParams.from = {}
-      assert.throws(() => { txController._validateFrom(txParams) }, Error, `Invalid from address ${txParams.from} not a string`)
-
-      // where from is a invalid address
-      txParams.from = 'im going to fail'
-      assert.throws(() => { txController._validateFrom(txParams) }, Error, `Invalid from address`)
-
-      // should run
-      txParams.from ='0x1678a085c290ebd122dc42cba69373b5953b831d'
-      txController._validateFrom(txParams)
-      })
-  })
-
   describe('#addTx', function () {
     it('should emit updates', function (done) {
       const txMeta = {
@@ -391,12 +327,12 @@ describe('Transaction Controller', function () {
 
   describe('#updateAndApproveTransaction', function () {
     let txMeta
-    beforeEach(function () {
+    beforeEach(() => {
       txMeta = {
         id: 1,
         status: 'unapproved',
         txParams: {
-          from: '0xc684832530fcbddae4b4230a47e991ddcec2831d',
+          from: fromAccount.address,
           to: '0x1678a085c290ebd122dc42cba69373b5953b831d',
           gasPrice: '0x77359400',
           gas: '0x7b0d',
@@ -405,11 +341,12 @@ describe('Transaction Controller', function () {
         metamaskNetworkId: currentNetworkId,
       }
     })
-    it('should update and approve transactions', function () {
+    it('should update and approve transactions', async () => {
       txController.txStateManager.addTx(txMeta)
-      txController.updateAndApproveTransaction(txMeta)
+      const approvalPromise = txController.updateAndApproveTransaction(txMeta)
       const tx = txController.txStateManager.getTx(1)
       assert.equal(tx.status, 'approved')
+      await approvalPromise
     })
   })
 
diff --git a/test/unit/tx-gas-util-test.js b/test/unit/tx-gas-util-test.js
index 40ea8a7d6..c1d5966da 100644
--- a/test/unit/tx-gas-util-test.js
+++ b/test/unit/tx-gas-util-test.js
@@ -1,14 +1,77 @@
 const assert = require('assert')
-const TxGasUtils = require('../../app/scripts/lib/tx-gas-utils')
-const { createTestProviderTools } = require('../stub/provider')
-
-describe('Tx Gas Util', function () {
-  let txGasUtil, provider, providerResultStub
-  beforeEach(function () {
-    providerResultStub = {}
-    provider = createTestProviderTools({ scaffold: providerResultStub }).provider
-    txGasUtil = new TxGasUtils({
-      provider,
+const Transaction = require('ethereumjs-tx')
+const BN = require('bn.js')
+
+
+const { hexToBn, bnToHex } = require('../../app/scripts/lib/util')
+const TxUtils = require('../../app/scripts/controllers/transactions/tx-gas-utils')
+
+
+describe('txUtils', function () {
+  let txUtils
+
+  before(function () {
+    txUtils = new TxUtils(new Proxy({}, {
+      get: (obj, name) => {
+        return () => {}
+      },
+    }))
+  })
+
+  describe('chain Id', function () {
+    it('prepares a transaction with the provided chainId', function () {
+      const txParams = {
+        to: '0x70ad465e0bab6504002ad58c744ed89c7da38524',
+        from: '0x69ad465e0bab6504002ad58c744ed89c7da38525',
+        value: '0x0',
+        gas: '0x7b0c',
+        gasPrice: '0x199c82cc00',
+        data: '0x',
+        nonce: '0x3',
+        chainId: 42,
+      }
+      const ethTx = new Transaction(txParams)
+      assert.equal(ethTx.getChainId(), 42, 'chainId is set from tx params')
+    })
+  })
+
+  describe('addGasBuffer', function () {
+    it('multiplies by 1.5, when within block gas limit', function () {
+      // naive estimatedGas: 0x16e360 (1.5 mil)
+      const inputHex = '0x16e360'
+      // dummy gas limit: 0x3d4c52 (4 mil)
+      const blockGasLimitHex = '0x3d4c52'
+      const output = txUtils.addGasBuffer(inputHex, blockGasLimitHex)
+      const inputBn = hexToBn(inputHex)
+      const outputBn = hexToBn(output)
+      const expectedBn = inputBn.muln(1.5)
+      assert(outputBn.eq(expectedBn), 'returns 1.5 the input value')
+    })
+
+    it('uses original estimatedGas, when above block gas limit', function () {
+      // naive estimatedGas: 0x16e360 (1.5 mil)
+      const inputHex = '0x16e360'
+      // dummy gas limit: 0x0f4240 (1 mil)
+      const blockGasLimitHex = '0x0f4240'
+      const output = txUtils.addGasBuffer(inputHex, blockGasLimitHex)
+      // const inputBn = hexToBn(inputHex)
+      const outputBn = hexToBn(output)
+      const expectedBn = hexToBn(inputHex)
+      assert(outputBn.eq(expectedBn), 'returns the original estimatedGas value')
+    })
+
+    it('buffers up to recommend gas limit recommended ceiling', function () {
+      // naive estimatedGas: 0x16e360 (1.5 mil)
+      const inputHex = '0x16e360'
+      // dummy gas limit: 0x1e8480 (2 mil)
+      const blockGasLimitHex = '0x1e8480'
+      const blockGasLimitBn = hexToBn(blockGasLimitHex)
+      const ceilGasLimitBn = blockGasLimitBn.muln(0.9)
+      const output = txUtils.addGasBuffer(inputHex, blockGasLimitHex)
+      // const inputBn = hexToBn(inputHex)
+      // const outputBn = hexToBn(output)
+      const expectedHex = bnToHex(ceilGasLimitBn)
+      assert.equal(output, expectedHex, 'returns the gas limit recommended ceiling value')
     })
   })
 })
diff --git a/test/unit/tx-state-history-helper-test.js b/test/unit/tx-state-history-helper-test.js
index 90cb10713..35e9ef188 100644
--- a/test/unit/tx-state-history-helper-test.js
+++ b/test/unit/tx-state-history-helper-test.js
@@ -1,6 +1,6 @@
 const assert = require('assert')
 const clone = require('clone')
-const txStateHistoryHelper = require('../../app/scripts/lib/tx-state-history-helper')
+const txStateHistoryHelper = require('../../app/scripts/controllers/transactions/lib/tx-state-history-helper')
 
 describe('deepCloneFromTxMeta', function () {
   it('should clone deep', function () {
diff --git a/test/unit/tx-state-history-helper.js b/test/unit/tx-state-history-helper.js
index 79ee26d6e..35f7dac57 100644
--- a/test/unit/tx-state-history-helper.js
+++ b/test/unit/tx-state-history-helper.js
@@ -1,5 +1,5 @@
 const assert = require('assert')
-const txStateHistoryHelper = require('../../app/scripts/lib/tx-state-history-helper')
+const txStateHistoryHelper = require('../../app/scripts/controllers/transactions/lib/tx-state-history-helper')
 const testVault = require('../data/v17-long-history.json')
 
 
diff --git a/test/unit/tx-state-manager-test.js b/test/unit/tx-state-manager-test.js
index a5ac13664..e5fe68d0b 100644
--- a/test/unit/tx-state-manager-test.js
+++ b/test/unit/tx-state-manager-test.js
@@ -1,8 +1,8 @@
 const assert = require('assert')
 const clone = require('clone')
 const ObservableStore = require('obs-store')
-const TxStateManager = require('../../app/scripts/lib/tx-state-manager')
-const txStateHistoryHelper = require('../../app/scripts/lib/tx-state-history-helper')
+const TxStateManager = require('../../app/scripts/controllers/transactions/tx-state-manager')
+const txStateHistoryHelper = require('../../app/scripts/controllers/transactions/lib/tx-state-history-helper')
 const noop = () => true
 
 describe('TransactionStateManager', function () {
diff --git a/test/unit/tx-utils-test.js b/test/unit/tx-utils-test.js
index 8ca13412e..be16225ba 100644
--- a/test/unit/tx-utils-test.js
+++ b/test/unit/tx-utils-test.js
@@ -1,77 +1,98 @@
 const assert = require('assert')
-const Transaction = require('ethereumjs-tx')
-const BN = require('bn.js')
-
-
-const { hexToBn, bnToHex } = require('../../app/scripts/lib/util')
-const TxUtils = require('../../app/scripts/lib/tx-gas-utils')
+const txUtils = require('../../app/scripts/controllers/transactions/lib/util')
 
 
 describe('txUtils', function () {
-  let txUtils
-
-  before(function () {
-    txUtils = new TxUtils(new Proxy({}, {
-      get: (obj, name) => {
-        return () => {}
-      },
-    }))
-  })
+  describe('#validateTxParams', function () {
+    it('does not throw for positive values', function () {
+      var sample = {
+        from: '0x1678a085c290ebd122dc42cba69373b5953b831d',
+        value: '0x01',
+      }
+      txUtils.validateTxParams(sample)
+    })
 
-  describe('chain Id', function () {
-    it('prepares a transaction with the provided chainId', function () {
-      const txParams = {
-        to: '0x70ad465e0bab6504002ad58c744ed89c7da38524',
-        from: '0x69ad465e0bab6504002ad58c744ed89c7da38525',
-        value: '0x0',
-        gas: '0x7b0c',
-        gasPrice: '0x199c82cc00',
-        data: '0x',
-        nonce: '0x3',
-        chainId: 42,
+    it('returns error for negative values', function () {
+      var sample = {
+        from: '0x1678a085c290ebd122dc42cba69373b5953b831d',
+        value: '-0x01',
+      }
+      try {
+        txUtils.validateTxParams(sample)
+      } catch (err) {
+        assert.ok(err, 'error')
       }
-      const ethTx = new Transaction(txParams)
-      assert.equal(ethTx.getChainId(), 42, 'chainId is set from tx params')
     })
   })
 
-  describe('addGasBuffer', function () {
-    it('multiplies by 1.5, when within block gas limit', function () {
-      // naive estimatedGas: 0x16e360 (1.5 mil)
-      const inputHex = '0x16e360'
-      // dummy gas limit: 0x3d4c52 (4 mil)
-      const blockGasLimitHex = '0x3d4c52'
-      const output = txUtils.addGasBuffer(inputHex, blockGasLimitHex)
-      const inputBn = hexToBn(inputHex)
-      const outputBn = hexToBn(output)
-      const expectedBn = inputBn.muln(1.5)
-      assert(outputBn.eq(expectedBn), 'returns 1.5 the input value')
+  describe('#normalizeTxParams', () => {
+    it('should normalize txParams', () => {
+      let txParams = {
+        chainId: '0x1',
+        from: 'a7df1beDBF813f57096dF77FCd515f0B3900e402',
+        to: null,
+        data: '68656c6c6f20776f726c64',
+        random: 'hello world',
+      }
+
+      let normalizedTxParams = txUtils.normalizeTxParams(txParams)
+
+      assert(!normalizedTxParams.chainId, 'their should be no chainId')
+      assert(!normalizedTxParams.to, 'their should be no to address if null')
+      assert.equal(normalizedTxParams.from.slice(0, 2), '0x', 'from should be hexPrefixd')
+      assert.equal(normalizedTxParams.data.slice(0, 2), '0x', 'data should be hexPrefixd')
+      assert(!('random' in normalizedTxParams), 'their should be no random key in normalizedTxParams')
+
+      txParams.to = 'a7df1beDBF813f57096dF77FCd515f0B3900e402'
+      normalizedTxParams = txUtils.normalizeTxParams(txParams)
+      assert.equal(normalizedTxParams.to.slice(0, 2), '0x', 'to should be hexPrefixd')
+
     })
+  })
 
-    it('uses original estimatedGas, when above block gas limit', function () {
-      // naive estimatedGas: 0x16e360 (1.5 mil)
-      const inputHex = '0x16e360'
-      // dummy gas limit: 0x0f4240 (1 mil)
-      const blockGasLimitHex = '0x0f4240'
-      const output = txUtils.addGasBuffer(inputHex, blockGasLimitHex)
-      // const inputBn = hexToBn(inputHex)
-      const outputBn = hexToBn(output)
-      const expectedBn = hexToBn(inputHex)
-      assert(outputBn.eq(expectedBn), 'returns the original estimatedGas value')
+  describe('#validateRecipient', () => {
+    it('removes recipient for txParams with 0x when contract data is provided', function () {
+      const zeroRecipientandDataTxParams = {
+        from: '0x1678a085c290ebd122dc42cba69373b5953b831d',
+        to: '0x',
+        data: 'bytecode',
+      }
+      const sanitizedTxParams = txUtils.validateRecipient(zeroRecipientandDataTxParams)
+      assert.deepEqual(sanitizedTxParams, { from: '0x1678a085c290ebd122dc42cba69373b5953b831d', data: 'bytecode' }, 'no recipient with 0x')
     })
 
-    it('buffers up to recommend gas limit recommended ceiling', function () {
-      // naive estimatedGas: 0x16e360 (1.5 mil)
-      const inputHex = '0x16e360'
-      // dummy gas limit: 0x1e8480 (2 mil)
-      const blockGasLimitHex = '0x1e8480'
-      const blockGasLimitBn = hexToBn(blockGasLimitHex)
-      const ceilGasLimitBn = blockGasLimitBn.muln(0.9)
-      const output = txUtils.addGasBuffer(inputHex, blockGasLimitHex)
-      // const inputBn = hexToBn(inputHex)
-      // const outputBn = hexToBn(output)
-      const expectedHex = bnToHex(ceilGasLimitBn)
-      assert.equal(output, expectedHex, 'returns the gas limit recommended ceiling value')
+    it('should error when recipient is 0x', function () {
+      const zeroRecipientTxParams = {
+        from: '0x1678a085c290ebd122dc42cba69373b5953b831d',
+        to: '0x',
+      }
+      assert.throws(() => { txUtils.validateRecipient(zeroRecipientTxParams) }, Error, 'Invalid recipient address')
     })
   })
-})
\ No newline at end of file
+
+
+  describe('#validateFrom', () => {
+    it('should error when from is not a hex string', function () {
+
+      // where from is undefined
+      const txParams = {}
+      assert.throws(() => { txUtils.validateFrom(txParams) }, Error, `Invalid from address ${txParams.from} not a string`)
+
+      // where from is array
+      txParams.from = []
+      assert.throws(() => { txUtils.validateFrom(txParams) }, Error, `Invalid from address ${txParams.from} not a string`)
+
+      // where from is a object
+      txParams.from = {}
+      assert.throws(() => { txUtils.validateFrom(txParams) }, Error, `Invalid from address ${txParams.from} not a string`)
+
+      // where from is a invalid address
+      txParams.from = 'im going to fail'
+      assert.throws(() => { txUtils.validateFrom(txParams) }, Error, `Invalid from address`)
+
+      // should run
+      txParams.from ='0x1678a085c290ebd122dc42cba69373b5953b831d'
+      txUtils.validateFrom(txParams)
+      })
+  })
+})