Merge pull request #4235 from scsaba/transaction-history-timestamps

Transaction history timestamps

app/scripts/controllers/transactions/lib/tx-state-history-helper.js

@@ -25,26 +25,31 @@ function migrateFromSnapshotsToDiffs (longHistory) {
 }
 
 /**
-  generates an array of history objects sense the previous state.
-  The object has the keys opp(the operation preformed),
-  path(the key and if a nested object then each key will be seperated with a `/`)
+  Generates an array of history objects sense the previous state.
+  The object has the keys
+    op (the operation performed),
+    path (the key and if a nested object then each key will be seperated with a `/`)
     value
-  with the first entry having the note
+  with the first entry having the note and a timestamp when the change took place
   @param previousState {object} - the previous state of the object
   @param newState {object} - the update object
   @param note {string} - a optional note for the state change
-  @reurns {array}
+  @returns {array}
 */
 function generateHistoryEntry (previousState, newState, note) {
   const entry = jsonDiffer.compare(previousState, newState)
   // Add a note to the first op, since it breaks if we append it to the entry
-  if (note && entry[0]) entry[0].note = note
+  if (entry[0]) {
+    if (note) entry[0].note = note
+
+    entry[0].timestamp = Date.now()
+  }
   return entry
 }
 
 /**
   Recovers previous txMeta state obj
-  @return {object}
+  @returns {object}
 */
 function replayHistory (_shortHistory) {
   const shortHistory = clone(_shortHistory)

app/scripts/controllers/transactions/tx-state-manager.js

@@ -158,7 +158,7 @@ class TransactionStateManager extends EventEmitter {
   /**
     updates the txMeta in the list and adds a history entry
     @param txMeta {Object} - the txMeta to update
-    @param [note] {string} - a not about the update for history
+    @param [note] {string} - a note about the update for history
   */
   updateTx (txMeta, note) {
     // validate txParams

test/unit/tx-state-history-helper-test.js

@@ -1,8 +1,10 @@
 const assert = require('assert')
-const clone = require('clone')
 const txStateHistoryHelper = require('../../app/scripts/controllers/transactions/lib/tx-state-history-helper')
+const testVault = require('../data/v17-long-history.json')
 
-describe('deepCloneFromTxMeta', function () {
+describe ('Transaction state history helper', function () {
+
+  describe('#snapshotFromTxMeta', function () {
     it('should clone deep', function () {
       const input = {
         foo: {
@@ -23,4 +25,105 @@ describe('deepCloneFromTxMeta', function () {
       const output = txStateHistoryHelper.snapshotFromTxMeta(input)
       assert(typeof output.history, 'undefined', 'should remove history')
     })
+  })
+
+  describe('#migrateFromSnapshotsToDiffs', function () {
+    it('migrates history to diffs and can recover original values', function () {
+      testVault.data.TransactionController.transactions.forEach((tx, index) => {
+        const newHistory = txStateHistoryHelper.migrateFromSnapshotsToDiffs(tx.history)
+        newHistory.forEach((newEntry, index) => {
+          if (index === 0) {
+            assert.equal(Array.isArray(newEntry), false, 'initial history item IS NOT a json patch obj')
+          } else {
+            assert.equal(Array.isArray(newEntry), true, 'non-initial history entry IS a json patch obj')
+          }
+          const oldEntry = tx.history[index]
+          const historySubset = newHistory.slice(0, index + 1)
+          const reconstructedValue = txStateHistoryHelper.replayHistory(historySubset)
+          assert.deepEqual(oldEntry, reconstructedValue, 'was able to reconstruct old entry from diffs')
+        })
+      })
+    })
+  })
+
+  describe('#replayHistory', function () {
+    it('replaying history does not mutate the original obj', function () {
+      const initialState = { test: true, message: 'hello', value: 1 }
+      const diff1 = [{
+        "op": "replace",
+        "path": "/message",
+        "value": "haay",
+      }]
+      const diff2 = [{
+        "op": "replace",
+        "path": "/value",
+        "value": 2,
+      }]
+      const history = [initialState, diff1, diff2]
+
+      const beforeStateSnapshot = JSON.stringify(initialState)
+      const latestState = txStateHistoryHelper.replayHistory(history)
+      const afterStateSnapshot = JSON.stringify(initialState)
+
+      assert.notEqual(initialState, latestState, 'initial state is not the same obj as the latest state')
+      assert.equal(beforeStateSnapshot, afterStateSnapshot, 'initial state is not modified during run')
+    })
+  })
+
+  describe('#generateHistoryEntry', function () {
+
+    function generateHistoryEntryTest(note) {
+
+      const prevState = {
+        someValue: 'value 1',
+        foo: {
+          bar: {
+            bam: 'baz'
+          }
+        }
+      }
+
+      const nextState = {
+        newPropRoot: 'new property - root',
+        someValue: 'value 2',
+        foo: {
+          newPropFirstLevel: 'new property - first level',
+          bar: {
+            bam: 'baz'
+          }
+        }
+      }
+
+      const before = new Date().getTime()
+      const result = txStateHistoryHelper.generateHistoryEntry(prevState, nextState, note)
+      const after = new Date().getTime()
+
+      assert.ok(Array.isArray(result))
+      assert.equal(result.length, 3)
+
+      const expectedEntry1 = { op: 'add', path: '/foo/newPropFirstLevel', value: 'new property - first level' }
+      assert.equal(result[0].op, expectedEntry1.op)
+      assert.equal(result[0].path, expectedEntry1.path)
+      assert.equal(result[0].value, expectedEntry1.value)
+      assert.equal(result[0].value, expectedEntry1.value)
+      if (note) 
+        assert.equal(result[0].note, note)
+
+      assert.ok(result[0].timestamp >= before && result[0].timestamp <= after)
+
+      const expectedEntry2 = { op: 'replace', path: '/someValue', value: 'value 2' }
+      assert.deepEqual(result[1], expectedEntry2)
+
+      const expectedEntry3 = { op: 'add', path: '/newPropRoot', value: 'new property - root' }
+      assert.deepEqual(result[2], expectedEntry3)
+    }
+
+    it('should generate history entries', function () {
+      generateHistoryEntryTest()
+    })
+
+    it('should add note to first entry', function () {
+      generateHistoryEntryTest('custom note')
+    })    
+  })
 })

test/unit/tx-state-history-helper.js

@@ -1,46 +0,0 @@
-const assert = require('assert')
-const txStateHistoryHelper = require('../../app/scripts/controllers/transactions/lib/tx-state-history-helper')
-const testVault = require('../data/v17-long-history.json')
-
-
-describe('tx-state-history-helper', function () {
-  it('migrates history to diffs and can recover original values', function () {
-    testVault.data.TransactionController.transactions.forEach((tx, index) => {
-      const newHistory = txStateHistoryHelper.migrateFromSnapshotsToDiffs(tx.history)
-      newHistory.forEach((newEntry, index) => {
-        if (index === 0) {
-          assert.equal(Array.isArray(newEntry), false, 'initial history item IS NOT a json patch obj')
-        } else {
-          assert.equal(Array.isArray(newEntry), true, 'non-initial history entry IS a json patch obj')
-        }
-        const oldEntry = tx.history[index]
-        const historySubset = newHistory.slice(0, index + 1)
-        const reconstructedValue = txStateHistoryHelper.replayHistory(historySubset)
-        assert.deepEqual(oldEntry, reconstructedValue, 'was able to reconstruct old entry from diffs')
-      })
-    })
-  })
-
-  it('replaying history does not mutate the original obj', function () {
-    const initialState = { test: true, message: 'hello', value: 1 }
-    const diff1 = [{
-      "op": "replace",
-      "path": "/message",
-      "value": "haay",
-    }]
-    const diff2 = [{
-      "op": "replace",
-      "path": "/value",
-      "value": 2,
-    }]
-    const history = [initialState, diff1, diff2]
-
-    const beforeStateSnapshot = JSON.stringify(initialState)
-    const latestState = txStateHistoryHelper.replayHistory(history)
-    const afterStateSnapshot = JSON.stringify(initialState)
-
-    assert.notEqual(initialState, latestState, 'initial state is not the same obj as the latest state')
-    assert.equal(beforeStateSnapshot, afterStateSnapshot, 'initial state is not modified during run')
-  })
-
-})

test/unit/tx-state-manager-test.js

@@ -176,14 +176,21 @@ describe('TransactionStateManager', function () {
       assert.deepEqual(updatedTx.history[0], txStateHistoryHelper.snapshotFromTxMeta(updatedTx), 'first history item is initial state')
       // modify value and updateTx
       updatedTx.txParams.gasPrice = desiredGasPrice
+      const before = new Date().getTime()
       txStateManager.updateTx(updatedTx)
+      const after = new Date().getTime()
       // check updated value
       const result = txStateManager.getTx('1')
       assert.equal(result.txParams.gasPrice, desiredGasPrice, 'gas price updated')
       // validate history was updated
       assert.equal(result.history.length, 2, 'two history items (initial + diff)')
+      assert.equal(result.history[1].length, 1, 'two history state items (initial + diff)')
+      
       const expectedEntry = { op: 'replace', path: '/txParams/gasPrice', value: desiredGasPrice }
-      assert.deepEqual(result.history[1], [expectedEntry], 'two history items (initial + diff)')
+      assert.deepEqual(result.history[1][0].op, expectedEntry.op, 'two history items (initial + diff) operation')
+      assert.deepEqual(result.history[1][0].path, expectedEntry.path, 'two history items (initial + diff) path')
+      assert.deepEqual(result.history[1][0].value, expectedEntry.value, 'two history items (initial + diff) value')
+      assert.ok(result.history[1][0].timestamp >= before && result.history[1][0].timestamp <= after)
     })
   })