migration for removing unnecessary transactions from state

2 files changed, 102 insertions, 3 deletions

diff --git a/test/unit/migrations/023-test.js b/test/unit/migrations/023-test.js
new file mode 100644
index 000000000..be432d9fa
--- /dev/null
+++ b/test/unit/migrations/023-test.js
@@ -0,0 +1,99 @@
+const assert = require('assert')
+const migration23 = require('../../../app/scripts/migrations/023')
+const properTime = (new Date()).getTime()
+const storage = {
+  "meta": {},
+  "data": {
+    "TransactionController": {
+      "transactions": [
+      ]
+    },
+  },
+}
+
+const transactions = []
+const transactions40 = []
+const transactions20 = []
+
+const txStates = [
+  'unapproved',
+  'approved',
+  'signed',
+  'submitted',
+  'confirmed',
+  'rejected',
+  'failed',
+  'dropped',
+]
+
+const deletableTxStates = [
+  'confirmed',
+  'rejected',
+  'failed',
+  'dropped',
+]
+
+let nonDeletableCount = 0
+
+let status
+while (transactions.length <= 100) {
+  status = txStates[Math.floor(Math.random() * Math.floor(txStates.length - 1))]
+  if (!deletableTxStates.find((s) => s === status)) nonDeletableCount++
+  transactions.push({status})
+}
+
+while (transactions40.length < 40) {
+  status = txStates[Math.floor(Math.random() * Math.floor(txStates.length - 1))]
+  transactions40.push({status})
+}
+
+while (transactions20.length < 20) {
+  status = txStates[Math.floor(Math.random() * Math.floor(txStates.length - 1))]
+  transactions20.push({status})
+}
+
+
+
+storage.data.TransactionController.transactions = transactions
+
+describe('storage is migrated successfully and the proper transactions are remove from state', () => {
+  it('should remove transactions that are unneeded', (done) => {
+    migration23.migrate(storage)
+    .then((migratedData) => {
+      let leftoverNonDeletableTxCount = 0
+      const migratedTransactions = migratedData.data.TransactionController.transactions
+      migratedTransactions.forEach((tx) => {
+        if (!deletableTxStates.find((s) => s === tx.status)) {
+          leftoverNonDeletableTxCount++
+        }
+      })
+      assert.equal(leftoverNonDeletableTxCount, nonDeletableCount, 'migration shouldnt delete transactions we want to keep')
+      assert((migratedTransactions.length >= 40), `should be equal or greater to 40 if they are non deletable states got ${migratedTransactions.length} transactions`)
+      done()
+    }).catch(done)
+  })
+
+  it('should not remove any transactions because 40 is the expectable limit', (done) => {
+    storage.meta.version = 22
+    storage.data.TransactionController.transactions = transactions40
+    migration23.migrate(storage)
+    .then((migratedData) => {
+      const migratedTransactions = migratedData.data.TransactionController.transactions
+
+      assert.equal(migratedTransactions.length, 40, 'migration shouldnt delete when at limit')
+      done()
+    }).catch(done)
+  })
+
+  it('should not remove any transactions because 20 txs is under the expectable limit', (done) => {
+    storage.meta.version = 22
+    storage.data.TransactionController.transactions = transactions20
+    migration23.migrate(storage)
+    .then((migratedData) => {
+      const migratedTransactions = migratedData.data.TransactionController.transactions
+      assert.equal(migratedTransactions.length, 20, 'migration shouldnt delete when under limit')
+      done()
+    }).catch(done)
+  })
+
+})
diff --git a/test/unit/tx-state-manager-test.js b/test/unit/tx-state-manager-test.js
index 220bf501f..a5ac13664 100644
--- a/test/unit/tx-state-manager-test.js
+++ b/test/unit/tx-state-manager-test.js
@@ -240,12 +240,12 @@ describe('TransactionStateManager', function () {
   })
 
   describe('#wipeTransactions', function () {
-    
+
     const specificAddress = '0xaa'
     const otherAddress = '0xbb'
 
     it('should remove only the transactions from a specific address', function () {
-      
+
       const txMetas = [
         { id: 0, status: 'unapproved', txParams: { from: specificAddress, to: otherAddress }, metamaskNetworkId: currentNetworkId },
         { id: 1, status: 'confirmed', txParams: { from: otherAddress, to: specificAddress }, metamaskNetworkId: currentNetworkId },
@@ -268,7 +268,7 @@ describe('TransactionStateManager', function () {
         { id: 1, status: 'confirmed', txParams: { from: specificAddress, to: otherAddress }, metamaskNetworkId: otherNetworkId },
         { id: 2, status: 'confirmed', txParams: { from: specificAddress, to: otherAddress }, metamaskNetworkId: otherNetworkId },
       ]
-      
+
       txMetas.forEach((txMeta) => txStateManager.addTx(txMeta, noop))
 
       txStateManager.wipeTransactions(specificAddress)