migration 27 - remove rejected transactions from state

app/scripts/migrations/027.js

@@ -0,0 +1,35 @@
+// next version number
+const version = 27
+
+/*
+
+normalizes txParams on unconfirmed txs
+
+*/
+const clone = require('clone')
+
+module.exports = {
+  version,
+
+  migrate: async function (originalVersionedData) {
+    const versionedData = clone(originalVersionedData)
+    versionedData.meta.version = version
+    const state = versionedData.data
+    const newState = transformState(state)
+    versionedData.data = newState
+    return versionedData
+  },
+}
+
+function transformState (state) {
+  const newState = state
+
+  if (newState.TransactionController) {
+    if (newState.TransactionController.transactions) {
+      const transactions = newState.TransactionController.transactions
+      newState.TransactionController.transactions = transactions.filter((txMeta) => txMeta.status !== 'rejected')
+    }
+  }
+
+  return newState
+}

test/unit/migrations/027-test.js

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+const assert = require('assert')
+const migration27 = require('../../../app/scripts/migrations/027')
+
+const oldStorage = {
+  "meta": {},
+  "data": {
+    "TransactionController": {
+      "transactions": [
+      ]
+    },
+  },
+}
+
+const transactions = []
+
+
+while (transactions.length < 9) {
+  transactions.push({status: 'rejected'})
+  transactions.push({status: 'unapproved'})
+  transactions.push({status: 'approved'})
+}
+
+
+oldStorage.data.TransactionController.transactions = transactions
+
+describe('migration #27', () => {
+  it('should remove rejected transactions', (done) => {
+    migration27.migrate(oldStorage)
+      .then((newStorage) => {
+        const newTransactions = newStorage.data.TransactionController.transactions
+        assert.equal(newTransactions.length, 6, 'transactions is expected to have the length of 6')
+        newTransactions.forEach((txMeta) => {
+          if (txMeta.status === 'rejected') done(new Error('transaction was found with a status of rejected'))
+        })
+        done()
+      })
+      .catch(done)
+  })
+
+  it('should successfully migrate first time state', (done) => {
+    migration27.migrate({
+      meta: {},
+      data: require('../../../app/scripts/first-time-state'),
+    })
+      .then((migratedData) => {
+        assert.equal(migratedData.meta.version, migration27.version)
+        done()
+      }).catch(done)
+  })
+})