3 files changed, 41 insertions, 0 deletions
diff --git a/app/scripts/migrations/013.js b/app/scripts/migrations/013.js
new file mode 100644
index 000000000..8f11e510e
--- /dev/null
+++ b/app/scripts/migrations/013.js
@@ -0,0 +1,34 @@
+const version = 13
+
+/*
+
+This migration modifies the network config from ambiguous 'testnet' to explicit 'ropsten'
+
+*/
+
+const clone = require('clone')
+
+module.exports = {
+  version,
+
+  migrate: function (originalVersionedData) {
+    const versionedData = clone(originalVersionedData)
+    versionedData.meta.version = version
+    try {
+      const state = versionedData.data
+      const newState = transformState(state)
+      versionedData.data = newState
+    } catch (err) {
+      console.warn(`MetaMask Migration #${version}` + err.stack)
+    }
+    return Promise.resolve(versionedData)
+  },
+}
+
+function transformState (state) {
+  const newState = state
+  if (newState.config.provider.type === 'testnet') {
+    newState.config.provider.type = 'ropsten'
+  }
+  return newState
+}
diff --git a/app/scripts/migrations/index.js b/app/scripts/migrations/index.js
index 019b4d13d..3a95cf88e 100644
--- a/app/scripts/migrations/index.js
+++ b/app/scripts/migrations/index.js
@@ -23,4 +23,5 @@ module.exports = [
   require('./010'),
   require('./011'),
   require('./012'),
+  require('./013'),
 ]
diff --git a/test/unit/migrations-test.js b/test/unit/migrations-test.js
index 324e4d056..5bad25a45 100644
--- a/test/unit/migrations-test.js
+++ b/test/unit/migrations-test.js
@@ -16,6 +16,7 @@ const migration9 = require(path.join('..', '..', 'app', 'scripts', 'migrations',
 const migration10 = require(path.join('..', '..', 'app', 'scripts', 'migrations', '010'))
 const migration11 = require(path.join('..', '..', 'app', 'scripts', 'migrations', '011'))
 const migration12 = require(path.join('..', '..', 'app', 'scripts', 'migrations', '012'))
+const migration13 = require(path.join('..', '..', 'app', 'scripts', 'migrations', '013'))
 
 
 const oldTestRpc = 'https://rawtestrpc.metamask.io/'
@@ -97,6 +98,11 @@ describe('wallet1 is migrated successfully', () => {
     }).then((twelfthResult) => {
       assert.equal(twelfthResult.data.NoticeController.noticesList[0].body, '', 'notices that have been read should have an empty body.')
       assert.equal(twelfthResult.data.NoticeController.noticesList[1].body, 'nonempty', 'notices that have not been read should not have an empty body.')
+
+      assert.equal(twelfthResult.data.config.provider.type, 'testnet', 'network is originally testnet.')
+      return migration13.migrate(twelfthResult)
+    }).then((thirteenthResult) => {
+      assert.equal(thirteenthResult.data.config.provider.type, 'ropsten', 'network has been changed to ropsten.')
     })
   })
 })