1 files changed, 33 insertions, 0 deletions
diff --git a/test/unit/metamask-controller-test.js b/test/unit/metamask-controller-test.js
index ef6cae758..fd420a70f 100644
--- a/test/unit/metamask-controller-test.js
+++ b/test/unit/metamask-controller-test.js
@@ -11,6 +11,15 @@ describe('MetaMaskController', function () {
     unlockAccountMessage: noop,
     showUnapprovedTx: noop,
     platform: {},
+    encryptor: {
+      encrypt: function(password, object) {
+        this.object = object
+        return Promise.resolve()
+      },
+      decrypt: function () {
+        return Promise.resolve(this.object)
+      }
+    },
     // initial state
     initState: clone(firstTimeState),
   })
@@ -27,6 +36,30 @@ describe('MetaMaskController', function () {
 
   describe('Metamask Controller', function () {
     assert(metamaskController)
+
+    beforeEach(function () {
+      sinon.spy(metamaskController.keyringController, 'createNewVaultAndKeychain')
+    })
+
+    afterEach(function () {
+      metamaskController.keyringController.createNewVaultAndKeychain.restore()
+    })
+
+    describe('#createNewVaultAndKeychain', function () {
+      it('can only create new vault on keyringController once', async function () {
+
+        const selectStub = sinon.stub(metamaskController, 'selectFirstIdentity')
+
+        const password = 'a-fake-password'
+
+        const first = await metamaskController.createNewVaultAndKeychain(password)
+        const second = await metamaskController.createNewVaultAndKeychain(password)
+
+        assert(metamaskController.keyringController.createNewVaultAndKeychain.calledOnce)
+
+        selectStub.reset()
+      })
+    })
   })
 })