Render personal_sign messages as utf-8 text

Calls to `personal_sign` are now:

- When hex encoded, preserved as hex encoded, but displayed as utf-8 text.
- When not hex encoded, decoded as utf-8 text as hex for signing.
- The messages proposed for signing are displayed as UTF-8 text.
- When the message cannot be rendered as UTF-8 text, it is displayed as hexadecimal.

Fixes #1173

1 files changed, 22 insertions, 1 deletions

diff --git a/test/unit/personal-message-manager-test.js b/test/unit/personal-message-manager-test.js
index 657d5e675..69d373ed3 100644
--- a/test/unit/personal-message-manager-test.js
+++ b/test/unit/personal-message-manager-test.js
@@ -4,7 +4,7 @@ const EventEmitter = require('events')
 
 const PersonalMessageManager = require('../../app/scripts/lib/personal-message-manager')
 
-describe('Transaction Manager', function() {
+describe('Personal Message Manager', function() {
   let messageManager
 
   beforeEach(function() {
@@ -86,4 +86,25 @@ describe('Transaction Manager', function() {
       assert.equal(messageManager.getMsg('2').status, 'approved')
     })
   })
+
+  describe('#normalizeMsgData', function() {
+    it('converts text to a utf8 buffer', function() {
+      var input = 'hello'
+      var output = messageManager.normalizeMsgdata(input)
+      assert.equal(output, '68656c6c6f', 'predictably hex encoded')
+    })
+
+    it('tolerates a hex prefix', function() {
+      var input = '0x12'
+      var output = messageManager.normalizeMsgdata(input)
+      assert.equal(output, '12', 'prefix stripped')
+    })
+
+    it('tolerates normal hex', function() {
+      var input = '12'
+      var output = messageManager.normalizeMsgdata(input)
+      assert.equal(output, '12', 'not modified')
+    })
+  })
+
 })