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, 25 insertions, 0 deletions

diff --git a/test/unit/components/binary-renderer-test.js b/test/unit/components/binary-renderer-test.js
new file mode 100644
index 000000000..3264faddc
--- /dev/null
+++ b/test/unit/components/binary-renderer-test.js
@@ -0,0 +1,25 @@
+var assert = require('assert')
+var BinaryRenderer = require('../../../ui/app/components/binary-renderer')
+
+describe('BinaryRenderer', function() {
+
+  let binaryRenderer
+  const message = 'Hello, world!'
+  const buffer = new Buffer(message, 'utf8')
+  const hex = buffer.toString('hex')
+
+  beforeEach(function() {
+    binaryRenderer = new BinaryRenderer()
+  })
+
+  it('recovers message', function() {
+    const result = binaryRenderer.hexToText(hex)
+    assert.equal(result, message)
+  })
+
+
+  it('recovers message with hex prefix', function() {
+    const result = binaryRenderer.hexToText('0x' + hex)
+    assert.equal(result, message)
+  })
+})