Implement some cross-browser practices (#473)

* Add mozilla plugin key to manifest

* Move all chrome references into platform-checking module

Addresses #453

* Add chrome global back to linter blacklist

* Add tests

1 files changed, 39 insertions, 0 deletions

diff --git a/test/unit/extension-test.js b/test/unit/extension-test.js
new file mode 100644
index 000000000..0a03a3b97
--- /dev/null
+++ b/test/unit/extension-test.js
@@ -0,0 +1,39 @@
+var assert = require('assert')
+var sinon = require('sinon')
+const ethUtil = require('ethereumjs-util')
+
+var path = require('path')
+var Extension = require(path.join(__dirname, '..', '..', 'app', 'scripts', 'lib', 'extension-instance.js'))
+
+describe('extension', function() {
+
+  describe('with chrome global', function() {
+    let extension
+
+    beforeEach(function() {
+      window.chrome = {
+        alarms: 'foo'
+      }
+      extension = new Extension()
+    })
+
+    it('should use the chrome global apis', function() {
+      assert.equal(extension.alarms, 'foo')
+    })
+  })
+
+  describe('without chrome global', function() {
+    let extension
+
+    beforeEach(function() {
+      window.chrome = undefined
+      window.alarms = 'foo'
+      extension = new Extension()
+    })
+
+    it('should use the global apis', function() {
+      assert.equal(extension.alarms, 'foo')
+    })
+  })
+
+})