Fix applyAddon test

src/Terminal.test.ts

@@ -5,7 +5,6 @@
 
 import { assert, expect } from 'chai';
 import { Terminal } from './Terminal';
-import * as attach from './addons/attach/attach';
 import { MockViewport, MockCompositionHelper, MockRenderer } from './utils/TestUtils.test';
 import { CHAR_DATA_CHAR_INDEX, CHAR_DATA_WIDTH_INDEX } from './Buffer';
 
@@ -52,13 +51,6 @@ describe('term.js addons', () => {
     });
   });
 
-  it('should apply addons with Terminal.applyAddon', () => {
-    Terminal.applyAddon(attach);
-    // Test that addon was applied successfully, adding attach to Terminal's
-    // prototype.
-    assert.equal(typeof (<any>Terminal).prototype.attach, 'function');
-  });
-
   describe('getOption', () => {
     it('should retrieve the option correctly', () => {
       // In the `options` namespace.

src/public/Terminal.test.ts

@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) 2016 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { assert } from 'chai';
+import { Terminal } from './Terminal';
+import * as attach from '../addons/attach/attach';
+
+describe('Terminal', () => {
+  it('should apply addons with Terminal.applyAddon', () => {
+    Terminal.applyAddon(attach);
+    // Test that addon was applied successfully, adding attach to Terminal's
+    // prototype.
+    assert.equal(typeof (<any>Terminal).prototype.attach, 'function');
+  });
+});