From 6a770296f9c8c1c2b5f2893ed7ff241dbaa57fdf Mon Sep 17 00:00:00 2001
From: Daniel Imms <daimms@microsoft.com>
Date: Mon, 6 Aug 2018 07:22:32 -0700
Subject: [PATCH] Add tests for Dispoable

---
 src/common/Lifecycle.test.ts | 45 ++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 src/common/Lifecycle.test.ts

diff --git a/src/common/Lifecycle.test.ts b/src/common/Lifecycle.test.ts
new file mode 100644
index 00000000..4b696fa5
--- /dev/null
+++ b/src/common/Lifecycle.test.ts
@@ -0,0 +1,45 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { assert } from 'chai';
+import { Disposable } from './Lifecycle';
+
+class TestDisposable extends Disposable {
+  public get isDisposed(): boolean {
+    return this._isDisposed;
+  }
+}
+
+describe('Disposable', () => {
+  describe('register', () => {
+    it('should register disposables', () => {
+      const d = new TestDisposable();
+      const d2 = {
+        dispose: () => { throw new Error(); }
+      };
+      d.register(d2);
+      assert.throws(() => d.dispose());
+    });
+  });
+  describe('unregister', () => {
+    it('should unregister disposables', () => {
+      const d = new TestDisposable();
+      const d2 = {
+        dispose: () => { throw new Error(); }
+      };
+      d.register(d2);
+      d.unregister(d2);
+      assert.doesNotThrow(() => d.dispose());
+    });
+  });
+  describe('dispose', () => {
+    it('should set is disposed flag', () => {
+      const d = new TestDisposable();
+      assert.isFalse(d.isDisposed);
+      d.dispose();
+      assert.isTrue(d.isDisposed);
+    });
+  });
+});