Add tests for removeElementFromParent

2020-06-04 07:32:34 -07:00
parent 15f1759580
commit a1dc0d1936
1 changed files with 41 additions and 0 deletions
@@ -0,0 +1,41 @@
+/**
+ * Copyright (c) 2020 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import jsdom = require('jsdom');
+import { removeElementFromParent } from 'browser/Dom';
+import { strictEqual, doesNotThrow } from 'assert';
+
+describe('Dom', () => {
+  const dom = new jsdom.JSDOM();
+  const document = dom.window.document;
+
+  describe('removeElementFromParent', () => {
+    it('should remove single child', () => {
+      const e = document.createElement('div');
+      document.body.appendChild(e);
+      strictEqual(e.parentElement, document.body);
+      removeElementFromParent(e);
+      strictEqual(e.parentElement, null);
+    });
+    it('should remove multiple elements', () => {
+      const e1 = document.createElement('div');
+      const e2 = document.createElement('div');
+      document.body.appendChild(e1);
+      document.body.appendChild(e2);
+      strictEqual(e1.parentElement, document.body);
+      strictEqual(e2.parentElement, document.body);
+      removeElementFromParent(e1, e2);
+      strictEqual(e1.parentElement, null);
+      strictEqual(e2.parentElement, null);
+    });
+    it('should not throw on undefined', () => {
+      const e = document.createElement('div');
+      document.body.appendChild(e);
+      strictEqual(e.parentElement, document.body);
+      doesNotThrow(() => removeElementFromParent(undefined, e));
+      strictEqual(e.parentElement, null);
+    });
+  });
+});