Add missing isSelected command to new Element API.

lib/api/web-element/commands/isSelected.js

@@ -0,0 +1,37 @@
+/**
+ * Determines if an element is selected.
+ *
+ * For more info on working with DOM elements in Nightwatch, refer to the <a href="https://nightwatchjs.org/guide/writing-tests/finding-interacting-with-dom-elements.html">Finding & interacting with DOM Elements</a> guide page.
+ *
+ * @example
+ * describe('isSelected Demo', function() {
+ *
+ *   it('test isSelected', function(browser) {
+ *     browser
+ *       .element('#search')
+ *       .isSelected(function callback(result) {
+ *         assert.equal(result.value, true);
+ *       });
+ *   });
+ *
+ * it('test async isSelected', async function(browser) {
+ *     const result = await browser
+ *       .element('#search')
+ *       .isSelected();
+ *      assert.equal(result, true)
+ *   });
+ *
+ *   after(browser => browser.end());
+ * });
+ *
+ * @since 3.0.0
+ * @method isSelected
+ * @memberof ScopedWebElement
+ * @instance
+ * @syntax browser.element(selector).isSelected()
+ * @see https://www.w3.org/TR/webdriver/#is-element-selected
+ * @returns {ScopedValue<boolean>}
+ */
+module.exports.command = function () {
+  return this.runQueuedCommandScoped('isElementSelected');
+};

test/src/api/commands/web-element/testIsSelected.js

@@ -0,0 +1,46 @@
+const assert = require('assert');
+const MockServer  = require('../../../../lib/mockserver.js');
+const CommandGlobals = require('../../../../lib/globals/commands.js');
+
+describe('element().isSelected() command', function() {
+  before(function (done) {
+    CommandGlobals.beforeEach.call(this, done);
+  });
+
+  after(function(done) {
+    CommandGlobals.afterEach.call(this, done);
+  });
+
+  it('test .element().isSelected()', function() {
+    MockServer.addMock({
+      url: '/wd/hub/session/1352110219202/element/0/selected',
+      method: 'GET',
+      response: JSON.stringify({
+        sessionId: '1352110219202',
+        status: 0,
+        value: true
+      })
+    });
+
+    this.client.api.element('#weblogin').isSelected(function (result) {
+      this.assert.equal(result.value, true);
+    });
+  });
+
+  it('async test .element().isSelected()', async function() {
+    MockServer.addMock({
+      url: '/wd/hub/session/1352110219202/element/0/selected',
+      method: 'GET',
+      response: JSON.stringify({
+        sessionId: '1352110219202',
+        status: 0,
+        value: true
+      })
+    });
+
+    const resultPromise = this.client.api.element('#weblogin').isSelected();
+    const result = await resultPromise;
+    assert.equal(result, true);
+  });
+});
+

types/tests/webElement.test-d.ts

@@ -163,6 +163,7 @@ describe('new element() api', function () {
     expectType<Promise<WebElement>>(elem.doubleClick());
     expectType<Promise<WebElement>>(elem.rightClick());
     expectType<Promise<WebElement>>(elem.waitUntil('visible', {timeout: 5000}));
+    expectType<Promise<boolean>>(elem.isSelected());
   });
 
   test('test element assertions', async function () {

types/web-element.d.ts

@@ -187,6 +187,8 @@ export interface ScopedElement extends Element, PromiseLike<WebElement> {
 
   rightClick(): Promise<WebElement>;
 
+  isSelected(): ElementValue<boolean>;
+
   waitUntil(signalOrOptions: WaitUntilActions | WaitUntilOptions, waitOptions?: WaitUntilOptions): Promise<WebElement>;
 }