Added support for launching the local web server for component testing from the android emulator (#3460)

Author: prudhvi22

lib/core/client.js

@@ -443,7 +443,13 @@ class NightwatchClient extends EventEmitter {
   }
 
   setLaunchUrl() {
-    const value = this.settings.baseUrl || this.settings.launchUrl || this.settings.launch_url || null;
+    let value = this.settings.baseUrl || this.settings.launchUrl || this.settings.launch_url || null;
+
+    // For e2e and component testing on android emulator
+    if (!this.settings.desiredCapabilities.real_mobile && this.settings.desiredCapabilities.avd) {         
+      value = value.replace('localhost', '10.0.2.2').replace('127.0.0.1', '10.0.2.2');
+    }
+
     this
       .setApiProperty('baseUrl', value)
       .setApiProperty('launchUrl', value)

test/src/index/testMobileComponent.js

@@ -0,0 +1,36 @@
+const assert = require('assert');
+const common = require('../../common.js');
+const NightwatchClient = common.require('index.js');
+
+
+describe('Mobile Component Testing in Android Emulator', function () {
+  it('test baseUrl - localhost',  function(){
+    const client = NightwatchClient.client({
+      baseUrl: 'http://localhost:3000',
+      webdriver: {
+        start_process: true
+      },
+      desiredCapabilities: {
+        avd: 'nightwatch-android-11',
+        real_mobile: false
+      }
+    });
+
+    assert.strictEqual(client.api.baseUrl, 'http://10.0.2.2:3000');
+  });
+
+  it('test baseUrl - 127.0.0.1',  function(){
+    const client = NightwatchClient.client({
+      baseUrl: 'http://127.0.0.1:3000',
+      webdriver: {
+        start_process: true
+      },
+      desiredCapabilities: {
+        avd: 'nightwatch-android-11',
+        real_mobile: false
+      }
+    });
+
+    assert.strictEqual(client.api.baseUrl, 'http://10.0.2.2:3000');
+  });
+});