Separation of UI5 and hybrid part

Posted by Dominik Feininger on November 12, 2020 at 3:36 PM
Dominik Feininger
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TL;DR: All is better now. Don’t bother if you use an older version of WDI5 and you don’t want to update. Use wdi5 as before for hybrid app testing, but check out wdio5-ui5-service npm module if you test a browser-only app. wdio-ui5-service is also officially listed as a Webdriver.IO-service: https://webdriver.io/docs/docs/wdio-ui5-service.html 🥳

In this blog I am going to describe how we derived two wdio testrunner services from the existing wdi5 framework, resulting in wdio-ui5-service (https://www.npmjs.com/package/wdio-ui5-service) and wdi5 (https://www.npmjs.com/package/wdi5).

Why the effort?

After the success of the previously released version we wanted to have WDI5 available not just for hybrid mobile application testing but rather for all UI5 applications. Hence we noticed the necessity to separate the UI5 part from the hybrid part of the framework.

Goal

Full independence from the wdi5 “hybrid testing package” with full compatibility to wdio for UI5 browser application testing.

What needed to be done?

  • The WDI5 monolith needed to be split up. Now the GIT repository has three folders (wdi5, wdio-ui5-service, test) in root location. As the names suggest, wdi5 contains the hybrid testing tool, wdio-ui5-service the Webdriver.IO-plugin and test the tests for both (b/c wdi5 tests itself with wdi5, yeah 🥳)
  • Implement an interface so wdi5 can reliably dependend on wdio-ui5-service
  • Restructure all code to support the wdio service handling with hooks.

Result

To clarify the confusion: There are 2 (in words: two, dos, deux, zwei) Node.js-modules being built from one git repository:

  1. wdio-ui5-service: the Webdriver.IO-plugin

it is independent from wdi5 and doesn’t have any other module dependencies

  1. wdi5: the hybrid UI5-app test module

wdio-ui5-service is required by wdi5 for runtime, meaning you can drive both the browser- and the hybrid-app with wdi5.

Plus: wdi5 is fully backwards-compatible to previous versions.

i Note that usually we refer to both when we’re using the term wdi5. If one of the two modules is explicitly referred to, we try to use the corresponding term

We’re providing extensive documentation for installation and configuration of both wdio-ui5-service and wdi5 over at https://github.com/js-soft/wdi5/blob/develop/wdio-ui5-service/README.md and https://github.com/js-soft/wdi5/blob/develop/wdi5/README.md.

Note that the usage of both is code-agnostic. Meaning, you’re writing the same syntax and tests no matter whether they run via wdio-ui5-service in the browser-scope or via wdi5 in the app-scope!

There’s a “main” README detailing all the usage and test-options you have code-wise.

i Note that we’re proxying through (almost all) methods of UI5 controls so you can operate the control at test-time just as you do during (UI5-)runtime!

const listItems = browser.asControl(selector).getAggregation('items')
listItems.forEach((listItem) => {
    expect(listItem.getTitle()).not.toBe('')
})

getting-started quickly

wdi5: installation

npm i wdi5 -d

wid5: configuration
// in wdio.conf.js
const wdi5 = require('wdi5')
...
services: [
  [wdi5]
]
...

The wdi5 module provides all capabilities of wdio-ui5-service - no need for a separate install.

wdio-ui5-service: installation

npm i wdio-ui5-service -d

This package is a 100% dependency free library to span the bridge from wdio to UI5. It is required to add all further dependencies by yourself.

wdio-ui5-service: configuration
...
services: [
"ui5" // yes, that's it!
]
...

Usage

All WDI5 functionality is attached to the global browser object Webdriver.IO provides. To stay API-compliant with UIveri5, we decided to introduce .asControl() as the very first entry point to interacting with a UI5 control:

browser.asControl(<selector>)

<selector> is also API-compliant with OPA5 as it refers to an object containing the attributes of the desired UI5 control, such as id or controlType:

const selector = {
  id: "NavigationButton",
  controlType: "sap.m.Button"
}

asControl() returns the located UI5 control and can then be worked on:

const selector = {
  id: "NavigationButton",
  controlType: "sap.m.Button"
}
const button = browser.asControl(selector)
const text = button.getText()

expect(text).toBe("next")
// ...

For convenience, wdi5 supports method chaining. So the above could be rewritten as:

const selector = {
  id: "NavigationButton",
  controlType: "sap.m.Button"
}
expect(browser.asControl(selector).getText()).toBe("next")

As you might have noticed, wdi5 inherits sync coding ability from Webdriver.IO, so no need to go async notation-wise:

// ⚡️ ⛔️ no need for this:
browser.asControl(selector)
  .then((control) => {
    //...
  })
  .catch(...)
//⚡️ ⛔️ ... or this
let button 
try {
  button = await browser.asControl(selector)
} catch(err) { ... }

// just pretend as if asnyc's not there 😂 - we've got ya 😎
browser.asControl(selector).setText("bla").setEnabled(true)

Note that consequently, all non-control actions are also triggered via browser:

browser.screenshot('some-id') // yes, we can do screenshots anywhere :)
browser.goTo({sHash: '#/route'});

Improvements

No manual wdio hook implementation required anymore to setup wdi5

-> starting the tests is even more easy. Literally just three LOC.

Testing of standalone UI5 web-apps using the new wdio-ui5-service module without dependencies

-> separation of concerns having two modules, faster dev cycles

Contributions

… welcome!

Note that we have just started a document for that containing a wishlist for wdi5 features =)

 

 

Topics: wdi5

Dominik Feininger

Written by Dominik Feininger

Implementing unconventional solutions with UI5 to satisfy customer needs. To see the evolution of UI5 in the last 6 years thrills me for the future. Close to SAP technologies, but open to any ideas and input from other areas.

Feel free to leave a comment!

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