@acryps/feature
Advanced tools
What is a feature and what can I do with it?
Usually, your application consists of several different functionalities. This could be, for example, that a user can configure a product on a web configurator or that a user is able to search for a specific product using a search prompt, and so on. Now, using Features, you can define those functionalities in code. You can define them step-by-step for your web applications.
Using those defined features, you can automatically generate guides, screenshots, and videos!. Thus, no more tedious work by hand!
Why would I want to do that?
Imagine you have finished the first version of your web application and created complete video guides for its functionalities. After a couple of weeks, the web application is redesigned. Now the videos are outdated, and you have to tediously recreate the video guides again by hand. Not with Features! With Features, you can simply re-execute the features, and the video guides are regenerated for the updated web application within seconds.
Additionally, features can be used to find bugs and unwanted UI changes across project versions. By comparing the screenshots of features across different versions, you will see unwanted changes within seconds!
To use Features, you need to install ffmpeg.
The following shows an example where a product is configured.
Features uses method chaining in order to define the instructions of the feature. Each instruction can simply be chained after the previous one.
// define your project
const project = new Project('assembly', 'https://assembly.acryps.com');
// define your own feature
const feature = new Feature('basic usage', 'demonstrate basic usage of feature')
// navigate to website
.go(`https://assembly.acryps.com/`)
// find html element 'action' which has content 'Action' and click it
.element('action', 'Create').click()
// wait while html element 'indicator' is present
.waitWhile('indicator')
// find html element 'Body Type' and click it
.element('name', 'Body Type').click()
.element('name', 'Wafer').click()
.element('action', 'Save As...').click()
// find html input element 'save-assembly input' and write 'My Configuration' into input field
.element('save-assembly input').write('My Configuration')
.element('action', 'Add to my Assemblies').click();
// execute the feature for a project
const result = await feature.execute(project)
.guide() // generate a guide
.screenshot() // generate screenshots for each step
.video('./basic-usage/video.webm') // generate video
.run();
// save result
await result.save('./media/basic-usage');
In order to interact with a web application, we need to be able to tell Features which elements we want to interact with.
To do this, we have element to handle single elements and elements to handle multiple elements.
Both of those use 'locators' to search the element on the webpage.
These locators describe the HTML tags of the elements.
For example, if we have the following webpage:
<html>
<body>
<title>
<name>Title</name>
</title>
<panels>
<panel>
<name>panel 1</name>
</panel>
<panel>
<name>panel 2</name>
</panel>
</panels>
</body>
</html>
We can select the title like this:
feature.element('title name')
// and then interact with it
.click();
We can interact with multiple elements, such as the panels:
// now we selected all the 'panel' elements
feature.elements('panels panel');
To interact with a single panel, we have to filter them. This can be done in various ways:
// select the first panel
feature.elements('panels panel').first()
// then click on the selected element
.click();
// get the element at index 1 (the second element)
feature.elements('panels panel').at(1)
// then hover on it
.hover();
// filter according to where conditions
feature.elements('panels panel')
// select the panel which has an element 'name' with content 'panel 1'
.where('name', 'panel 1')
.first()
.click();
This is the basic usage of element and elements. However, the chaining of elements is unlimited, so you can do much more!
Please refer to the class documentation for detailed descriptions of the functions available for Feature, SingleElement, MultipleElement and Select.
After having defined your own feature, it's time to execute it!
A feature can be executed using execute, a project, and a viewport.
const project = new Project('example-project', 'https://example.com');
const viewport = { width: 1280, height: 720, deviceScaleFactor: 1 };
const execution = feature.execute(project, viewport);
This returns an instance of Execution. Using an execution, we can specify how we want to execute the feature.
By adding guide, screenshot, or video, we can specify if we want to generate a guide, screenshots, or video.
We can additionally tell the execution to not run in headless mode, meaning you will be able to see the browser executing the feature.
This can be done by simply adding a boolean value to the run function: .run(false).
// generate guide, screenshot, and video
const result = await execution
.guide()
.screenshot()
.video('./media/video.webm')
.run(); // running headless
Finally, you can save your result using the ExecutionResult.
await result.save('./media/example');
For more detailed documentation and extended usage, see here.
FAQs
**What is a feature and what can I do with it?**
The npm package @acryps/feature receives a total of 4 weekly downloads. As such, @acryps/feature popularity was classified as not popular.
We found that @acryps/feature demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 3 open source maintainers collaborating on the project.
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