For question about web-component-tester, a tool for testing Polymer-based web components.
web-component-tester is a browser-based testing environment for polymer-based web components, configured out of the box with:
For more details, see
Questions tagged [web-component-tester]
111 questions
16
votes
1 answer
SyntaxError: Unexpected token ILLEGAL on comment with Web Component Tester
I use Codeship to test my project based on the Polymer starter kit v1.1.
When I run npm test inside the test pipeline I see the following error:
> @ test /home/rof/src/github.com/TFarla/night-live
> gulp…
Farla
- 206
- 2
- 10
10
votes
2 answers
Polymer web-component-tester / selenium is stalling
We are trying to run the web-component-tester however it keeps stalling on the Selenium step.
When I run wct -l chrome --verbose
I get the following
hook: prepare
hook: prepare:selenium
hook done: prepare:selenium
Starting Selenium server for local…
directjames
- 103
- 6
9
votes
1 answer
How do I run a specific test using the Polymer web-component-tester?
While developing a Polymer web component, more specifically while adding additional tests, it can become quite cumbersome to run all of the component's test each time I make an adjustment to the tests.
The simplest answer would be to comment out the…
juriejan
- 440
- 3
- 12
9
votes
1 answer
Specify browser location for wct-local test
The Polymer Starter Kit contains web-component-tester for unit testing your custom elements.
In wct.conf.json you can specify the browsers to run the tests in.
{
"suites": ["app/test"],
"plugins": {
"local": {
"browsers": ["firefox"]
…
Stevy
- 743
- 5
- 15
9
votes
3 answers
Configure Polymer web-component-tester to use a Selenium Grid server
I need to configure the Polymer web-component-tester to use a Selenium Grid running at http://jenkins.myapp.corp.web:4444/wd/hub so I can run my tests on Jenkins. What is the Grunt config for this? I guessing something like this:
'wct-test': {
…
Carl von Buelow
- 1,154
- 7
- 11
8
votes
2 answers
puppeteer: clicking button in shadowroot
I'm having difficulties with actions on elements in shadowroot in my test context. Lets say I have a web component
R. Gulbrandsen
- 3,648
- 1
- 22
- 35
8
votes
1 answer
Web Component Tester: Apply afterEach() globally
I have hundreds of Polymer test suites. At the end of each test, I'd like to do some custom quality checks. Is there a way to do this globally for all my test suites?
x74x61
- 423
- 6
- 18
7
votes
1 answer
JUnit formatted test output
Jenkins doesn't notice my test cases being ran in Polymer and I am not so sure how to generate the correct JUnit file. With the web-component-tester how do I generate JUnit formatted test output?
Nick Rucci
- 1,058
- 11
- 20
5
votes
0 answers
Uncaught Error: WCT requires Mocha error in web-components-tester
I want to setup the web-component-tester to test my web components. I installed it via npm (devDependency) and created the following script:
package.json:
"scripts": {
"wcttest": "./node_modules/.bin/wct --npm…
Cenasa
- 531
- 9
- 27
5
votes
3 answers
Testing navigator.browserLanguage or navigator.language with Sinon.js
How to use sandbox.stub of Testing framework Sinon to overwrite e.g. navigator.language or navigator.userAgent for testing?
When I try to use the following:
suite('agent', function () {
var sandbox;
setup(function () {
// create sandbox…
DoK
- 851
- 3
- 15
- 31
4
votes
2 answers
Web Component / HtmlElement : unit testing
I'm trying to test a web component.
Here is my project structure :
├── package.json
├── src
│ ├── app.js
│ └── index.html
└── test
└── hello-world-test.html
Here is my working code :
class HelloWorld extends HTMLElement {
…
Loo
- 43
- 4
4
votes
1 answer
Running polymer-3.x test in headless browser
I want to run tests without the browser pop-up.Installed wct-headless and configured wct.config.json as shown
{
"plugins": {
"local": {
"disabled": true
},
"headless": {
"browsers": [
"chrome",
"firefox"
…
Raj
- 1,100
- 3
- 20
- 33
4
votes
1 answer
unit testing native custom elements v1 web component with shadow dom
I have created a native custom element as web component with pure JS/HTML/CSS following the guide here.
Now I am wondering how can I write unit tests for such a component. There is an excellent library web component tester but I believe it is only…
Waku-2
- 1,136
- 2
- 13
- 26
3
votes
0 answers
WCT script failing outside test with : 'Error thrown outside of test function'
I have a custom polymer element which creates another polymer element in its properties. The code is as such :
Polymer({
is: 'pg-create-ad-new',
properties:{
creative: {
type: "String"
},
storyId: {
type: "String",
value: ()=>{
…
Kumar Pratyush
- 71
- 5
3
votes
0 answers
Could not find WCT plugin named "local" when running Polymer test
After cloning Polymer Starter Kit, I installed WCT with:
npm install -g web-component-tester
Now, I am getting this error:
Could not find WCT plugin named "local"
How do I fix this?
subhash
- 167
- 1
- 4
- 15