Introduce vscode-extension-tester to support UI testing

[rcjsuen]

Problem Description

We do not have any tests in this repository. Due to our dependency of a Go binary that is sourced from another repository, it is important that we verify that the builds we generate are able to start the language server and provide the expected features to the client.

Proposed Solution

We will use the vscode-extension-tester library to drive some UI tests. This will help us perform some simplified validation on our builds.

Proof of Work

Installing extensions...
Extension 'docker-0.3.0.vsix' was successfully installed.


Detected user defined code settings
Writing code settings to /var/folders/ln/c6gntgwx7m5gwlhx2dkc73w40000gp/T/test-resources/settings/User/settings.json
Launching browser...
Browser ready in 6157 ms
Launching tests...
  Docker Bake
    Problems
      ✔ Bake file has an error about not being able to find an ARG
      ✔ Bake file has no warnings

  Dockerfile
    Problems
      ✔ Dockerfile has no errors
      ✔ Dockerfile has a JSONArgsRecommended warning

Shutting down the browser

  4 passing (19s)

[rcjsuen]

@stanislavHamara Could you checkout this branch and try running npm install and npm test? Want to make sure I didn't miss anything and that another developer is able to execute the tests locally.

[stanislavHamara]

@stanislavHamara Could you checkout this branch and try running npm install and npm test? Want to make sure I didn't miss anything and that another developer is able to execute the tests locally.

I get this pop up when I start tests

Tests output:

0 passing (46s)
  2 failing

  1) Docker Bake
       Problems
         "before all" hook for "Bake file has an error about not being able to find an ARG":
     TimeoutError: Wait timed out after 15129ms
      at /Users/stanislavhamara/source/vscode-extension/node_modules/selenium-webdriver/lib/webdriver.js:929:22
      at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

  2) Dockerfile
       Problems
         "before all" hook for "Dockerfile has no errors":
     TimeoutError: Wait timed out after 15079ms
      at /Users/stanislavhamara/source/vscode-extension/node_modules/selenium-webdriver/lib/webdriver.js:929:22
      at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

[rcjsuen]

I get this pop up when I start tests

@stanislavHamara Aha, I see. :)

1. When you run npm test, right before the tests start running it generate a VSIX file. Could you provide the output after INFO Files included in the VSIX: so I can see what is in the VSIX file that it has built?
2. Do you have a bin folder and if yes, what is inside the bin folder?

[stanislavHamara]

I get this pop up when I start tests

@stanislavHamara Aha, I see. :)

1. When you run npm test, right before the tests start running it generate a VSIX file. Could you provide the output after INFO Files included in the VSIX: so I can see what is in the VSIX file that it has built?
2. Do you have a bin folder and if yes, what is inside the bin folder?

 INFO  Files included in the VSIX:
docker-0.3.0.vsix
├─ [Content_Types].xml 
├─ extension.vsixmanifest 
└─ extension/
   ├─ LICENSE.txt [10.51 KB]
   ├─ NOTICE.html [17.36 KB]
   ├─ SECURITY.md [1.82 KB]
   ├─ TELEMETRY.md [1.34 KB]
   ├─ changelog.md [1.97 KB]
   ├─ package.json [4.69 KB]
   ├─ readme.md [4.92 KB]
   ├─ dist/
   │  ├─ 1.extension.js [21.23 KB]
   │  ├─ 770.extension.js [20.65 KB]
   │  └─ extension.js [350.64 KB]
   ├─ resources/
   │  └─ docker-logo-vertical-blue.png [244.23 KB]
   └─ syntaxes/
      └─ hcl.tmGrammar.json [18.77 KB]

No bin folder

[rcjsuen]

@stanislavHamara Thanks for helping test this!

Could you fetch the latest add-smoke-testing branch again and then run npm install followed by npm test?

[stanislavHamara]

LGTM 🔥