"too many files open" while running tests

While trying to develop a test for Component Command execution I'm still running into too many files open error. And I found that actually the problem happens a long before the actual test is executed, see the log output of npm test:

Loading development extension at /home/jeremy/projects/vscode-openshift-tools/source/vscode-openshift-tools
[File Watcher (node.js)] Failed to watch /home/jeremy/projects/vscode-openshift-tools/source/vscode-openshift-tools/.vscode-test/user-data/User for changes using fs.watch() (Error: EMFILE: too many open files, watch '/home/jeremy/projects/vscode-openshift-tools/source/vscode-openshift-tools/.vscode-test/user-data/User')
[File Watcher (node.js)] Failed to watch /home/jeremy/projects/vscode-openshift-tools/source/vscode-openshift-tools/.vscode-test/user-data/User/settings.json for changes using fs.watch() (Error: EMFILE: too many open files, watch '/home/jeremy/projects/vscode-openshift-tools/source/vscode-openshift-tools/.vscode-test/user-data/User/settings.json')
[File Watcher (node.js)] Failed to watch /home/jeremy/projects/vscode-openshift-tools/source/vscode-openshift-tools/test/fixtures/components/empty.code-workspace for changes using fs.watch() (Error: EMFILE: too many open files, watch '/home/jeremy/projects/vscode-openshift-tools/source/vscode-openshift-tools/test/fixtures/components/empty.code-workspace')
[File Watcher (node.js)] Failed to watch /home/jeremy/projects/vscode-openshift-tools/source/vscode-openshift-tools/.vscode-test/vscode-linux-x64-1.81.1/resources/app/extensions/theme-defaults/fileicons/vs_minimal-icon-theme.json for changes using fs.watch() (Error: EMFILE: too many open files, watch '/home/jeremy/projects/vscode-openshift-tools/source/vscode-openshift-tools/.vscode-test/vscode-linux-x64-1.81.1/resources/app/extensions/theme-defaults/fileicons/vs_minimal-icon-theme.json')
[File Watcher (node.js)] Failed to watch /home/jeremy/projects/vscode-openshift-tools/source/vscode-openshift-tools/.vscode-test/vscode-linux-x64-1.81.1/resources/app/extensions/theme-abyss/themes/abyss-color-theme.json for changes using fs.watch() (Error: EMFILE: too many open files, watch '/home/jeremy/projects/vscode-openshift-tools/source/vscode-openshift-tools/.vscode-test/vscode-linux-x64-1.81.1/resources/app/extensions/theme-abyss/themes/abyss-color-theme.json')
[vscode.php]: One or more snippets from the extension 'php' very likely confuse snippet-variables and snippet-placeholders (see https://code.visualstudio.com/docs/editor/userdefinedsnippets#_snippet-syntax for more details)
[File Watcher (node.js)] Failed to watch /home/jeremy/projects/vscode-openshift-tools/source/vscode-openshift-tools/.vscode-test/user-data/User/snippets for changes using fs.watch() (Error: EMFILE: too many open files, watch '/home/jeremy/projects/vscode-openshift-tools/source/vscode-openshift-tools/.vscode-test/user-data/User/snippets')
(node:636849) Warning: Accessing non-existent property 'VERSION' of module exports inside circular dependency
(Use `exe --trace-warnings ...` to show where the warning was created)
[636539:0824/013338.891900:ERROR:gl_surface_presentation_helper.cc(260)] GetVSyncParametersIfAvailable() failed for 1 times!
  odo commands integration component
[636539:0824/013349.566429:ERROR:gl_surface_presentation_helper.cc(260)] GetVSyncParametersIfAvailable() failed for 2 times!
      1) runCompobentCommand()
  Suite duration: 14.898 s, Tests: 1
  0 passing (20s)
  1 failing
  1) odo commands integration
       component
         runCompobentCommand():
     AssertionError [ERR_ASSERTION]: Start Dev failed:  ✗  too many open files

      at Context.<anonymous> (test/integration-partial/command.test.ts:210:25)
      at Generator.next (<anonymous>)
      at fulfilled (out/test/integration-partial/command.test.js:9:58)

No coverage information was collected, exit without writing coverage information
Error: 1 tests failed
    at Object.<anonymous> (/home/jeremy/projects/vscode-openshift-tools/source/vscode-openshift-tools/test/integration-partial/index.ts:65:15)
    at Generator.next (<anonymous>)
    at fulfilled (/home/jeremy/projects/vscode-openshift-tools/source/vscode-openshift-tools/out/test/integration-partial/index.js:5:58)
[main 2023-08-23T23:33:57.231Z] Extension host with pid 636849 exited with code: 0, signal: unknown.
Exit code:   1
Failed to run tests

Originally posted by @vrubezhny in https://github.com/redhat-developer/vscode-openshift-tools/issues/2811#issuecomment-1691597323