Test builtin notebook output renderer

[rebornix]

Refs: #142429

• anyOS @kimadeline
• anyOS @karrtikr

Complexity: 4

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We moved following mimetypes into the builtin notebook renderer extension

"image/gif",
"image/png",
"image/jpeg",
"image/git",
"image/svg+xml",
"text/html",
"application/javascript",
"application/vnd.code.notebook.error",
"application/vnd.code.notebook.stdout",
"application/x.notebook.stdout",
"application/x.notebook.stream",
"application/vnd.code.notebook.stderr",
"application/x.notebook.stderr",
"text/plain"

To test the new renderer, yon can

• Open microsoft/vscode-jupyter/src/test/datascience/notebook/withOutput.ipynb in VS Code
• Or if you can want to play around with Jupyter a bit
  • Install Python extension
  • Install Jupyter
  • File -> New File... -> Jupyter Notebook to create new file
  • Start to write some python code, you can follow this book https://github.com/donnemartin/data-science-ipython-notebooks

You don't necessarily have to test all mimetypes but following features are good ones to validate

• Find in Outputs work (e.g., find in output works for text output print(1)). Some guidance on how to test find in output Test notebook hybrid find widget #141346
• Error output are colorized properly

  with Error

• Large output won't block the UI

   for i in range(0, 10000):
     print(i)

[kimadeline]

• Test mimetypes: gif, png
• Find in Outputs work: tested both markdown source and rendered markdown (I also hit "Rendered Markdown" disabled "Markdown Source" #141375)
• Error output are colorized properly
• Large output won't block the UI