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Rollup merge of #86297 - GuillaumeGomez:rustdoc-gui-args, r=Mark-Simulacrum

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Allow to pass arguments to rustdoc-gui tool

Very convenient for testing. This is another part of https://github.com/rust-lang/rust/pull/86293

cc ``@jsha``
r? ``@Mark-Simulacrum``
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Yuki Okushi 2021-06-22 07:37:48 +09:00 • committed by GitHub
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src/test/rustdoc-gui/README.md
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@ -8,5 +8,17 @@ test what's being currently displayed in the web page.
You can find more information and its documentation in its [repository][browser-ui-test].
If you need to have more information on the tests run, you can use `--test-args`:
```bash
$ ./x.py test src/test/rustdoc-gui --stage 1 --jobs 8 --test-args --debug
```
There are three options supported:
* `--debug`: allows to see puppeteer commands.
* `--no-headless`: disable headless mode so you can see what's going on.
* `--show-text`: by default, text isn't rendered because of issues with fonts, it enables it back.
[browser-ui-test]: https://github.com/GuillaumeGomez/browser-UI-test/
[puppeteer]: https://pptr.dev/