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doc: internal/test/binding for testing

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PR-URL: https://github.com/nodejs/node/pull/38026
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
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Bradley Farias
2021-04-02 14:26:01 -05:00
committed by Rich Trott
parent ab42ef3930
commit f52c92134c
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doc/guides/writing-tests.md
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@@ -286,6 +286,15 @@ const assert = require('assert');
const freelist = require('internal/freelist');
```
In specific scenarios it may be useful to get a hold of `primordials` or
`internalBinding()`. You can do so using
```console
node --expose-internals -r internal/test/binding lib/fs.js
```
This only works if you preload `internal/test/binding` by command line flag.
### Assertions
When writing assertions, prefer the strict versions: