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Apr 27, 2022
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doc: clarify guide on testing internal errors #42813

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doc: clarify guide on testing internal errors
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12 changes: 12 additions & 0 deletions doc/contributing/writing-tests.md
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Expand Up @@ -312,6 +312,18 @@ assert.throws(
);
```

In the case of internal errors, prefer checking only the `code` property:

```js
assert.throws(
() => {
throw new ERR_FS_FILE_TOO_LARGE(`${sizeKiB} Kb`);
},
{ code: 'ERR_FS_FILE_TOO_LARGE' }
// Do not include message: /^File size ([0-9]+ Kb) is greater than 2 GiB$/
);
```

### Console output

Output written by tests to stdout or stderr, such as with `console.log()` or
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