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docs: update custom snapshot matcher example (#10169)
authored by
Hiroshi Ogawa
and committed by
GitHub
(Apr 21, 2026, 12:54 PM +0200)
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docs/guide/snapshot.md
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docs/guide/snapshot.md
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const { toMatchFileSnapshot, toMatchInlineSnapshot, toMatchSnapshot } = Snapshots
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expect.extend({
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toMatchTrimmedSnapshot(received: string, length: number) {
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return toMatchSnapshot.call(this, received.slice(0, length))
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toMatchTrimmedSnapshot(received: string) {
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return toMatchSnapshot.call(this, received.slice(0, 10))
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},
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toMatchTrimmedInlineSnapshot(received: string, inlineSnapshot?: string) {
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return toMatchInlineSnapshot.call(this, received.slice(0, 10), inlineSnapshot)
···
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})
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test('file snapshot', () => {
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// create __snapshots__/demo.test.ts with
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// > exports[`file snapshot 1`] = `"extra long"`
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expect('extra long string oh my gerd').toMatchTrimmedSnapshot(10)
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})
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test('inline snapshot', () => {
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expect('extra long string oh my gerd').toMatchTrimmedInlineSnapshot()
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expect('super long string oh my gerd').toMatchTrimmedInlineSnapshot(`"super long"`)
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})
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test('raw file snapshot', async () => {
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await expect('extra long string oh my gerd').toMatchTrimmedFileSnapshot('./raw-file.txt')
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// create raw-file.txt with:
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// > crazy long
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await expect('crazy long string oh my gerd').toMatchTrimmedFileSnapshot('./raw-file.txt')
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})
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```
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