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16 lines
525 B
Markdown
16 lines
525 B
Markdown
Snapshot tests are written using the `.toMatchSnapshot()` matcher:
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```ts
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import { test, expect } from "bun:test";
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test("snap", () => {
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expect("foo").toMatchSnapshot();
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});
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```
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The first time this test is run, the argument to `expect` will be serialized and written to a special snapshot file in a `__snapshots__` directory alongside the test file. On future runs, the argument is compared against the snapshot on disk. Snapshots can be re-generated with the following command:
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```bash
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$ bun test --update-snapshots
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```
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