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toMatchObject throws TypeError when a source property is null
See original GitHub issuetest.only("foo", () => {
expect({ foo: null }).toMatchObject({ foo: { bar: "baz" } });
});
This code gives a TypeError as opposed to a nice assertion error.
Both myself and my colleague have had this issue this week and both of us took about an hour to realise it was a problem with Jest and not our code.
Issue Analytics
- State:
- Created 5 years ago
- Comments:6
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This is pretty bad…
Repro: https://repl.it/repls/PersonalVisibleCustomer Error message:
Should be easy enough to fix though, mind sending a PR?
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