Incorrect assertion for Object.create(null)

[vitalets]

This works correctly:

const obj = {};
obj.x = 2;
expect(obj).toEqual({x: 1});

but this does not:

const obj = Object.create(null);
obj.x = 2;
expect(obj).toEqual({x: 1});

Instead of diff it shows error:

- TypeError: obj.hasOwnProperty is not a function

I suppose we should check that obj.hasOwnProperty is function.

jest -v
v11.0.2

[cpojer]

This is a bug in Jasmine and we fixed it in our fork of Jasmine here: d6660c4

It'll go out with Jest 12 probably in a week and a half. You can use the master version of Jest until then if you'd like: https://docs.npmjs.com/files/package.json#git-urls-as-dependencies

[cpojer]

(I also ran into this in #896 and it was annoying).

[github-actions]

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