Function havingProps

compares the passed in actual has each of the expected property names and optionally also if the specified property name is of the expected type

ex:

const actual = {foo: 42, bar: 'foo', baz: false};

havingProps(['foo', ['bar', 'string']])
.setActual(actual)
.compare(); // returns `true`

havingProps([['foo': 'string'], 'bar', 'baz'])
.setActual(actual)
.compare(); // returns `false` because 'foo' is type `number`

havingProps(['foobar'])
.setActual(actual)
.compare(); // returns `false` because no property named `foobar`

await aftTest('example havingProps', async () => {
    await t.verify(actual, havingProps(['foo', ['bar', 'string']])); // succeeds
});
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