[Genesis929]

Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:

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Fixes #2261🦕

[tswast]

I don't think this is available on the Query response object, is it?

[tswast]

Please update the link to the correct object: http://cloud.google.com/bigquery/docs/reference/rest/v2/jobs/query#body.QueryResponse.FIELDS.creation_time

[Genesis929]

Thanks! Didn't notice the difference. Updated.

[tswast]

To make the assertions easier, use datetime objects and a helper function like I added in #2250

def _to_millis(dt: datetime.datetime) -> str:
    return str(
        int(
            (dt - datetime.datetime(1970, 1, 1, 0, 0, 0, tzinfo=datetime.timezone.utc))
            / datetime.timedelta(milliseconds=1)
        )
    )

[tswast]

I would recommend avoiding the cast to float of using timestamp(), this can introduce rounding errors.

[tswast]

Thanks!