Updates:
Summary: Library for date/time conversion and calculation
Owner: pekka.klarck
Cc: [email protected]
Labels: -Target-2.9 Target-2.8.5
Comment #24 on issue 415 by pekka.klarck: Library for date/time conversion
and calculation
http://code.google.com/p/robotframework/issues/detail?id=415
We try to get this library implemented for RF 2.8.5. Janne and I had a
design discussion today and agreed to implement following keywords. Except
keyword names and other details are still subject to change.
1) 'Convert Date'. Converts dates from and to different formats. We plan to
support at least:
- Timestamps in format '2014-04-24 21:45:12.123'. On input this format
accepts any non-numbers as separators (this allows 'T' between data and
time as mandated by ISO 8601) and pads missing numbers from right with 0.
For example just '20140424' would be valid.
- Timestamps in custom format parsed by datetime.strptime
<https://docs.python.org/2.7/library/datetime.html#datetime.datetime.strptime>.
- Python datetime and date objects
<https://docs.python.org/2.7/library/datetime.html>.
- Seconds since epoch.
In most cases the input format can be guessed based on the object type, but
the keyword will also allow explicitly stating the format. Output format
can also be specified, but the default will be timestamp in
format '2014-04-24 21:45:12.123'.
2) 'Convert Time'. Converts times in different formats:
- Time strings in Robot's format (e.g. '1 day 23 hours').
- Seconds as integer or float.
- timedelta objects
<https://docs.python.org/2.7/library/datetime.html#datetime.timedelta>,
Figuring out input type and specifying return type will work like
with 'Convert Data'. The default return type will be float.
3) 'Subtract Dates'. Allows calculating difference between two dates. Dates
can be given in formats supported by 'Convert Date' and result can be
returned using formats supported by 'Convert Time'.
4) 'Add to Date'. Allows adding a time duration to a date. Date can be
given in same formats as supported by 'Convert Date' and time in formats
supported by 'Convert Time'. Return value will be date.
5) 'Subtract from Date'. Allows subtracting a time duration from a date.
Inputs and outputs identicla to 'Add to Date'.
6) We probably will also implement 'Get Current Date'. It would work
similarly as current 'BuiltIn.Get Time', but would support same date
formats as 'Convert Date'. Alternatively we may enhance 'Get Time' (likely
hard due to backwards-compatibility requirements) or just decide this isn't
needed.
7) We may also implement 'Should Be Date' and 'Should Be Time' for
verifying dates/times. They would probably be very handy in testing other
keywords and there could also be some real life use cases.
8) We probably won't implement comparison keywords. The reason is that
keywords like 'Should Be True' and 'Run Keyword If' already handle
expressions like `${date1} > ${date2}` if dates are in uniform format. We
also discussed about a possibility to add separate generic comparison
keywords later.
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