CaseGen is a small Ruby compiled DSL for generating combinations of variables, optionally restricted by a set of rules.
Download
casegen.1.0.0.zip
Example
This input file:
sets
------------
payment: Credit, Check, Online Bank
amount: 100, 1,000, 10,000
shipping: Ground, Air
ship to country: US, Outside US
bill to country: US, Outside US
rules(sets)
---------------------------
exclude shipping = Ground AND ship to country = Outside US
Our ground shipper will only ship things within the US.
exclude payment = Check AND bill to country == Outside US
Our bank will not accept checks written from banks outside the US.
exclude payment = Online Bank AND amount == 1,000
exclude payment = Online Bank AND amount == 10,000
While the online bank will process amounts > $1,000, we've experienced
occasional problems with their services and have had to write off some
transactions, so we no longer allow this payment option for amounts greater
than $1,000
exclude ship to country = US AND bill to country = Outside US
If we're shipping to the US, billing party cannot be outside US
console(rules)
----------
produces this output:
payment | amount | shipping | ship to country | bill to country
Credit | 100 | Ground | US | US
Credit | 100 | Air | US | US
Credit | 100 | Air | Outside US | US
Credit | 100 | Air | Outside US | Outside US
Credit | 1,000 | Ground | US | US
Credit | 1,000 | Air | US | US
Credit | 1,000 | Air | Outside US | US
Credit | 1,000 | Air | Outside US | Outside US
Credit | 10,000 | Ground | US | US
Credit | 10,000 | Air | US | US
Credit | 10,000 | Air | Outside US | US
Credit | 10,000 | Air | Outside US | Outside US
Check | 100 | Ground | US | US
Check | 100 | Air | US | US
Check | 100 | Air | Outside US | US
Check | 1,000 | Ground | US | US
Check | 1,000 | Air | US | US
Check | 1,000 | Air | Outside US | US
Check | 10,000 | Ground | US | US
Check | 10,000 | Air | US | US
Check | 10,000 | Air | Outside US | US
Online Bank | 100 | Ground | US | US
Online Bank | 100 | Air | US | US
Online Bank | 100 | Air | Outside US | US
Online Bank | 100 | Air | Outside US | Outside US
exclude shipping = Ground AND ship to country = Outside US
Our ground shipper will only ship things within the US.
exclude payment = Check AND bill to country == Outside US
Our bank will not accept checks written from banks outside the US.
exclude payment = Online Bank AND amount == 1,000
exclude payment = Online Bank AND amount == 10,000
While the online bank will process amounts > $1,000, we've experienced
occasional problems with their services and have had to write off some
transactions, so we no longer allow this payment option for amounts greater
than $1,000
exclude ship to country = US AND bill to country = Outside US
If we're shipping to the US, billing party cannot be outside US
FAQ
I don't get any output when I try your sample input file?
Make sure there's a newline at the end of your data. In the above example input file, make sure the last line is "-------\n" not "--------"
How can I use this lib inside another Ruby file, instead of having a separate input file?
sample.rb:
require 'cl/casegen'
CLabs::CaseGen::CaseGen.new(DATA.read)
__END__
sets
----
a: 1, 2
b: 3, 4
rules(sets)
-----------
exclude a = 1
console(rules)
--------------
Are there other tools similar to CaseGen?
I'm no expert here, but I don't like to work on tools when better ones exist, so I'm collecting recommendations/references to other tools here.
BretPettichord mentioned tcases. At first glance, it appears to be a powerful tool.
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