Class GeneratorListGroupMaster

source code

Provides a mechanism to create in effect a group of GeneratorList2's that will progress and increment together drivin by the master of the group. This Generator is the Group Master generator and controls the slaves of the group.

This generator comes in handy when you have two bits of data that are logically linked but in separate places. An example would be a length of data being generated. Both values are parameters and generated separaetly but a test calls for performing different length tests against different data being generated (zero length data and 100 bytes of data say) which would be a subset of the noramally generated data.

Example:

>>> groupNormalBlock = Group()
>>> groupForeachBlock = Group()
>>> groupDoLength = Group()
>>> groupForeachBlockDoLength = GroupForeachDo(groupForeachBlock, groupDoLength)
>>> 
>>> genBlock = GeneratorListGroupMaster(None, [
...     groupNormalBlock,
...     groupForeachBlockDoLength
...     ], [
...     
...     # Our normal tests
...     GeneratorList(groupNormalBlock, [
...             Static('A'),
...             Static('BB'),
...             ]),
...     
...     # For each of these do all the length tests
...     GeneratorList(groupForeachBlock, [
...             Static(''),
...             Static('PEACH' * 10),
...             ]),
...     ])
>>>
>>> genLength = GeneratorListGroupSlave([
...             None,
...     None,
...     ], [
...     # generated value for the normal block tests
...     BlockSize(genBlock),
...
...     # actual length tests
...     GeneratorList(groupDoLength, [
...             NumberVariance(None, BlockSize(genBlock), 20),
...             BadNumbers(),
...             ])
...     ], genBlock)
>>>
>>> print genBlock.getValue()
A
>>> print genLength.getValue()
1
>>> genBlock.next()
>>> print genBlock.getValue()
BB
>>> print genLength.getValue()
2
>>> genBlock.next()
>>> print genBlock.getValue()

>>> print genLength.getValue()
-20