Issue1397

Please find attached a patch that fixes the issues relating to this bug
report.


Here is a description of the issues and fixes:


PyList.setSlice():
Invokes one of setslicePyList(), setsliceIterator(), or setsliceList()
to do the actual work, depending on the type of the source list.
setSliceList() was never invoked, due to:

} else if (vlaue != null && !(value instanceof List)) {
	setsliceIterator(start, stop, step, value.asIterable().iterator());
} else {
	// convert to list and invoke setsliceList()
}

The first test will fail on wrapped java.util.List objects, since they
will be of type PyObjectDerived, which does not implement java.util.List.


This if-else block has been modified so that setsliceList() will be used.



PyList.setsliceList():
This method does not work where the source list does not have the same
length as the destination slice; it fails with an index out of bounds
error. The implementation was replaced by copying setslicePyList(), and
modifying it slightly.



PyJavaType.ListIndexDelegate.setSlice():
This method does not work where the source list does not have the same
length as the destination slice; it fails with an index out of bounds
error. It used effectively the same code as PyList.setsliceList() did.
The implementation has been replaced by duplicating the
setslicePyList/setsliceIterator/setsliceList functionality of PyList.



Lib/test/test_java_list_delegate.py:
- Sizes of lists and ranges tested has been reduced. This should speed
this test up without comprimising its correctness.
- All slice tests now test None as a parameter when constructing the
slices, they didn't before; this resulted in some gaps in the testing.
- method test_set_slice_from_input_types() added to test the operation
of the modifications to the PyList slice setting methods



This patch has been tested with the regression test suite.

The PyList.list member has recently been made private.
As a result, the PyJavaType.setslicePyList method can no longer access
it. This is rectified by replacing 'value.list' in this method with
'value.getList()'.