= Test cases for LibLarch =

For purpose of rewriting parts of [[gtg/liblarch|LibLarch]], there is a small demo at [[https://code.launchpad.net/~izidor/gtg/liblarch-demo|lp:~izidor/gtg/liblarch-demo]]. It contains liblarch and liblarch-gtk code, unittests and a GUI application for experimenting. A screenshot of the demo application:

The following list of behavior defined by use cases is required:

== Test case #1 ==

* run unit tests

'''Expected result:''' Every unit test passes.

== Test case #2 ==

* Load situation form file ''example-trees/delete-randomly''

* Select all tasks (''<CTRL> + A'')

* Press ''Delete randomly''

'''Expected result:''' The operation is completed in a reasonable time and without errors in the console (compare by deleting by ''Delete backwards'')

'''Actual result:''' Many tracebacks in console, deleting takes a long time.

== Test case #3 ==

* Load situation form file ''example-trees/test_suite''

* Select any ''Task X'' and delete it

'''Expected result''': No warning and the resulting tree like this one:

{{{

==================== Tree ====================

root

==============================================

}}}

== Test case #4 ==

* Load situation form file ''example-trees/test_suite''

* Select any parent of ''Task X'' and delete it

'''Expected result:''' No warnings and preserve consistency of the tree

== Test case #5 ==

* Load situation form file ''example-trees/test_suite''

* Press the button ''Delete DFXBCAE''

'''Expected result:''' No warnings, the result tree is empty.

'''Actual result:'''

{{{

/home/iyo/projekte/liblarch-demo/GTG/gtk/liblarch_gtk/treemodel.py:403: GtkWarning: _gtk_rbtree_reorder: assertion 'tree->root->count == length' failed

f(*args)

}}}

== Test case #6 ==

* Load situation form file ''example-trees/test_suite''

* Select any task (X or not X) and press ''Tree high 3 backwards''

'''Expected result:''' added to tree and preserved consistency of the tree

'''Actual result:''' many warnings, e.g

{{{

** (main.py:29964): CRITICAL **: pygtk_generic_tree_model_get_value: assertion 'VALID_ITER(iter, tree_model)' failed

** (main.py:29964): CRITICAL **: pygtk_generic_tree_model_iter_children: assertion 'parent == NULL || parent->stamp == PYGTK_GENERIC_TREE_MODEL(tree_model)->stamp' failed

}}}

== Test case #6 ==

* Load situation form file ''example-trees/test_suite''

* Select any task (X or not X) and press ''Tree high 3 backwards''

'''Expected result:''' added to tree and preserved consistency of the tree

'''Actual result:''' many warnings, e.g

{{{

** (main.py:29964): CRITICAL **: pygtk_generic_tree_model_get_value: assertion 'VALID_ITER(iter, tree_model)' failed

** (main.py:29964): CRITICAL **: pygtk_generic_tree_model_iter_children: assertion 'parent == NULL || parent->stamp == PYGTK_GENERIC_TREE_MODEL(tree_model)->stamp' failed

}}}

== Test case #7 ==

* Load situation form file ''example-trees/cycle''

'''Expected result:''' A traceback:

{{{

Traceback (most recent call last):

File "./main.py", line 504, in load_from_file

parent_node.add_child(child)

File "/home/iyo/projekte/liblarch-demo/GTG/tools/liblarch/tree.py", line 600, in add_child

toreturn = self.new_relationship(self.get_id(),node_id)

File "/home/iyo/projekte/liblarch-demo/GTG/tools/liblarch/tree.py", line 484, in new_relationship

return self.tree.new_relationship(par,chi)

File "/home/iyo/projekte/liblarch-demo/GTG/tools/liblarch/tree.py", line 233, in new_relationship

"between %s and %s" %(parent_id,child_id))

Exception: Cannot build circular relationshipbetween Child and Parent

}}}

* Press button ''Print Tree'' (to see how liblarch see the tree)

'''Expected result:''' print the same tree which is shown in liblarch_widget

'''Actual result:''' many parent, child nodes and ended by a traceback ''RuntimeError: maximum recursion depth exceeded in cmp''

{{{

... shorten ...

File "/home/iyo/projekte/liblarch-demo/GTG/tools/liblarch/tree.py", line 427, in _print_from_node