def test_delete(self, getCon):
"""
Add- and delete several constraints.
"""
# Convenience.
igor = self.igor
# Create the constraints for this test.
c1 = getCon('foo', 1, 2)
c2 = getCon('foo', 2, 3)
c3 = getCon('foo', 3, 4)
# Attempt to delete a non-existing constraint. This must neither return
# an error not delete anything.
assert igor.reset().ok
assert igor.deleteConstraints([c1]) == (True, None, 0)
assert igor.deleteConstraints([c1, c2]) == (True, None, 0)
assert igor.updateLocalCache() == (True, None, 0)
# Add some constraints, delete them, and update the cache.
assert igor.addConstraints([c1, c2, c3]) == (True, None, 3)
assert igor.updateLocalCache() == (True, None, 3)
assert igor.deleteConstraints([c1, c2]) == (True, None, 2)
assert igor.updateLocalCache() == (True, None, 1)
# Add/delete more constraints without every updating the cache. These
# operations must not affect the local cache of constraints in Igor.
assert igor.reset().ok
assert igor.addConstraints([c1, c2, c3]) == (True, None, 3)
assert igor.deleteConstraints([c1, c2]) == (True, None, 2)
assert igor.deleteConstraints([c1, c2]) == (True, None, 0)
assert igor.addConstraints([c1, c2]) == (True, None, 2)
assert igor.deleteConstraints([c1]) == (True, None, 1)
assert igor.deleteConstraints([c1, c2]) == (True, None, 1)
assert igor.deleteConstraints([c1, c2]) == (True, None, 0)
assert igor.updateLocalCache() == (True, None, 1)
assert igor.getConstraints(None).data == (c3, )
def test_uniquePairs(self, getCon):
"""
Add- and delete constraints and verify that Igor maintins a consistent
list of unique body pairs.
"""
# Convenience.
igor = self.igor
# Create the constraints for this test.
c1 = getCon('foo', 1, 2)
c2 = getCon('foo', 2, 3)
c3 = getCon('foo', 3, 4)
# There must not be any pairs after a reset.
assert igor.reset() == (True, None, None)
assert igor.uniquePairs() == (True, None, tuple())
# Adding a constraint must result in one unique pair of IDs *after*
# updating the Igor cache.
assert igor.addConstraints([c1]) == (True, None, 1)
assert igor.uniquePairs() == (True, None, tuple())
assert igor.updateLocalCache() == (True, None, 1)
assert igor.uniquePairs().data == ((c1.rb_a, c1.rb_b), )
# Add three more constraints, only two of which are actually new.
assert igor.addConstraints([c1, c2, c3]) == (True, None, 2)
assert igor.updateLocalCache() == (True, None, 3)
# Verify that the set of unique pairs now covers those involved in the
# constraints.
ref = [(_.rb_a, _.rb_b) for _ in (c1, c2, c3)]
assert set(igor.uniquePairs().data) == set(tuple(ref))
# Delete two constraints.
assert igor.deleteConstraints([c1, c3]) == (True, None, 2)
assert set(igor.uniquePairs().data) == set(tuple(ref))
assert igor.updateLocalCache() == (True, None, 1)
assert igor.uniquePairs().data == ((c2.rb_a, c2.rb_b), )