Correct resource paths.

Signed-off-by: Egon Willighagen <egonw@users.sourceforge.net>
ICrystal extends IAtomContainer... so the second condition was never being checked. A left over gotcha from the removal of IMolecule.

Signed-off-by: Egon Willighagen <egonw@users.sourceforge.net>
Silly test but now resolved - when given a null molecule a null collection is returned.

Signed-off-by: Egon Willighagen <egonw@users.sourceforge.net>
Test was failing because the test order is not guaranteed. This now works but tests depending on other tests are not good tests.

Signed-off-by: Egon Willighagen <egonw@users.sourceforge.net>