예제 #1
0
def describe_entity(entity: ChebiEntity) -> None:
    """
    Test function to describe a ChEBI entity.

    Args:
        entity:
            a :class:`ChebiEntity`
    """
    name = entity.get_name()

    out_lines = []  # type: List[str]
    for other in entity.get_outgoings():
        target = ChebiEntity(other.get_target_chebi_id())
        out_lines.append(
            f"    • {name} {other.get_type()} {brief_description(target)}")

    in_lines = []  # type: List[str]
    for other in entity.get_incomings():
        target = ChebiEntity(other.get_target_chebi_id())
        in_lines.append(
            f"    • {brief_description(target)} {other.get_type()} {name}")

    lines = ([entity.get_name(), f"  ► OUTGOING ({len(out_lines)})"] +
             out_lines + [f"  ► INCOMING ({len(in_lines)})"] + in_lines)
    report = "\n".join(lines)
    log.info(f"{entity.get_id()}:\n{report}")
예제 #2
0
 def has_roles(self):
     if self.chebi_id:
         entity = ChebiEntity('CHEBI:' + str(self.chebi_id))
         outdict = dict()
         for relation in entity.get_outgoings():
             if relation.get_type() == 'has_role':
                 tid = relation.get_target_chebi_id()
                 t = ChebiEntity(tid)
                 s = re.findall(r'\d+', tid)
                 outdict[t.get_name()] = int(s[0])
         return outdict
     else:
         return ''
예제 #3
0
def gen_ancestor_info(entity: ChebiEntity,
                      relationships: List[str] = None,
                      max_generations: int = None,
                      starting_generation_: int = 0,
                      seen_: Set[HashableChebiEntity] = None) \
        -> Generator[Tuple[HashableChebiEntity, str, int], None, None]:
    """
    Retrieves all ancestors ("outgoing" links).

    Args:
        entity:
            starting entity
        relationships:
            list of valid relationship types, e.g. "has_role"
        max_generations:
            maximum number of generations to pursue, or ``None`` for unlimited
        starting_generation_:
            for internal use only, for recursion
        seen_:
            for internal use only, for recursion

    Returns:
        list: of tuples ``entity, relationship, n_generations_above_start``
    """
    if max_generations is not None and starting_generation_ >= max_generations:
        return
    assert starting_generation_ == 0 or seen_ is not None
    seen_ = seen_ or set()  # type: Set[HashableChebiEntity]
    relationships = relationships or DEFAULT_ANCESTOR_RELATIONSHIPS
    log.debug(f"Finding ancestors of {brief_description(entity)} "
              f"(generation {starting_generation_}) "
              f"via relationships {relationships!r}")
    for rel in entity.get_outgoings():  # type: Relation
        if rel.get_type() in relationships:
            target = HashableChebiEntity(rel.get_target_chebi_id())
            log.debug(f"... found {brief_description(target)}")
            if target in seen_:
                # log.debug(f"Skipping {target!r}")
                continue
            seen_.add(target)
            yield target, rel.get_type(), starting_generation_ + 1
            yield from gen_ancestor_info(
                entity=target,
                relationships=relationships,
                starting_generation_=starting_generation_ + 1,
                seen_=seen_,
            )
예제 #4
0
def check_line_for_carboxylate(line):
    """Check a line from the CHEBI compounds file for carboxylic acid.
    Returns name of the protonated form.

    """
    # USING OFFLINE FILE -- NOT COMPLETE
    # ID, _, _, _, parent_id, name, notes, _, _, star = line
    # print(name)
    # print(notes)
    # if 'Conjugate base of ' in notes:
    #     if name[-3:] == 'ate':
    #         acid_name = notes.replace("Conjugate base of ", '')
    #         acid_name = acid_name.split('acid')[0] + 'acid'
    #         print('Conjugate base of:', acid_name, '<<<<<<<<<<')
    #         return acid_name
    # Using libchebipy -- Online:
    ID, _, _, _, parent_id, name, notes, _, _, star = line
    entity = ChebiEntity(ID)
    outgoings = entity.get_outgoings()
    for out in outgoings:
        type = out.get_type()
        id = out.get_target_chebi_id()
        if type == 'is_conjugate_base_of':
            print(out)
            # use regular expression to remove any non alphabetic
            # characters
            # that may follow the name
            only_alph = sub('[^A-Za-z]', '', name)
            print(only_alph)
            if only_alph[-3:] == 'ate' and only_alph[-5:] != 'phate':
                acid_ID = id.replace("CHEBI:", "")
                print('acid ID:', acid_ID)
                acid_entity = ChebiEntity(acid_ID)
                acid_name = acid_entity.get_name()
                print('Conjugate base of:', acid_name, '<<<<<<<<<<')
                return acid_name
    return None
예제 #5
0
class TestChebiEntity(unittest.TestCase):
    '''COMMENT'''

    def setUp(self):
        '''COMMENT'''
        self.__existing = ChebiEntity('4167')
        self.__secondary = ChebiEntity('CHEBI:5585')

    def test_get_non_existing(self):
        '''COMMENT'''
        self.assertRaises(ChebiException, ChebiEntity, '-1')

    def test_get_id_existing(self):
        '''COMMENT'''
        self.assertTrue(self.__existing.get_id() == 'CHEBI:4167')

    def test_get_id_secondary(self):
        '''COMMENT'''
        self.assertTrue(self.__secondary.get_id() == 'CHEBI:5585')

    def test_get_formulae_existing(self):
        '''COMMENT'''
        this_formula = Formula('C6H12O6', 'KEGG COMPOUND')
        self.assertTrue(this_formula in self.__existing.get_formulae())

    def test_get_formulae_secondary(self):
        '''COMMENT'''
        this_formula = Formula('H2O', 'ChEBI')
        self.assertTrue(this_formula in self.__secondary.get_formulae())

    def test_get_formula_existing(self):
        '''COMMENT'''
        self.assertTrue(self.__existing.get_formula() == 'C6H12O6')

    def test_get_formula_secondary(self):
        '''COMMENT'''
        self.assertTrue(self.__secondary.get_formula() == 'H2O')

    def test_get_mass_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_mass(), 180.15588)

    def test_get_mass_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_mass(), 18.01530)

    def test_get_charge_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_charge(), 0)

    def test_get_charge_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_charge(), 0)

    def test_get_charge_secondary2(self):
        '''COMMENT'''
        self.assertEquals(-2, ChebiEntity('43474').get_charge())

    def test_get_comments_existing(self):
        '''COMMENT'''
        this_chebi_entity = ChebiEntity('29044')
        this_comment = Comment('General', 'General',
                               'The substituent name \'3-oxoprop-2-enyl\' is '
                               'incorrect but is used in various databases.',
                               datetime.datetime.strptime('2005-03-18',
                                                          '%Y-%M-%d'))
        self.assertTrue(this_comment in this_chebi_entity.get_comments())

    def test_get_comments_secondary(self):
        '''COMMENT'''
        this_chebi_entity = ChebiEntity('11505')
        this_comment = Comment('General', 'General',
                               'The substituent name \'3-oxoprop-2-enyl\' is '
                               'incorrect but is used in various databases.',
                               datetime.datetime.strptime('2005-03-18',
                                                          '%Y-%M-%d'))
        self.assertTrue(this_comment in this_chebi_entity.get_comments())

    def test_get_source_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_source(), 'KEGG COMPOUND')

    def test_get_source_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_source(), 'KEGG COMPOUND')

    def test_get_prnt_id_existing(self):
        '''COMMENT'''
        self.assertIsNone(self.__existing.get_parent_id())

    def test_get_prnt_id_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_parent_id(), 'CHEBI:15377')

    def test_get_name_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_name(), 'D-glucopyranose')

    def test_get_name_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_name(), 'water')

    def test_get_definition_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_definition(),
                         'A glucopyranose having D-configuration.')

    def test_get_definition_secondary(self):
        '''COMMENT'''
        this_chebi_entity = ChebiEntity('41140')
        self.assertEqual(this_chebi_entity.get_definition(),
                         'D-Glucopyranose with beta configuration at the '
                         'anomeric centre.')

    def test_get_mod_on_existing(self):
        '''COMMENT'''
        self.assertTrue(self.__existing.get_modified_on() >
                        datetime.datetime.strptime('2014-01-01',
                                                   '%Y-%M-%d'))

    def test_get_mod_on_secondary(self):
        '''COMMENT'''
        self.assertIsNotNone(self.__secondary.get_modified_on())

    def test_get_created_by_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_created_by(), 'CHEBI')

    def test_get_created_by_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_created_by(), 'ops$mennis')

    def test_get_star_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_star(), 3)

    def test_get_star_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_star(), 3)

    def test_get_db_acc_existing(self):
        '''COMMENT'''
        dat_acc = DatabaseAccession('MetaCyc accession', 'D-Glucose',
                                    'MetaCyc')
        self.assertTrue(dat_acc in self.__existing.get_database_accessions())

    def test_get_db_acc_secondary(self):
        '''COMMENT'''
        dat_acc = DatabaseAccession('MetaCyc accession', 'WATER', 'MetaCyc')
        self.assertTrue(dat_acc in self.__secondary.get_database_accessions())

    def test_get_inchi_existing(self):
        '''COMMENT'''
        inchi = 'InChI=1S/C6H12O6/c7-1-2-3(8)4(9)5(10)6(11)12-2/' + \
            'h2-11H,1H2/t2-,3-,4+,5-,6?/m1/s1'
        self.assertEqual(self.__existing.get_inchi(), inchi)

    def test_get_inchi_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_inchi(), 'InChI=1S/H2O/h1H2')

    def test_get_inchi_key_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_inchi_key(),
                         'WQZGKKKJIJFFOK-GASJEMHNSA-N')

    def test_get_inchi_key_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_inchi_key(),
                         'XLYOFNOQVPJJNP-UHFFFAOYSA-N')

    def test_get_smiles_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_smiles(),
                         'OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O')

    def test_get_smiles_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_smiles(), '[H]O[H]')

    def test_get_mol_existing(self):
        '''COMMENT'''
        chebi_id = 73938
        this_chebi_entity = ChebiEntity(str(chebi_id))
        self.assertEqual(this_chebi_entity.get_mol(),
                         _read_mol_file(chebi_id))

    def test_get_mol_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_mol(), _read_mol_file(15377))

    def test_get_mol_file_existing(self):
        '''COMMENT'''
        chebi_id = 73938
        self.__get_mol_file(chebi_id, chebi_id)

    def test_get_mol_file_secondary(self):
        '''COMMENT'''
        read_id = 15377
        retrieved_id = 42857
        self.__get_mol_file(read_id, retrieved_id)

    def test_get_names_existing(self):
        '''COMMENT'''
        this_name = Name('Grape sugar', 'SYNONYM', 'KEGG COMPOUND', False,
                         'en')
        self.assertTrue(this_name in self.__existing.get_names())

    def test_get_names_secondary(self):
        '''COMMENT'''
        this_name = Name('eau', 'SYNONYM', 'ChEBI', False, 'fr')
        self.assertTrue(this_name in self.__secondary.get_names())

    def test_get_references_existing(self):
        '''COMMENT'''
        this_chebi_entity = ChebiEntity('15347')
        this_reference = Reference('WO2006008754', 'Patent', '',
                                   'NOVEL INTERMEDIATES FOR LINEZOLID '
                                   'AND RELATED COMPOUNDS')

        self.assertTrue(this_reference in this_chebi_entity.get_references())

    def test_get_references_secondary(self):
        '''COMMENT'''
        this_chebi_entity = ChebiEntity('22182')
        this_reference = Reference('WO2006008754', 'Patent', '',
                                   'NOVEL INTERMEDIATES FOR LINEZOLID '
                                   'AND RELATED COMPOUNDS')
        self.assertTrue(this_reference in this_chebi_entity.get_references())

    def test_get_cmp_orig_existing(self):
        '''COMMENT'''
        this_compound_origin = CompoundOrigin('H**o sapiens', 'NCBI:9606',
                                              None, None, None, None,
                                              'DOI', '10.1038/nbt.2488', None)
        self.assertTrue(this_compound_origin
                        in self.__existing.get_compound_origins())

    def test_get_cmp_orig_secondary(self):
        '''COMMENT'''
        this_compound_origin = CompoundOrigin('H**o sapiens', 'NCBI:9606',
                                              None, None, None, None,
                                              'DOI', '10.1038/nbt.2488', None)
        self.assertTrue(this_compound_origin
                        in self.__secondary.get_compound_origins())

    def test_get_out_existing(self):
        '''COMMENT'''
        this_relation = Relation('is_a', '17634', 'C')
        self.assertTrue(this_relation in self.__existing.get_outgoings())

    def test_get_out_secondary(self):
        '''COMMENT'''
        this_relation = Relation('has_role', 'CHEBI:48360', 'C')
        self.assertTrue(this_relation in self.__secondary.get_outgoings())

    def test_get_in_existing(self):
        '''COMMENT'''
        this_relation = Relation('has_functional_parent', 'CHEBI:15866', 'C')
        self.assertTrue(this_relation in self.__existing.get_incomings())

    def test_get_in_secondary(self):
        '''COMMENT'''
        this_relation = Relation('is_conjugate_acid_of', '29412', 'C')
        self.assertTrue(this_relation in self.__secondary.get_incomings())

    def __get_mol_file(self, read_id, retrieved_id):
        '''COMMENT'''
        mol_read = _read_mol_file(read_id)
        this_chebi_entity = ChebiEntity(str(retrieved_id))
        textfile_retrieved = open(this_chebi_entity.get_mol_filename(), 'r')
        mol_retrieved = textfile_retrieved.read()
        textfile_retrieved.close()
        self.assertEquals(mol_read, mol_retrieved)
예제 #6
0
class TestChebiEntity(unittest.TestCase):
    '''COMMENT'''
    def setUp(self):
        '''COMMENT'''
        self.__existing = ChebiEntity('4167')
        self.__secondary = ChebiEntity('CHEBI:5585')

    def test_get_non_existing(self):
        '''COMMENT'''
        self.assertRaises(ChebiException, ChebiEntity, '-1')

    def test_get_id_existing(self):
        '''COMMENT'''
        self.assertTrue(self.__existing.get_id() == 'CHEBI:4167')

    def test_get_id_secondary(self):
        '''COMMENT'''
        self.assertTrue(self.__secondary.get_id() == 'CHEBI:5585')

    def test_get_formulae_existing(self):
        '''COMMENT'''
        this_formula = Formula('C6H12O6', 'KEGG COMPOUND')
        self.assertTrue(this_formula in self.__existing.get_formulae())

    def test_get_formulae_secondary(self):
        '''COMMENT'''
        this_formula = Formula('H2O', 'ChEBI')
        self.assertTrue(this_formula in self.__secondary.get_formulae())

    def test_get_formula_existing(self):
        '''COMMENT'''
        self.assertTrue(self.__existing.get_formula() == 'C6H12O6')

    def test_get_formula_secondary(self):
        '''COMMENT'''
        self.assertTrue(self.__secondary.get_formula() == 'H2O')

    def test_get_mass_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_mass(), 180.15588)

    def test_get_mass_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_mass(), 18.01530)

    def test_get_charge_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_charge(), 0)

    def test_get_charge_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_charge(), 0)

    def test_get_charge_secondary2(self):
        '''COMMENT'''
        self.assertEquals(-2, ChebiEntity('43474').get_charge())

    def test_get_comments_existing(self):
        '''COMMENT'''
        this_chebi_entity = ChebiEntity('29044')
        this_comment = Comment(
            'General', 'General',
            'The substituent name \'3-oxoprop-2-enyl\' is '
            'incorrect but is used in various databases.',
            datetime.datetime.strptime('2005-03-18', '%Y-%M-%d'))
        self.assertTrue(this_comment in this_chebi_entity.get_comments())

    def test_get_comments_secondary(self):
        '''COMMENT'''
        this_chebi_entity = ChebiEntity('11505')
        this_comment = Comment(
            'General', 'General',
            'The substituent name \'3-oxoprop-2-enyl\' is '
            'incorrect but is used in various databases.',
            datetime.datetime.strptime('2005-03-18', '%Y-%M-%d'))
        self.assertTrue(this_comment in this_chebi_entity.get_comments())

    def test_get_source_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_source(), 'KEGG COMPOUND')

    def test_get_source_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_source(), 'KEGG COMPOUND')

    def test_get_prnt_id_existing(self):
        '''COMMENT'''
        self.assertIsNone(self.__existing.get_parent_id())

    def test_get_prnt_id_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_parent_id(), 'CHEBI:15377')

    def test_get_name_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_name(), 'D-glucopyranose')

    def test_get_name_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_name(), 'water')

    def test_get_definition_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_definition(),
                         'A glucopyranose having D-configuration.')

    def test_get_definition_secondary(self):
        '''COMMENT'''
        this_chebi_entity = ChebiEntity('41140')
        self.assertEqual(
            this_chebi_entity.get_definition(),
            'D-Glucopyranose with beta configuration at the '
            'anomeric centre.')

    def test_get_mod_on_existing(self):
        '''COMMENT'''
        self.assertTrue(self.__existing.get_modified_on() >
                        datetime.datetime.strptime('2014-01-01', '%Y-%M-%d'))

    def test_get_mod_on_secondary(self):
        '''COMMENT'''
        self.assertIsNotNone(self.__secondary.get_modified_on())

    def test_get_created_by_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_created_by(), 'CHEBI')

    def test_get_created_by_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_created_by(), 'ops$mennis')

    def test_get_star_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_star(), 3)

    def test_get_star_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_star(), 3)

    def test_get_db_acc_existing(self):
        '''COMMENT'''
        dat_acc = DatabaseAccession('MetaCyc accession', 'D-Glucose',
                                    'MetaCyc')
        self.assertTrue(dat_acc in self.__existing.get_database_accessions())

    def test_get_db_acc_secondary(self):
        '''COMMENT'''
        dat_acc = DatabaseAccession('MetaCyc accession', 'WATER', 'MetaCyc')
        self.assertTrue(dat_acc in self.__secondary.get_database_accessions())

    def test_get_inchi_existing(self):
        '''COMMENT'''
        inchi = 'InChI=1S/C6H12O6/c7-1-2-3(8)4(9)5(10)6(11)12-2/' + \
            'h2-11H,1H2/t2-,3-,4+,5-,6?/m1/s1'
        self.assertEqual(self.__existing.get_inchi(), inchi)

    def test_get_inchi_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_inchi(), 'InChI=1S/H2O/h1H2')

    def test_get_inchi_key_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_inchi_key(),
                         'WQZGKKKJIJFFOK-GASJEMHNSA-N')

    def test_get_inchi_key_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_inchi_key(),
                         'XLYOFNOQVPJJNP-UHFFFAOYSA-N')

    def test_get_smiles_existing(self):
        '''COMMENT'''
        self.assertEqual(self.__existing.get_smiles(),
                         'OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O')

    def test_get_smiles_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_smiles(), '[H]O[H]')

    def test_get_mol_existing(self):
        '''COMMENT'''
        chebi_id = 73938
        this_chebi_entity = ChebiEntity(str(chebi_id))
        self.assertEqual(this_chebi_entity.get_mol(), _read_mol_file(chebi_id))

    def test_get_mol_secondary(self):
        '''COMMENT'''
        self.assertEqual(self.__secondary.get_mol(), _read_mol_file(15377))

    def test_get_mol_file_existing(self):
        '''COMMENT'''
        chebi_id = 73938
        self.__get_mol_file(chebi_id, chebi_id)

    def test_get_mol_file_secondary(self):
        '''COMMENT'''
        read_id = 15377
        retrieved_id = 42857
        self.__get_mol_file(read_id, retrieved_id)

    def test_get_names_existing(self):
        '''COMMENT'''
        this_name = Name('Grape sugar', 'SYNONYM', 'KEGG COMPOUND', False,
                         'en')
        self.assertTrue(this_name in self.__existing.get_names())

    def test_get_names_secondary(self):
        '''COMMENT'''
        this_name = Name('eau', 'SYNONYM', 'ChEBI', False, 'fr')
        self.assertTrue(this_name in self.__secondary.get_names())

    def test_get_references_existing(self):
        '''COMMENT'''
        this_chebi_entity = ChebiEntity('15347')
        this_reference = Reference(
            'WO2006008754', 'Patent', '', 'NOVEL INTERMEDIATES FOR LINEZOLID '
            'AND RELATED COMPOUNDS')

        self.assertTrue(this_reference in this_chebi_entity.get_references())

    def test_get_references_secondary(self):
        '''COMMENT'''
        this_chebi_entity = ChebiEntity('22182')
        this_reference = Reference(
            'WO2006008754', 'Patent', '', 'NOVEL INTERMEDIATES FOR LINEZOLID '
            'AND RELATED COMPOUNDS')
        self.assertTrue(this_reference in this_chebi_entity.get_references())

    def test_get_cmp_orig_existing(self):
        '''COMMENT'''
        this_compound_origin = CompoundOrigin('H**o sapiens', 'NCBI:9606',
                                              None, None, None, None, 'DOI',
                                              '10.1038/nbt.2488', None)
        self.assertTrue(
            this_compound_origin in self.__existing.get_compound_origins())

    def test_get_cmp_orig_secondary(self):
        '''COMMENT'''
        this_compound_origin = CompoundOrigin('H**o sapiens', 'NCBI:9606',
                                              None, None, None, None, 'DOI',
                                              '10.1038/nbt.2488', None)
        self.assertTrue(
            this_compound_origin in self.__secondary.get_compound_origins())

    def test_get_out_existing(self):
        '''COMMENT'''
        this_relation = Relation('is_a', '17634', 'C')
        self.assertTrue(this_relation in self.__existing.get_outgoings())

    def test_get_out_secondary(self):
        '''COMMENT'''
        this_relation = Relation('has_role', 'CHEBI:48360', 'C')
        self.assertTrue(this_relation in self.__secondary.get_outgoings())

    def test_get_in_existing(self):
        '''COMMENT'''
        this_relation = Relation('has_functional_parent', 'CHEBI:15866', 'C')
        self.assertTrue(this_relation in self.__existing.get_incomings())

    def test_get_in_secondary(self):
        '''COMMENT'''
        this_relation = Relation('is_conjugate_acid_of', '29412', 'C')
        self.assertTrue(this_relation in self.__secondary.get_incomings())

    def __get_mol_file(self, read_id, retrieved_id):
        '''COMMENT'''
        mol_read = _read_mol_file(read_id)
        this_chebi_entity = ChebiEntity(str(retrieved_id))
        textfile_retrieved = open(this_chebi_entity.get_mol_filename(), 'r')
        mol_retrieved = textfile_retrieved.read()
        textfile_retrieved.close()
        self.assertEquals(mol_read, mol_retrieved)