Esempio n. 1
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    def test_deletion(self, user_response):
        tab = ReferenceTab()
        model = Model()
        reference1 = Reference("r1")
        reference2 = Reference("r2")
        reference3 = Reference("r3")
        model.add_reference(reference1)
        model.add_reference(reference2)
        model.add_reference(reference3)
        model.setup_reference_table()
        assert len(model.references) == model.QtReferenceTable.rowCount() == 3
        tab.set_model(model)
        tab.confirmDeletion = Mock(return_value=user_response)

        item = tab.dataTable.item(1, 0)
        selected_reference = item.link
        source_index = tab.dataTable.indexFromItem(item)
        view_index = tab.proxyModel.mapFromSource(source_index)
        tab.dataView.selectRow(view_index.row())

        assert tab.confirmDeletion.called is False
        tab.deleteItemSlot()
        assert tab.confirmDeletion.called is True
        assert (selected_reference.id in model.references) is not user_response
        if user_response:
            assert len(
                model.references) == model.QtReferenceTable.rowCount() == 2
Esempio n. 2
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    def test_full_example(self):
        """ Test that a minimal evidence example is parsed correctly """

        xml_tree = ET.fromstring(full_evidence)
        model = Model()
        reaction = Reaction("Test")
        target_item = Gene("target_id")
        reference = Reference("ref_id")
        model.add_reaction(reaction)
        model.add_gene(target_item)
        model.add_reference(reference)

        assert len(model.all_evidences) == 0
        assert len(reaction.evidences) == 0

        parse_evidences_from_xml(xml_tree, model)

        assert len(model.all_evidences) == 1
        assert len(reaction.evidences) == 1

        evidence = list(reaction.evidences)[0]
        assert evidence.entity is reaction
        assert evidence.target is target_item
        assert evidence.assertion == "Catalyzed by"
        assert evidence.eco == "ECO:0000000"
        assert len(evidence.references) == 1
        assert list(evidence.references)[0] is reference
        assert evidence.comment == "test comment"
Esempio n. 3
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 def test_edit_item_dialog_reject(self):
     tab = ReferenceTab()
     model = Model()
     reference = Reference()
     model.add_reference(reference)
     model.setup_reference_table()
     model.QtReferenceTable.update_row_from_item = Mock()
     tab.set_model(model)
     tab.dataView.selectRow(0)
     assert model.QtReferenceTable.update_row_from_item.called is False
     tab.editItemSlot()
     assert model.QtReferenceTable.update_row_from_item.called is False
Esempio n. 4
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    def test_write_parse_consistency(self):
        add_evidences_to_xml(self.root, self.model)

        model = Model("New model")
        model.add_gene(self.gene)
        model.add_gene(self.target)
        model.add_reactions([self.reaction])
        model.add_reference(self.reference)

        assert len(model.all_evidences) == 0
        parse_evidences_from_xml(self.root, model)
        assert len(model.all_evidences) == 1

        evidence = model.all_evidences[self.evidence.internal_id]
        assert evidence == self.evidence
Esempio n. 5
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    def test_add_item_dialog_accept(self):
        tab = ReferenceTab()
        model = Model()
        model.add_reference = Mock()
        model.QtReferenceTable.update_row_from_item = Mock()
        tab.set_model(model)

        assert model.add_reference.called is False
        assert model.QtReferenceTable.update_row_from_item.called is False
        tab.addItemSlot()
        assert model.add_reference.called is True
        assert model.QtReferenceTable.update_row_from_item.called is True
Esempio n. 6
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class TestModelDeleteItems:

    @pytest.fixture(autouse=True)
    def setup_complete_model(self):
        self.model = Model("model")

        # Setup reaction1
        self.metabolite = Metabolite("m1")
        self.reaction = Reaction("r1")
        self.gene = Gene("g1")
        self.reaction.add_child(self.gene)
        self.model.add_genes((self.gene,))
        self.reaction.add_metabolites({self.metabolite: -1})
        self.model.add_reactions((self.reaction,))

        # Setup reaction2
        self.metabolite2 = Metabolite("m2")
        self.reaction2 = Reaction("r2")
        self.gene2 = Gene("g2")
        self.genegroup = GeneGroup()
        self.genegroup.add_child(self.gene2)
        self.reaction2.add_child(self.genegroup)
        self.model.add_genes((self.gene2,))
        self.reaction2.add_metabolites({self.metabolite2: 1})
        self.model.add_reactions((self.reaction2,))

        # Setup evidences
        self.evidence = Evidence(assertion="Catalyzes")
        self.evidence.set_entity(self.gene)
        self.evidence.set_target(self.reaction)
        self.reference = Reference()
        self.model.add_reference(self.reference)
        self.evidence.add_reference(self.reference)
        self.model.add_evidence(self.evidence)

        # Setup test case
        self.testcase = ModelTest()
        reaction_setting = ReactionSetting(self.reaction, 1000., -1000., 0.)
        gene_setting = GeneSetting(gene=self.gene2, activity=False)
        outcome = Outcome(self.reaction2, 0., "greater")
        self.testcase.add_outcome(outcome)
        self.testcase.add_setting(gene_setting)
        self.testcase.add_setting(reaction_setting)
        self.model.add_test(self.testcase)
        self.reference2 = Reference()
        self.model.add_reference(self.reference2)
        self.testcase.add_reference(self.reference2)

        self.model.setup_tables()

    def test_setup(self):
        # Test genes
        gene_in_model(self.gene, self.model)
        gene_in_model(self.gene2, self.model)

        # Test reactions
        reaction_in_model(self.reaction, self.model)
        reaction_in_model(self.reaction2, self.model)

        # Test metabolites
        metabolite_in_model(self.metabolite, self.model)
        metabolite_in_model(self.metabolite2, self.model)

        # Test evidences
        evidence_in_model(self.evidence, self.model)

        # Test model test
        case_in_model(self.testcase, self.model)

        # Test references
        reference_in_model(self.reference, self.model)
        reference_in_model(self.reference2, self.model)

        # Test connections
        # Reference <-> Evidence
        reference_in_item(self.reference, self.evidence)
        # Reference2 <-> Testcase
        reference_in_item(self.reference2, self.testcase)

        # Gene1 <-> Reaction1
        gene_in_reaction(self.gene, self.reaction)
        gene_in_reaction(self.gene2, self.reaction2)

        # Metabolite1 <-> Reaction1
        metabolite_in_reaction(self.metabolite, self.reaction)
        metabolite_in_reaction(self.metabolite2, self.reaction2)

        # Evidence <-> Gene1/Reaction
        item_in_evidence(self.gene, self.evidence)
        item_in_evidence(self.reaction, self.evidence)

    def test_deletion_metabolite(self):
        # Action
        self.model.gem_remove_metabolites((self.metabolite,))

        # Test gene
        gene_in_model(self.gene, self.model)
        gene_in_model(self.gene2, self.model)

        # Test reactions
        reaction_in_model(self.reaction, self.model)
        reaction_in_model(self.reaction2, self.model)

        # Test metabolites
        metabolite_in_model(self.metabolite, self.model, valid=False)
        metabolite_in_model(self.metabolite2, self.model)

        # Test evidences
        evidence_in_model(self.evidence, self.model)

        # Test model test
        case_in_model(self.testcase, self.model)

        # Test references
        reference_in_model(self.reference, self.model)
        reference_in_model(self.reference2, self.model)

        # Test connections
        # Reference <-> Evidence
        reference_in_item(self.reference, self.evidence)
        # Reference2 <-> Testcase
        reference_in_item(self.reference2, self.testcase)

        # Gene1 <-> Reaction1
        gene_in_reaction(self.gene, self.reaction)
        gene_in_reaction(self.gene2, self.reaction2)

        # Metabolite1 <-> Reaction1
        metabolite_in_reaction(self.metabolite, self.reaction, valid=False)
        metabolite_in_reaction(self.metabolite2, self.reaction2)

        # Evidence <-> Gene1/Reaction
        item_in_evidence(self.gene, self.evidence)
        item_in_evidence(self.reaction, self.evidence)

    def test_deletion_metabolite2(self):
        # Action
        self.model.gem_remove_metabolites((self.metabolite2,))

        # Test genes
        gene_in_model(self.gene, self.model)
        gene_in_model(self.gene2, self.model)

        # Test reactions
        reaction_in_model(self.reaction, self.model)
        reaction_in_model(self.reaction2, self.model)

        # Test metabolites
        metabolite_in_model(self.metabolite, self.model)
        metabolite_in_model(self.metabolite2, self.model, valid=False)

        # Test evidences
        evidence_in_model(self.evidence, self.model)

        # Test model test
        case_in_model(self.testcase, self.model)

        # Test references
        reference_in_model(self.reference, self.model)
        reference_in_model(self.reference2, self.model)

        # Test connections
        # Reference <-> Evidence
        reference_in_item(self.reference, self.evidence)
        # Reference2 <-> Testcase
        reference_in_item(self.reference2, self.testcase)

        # Gene1 <-> Reaction1
        gene_in_reaction(self.gene, self.reaction)
        gene_in_reaction(self.gene2, self.reaction2)

        # Metabolite1 <-> Reaction1
        metabolite_in_reaction(self.metabolite, self.reaction)
        metabolite_in_reaction(self.metabolite2, self.reaction2, valid=False)

        # Evidence <-> Gene1/Reaction
        item_in_evidence(self.gene, self.evidence)
        item_in_evidence(self.reaction, self.evidence)

    def test_delete_reaction1(self):
        ####
        # Delete reaction
        # Check:
        #   - gene present but removed from reaction1
        #   - metabolite present but removed from reaction1
        #   - reaction deleted
        #   - evidence deleted
        #   - testcase deleted
        #   - reference present but removed from evidence
        #   - reference2 present but removed from testcase
        ####

        # Action
        self.model.gem_remove_reactions((self.reaction,))

        # Test genes
        gene_in_model(self.gene, self.model)
        gene_in_model(self.gene2, self.model)

        # Test reactions
        reaction_in_model(self.reaction, self.model, valid=False)
        reaction_in_model(self.reaction2, self.model)

        # Test metabolites
        metabolite_in_model(self.metabolite, self.model)
        metabolite_in_model(self.metabolite2, self.model)

        # Test model test
        case_in_model(self.testcase, self.model, valid=False)

        # Test references
        reference_in_model(self.reference, self.model)
        reference_in_model(self.reference2, self.model)

        # Test connections
        # Reference <-> Evidence
        reference_in_item(self.reference, self.evidence, valid=False)
        reference_in_item(self.reference2, self.testcase, valid=False)

        # Gene1 <-> Reaction1
        gene_in_reaction(self.gene, self.reaction, valid=False)
        gene_in_reaction(self.gene2, self.reaction2)

        # Metabolite1 <-> Reaction1
        # Check metabolite is still in reaction, but reaction not in metabolite
        assert self.metabolite in self.reaction.metabolites
        assert self.reaction not in self.metabolite.reactions
        metabolite_in_reaction(self.metabolite2, self.reaction2)

        # Evidence <-> Gene1/Reaction
        item_in_evidence(self.gene, self.evidence, valid=False)
        item_in_evidence(self.reaction, self.evidence, valid=False)

        # Check evidence is removed when reference deleted
        del self.evidence
        gc.collect()
        assert len(self.model.all_evidences) == 0

    def test_deletion_reaction2(self):
        # Check:
        #   - reaction2 removed
        #   - test case removed
        #   - reference removed from testcase
        #   - gene2 removed from reaction

        # Action
        self.model.gem_remove_reactions((self.reaction2,))

        # Test genes
        gene_in_model(self.gene, self.model)
        gene_in_model(self.gene2, self.model)

        # Test reactions
        reaction_in_model(self.reaction, self.model)
        reaction_in_model(self.reaction2, self.model, valid=False)

        # Test metabolites
        metabolite_in_model(self.metabolite, self.model)
        metabolite_in_model(self.metabolite2, self.model)

        # Test evidences
        evidence_in_model(self.evidence, self.model)

        # Test model test
        case_in_model(self.testcase, self.model, valid=False)

        # Test references
        reference_in_model(self.reference, self.model)
        reference_in_model(self.reference2, self.model)

        # Test connections
        # Reference <-> Evidence
        reference_in_item(self.reference, self.evidence)
        # Reference2 <-> Testcase
        reference_in_item(self.reference2, self.testcase, valid=False)

        # Gene1 <-> Reaction1
        gene_in_reaction(self.gene, self.reaction)
        gene_in_reaction(self.gene2, self.reaction2, valid=False)

        # Metabolite1 <-> Reaction1
        metabolite_in_reaction(self.metabolite, self.reaction)
        # Check metabolite still in reaction, but reaction not in metabolite
        assert self.metabolite2 in self.reaction2.metabolites
        assert self.reaction2 not in self.metabolite2.reactions

        # Evidence <-> Gene1/Reaction
        item_in_evidence(self.gene, self.evidence)
        item_in_evidence(self.reaction, self.evidence)

    def test_delete_gene1(self):
        # Test gene deletion
        # Check:
        #   - Gene removed from model
        #   - Evidence removed from model

        # Action
        self.model.gem_remove_genes((self.gene,))

        # Test genes
        gene_in_model(self.gene, self.model, valid=False)
        gene_in_model(self.gene2, self.model)

        # Test reactions
        reaction_in_model(self.reaction, self.model)
        reaction_in_model(self.reaction2, self.model)

        # Test metabolites
        metabolite_in_model(self.metabolite, self.model)
        metabolite_in_model(self.metabolite2, self.model)

        # Test model test
        case_in_model(self.testcase, self.model)

        # Test references
        reference_in_model(self.reference, self.model)
        reference_in_model(self.reference2, self.model)

        # Test connections
        # Reference <-> Evidence
        reference_in_item(self.reference, self.evidence, valid=False)
        # Reference2 <-> Testcase
        reference_in_item(self.reference2, self.testcase)

        # Gene1 <-> Reaction1
        gene_in_reaction(self.gene, self.reaction, valid=False)
        gene_in_reaction(self.gene2, self.reaction2)

        # Metabolite1 <-> Reaction1
        metabolite_in_reaction(self.metabolite, self.reaction)
        metabolite_in_reaction(self.metabolite2, self.reaction2)

        # Evidence <-> Gene1/Reaction
        item_in_evidence(self.gene, self.evidence, valid=False)
        item_in_evidence(self.reaction, self.evidence, valid=False)

        # Check evidence is removed when reference deleted
        del self.evidence
        gc.collect()
        assert len(self.model.all_evidences) == 0

    def test_delete_gene2(self):
        # Test removal of gene2
        # Check:
        #   - Gene2 removed from model
        #   - Gene2 removed from reaction2
        #   - Testcase deleted from model
        #   - Reference2 removed from testcase

        # Action
        self.model.gem_remove_genes((self.gene2,))

        # Test genes
        gene_in_model(self.gene, self.model)
        gene_in_model(self.gene2, self.model, valid=False)

        # Test reactions
        reaction_in_model(self.reaction, self.model)
        reaction_in_model(self.reaction2, self.model)

        # Test metabolites
        metabolite_in_model(self.metabolite, self.model)
        metabolite_in_model(self.metabolite2, self.model)

        # Test evidences
        evidence_in_model(self.evidence, self.model)

        # Test model test
        case_in_model(self.testcase, self.model, valid=False)

        # Test references
        reference_in_model(self.reference, self.model)
        reference_in_model(self.reference2, self.model)

        # Test connections
        # Reference <-> Evidence
        reference_in_item(self.reference, self.evidence)
        # Reference2 <-> Testcase
        reference_in_item(self.reference2, self.testcase, valid=False)

        # Gene1 <-> Reaction1
        gene_in_reaction(self.gene, self.reaction)
        gene_in_reaction(self.gene2, self.reaction2, valid=False)

        # Metabolite1 <-> Reaction1
        metabolite_in_reaction(self.metabolite, self.reaction)
        metabolite_in_reaction(self.metabolite2, self.reaction2)

        # Evidence <-> Gene1/Reaction
        item_in_evidence(self.gene, self.evidence)
        item_in_evidence(self.reaction, self.evidence)

    def test_delete_testcase(self):
        # Action
        self.model.gem_remove_tests((self.testcase,))

        # Test genes
        gene_in_model(self.gene, self.model)
        gene_in_model(self.gene2, self.model)

        # Test reactions
        reaction_in_model(self.reaction, self.model)
        reaction_in_model(self.reaction2, self.model)

        # Test metabolites
        metabolite_in_model(self.metabolite, self.model)
        metabolite_in_model(self.metabolite2, self.model)

        # Test evidences
        evidence_in_model(self.evidence, self.model)

        # Test model test
        case_in_model(self.testcase, self.model, valid=False)

        # Test references
        reference_in_model(self.reference, self.model)
        reference_in_model(self.reference2, self.model)

        # Test connections
        # Reference <-> Evidence
        reference_in_item(self.reference, self.evidence)
        # Reference2 <-> Testcase
        reference_in_item(self.reference2, self.testcase, valid=False)

        # Gene1 <-> Reaction1
        gene_in_reaction(self.gene, self.reaction)
        gene_in_reaction(self.gene2, self.reaction2)

        # Metabolite1 <-> Reaction1
        metabolite_in_reaction(self.metabolite, self.reaction)
        metabolite_in_reaction(self.metabolite2, self.reaction2)

        # Evidence <-> Gene1/Reaction
        item_in_evidence(self.gene, self.evidence)
        item_in_evidence(self.reaction, self.evidence)

    def test_delete_referenec(self):
        # Action
        self.model.gem_remove_references((self.reference,))

        # Test genes
        gene_in_model(self.gene, self.model)
        gene_in_model(self.gene2, self.model)

        # Test reactions
        reaction_in_model(self.reaction, self.model)
        reaction_in_model(self.reaction2, self.model)

        # Test metabolites
        metabolite_in_model(self.metabolite, self.model)
        metabolite_in_model(self.metabolite2, self.model)

        # Test evidences
        evidence_in_model(self.evidence, self.model)

        # Test model test
        case_in_model(self.testcase, self.model)

        # Test references
        reference_in_model(self.reference, self.model, valid=False)
        reference_in_model(self.reference2, self.model)

        # Test connections
        # Reference <-> Evidence
        reference_in_item(self.reference, self.evidence, valid=False)
        # Reference2 <-> Testcase
        reference_in_item(self.reference2, self.testcase)

        # Gene1 <-> Reaction1
        gene_in_reaction(self.gene, self.reaction)
        gene_in_reaction(self.gene2, self.reaction2)

        # Metabolite1 <-> Reaction1
        metabolite_in_reaction(self.metabolite, self.reaction)
        metabolite_in_reaction(self.metabolite2, self.reaction2)

        # Evidence <-> Gene1/Reaction
        item_in_evidence(self.gene, self.evidence)
        item_in_evidence(self.reaction, self.evidence)

    def test_delete_reference2(self):
        # Action
        self.model.gem_remove_references((self.reference2,))

        # Test genes
        gene_in_model(self.gene, self.model)
        gene_in_model(self.gene2, self.model)

        # Test reactions
        reaction_in_model(self.reaction, self.model)
        reaction_in_model(self.reaction2, self.model)

        # Test metabolites
        metabolite_in_model(self.metabolite, self.model)
        metabolite_in_model(self.metabolite2, self.model)

        # Test evidences
        evidence_in_model(self.evidence, self.model)

        # Test model test
        case_in_model(self.testcase, self.model)

        # Test references
        reference_in_model(self.reference, self.model)
        reference_in_model(self.reference2, self.model, valid=False)

        # Test connections
        # Reference <-> Evidence
        reference_in_item(self.reference, self.evidence)
        # Reference2 <-> Testcase
        reference_in_item(self.reference2, self.testcase, valid=False)

        # Gene1 <-> Reaction1
        gene_in_reaction(self.gene, self.reaction)
        gene_in_reaction(self.gene2, self.reaction2)

        # Metabolite1 <-> Reaction1
        metabolite_in_reaction(self.metabolite, self.reaction)
        metabolite_in_reaction(self.metabolite2, self.reaction2)

        # Evidence <-> Gene1/Reaction
        item_in_evidence(self.gene, self.evidence)
        item_in_evidence(self.reaction, self.evidence)
Esempio n. 7
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class TestEvidence:

    @pytest.fixture(autouse=True)
    def setup_evidence(self):
        self.reaction = Reaction("r_id")
        self.gene = Gene("g_id")
        self.target = Gene("g_id2")
        self.model = Model("test id")
        self.reference = Reference()
        self.model.add_gene(self.gene)
        self.model.add_gene(self.target)
        self.model.add_reactions([self.reaction])
        self.model.add_reference(self.reference)

        # Set type
        self.assertion = "Catalyzed by"
        self.eco = "ECO:0000000"
        self.comment = "test"
        self.evidence = Evidence(entity=self.reaction, eco=self.eco,
                                 assertion=self.assertion, comment=self.comment, target=self.target)

        self.evidence.add_reference(self.reference)

        self.model.all_evidences[self.evidence.internal_id] = self.evidence

        self.root = Element("root", nsmap={None: ge_ns})

    def test_setup(self):
        assert self.evidence.entity is self.reaction
        assert self.evidence.target is self.target

        assert len(self.evidence.references) == 1
        assert list(self.evidence.references)[0] is self.reference

        assert self.evidence.assertion == self.assertion
        assert self.evidence.eco == self.eco
        assert self.evidence.comment == self.comment

    def test_add_evidence(self):
        add_evidences_to_xml(self.root, self.model)

        list_of_evidences = self.root.find(ge_listOfEvidences)
        assert list_of_evidences is not None
        assert len(list_of_evidences) == 1

        evidence_node = list_of_evidences.find(ge_evidence)
        assert evidence_node is not None
        assert evidence_node.get("entity_id") == self.reaction.id
        assert evidence_node.get("entity_type") == "Reaction"
        assert evidence_node.get("id") == self.evidence.internal_id
        assert evidence_node.get("comment") == self.comment
        assert evidence_node.get("target_id") == self.target.id
        assert evidence_node.get("target_type") == "Gene"
        assert evidence_node.get("assertion") == self.assertion
        assert evidence_node.get("eco") == self.eco

        evidence_references_node = evidence_node.find(ge_listOfReferenceLinks)
        assert evidence_references_node is not None
        assert len(evidence_references_node) == 1

        reference_link_node = evidence_references_node.find(ge_referenceLink)
        assert reference_link_node is not None
        assert reference_link_node.get("id") == self.reference.id

    def test_no_references_added_if_empty(self):
        self.evidence.remove_all_references()
        add_evidences_to_xml(self.root, self.model)

        list_of_evidences = self.root.find(ge_listOfEvidences)
        assert list_of_evidences is not None

        evidence_node = list_of_evidences.find(ge_evidence)
        assert evidence_node is not None

        # Check that reference not is not found
        assert evidence_node.find(ge_listOfReferenceLinks) is None

    def test_write_parse_consistency(self):
        add_evidences_to_xml(self.root, self.model)

        model = Model("New model")
        model.add_gene(self.gene)
        model.add_gene(self.target)
        model.add_reactions([self.reaction])
        model.add_reference(self.reference)

        assert len(model.all_evidences) == 0
        parse_evidences_from_xml(self.root, model)
        assert len(model.all_evidences) == 1

        evidence = model.all_evidences[self.evidence.internal_id]
        assert evidence == self.evidence

    def test_get_item_from_model(self):
        model = Model("test id")
        reaction = Reaction("r_id")
        metabolite = Metabolite("m_id")
        gene = Gene("g_id")
        # ToDo: Add gene group

        model.add_reactions([reaction])
        model.add_metabolites([metabolite]),
        model.add_gene(gene)
        # ToDo: Add gene group

        assert get_item_from_model("Model", model.id, model) is model
        assert get_item_from_model("Reaction", reaction.id, model) is reaction
        assert get_item_from_model("Metabolite", metabolite.id, model) is metabolite
        assert get_item_from_model("Gene", gene.id, model) is gene

        # Test expected errors

        # GeneGroup not implemented
        with pytest.raises(NotImplementedError):
            get_item_from_model("GeneGroup", "test_id", model)

        # ID not in model
        with pytest.raises(KeyError):
            get_item_from_model("Reaction", "Not in model", model)
        with pytest.raises(KeyError):
            get_item_from_model("Metabolite", "Not in model", model)
        with pytest.raises(KeyError):
            get_item_from_model("Gene", "Not in model", model)

    def test_minimal_example(self):
        """ Test that a minimal evidence example is parsed correctly """

        xml_tree = ET.fromstring(minimal_evidence)
        model = Model()
        reaction = Reaction("Test")
        model.add_reaction(reaction)

        assert len(model.all_evidences) == 0
        assert len(reaction.evidences) == 0

        parse_evidences_from_xml(xml_tree, model)

        assert len(model.all_evidences) == 1
        assert len(reaction.evidences) == 1

        evidence = list(reaction.evidences)[0]
        assert evidence.entity is reaction
        assert evidence.assertion == "Presence"

    def test_full_example(self):
        """ Test that a minimal evidence example is parsed correctly """

        xml_tree = ET.fromstring(full_evidence)
        model = Model()
        reaction = Reaction("Test")
        target_item = Gene("target_id")
        reference = Reference("ref_id")
        model.add_reaction(reaction)
        model.add_gene(target_item)
        model.add_reference(reference)

        assert len(model.all_evidences) == 0
        assert len(reaction.evidences) == 0

        parse_evidences_from_xml(xml_tree, model)

        assert len(model.all_evidences) == 1
        assert len(reaction.evidences) == 1

        evidence = list(reaction.evidences)[0]
        assert evidence.entity is reaction
        assert evidence.target is target_item
        assert evidence.assertion == "Catalyzed by"
        assert evidence.eco == "ECO:0000000"
        assert len(evidence.references) == 1
        assert list(evidence.references)[0] is reference
        assert evidence.comment == "test comment"