import io import sys import pytest from flexmock import flexmock from borgmatic.config import load as module def test_load_configuration_parses_contents(): builtins = flexmock(sys.modules['builtins']) config_file = io.StringIO('key: value') config_file.name = 'config.yaml' builtins.should_receive('open').with_args('config.yaml').and_return(config_file) assert module.load_configuration('config.yaml') == {'key': 'value'} def test_load_configuration_replaces_constants(): builtins = flexmock(sys.modules['builtins']) config_file = io.StringIO( ''' constants: key: value key: {key} ''' ) config_file.name = 'config.yaml' builtins.should_receive('open').with_args('config.yaml').and_return(config_file) assert module.load_configuration('config.yaml') == {'key': 'value'} def test_load_configuration_replaces_complex_constants(): builtins = flexmock(sys.modules['builtins']) config_file = io.StringIO( ''' constants: key: subkey: value key: {key} ''' ) config_file.name = 'config.yaml' builtins.should_receive('open').with_args('config.yaml').and_return(config_file) assert module.load_configuration('config.yaml') == {'key': {'subkey': 'value'}} def test_load_configuration_inlines_include_relative_to_current_directory(): builtins = flexmock(sys.modules['builtins']) flexmock(module.os).should_receive('getcwd').and_return('/tmp') flexmock(module.os.path).should_receive('isabs').and_return(False) flexmock(module.os.path).should_receive('exists').and_return(True) include_file = io.StringIO('value') include_file.name = 'include.yaml' builtins.should_receive('open').with_args('/tmp/include.yaml').and_return(include_file) config_file = io.StringIO('key: !include include.yaml') config_file.name = 'config.yaml' builtins.should_receive('open').with_args('config.yaml').and_return(config_file) assert module.load_configuration('config.yaml') == {'key': 'value'} def test_load_configuration_inlines_include_relative_to_config_parent_directory(): builtins = flexmock(sys.modules['builtins']) flexmock(module.os).should_receive('getcwd').and_return('/tmp') flexmock(module.os.path).should_receive('isabs').with_args('/etc').and_return(True) flexmock(module.os.path).should_receive('isabs').with_args('/etc/config.yaml').and_return(True) flexmock(module.os.path).should_receive('isabs').with_args('include.yaml').and_return(False) flexmock(module.os.path).should_receive('exists').with_args('/tmp/include.yaml').and_return( False ) flexmock(module.os.path).should_receive('exists').with_args('/etc/include.yaml').and_return( True ) include_file = io.StringIO('value') include_file.name = 'include.yaml' builtins.should_receive('open').with_args('/etc/include.yaml').and_return(include_file) config_file = io.StringIO('key: !include include.yaml') config_file.name = '/etc/config.yaml' builtins.should_receive('open').with_args('/etc/config.yaml').and_return(config_file) assert module.load_configuration('/etc/config.yaml') == {'key': 'value'} def test_load_configuration_raises_if_relative_include_does_not_exist(): builtins = flexmock(sys.modules['builtins']) flexmock(module.os).should_receive('getcwd').and_return('/tmp') flexmock(module.os.path).should_receive('isabs').with_args('/etc').and_return(True) flexmock(module.os.path).should_receive('isabs').with_args('/etc/config.yaml').and_return(True) flexmock(module.os.path).should_receive('isabs').with_args('include.yaml').and_return(False) flexmock(module.os.path).should_receive('exists').and_return(False) config_file = io.StringIO('key: !include include.yaml') config_file.name = '/etc/config.yaml' builtins.should_receive('open').with_args('/etc/config.yaml').and_return(config_file) with pytest.raises(FileNotFoundError): module.load_configuration('/etc/config.yaml') def test_load_configuration_inlines_absolute_include(): builtins = flexmock(sys.modules['builtins']) flexmock(module.os).should_receive('getcwd').and_return('/tmp') flexmock(module.os.path).should_receive('isabs').and_return(True) flexmock(module.os.path).should_receive('exists').never() include_file = io.StringIO('value') include_file.name = '/root/include.yaml' builtins.should_receive('open').with_args('/root/include.yaml').and_return(include_file) config_file = io.StringIO('key: !include /root/include.yaml') config_file.name = 'config.yaml' builtins.should_receive('open').with_args('config.yaml').and_return(config_file) assert module.load_configuration('config.yaml') == {'key': 'value'} def test_load_configuration_raises_if_absolute_include_does_not_exist(): builtins = flexmock(sys.modules['builtins']) flexmock(module.os).should_receive('getcwd').and_return('/tmp') flexmock(module.os.path).should_receive('isabs').and_return(True) builtins.should_receive('open').with_args('/root/include.yaml').and_raise(FileNotFoundError) config_file = io.StringIO('key: !include /root/include.yaml') config_file.name = 'config.yaml' builtins.should_receive('open').with_args('config.yaml').and_return(config_file) with pytest.raises(FileNotFoundError): assert module.load_configuration('config.yaml') def test_load_configuration_merges_include(): builtins = flexmock(sys.modules['builtins']) flexmock(module.os).should_receive('getcwd').and_return('/tmp') flexmock(module.os.path).should_receive('isabs').and_return(False) flexmock(module.os.path).should_receive('exists').and_return(True) include_file = io.StringIO( ''' foo: bar baz: quux ''' ) include_file.name = 'include.yaml' builtins.should_receive('open').with_args('/tmp/include.yaml').and_return(include_file) config_file = io.StringIO( ''' foo: override <<: !include include.yaml ''' ) config_file.name = 'config.yaml' builtins.should_receive('open').with_args('config.yaml').and_return(config_file) assert module.load_configuration('config.yaml') == {'foo': 'override', 'baz': 'quux'} def test_load_configuration_with_retain_tag_merges_include_but_keeps_local_values(): builtins = flexmock(sys.modules['builtins']) flexmock(module.os).should_receive('getcwd').and_return('/tmp') flexmock(module.os.path).should_receive('isabs').and_return(False) flexmock(module.os.path).should_receive('exists').and_return(True) include_file = io.StringIO( ''' stuff: foo: bar baz: quux other: a: b c: d ''' ) include_file.name = 'include.yaml' builtins.should_receive('open').with_args('/tmp/include.yaml').and_return(include_file) config_file = io.StringIO( ''' stuff: !retain foo: override other: a: override <<: !include include.yaml ''' ) config_file.name = 'config.yaml' builtins.should_receive('open').with_args('config.yaml').and_return(config_file) assert module.load_configuration('config.yaml') == { 'stuff': {'foo': 'override'}, 'other': {'a': 'override', 'c': 'd'}, } def test_load_configuration_with_retain_tag_but_without_merge_include_raises(): builtins = flexmock(sys.modules['builtins']) flexmock(module.os).should_receive('getcwd').and_return('/tmp') flexmock(module.os.path).should_receive('isabs').and_return(False) flexmock(module.os.path).should_receive('exists').and_return(True) include_file = io.StringIO( ''' stuff: !retain foo: bar baz: quux ''' ) include_file.name = 'include.yaml' builtins.should_receive('open').with_args('/tmp/include.yaml').and_return(include_file) config_file = io.StringIO( ''' stuff: foo: override <<: !include include.yaml ''' ) config_file.name = 'config.yaml' builtins.should_receive('open').with_args('config.yaml').and_return(config_file) with pytest.raises(ValueError): module.load_configuration('config.yaml') def test_load_configuration_with_retain_tag_on_scalar_raises(): builtins = flexmock(sys.modules['builtins']) flexmock(module.os).should_receive('getcwd').and_return('/tmp') flexmock(module.os.path).should_receive('isabs').and_return(False) flexmock(module.os.path).should_receive('exists').and_return(True) include_file = io.StringIO( ''' stuff: foo: bar baz: quux ''' ) include_file.name = 'include.yaml' builtins.should_receive('open').with_args('/tmp/include.yaml').and_return(include_file) config_file = io.StringIO( ''' stuff: foo: !retain override <<: !include include.yaml ''' ) config_file.name = 'config.yaml' builtins.should_receive('open').with_args('config.yaml').and_return(config_file) with pytest.raises(ValueError): module.load_configuration('config.yaml') def test_load_configuration_with_omit_tag_merges_include_and_omits_requested_values(): builtins = flexmock(sys.modules['builtins']) flexmock(module.os).should_receive('getcwd').and_return('/tmp') flexmock(module.os.path).should_receive('isabs').and_return(False) flexmock(module.os.path).should_receive('exists').and_return(True) include_file = io.StringIO( ''' stuff: - a - b - c ''' ) include_file.name = 'include.yaml' builtins.should_receive('open').with_args('/tmp/include.yaml').and_return(include_file) config_file = io.StringIO( ''' stuff: - x - !omit b - y <<: !include include.yaml ''' ) config_file.name = 'config.yaml' builtins.should_receive('open').with_args('config.yaml').and_return(config_file) assert module.load_configuration('config.yaml') == {'stuff': ['a', 'c', 'x', 'y']} def test_load_configuration_with_omit_tag_on_unknown_value_merges_include_and_does_not_raise(): builtins = flexmock(sys.modules['builtins']) flexmock(module.os).should_receive('getcwd').and_return('/tmp') flexmock(module.os.path).should_receive('isabs').and_return(False) flexmock(module.os.path).should_receive('exists').and_return(True) include_file = io.StringIO( ''' stuff: - a - b - c ''' ) include_file.name = 'include.yaml' builtins.should_receive('open').with_args('/tmp/include.yaml').and_return(include_file) config_file = io.StringIO( ''' stuff: - x - !omit q - y <<: !include include.yaml ''' ) config_file.name = 'config.yaml' builtins.should_receive('open').with_args('config.yaml').and_return(config_file) assert module.load_configuration('config.yaml') == {'stuff': ['a', 'b', 'c', 'x', 'y']} def test_load_configuration_with_omit_tag_on_non_list_item_raises(): builtins = flexmock(sys.modules['builtins']) flexmock(module.os).should_receive('getcwd').and_return('/tmp') flexmock(module.os.path).should_receive('isabs').and_return(False) flexmock(module.os.path).should_receive('exists').and_return(True) include_file = io.StringIO( ''' stuff: - a - b - c ''' ) include_file.name = 'include.yaml' builtins.should_receive('open').with_args('/tmp/include.yaml').and_return(include_file) config_file = io.StringIO( ''' stuff: !omit - x - y <<: !include include.yaml ''' ) config_file.name = 'config.yaml' builtins.should_receive('open').with_args('config.yaml').and_return(config_file) with pytest.raises(ValueError): module.load_configuration('config.yaml') def test_load_configuration_with_omit_tag_on_non_scalar_list_item_raises(): builtins = flexmock(sys.modules['builtins']) flexmock(module.os).should_receive('getcwd').and_return('/tmp') flexmock(module.os.path).should_receive('isabs').and_return(False) flexmock(module.os.path).should_receive('exists').and_return(True) include_file = io.StringIO( ''' stuff: - foo: bar baz: quux ''' ) include_file.name = 'include.yaml' builtins.should_receive('open').with_args('/tmp/include.yaml').and_return(include_file) config_file = io.StringIO( ''' stuff: - !omit foo: bar baz: quux <<: !include include.yaml ''' ) config_file.name = 'config.yaml' builtins.should_receive('open').with_args('config.yaml').and_return(config_file) with pytest.raises(ValueError): module.load_configuration('config.yaml') def test_load_configuration_with_omit_tag_but_without_merge_raises(): builtins = flexmock(sys.modules['builtins']) flexmock(module.os).should_receive('getcwd').and_return('/tmp') flexmock(module.os.path).should_receive('isabs').and_return(False) flexmock(module.os.path).should_receive('exists').and_return(True) include_file = io.StringIO( ''' stuff: - a - !omit b - c ''' ) include_file.name = 'include.yaml' builtins.should_receive('open').with_args('/tmp/include.yaml').and_return(include_file) config_file = io.StringIO( ''' stuff: - x - y <<: !include include.yaml ''' ) config_file.name = 'config.yaml' builtins.should_receive('open').with_args('config.yaml').and_return(config_file) with pytest.raises(ValueError): module.load_configuration('config.yaml') def test_load_configuration_does_not_merge_include_list(): builtins = flexmock(sys.modules['builtins']) flexmock(module.os).should_receive('getcwd').and_return('/tmp') flexmock(module.os.path).should_receive('isabs').and_return(False) flexmock(module.os.path).should_receive('exists').and_return(True) include_file = io.StringIO( ''' - one - two ''' ) include_file.name = 'include.yaml' builtins.should_receive('open').with_args('/tmp/include.yaml').and_return(include_file) config_file = io.StringIO( ''' foo: bar repositories: <<: !include include.yaml ''' ) config_file.name = 'config.yaml' builtins.should_receive('open').with_args('config.yaml').and_return(config_file) with pytest.raises(module.ruamel.yaml.error.YAMLError): assert module.load_configuration('config.yaml') @pytest.mark.parametrize( 'node_class', ( module.ruamel.yaml.nodes.MappingNode, module.ruamel.yaml.nodes.SequenceNode, module.ruamel.yaml.nodes.ScalarNode, ), ) def test_raise_retain_node_error_raises(node_class): with pytest.raises(ValueError): module.raise_retain_node_error( loader=flexmock(), node=node_class(tag=flexmock(), value=flexmock()) ) def test_raise_omit_node_error_raises(): with pytest.raises(ValueError): module.raise_omit_node_error(loader=flexmock(), node=flexmock()) def test_filter_omitted_nodes(): nodes = [ module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='a'), module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='b'), module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='c'), module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='a'), module.ruamel.yaml.nodes.ScalarNode(tag='!omit', value='b'), module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='c'), ] result = module.filter_omitted_nodes(nodes) assert [item.value for item in result] == ['a', 'c', 'a', 'c'] def test_deep_merge_nodes_replaces_colliding_scalar_values(): node_values = [ ( module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='retention'), module.ruamel.yaml.nodes.MappingNode( tag='tag:yaml.org,2002:map', value=[ ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='keep_hourly' ), module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:int', value='24' ), ), ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='keep_daily' ), module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:int', value='7'), ), ], ), ), ( module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='retention'), module.ruamel.yaml.nodes.MappingNode( tag='tag:yaml.org,2002:map', value=[ ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='keep_daily' ), module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:int', value='5'), ), ], ), ), ] result = module.deep_merge_nodes(node_values) assert len(result) == 1 (section_key, section_value) = result[0] assert section_key.value == 'retention' options = section_value.value assert len(options) == 2 assert options[0][0].value == 'keep_hourly' assert options[0][1].value == '24' assert options[1][0].value == 'keep_daily' assert options[1][1].value == '5' def test_deep_merge_nodes_keeps_non_colliding_scalar_values(): node_values = [ ( module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='retention'), module.ruamel.yaml.nodes.MappingNode( tag='tag:yaml.org,2002:map', value=[ ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='keep_hourly' ), module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:int', value='24' ), ), ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='keep_daily' ), module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:int', value='7'), ), ], ), ), ( module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='retention'), module.ruamel.yaml.nodes.MappingNode( tag='tag:yaml.org,2002:map', value=[ ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='keep_minutely' ), module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:int', value='10' ), ), ], ), ), ] result = module.deep_merge_nodes(node_values) assert len(result) == 1 (section_key, section_value) = result[0] assert section_key.value == 'retention' options = section_value.value assert len(options) == 3 assert options[0][0].value == 'keep_hourly' assert options[0][1].value == '24' assert options[1][0].value == 'keep_daily' assert options[1][1].value == '7' assert options[2][0].value == 'keep_minutely' assert options[2][1].value == '10' def test_deep_merge_nodes_keeps_deeply_nested_values(): node_values = [ ( module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='storage'), module.ruamel.yaml.nodes.MappingNode( tag='tag:yaml.org,2002:map', value=[ ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='lock_wait' ), module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:int', value='5'), ), ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='extra_borg_options' ), module.ruamel.yaml.nodes.MappingNode( tag='tag:yaml.org,2002:map', value=[ ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='init' ), module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='--init-option' ), ), ], ), ), ], ), ), ( module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='storage'), module.ruamel.yaml.nodes.MappingNode( tag='tag:yaml.org,2002:map', value=[ ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='extra_borg_options' ), module.ruamel.yaml.nodes.MappingNode( tag='tag:yaml.org,2002:map', value=[ ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='prune' ), module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='--prune-option' ), ), ], ), ), ], ), ), ] result = module.deep_merge_nodes(node_values) assert len(result) == 1 (section_key, section_value) = result[0] assert section_key.value == 'storage' options = section_value.value assert len(options) == 2 assert options[0][0].value == 'lock_wait' assert options[0][1].value == '5' assert options[1][0].value == 'extra_borg_options' nested_options = options[1][1].value assert len(nested_options) == 2 assert nested_options[0][0].value == 'init' assert nested_options[0][1].value == '--init-option' assert nested_options[1][0].value == 'prune' assert nested_options[1][1].value == '--prune-option' def test_deep_merge_nodes_appends_colliding_sequence_values(): node_values = [ ( module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='hooks'), module.ruamel.yaml.nodes.MappingNode( tag='tag:yaml.org,2002:map', value=[ ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='before_backup' ), module.ruamel.yaml.nodes.SequenceNode( tag='tag:yaml.org,2002:seq', value=[ module.ruamel.yaml.ScalarNode( tag='tag:yaml.org,2002:str', value='echo 1' ), module.ruamel.yaml.ScalarNode( tag='tag:yaml.org,2002:str', value='echo 2' ), ], ), ), ], ), ), ( module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='hooks'), module.ruamel.yaml.nodes.MappingNode( tag='tag:yaml.org,2002:map', value=[ ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='before_backup' ), module.ruamel.yaml.nodes.SequenceNode( tag='tag:yaml.org,2002:seq', value=[ module.ruamel.yaml.ScalarNode( tag='tag:yaml.org,2002:str', value='echo 3' ), module.ruamel.yaml.ScalarNode( tag='tag:yaml.org,2002:str', value='echo 4' ), ], ), ), ], ), ), ] result = module.deep_merge_nodes(node_values) assert len(result) == 1 (section_key, section_value) = result[0] assert section_key.value == 'hooks' options = section_value.value assert len(options) == 1 assert options[0][0].value == 'before_backup' assert [item.value for item in options[0][1].value] == ['echo 1', 'echo 2', 'echo 3', 'echo 4'] def test_deep_merge_nodes_only_keeps_mapping_values_tagged_with_retain(): node_values = [ ( module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='retention'), module.ruamel.yaml.nodes.MappingNode( tag='tag:yaml.org,2002:map', value=[ ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='keep_hourly' ), module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:int', value='24' ), ), ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='keep_daily' ), module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:int', value='7'), ), ], ), ), ( module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='retention'), module.ruamel.yaml.nodes.MappingNode( tag='!retain', value=[ ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='keep_daily' ), module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:int', value='5'), ), ], ), ), ] result = module.deep_merge_nodes(node_values) assert len(result) == 1 (section_key, section_value) = result[0] assert section_key.value == 'retention' assert section_value.tag == 'tag:yaml.org,2002:map' options = section_value.value assert len(options) == 1 assert options[0][0].value == 'keep_daily' assert options[0][1].value == '5' def test_deep_merge_nodes_only_keeps_sequence_values_tagged_with_retain(): node_values = [ ( module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='hooks'), module.ruamel.yaml.nodes.MappingNode( tag='tag:yaml.org,2002:map', value=[ ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='before_backup' ), module.ruamel.yaml.nodes.SequenceNode( tag='tag:yaml.org,2002:seq', value=[ module.ruamel.yaml.ScalarNode( tag='tag:yaml.org,2002:str', value='echo 1' ), module.ruamel.yaml.ScalarNode( tag='tag:yaml.org,2002:str', value='echo 2' ), ], ), ), ], ), ), ( module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='hooks'), module.ruamel.yaml.nodes.MappingNode( tag='tag:yaml.org,2002:map', value=[ ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='before_backup' ), module.ruamel.yaml.nodes.SequenceNode( tag='!retain', value=[ module.ruamel.yaml.ScalarNode( tag='tag:yaml.org,2002:str', value='echo 3' ), module.ruamel.yaml.ScalarNode( tag='tag:yaml.org,2002:str', value='echo 4' ), ], ), ), ], ), ), ] result = module.deep_merge_nodes(node_values) assert len(result) == 1 (section_key, section_value) = result[0] assert section_key.value == 'hooks' options = section_value.value assert len(options) == 1 assert options[0][0].value == 'before_backup' assert options[0][1].tag == 'tag:yaml.org,2002:seq' assert [item.value for item in options[0][1].value] == ['echo 3', 'echo 4'] def test_deep_merge_nodes_skips_sequence_values_tagged_with_omit(): node_values = [ ( module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='hooks'), module.ruamel.yaml.nodes.MappingNode( tag='tag:yaml.org,2002:map', value=[ ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='before_backup' ), module.ruamel.yaml.nodes.SequenceNode( tag='tag:yaml.org,2002:seq', value=[ module.ruamel.yaml.ScalarNode( tag='tag:yaml.org,2002:str', value='echo 1' ), module.ruamel.yaml.ScalarNode( tag='tag:yaml.org,2002:str', value='echo 2' ), ], ), ), ], ), ), ( module.ruamel.yaml.nodes.ScalarNode(tag='tag:yaml.org,2002:str', value='hooks'), module.ruamel.yaml.nodes.MappingNode( tag='tag:yaml.org,2002:map', value=[ ( module.ruamel.yaml.nodes.ScalarNode( tag='tag:yaml.org,2002:str', value='before_backup' ), module.ruamel.yaml.nodes.SequenceNode( tag='tag:yaml.org,2002:seq', value=[ module.ruamel.yaml.ScalarNode(tag='!omit', value='echo 2'), module.ruamel.yaml.ScalarNode( tag='tag:yaml.org,2002:str', value='echo 3' ), ], ), ), ], ), ), ] result = module.deep_merge_nodes(node_values) assert len(result) == 1 (section_key, section_value) = result[0] assert section_key.value == 'hooks' options = section_value.value assert len(options) == 1 assert options[0][0].value == 'before_backup' assert [item.value for item in options[0][1].value] == ['echo 1', 'echo 3']