Coverage for tests/test_000_accretive/test_300_namespaces.py: 100%

1# vim: set filetype=python fileencoding=utf-8: 

2# -*- coding: utf-8 -*- 

3 

4#============================================================================# 

5# # 

6# Licensed under the Apache License, Version 2.0 (the "License"); # 

7# you may not use this file except in compliance with the License. # 

8# You may obtain a copy of the License at # 

9# # 

10# http://www.apache.org/licenses/LICENSE-2.0 # 

11# # 

12# Unless required by applicable law or agreed to in writing, software # 

13# distributed under the License is distributed on an "AS IS" BASIS, # 

14# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # 

15# See the License for the specific language governing permissions and # 

16# limitations under the License. # 

17# # 

18#============================================================================# 

19 

20 

21''' Assert correct function of namespaces. ''' 

22 

23# mypy: ignore-errors 

24# pylint: disable=attribute-defined-outside-init 

25# pylint: disable=invalid-name,magic-value-comparison,protected-access 

26 

27 

28import pytest 

29 

30from itertools import product 

31 

32from . import ( 

33 MODULES_QNAMES, 

34 PACKAGE_NAME, 

35 cache_import_module, 

36) 

37 

38 

39THESE_MODULE_QNAMES = tuple( 

40 name for name in MODULES_QNAMES if name.endswith( '.namespaces' ) ) 

41THESE_CLASSES_NAMES = ( 'Namespace', ) 

42 

43base = cache_import_module( f"{PACKAGE_NAME}.__" ) 

44exceptions = cache_import_module( f"{PACKAGE_NAME}.exceptions" ) 

45 

46 

47@pytest.mark.parametrize( 

48 'module_qname, class_name', 

49 product( THESE_MODULE_QNAMES, THESE_CLASSES_NAMES ) 

50) 

51def test_100_instantiation( module_qname, class_name ): 

52 ''' Class instantiates. ''' 

53 module = cache_import_module( module_qname ) 

54 Namespace = getattr( module, class_name ) 

55 ns1 = Namespace( ) 

56 assert isinstance( ns1, Namespace ) 

57 ns2 = Namespace( 

58 ( ( 'foo', 1 ), ( 'bar', 2 ) ), { 'unicorn': True }, orb = False ) 

59 assert isinstance( ns2, Namespace ) 

60 assert 1 == ns2.foo 

61 assert 2 == ns2.bar 

62 assert ns2.unicorn 

63 assert not ns2.orb 

64 assert ( 'foo', 'bar', 'unicorn', 'orb' ) == tuple( ns2.__dict__.keys( ) ) 

65 assert ( 1, 2, True, False ) == tuple( ns2.__dict__.values( ) ) 

66 

67 

68@pytest.mark.parametrize( 

69 'module_qname, class_name', 

70 product( THESE_MODULE_QNAMES, THESE_CLASSES_NAMES ) 

71) 

72def test_101_accretion( module_qname, class_name ): 

73 ''' Namespace accretes attributes. ''' 

74 module = cache_import_module( module_qname ) 

75 Object = getattr( module, class_name ) 

76 obj = Object( ) 

77 obj.attr = 42 

78 with pytest.raises( exceptions.IndelibleAttributeError ): 

79 obj.attr = -1 

80 assert 42 == obj.attr 

81 with pytest.raises( exceptions.IndelibleAttributeError ): 

82 del obj.attr 

83 assert 42 == obj.attr 

84 

85 

86@pytest.mark.parametrize( 

87 'module_qname, class_name', 

88 product( THESE_MODULE_QNAMES, THESE_CLASSES_NAMES ) 

89) 

90def test_102_string_representation( module_qname, class_name ): 

91 ''' Namespace has expected string representations. ''' 

92 module = cache_import_module( module_qname ) 

93 factory = getattr( module, class_name ) 

94 obj = factory( ) 

95 assert base.calculate_fqname( obj ) in repr( obj ) 

96 obj.a = 1 

97 obj.b = 2 

98 assert 'a = 1, b = 2' in repr( obj ) 

99 

100 

101@pytest.mark.parametrize( 

102 'module_qname, class_name', 

103 product( THESE_MODULE_QNAMES, THESE_CLASSES_NAMES ) 

104) 

105def test_105_dictionary_equality( module_qname, class_name ): 

106 ''' Dictionary is equivalent to another dictionary with same values. ''' 

107 from types import SimpleNamespace 

108 module = cache_import_module( module_qname ) 

109 factory = getattr( module, class_name ) 

110 ns1 = factory( foo = 1, bar = 2 ) 

111 ns2 = factory( ns1.__dict__ ) 

112 ns3 = SimpleNamespace( **ns1.__dict__ ) 

113 assert ns1 == ns2 

114 assert ns2 == ns1 

115 assert ns1 == ns3 

116 assert ns3 == ns1 

117 assert not ( ns1 == -1 ) # pylint: disable=superfluous-parens 

118 assert ns1 != -1 

119 assert ns1 != ( ) 

120 ns2.baz = 43 

121 assert ns1 != ns2 

122 assert ns2 != ns1 

123 

124 

125@pytest.mark.parametrize( 

126 'module_qname, class_name', 

127 product( THESE_MODULE_QNAMES, THESE_CLASSES_NAMES ) 

128) 

129def test_900_docstring_sanity( module_qname, class_name ): 

130 ''' Class has valid docstring. ''' 

131 module = cache_import_module( module_qname ) 

132 Object = getattr( module, class_name ) 

133 assert hasattr( Object, '__doc__' ) 

134 assert isinstance( Object.__doc__, str ) 

135 assert Object.__doc__ 

136 

137 

138@pytest.mark.parametrize( 

139 'module_qname, class_name', 

140 product( THESE_MODULE_QNAMES, THESE_CLASSES_NAMES ) 

141) 

142def test_901_docstring_describes_namespace( module_qname, class_name ): 

143 ''' Class docstring describes namespace. ''' 

144 module = cache_import_module( module_qname ) 

145 Object = getattr( module, class_name ) 

146 fragment = base.generate_docstring( 'description of namespace' ) 

147 assert fragment in Object.__doc__ 

148 

149 

150@pytest.mark.parametrize( 

151 'module_qname, class_name', 

152 product( THESE_MODULE_QNAMES, THESE_CLASSES_NAMES ) 

153) 

154def test_902_docstring_mentions_accretion( module_qname, class_name ): 

155 ''' Class docstring mentions accretion. ''' 

156 module = cache_import_module( module_qname ) 

157 Object = getattr( module, class_name ) 

158 fragment = base.generate_docstring( 'instance attributes accretion' ) 

159 assert fragment in Object.__doc__