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"""

Part of the tagit test suite.
A copy of the license is provided with the project.
Author: Matthias Baumgartner, 2022
"""
# standard imports
import unittest

# tagit imports
from tagit.config import types
from tagit.utils import errors

# objects to test
from tagit.config.schema import ConfigSchema, ConfigKey, ConfigTitle, IncompatibleTypes


## code ##

def _config_title_check(self, key0, key1):
    self.assertEqual(key0, key1)
    self.assertEqual(key0._title, key1._title)
    self.assertEqual(key0._description, key1._description)
    self.assertSetEqual(key0._modules, key1._modules)

def _config_key_check(self, key0, key1):
    self.assertEqual(key0, key1)
    self.assertEqual(key0._title, key1._title)
    self.assertEqual(key0._description, key1._description)
    self.assertSetEqual(key0._modules, key1._modules)
    self.assertSetEqual(key0._examples, key1._examples)

class TestConfigSchema(unittest.TestCase):
    def test_collection(self):
        # getitem, call
        # contains
        # iter
        # len
        # keys
        pass

    def test_title(self):
        schema = ConfigSchema()
        # recognize title
        schema.declare_title(('some', 'key'), 'module', 'title', 'description')
        schema.declare(('other', 'key'), types.Int(), 0,
            'module', 'title', 'description', 'example')
        self.assertTrue(schema.is_title(('some', 'key')))
        self.assertFalse(schema.is_title(('other', 'key')))
        _config_title_check(self, schema.get_title(('some', 'key')),
            ConfigTitle(('some', 'key'), 'title', 'module', 'description'))
        self.assertRaises(KeyError, schema.get_title, ('other', 'key'))
        # config takes precedence
        schema.declare(('some', 'key'), types.Int(), 0,
            'module', 'title', 'description', 'example')
        self.assertFalse(schema.is_title(('some', 'key')))
        # can still retrieve the title
        _config_title_check(self, schema.get_title(('some', 'key')),
            ConfigTitle(('some', 'key'), 'title', 'module', 'description'))

    def test_declare(self):
        schema = ConfigSchema()
        # keys can be declared
        schema.declare(('some', 'key'), types.Int(), 0,
            'module', 'title', 'description', 'example')
        self.assertSetEqual(set(schema.config.keys()), {('some', 'key')})
        _config_key_check(self, schema.config[('some', 'key')],
            ConfigKey(('some', 'key'), types.Int(), 0,
            'module', 'title', 'description', 'example'))
        # double insert with identical signature is accepted
        schema.declare(('some', 'key'), types.Int(), 0,
            'module', 'title', 'description', 'example')
        self.assertSetEqual(set(schema.config.keys()), {('some', 'key')})
        _config_key_check(self, schema.config[('some', 'key')],
            ConfigKey(('some', 'key'), types.Int(), 0,
            'module', 'title', 'description', 'example'))
        # additional info is accepted
        schema.declare(('some', 'key'), types.Int(), 0,
            'other_module', 'other_title', 'other_description', 'other_example')
        self.assertSetEqual(set(schema.config.keys()), {('some', 'key')})
        ck = ConfigKey(('some', 'key'), types.Int(), 0,
                'module', 'other_title', 'other_description', 'example')
        ck._examples.add('other_example')
        ck._modules.add('other_module')
        _config_key_check(self, schema.config[('some', 'key')], ck)

        # empty key is rejected
        self.assertRaises(errors.ProgrammingError, schema.declare, [], types.Int(), 0)
        # empty type is rejected
        self.assertRaises(AttributeError, schema.declare, ('foo', ), None, None)
        # invalid defaults are rejected
        self.assertRaises(errors.ProgrammingError, schema.declare, ('foo', ), types.Unsigned(), -1)
        self.assertRaises(errors.ProgrammingError, schema.declare, ('foo', ), types.Int(), 'abc')
        self.assertRaises(errors.ProgrammingError, schema.declare, ('foo', ), types.String(), 123)
        self.assertRaises(errors.ProgrammingError, schema.declare, ('foo', ), types.Enum('foo'), 'bar')
        # double insert with different signature is rejected
        self.assertRaises(IncompatibleTypes, schema.declare, ('some', 'key'), types.Unsigned(), 0)
        self.assertRaises(IncompatibleTypes, schema.declare, ('some', 'key'), types.Int(), 2)

    def test_declare_title(self):
        schema = ConfigSchema()
        # titles can be declared
        schema.declare_title(('some', 'key'), 'module', 'title', 'description')
        self.assertSetEqual(set(schema.titles.keys()), {('some', 'key')})
        _config_title_check(self, schema.titles[('some', 'key')],
            ConfigTitle(('some', 'key'),
            'title', 'module', 'description'))
        # double insert is accepted
        schema.declare_title(('some', 'key'), 'module', 'title', 'description')
        self.assertSetEqual(set(schema.titles.keys()), {('some', 'key')})
        _config_title_check(self, schema.titles[('some', 'key')], ConfigTitle(('some', 'key'),
            'title', 'module', 'description'))
        # additional info is accepted
        schema.declare_title(('some', 'key'), 'other_module', 'other_title', 'other_description')
        self.assertSetEqual(set(schema.titles.keys()), {('some', 'key')})
        ck = ConfigTitle(('some', 'key'), 'other_title', 'module', 'other_description')
        ck._modules.add('other_module')
        _config_title_check(self, schema.titles[('some', 'key')], ck)
        # empty key is rejected
        self.assertRaises(errors.ProgrammingError, schema.declare_title, [], types.Int(), 0)
        # title and config key can exist in parallel
        schema.declare(('other', 'key'), types.Int(), 0)
        self.assertSetEqual(set(schema.config.keys()), {('other', 'key')})
        _config_key_check(self, schema.config[('other', 'key')],
            ConfigKey(('other', 'key'), types.Int(), 0))
        schema.declare_title(('other', 'key'), 'module', 'title', 'description')
        self.assertIn(('other', 'key'), set(schema.titles.keys()))
        _config_title_check(self, schema.titles[('other', 'key')], ConfigTitle(('other', 'key'),
            'title', 'module', 'description'))


class TestConfigTitle(unittest.TestCase):
    def test_magicks(self):
        ck = ConfigTitle(('some', 'key'), 'title', 'module', 'description')
        # representation
        self.assertEqual(repr(ck), "ConfigTitle(('some', 'key'), title)")
        # comparison
        self.assertEqual(ck, ConfigTitle(('some', 'key')))
        self.assertEqual(hash(ck), hash(ConfigTitle(('some', 'key'))))
        self.assertNotEqual(ck, ConfigTitle(('other', 'key')))

    def test_properties(self):
        ck = ConfigTitle(('some', 'key'), 'title', 'module', 'some_description')
        # key can't be overwritten
        self.assertRaises(AttributeError, ck.__setattr__, 'key', ('other', 'key'))
        # modules
        ck.modules = 'other_module'
        self.assertSetEqual(ck.modules, {'module', 'other_module'})
        ck.modules = None
        self.assertSetEqual(ck.modules, {'module', 'other_module'})
        ck.modules = ''
        self.assertSetEqual(ck.modules, {'module', 'other_module'})
        # title
        ck.title = 'other_title'
        self.assertEqual(ck.title, 'other_title')
        ck.title = None
        self.assertEqual(ck.title, 'other_title')
        ck.title = ''
        self.assertEqual(ck.title, 'other_title')
        # description
        ck.description = 'other_description'
        self.assertEqual(ck.description, 'other_description')
        ck.description = None
        self.assertEqual(ck.description, 'other_description')
        ck.description = ''
        self.assertEqual(ck.description, 'other_description')

    def test_tree(self):
        self.assertEqual(ConfigTitle(('some', 'path', 'to', 'a', 'key')).branch,
            ('some', 'path', 'to', 'a'))
        self.assertEqual(ConfigTitle(('some', 'path', 'to', 'a', 'key')).leaf,
            'key')
        self.assertEqual(ConfigTitle(('somekey', )).branch,
            tuple())
        self.assertEqual(ConfigTitle(('somekey', )).leaf,
            'somekey')


class TestConfigKey(unittest.TestCase):
    def test_magicks(self):
        ck = ConfigKey(('some', 'key'), types.Int(), 0,
                'module', 'title', 'some_description', 'some_example')
        ck.example = 'other_example'
        ck.modules = 'other_module'
        # representation
        self.assertEqual(repr(ck), "ConfigKey(('some', 'key'), Int, 0)")
        # comparison
        self.assertEqual(ck, ConfigKey(('some', 'key'), types.Int(), 0))
        self.assertEqual(hash(ck), hash(ConfigKey(('some', 'key'), types.Int(), 0)))
        self.assertNotEqual(ck, ConfigKey(('some', 'key'), types.Int(), 1))
        self.assertNotEqual(ck, ConfigKey(('some', 'key'), types.Unsigned(), 0))
        self.assertNotEqual(ck, ConfigKey(('other', 'key'), types.Int(), 0))

    def test_properties(self):
        ck = ConfigKey(('some', 'key'), types.Int(), 0,
                'module', 'title', 'some_description', 'some_example')
        self.assertEqual(ck.key, ('some', 'key'))
        self.assertEqual(ck.type, types.Int())
        self.assertEqual(ck.default, 0)
        self.assertSetEqual(ck.modules, {'module'})
        self.assertEqual(ck.title, 'title')
        self.assertEqual(ck.description, 'some_description')
        self.assertEqual(ck.example, 'some_example')

        # key, type, default can't be overwritten
        self.assertRaises(AttributeError, ck.__setattr__, 'key', ('other', 'key'))
        self.assertRaises(AttributeError, ck.__setattr__, 'type', types.Unsigned())
        self.assertRaises(AttributeError, ck.__setattr__, 'default', 123)
        # modules
        ck.modules = 'other_module'
        self.assertSetEqual(ck.modules, {'module', 'other_module'})
        ck.modules = None
        self.assertSetEqual(ck.modules, {'module', 'other_module'})
        ck.modules = ''
        self.assertSetEqual(ck.modules, {'module', 'other_module'})
        # title
        ck.title = 'other_title'
        self.assertEqual(ck.title, 'other_title')
        ck.title = None
        self.assertEqual(ck.title, 'other_title')
        ck.title = ''
        self.assertEqual(ck.title, 'other_title')
        # description
        ck.description = 'other_description'
        self.assertEqual(ck.description, 'other_description')
        ck.description = None
        self.assertEqual(ck.description, 'other_description')
        ck.description = ''
        self.assertEqual(ck.description, 'other_description')
        # example
        ck.example = 'other_example'
        ex = ck.example
        self.assertTrue('other_example' in ex)
        self.assertTrue('some_example' in ex)
        ck.example = None
        self.assertEqual(ck.example, ex)
        ck.example = ''
        self.assertEqual(ck.example, ex)
        # type example if unspecified
        self.assertEqual(ConfigKey(('some', 'key'), types.Int(), 0).example, types.Int().example)

    def test_checks(self):
        # check
        self.assertTrue(ConfigKey(('some', 'key'), types.Int(), 0).check(0))
        self.assertFalse(ConfigKey(('some', 'key'), types.Int(), 0).check(1.23))
        self.assertFalse(ConfigKey(('some', 'key'), types.Int(), 0).check('foobar'))
        self.assertTrue(ConfigKey(('some', 'key'), types.Unsigned(), 0).check(0))
        self.assertFalse(ConfigKey(('some', 'key'), types.Unsigned(), 0).check(-1))
        self.assertTrue(ConfigKey(('some', 'key'), types.String(), 0).check('foobar'))
        self.assertFalse(ConfigKey(('some', 'key'), types.String(), 0).check(['foo', 'bar']))

        # backtrack
        self.assertTrue(ConfigKey(['somekey'], types.Int(), 0).backtrack(0))
        self.assertTrue(ConfigKey(['somekey'], types.Int(), 0).backtrack(-1))
        self.assertTrue(ConfigKey(['somekey'], types.Int(), 0).backtrack(123))
        self.assertRaises(types.ConfigTypeError,
            ConfigKey(['somekey'], types.Int(), 0).backtrack, 1.23)
        self.assertRaises(types.ConfigTypeError,
            ConfigKey(['somekey'], types.Int(), 0).backtrack, 'foobar')
        self.assertTrue(ConfigKey(['somekey'], types.Unsigned(), 0).backtrack(0))
        self.assertRaises(types.ConfigTypeError,
            ConfigKey(['somekey'], types.Unsigned(), 0).backtrack, -1)
        self.assertTrue(ConfigKey(['somekey'], types.String(), 0).backtrack('foobar'))
        self.assertRaises(types.ConfigTypeError,
            ConfigKey(['somekey'], types.String(), 0).backtrack, ['foo', 'bar'])

    def test_tree(self):
        self.assertEqual(ConfigKey(('some', 'path', 'to', 'a', 'key'), types.Int(), 0).branch,
            ('some', 'path', 'to', 'a'))
        self.assertEqual(ConfigKey(('some', 'path', 'to', 'a', 'key'), types.Int(), 0).leaf,
            'key')
        self.assertEqual(ConfigKey(('somekey', ), types.Int(), 0).branch,
            tuple())
        self.assertEqual(ConfigKey(('somekey', ), types.Int(), 0).leaf,
            'somekey')



## main ##

if __name__ == '__main__':
    unittest.main()

## EOF ##