"""

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

# bsie imports
from bsie.utils import errors

# objects to test
from bsie.reader import ReaderBuilder


## code ##

class TestReaderBuilder(unittest.TestCase):
    def test_build(self):
        builder = ReaderBuilder({'bsie.reader.path.Path': {}})
        # build configured reader
        cls = builder.build('bsie.reader.path.Path')
        import bsie.reader.path
        self.assertIsInstance(cls, bsie.reader.path.Path)
        # build unconfigured reader
        cls = builder.build('bsie.reader.stat.Stat')
        import bsie.reader.stat
        self.assertIsInstance(cls, bsie.reader.stat.Stat)
        # re-build previous reader (test cache)
        self.assertEqual(cls, builder.build('bsie.reader.stat.Stat'))
        # test invalid
        self.assertRaises(TypeError, builder.build, 123)
        self.assertRaises(TypeError, builder.build, None)
        self.assertRaises(ValueError, builder.build, '')
        self.assertRaises(ValueError, builder.build, 'Path')
        self.assertRaises(errors.BuilderError, builder.build, 'path.Path')
        # invalid config
        builder = ReaderBuilder({'bsie.reader.stat.Stat': dict(foo=123)})
        self.assertRaises(errors.BuilderError, builder.build, 'bsie.reader.stat.Stat')
        builder = ReaderBuilder({'bsie.reader.stat.Stat': 123})
        self.assertRaises(TypeError, builder.build, 'bsie.reader.stat.Stat')
        # no instructions
        builder = ReaderBuilder({})
        cls = builder.build('bsie.reader.stat.Stat')
        self.assertIsInstance(cls, bsie.reader.stat.Stat)


## main ##

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

## EOF ##