interpolation_test.py 1.7 KB

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  1. from __future__ import absolute_import
  2. from __future__ import unicode_literals
  3. import unittest
  4. from compose.config.interpolation import BlankDefaultDict as bddict
  5. from compose.config.interpolation import interpolate
  6. from compose.config.interpolation import InvalidInterpolation
  7. class InterpolationTest(unittest.TestCase):
  8. def test_valid_interpolations(self):
  9. self.assertEqual(interpolate('$foo', bddict(foo='hi')), 'hi')
  10. self.assertEqual(interpolate('${foo}', bddict(foo='hi')), 'hi')
  11. self.assertEqual(interpolate('${subject} love you', bddict(subject='i')), 'i love you')
  12. self.assertEqual(interpolate('i ${verb} you', bddict(verb='love')), 'i love you')
  13. self.assertEqual(interpolate('i love ${object}', bddict(object='you')), 'i love you')
  14. def test_empty_value(self):
  15. self.assertEqual(interpolate('${foo}', bddict(foo='')), '')
  16. def test_unset_value(self):
  17. self.assertEqual(interpolate('${foo}', bddict()), '')
  18. def test_escaped_interpolation(self):
  19. self.assertEqual(interpolate('$${foo}', bddict(foo='hi')), '${foo}')
  20. def test_invalid_strings(self):
  21. self.assertRaises(InvalidInterpolation, lambda: interpolate('${', bddict()))
  22. self.assertRaises(InvalidInterpolation, lambda: interpolate('$}', bddict()))
  23. self.assertRaises(InvalidInterpolation, lambda: interpolate('${}', bddict()))
  24. self.assertRaises(InvalidInterpolation, lambda: interpolate('${ }', bddict()))
  25. self.assertRaises(InvalidInterpolation, lambda: interpolate('${ foo}', bddict()))
  26. self.assertRaises(InvalidInterpolation, lambda: interpolate('${foo }', bddict()))
  27. self.assertRaises(InvalidInterpolation, lambda: interpolate('${foo!}', bddict()))