upstream/ipython Files · IPython/core/tests/test_prompts.py

validate ESC_PAREN ('/') is followed by a callable name and not empty (#12690)...

validate ESC_PAREN ('/') is followed by a callable name and not empty (#12690) When running a single python expression with just a slash - `/`, a tuple is returned. ```python In [1]: / Out[1]: () ``` This weird case happens because when a line starts with `/` the `inputtransformer` transforms it into a call of the first word after the `/` as the callable name and rest tokens after as arguments. This PR fixes that issue by validating that at least a callable name is given and it's not empty, if not a `SyntaxError` will be raised. ```python In [1]: / File "<ipython-input-1-8f27084b6294>", line 1 / ^ SyntaxError: invalid syntax In [2]: ``` Validated that tests are passing.

Matthias Bussonnier - - Load All Authors

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      # -*- coding: utf-8

      """Tests for prompt generation."""

      import unittest

      from IPython.core.prompts import  LazyEvaluate

      class PromptTests(unittest.TestCase):

          def test_lazy_eval_unicode(self):

              u = u'ünicødé'

              lz = LazyEvaluate(lambda : u)

              self.assertEqual(str(lz), u)

              self.assertEqual(format(lz), u)

          def test_lazy_eval_nonascii_bytes(self):

              u = u'ünicødé'

              b = u.encode('utf8')

              lz = LazyEvaluate(lambda : b)

              # unicode(lz) would fail

              self.assertEqual(str(lz), str(b))

              self.assertEqual(format(lz), str(b))

          def test_lazy_eval_float(self):

              f = 0.503

              lz = LazyEvaluate(lambda : f)

              self.assertEqual(str(lz), str(f))

              self.assertEqual(format(lz), str(f))

              self.assertEqual(format(lz, '.1'), '0.5')

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				# -*- coding: utf-8
				"""Tests for prompt generation."""

				import unittest

				from IPython.core.prompts import LazyEvaluate

				class PromptTests(unittest.TestCase):
				def test_lazy_eval_unicode(self):
				u = u'ünicødé'
				lz = LazyEvaluate(lambda : u)
				self.assertEqual(str(lz), u)
				self.assertEqual(format(lz), u)

				def test_lazy_eval_nonascii_bytes(self):
				u = u'ünicødé'
				b = u.encode('utf8')
				lz = LazyEvaluate(lambda : b)
				# unicode(lz) would fail
				self.assertEqual(str(lz), str(b))
				self.assertEqual(format(lz), str(b))

				def test_lazy_eval_float(self):
				f = 0.503
				lz = LazyEvaluate(lambda : f)

				self.assertEqual(str(lz), str(f))
				self.assertEqual(format(lz), str(f))
				self.assertEqual(format(lz, '.1'), '0.5')