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# -*- coding: utf-8 -*-
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"""Tests for the inputsplitter module.
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"""
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#-----------------------------------------------------------------------------
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# Copyright (C) 2010 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#-----------------------------------------------------------------------------
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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# stdlib
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import unittest
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import sys
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# Third party
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import nose.tools as nt
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# Our own
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from IPython.core import inputsplitter as isp
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#-----------------------------------------------------------------------------
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# Semi-complete examples (also used as tests)
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#-----------------------------------------------------------------------------
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# Note: at the bottom, there's a slightly more complete version of this that
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# can be useful during development of code here.
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def mini_interactive_loop(raw_input):
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"""Minimal example of the logic of an interactive interpreter loop.
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This serves as an example, and it is used by the test system with a fake
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raw_input that simulates interactive input."""
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from IPython.core.inputsplitter import InputSplitter
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isp = InputSplitter()
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# In practice, this input loop would be wrapped in an outside loop to read
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# input indefinitely, until some exit/quit command was issued. Here we
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# only illustrate the basic inner loop.
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while isp.push_accepts_more():
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indent = ' '*isp.indent_spaces
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prompt = '>>> ' + indent
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line = indent + raw_input(prompt)
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isp.push(line)
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# Here we just return input so we can use it in a test suite, but a real
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# interpreter would instead send it for execution somewhere.
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src = isp.source_reset()
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#print 'Input source was:\n', src # dbg
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return src
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#-----------------------------------------------------------------------------
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# Test utilities, just for local use
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#-----------------------------------------------------------------------------
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def assemble(block):
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"""Assemble a block into multi-line sub-blocks."""
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return ['\n'.join(sub_block)+'\n' for sub_block in block]
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def pseudo_input(lines):
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"""Return a function that acts like raw_input but feeds the input list."""
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ilines = iter(lines)
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def raw_in(prompt):
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try:
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return next(ilines)
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except StopIteration:
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return ''
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return raw_in
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#-----------------------------------------------------------------------------
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# Tests
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#-----------------------------------------------------------------------------
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def test_spaces():
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tests = [('', 0),
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(' ', 1),
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('\n', 0),
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(' \n', 1),
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('x', 0),
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(' x', 1),
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(' x',2),
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(' x',4),
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# Note: tabs are counted as a single whitespace!
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('\tx', 1),
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('\t x', 2),
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]
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for s, nsp in tests:
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nt.assert_equal(isp.num_ini_spaces(s), nsp)
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def test_remove_comments():
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tests = [('text', 'text'),
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('text # comment', 'text '),
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('text # comment\n', 'text \n'),
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('text # comment \n', 'text \n'),
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('line # c \nline\n','line \nline\n'),
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('line # c \nline#c2 \nline\nline #c\n\n',
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'line \nline\nline\nline \n\n'),
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]
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for inp, out in tests:
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nt.assert_equal(isp.remove_comments(inp), out)
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def test_get_input_encoding():
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encoding = isp.get_input_encoding()
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nt.assert_true(isinstance(encoding, basestring))
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# simple-minded check that at least encoding a simple string works with the
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# encoding we got.
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nt.assert_equal('test'.encode(encoding), 'test')
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class NoInputEncodingTestCase(unittest.TestCase):
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def setUp(self):
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self.old_stdin = sys.stdin
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class X: pass
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fake_stdin = X()
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sys.stdin = fake_stdin
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def test(self):
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# Verify that if sys.stdin has no 'encoding' attribute we do the right
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# thing
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enc = isp.get_input_encoding()
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self.assertEqual(enc, 'ascii')
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def tearDown(self):
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sys.stdin = self.old_stdin
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class InputSplitterTestCase(unittest.TestCase):
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def setUp(self):
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self.isp = isp.InputSplitter()
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def test_reset(self):
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isp = self.isp
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isp.push('x=1')
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isp.reset()
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self.assertEqual(isp._buffer, [])
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self.assertEqual(isp.indent_spaces, 0)
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self.assertEqual(isp.source, '')
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self.assertEqual(isp.code, None)
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self.assertEqual(isp._is_complete, False)
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def test_source(self):
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self.isp._store('1')
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self.isp._store('2')
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self.assertEqual(self.isp.source, '1\n2\n')
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self.assertTrue(len(self.isp._buffer)>0)
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self.assertEqual(self.isp.source_reset(), '1\n2\n')
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self.assertEqual(self.isp._buffer, [])
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self.assertEqual(self.isp.source, '')
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def test_indent(self):
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isp = self.isp # shorthand
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isp.push('x=1')
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self.assertEqual(isp.indent_spaces, 0)
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isp.push('if 1:\n x=1')
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self.assertEqual(isp.indent_spaces, 4)
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isp.push('y=2\n')
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self.assertEqual(isp.indent_spaces, 0)
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isp.push('if 1:')
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self.assertEqual(isp.indent_spaces, 4)
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isp.push(' x=1')
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self.assertEqual(isp.indent_spaces, 4)
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# Blank lines shouldn't change the indent level
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isp.push(' '*2)
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self.assertEqual(isp.indent_spaces, 4)
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def test_indent2(self):
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isp = self.isp
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# When a multiline statement contains parens or multiline strings, we
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# shouldn't get confused.
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isp.push("if 1:")
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isp.push(" x = (1+\n 2)")
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self.assertEqual(isp.indent_spaces, 4)
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def test_dedent(self):
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isp = self.isp # shorthand
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isp.push('if 1:')
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self.assertEqual(isp.indent_spaces, 4)
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isp.push(' pass')
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self.assertEqual(isp.indent_spaces, 0)
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def test_push(self):
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isp = self.isp
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self.assertTrue(isp.push('x=1'))
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def test_push2(self):
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isp = self.isp
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self.assertFalse(isp.push('if 1:'))
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for line in [' x=1', '# a comment', ' y=2']:
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self.assertTrue(isp.push(line))
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def test_push3(self):
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"""Test input with leading whitespace"""
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isp = self.isp
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isp.push(' x=1')
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isp.push(' y=2')
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self.assertEqual(isp.source, 'if 1:\n x=1\n y=2\n')
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def test_replace_mode(self):
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isp = self.isp
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isp.input_mode = 'block'
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isp.push('x=1')
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self.assertEqual(isp.source, 'x=1\n')
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isp.push('x=2')
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self.assertEqual(isp.source, 'x=2\n')
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def test_push_accepts_more(self):
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isp = self.isp
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isp.push('x=1')
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self.assertFalse(isp.push_accepts_more())
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def test_push_accepts_more2(self):
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isp = self.isp
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isp.push('if 1:')
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self.assertTrue(isp.push_accepts_more())
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isp.push(' x=1')
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self.assertTrue(isp.push_accepts_more())
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isp.push('')
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self.assertFalse(isp.push_accepts_more())
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def test_push_accepts_more3(self):
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isp = self.isp
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isp.push("x = (2+\n3)")
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self.assertFalse(isp.push_accepts_more())
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def test_push_accepts_more4(self):
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isp = self.isp
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# When a multiline statement contains parens or multiline strings, we
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# shouldn't get confused.
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# FIXME: we should be able to better handle de-dents in statements like
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# multiline strings and multiline expressions (continued with \ or
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# parens). Right now we aren't handling the indentation tracking quite
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# correctly with this, though in practice it may not be too much of a
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# problem. We'll need to see.
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isp.push("if 1:")
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isp.push(" x = (2+")
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isp.push(" 3)")
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self.assertTrue(isp.push_accepts_more())
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isp.push(" y = 3")
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self.assertTrue(isp.push_accepts_more())
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isp.push('')
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self.assertFalse(isp.push_accepts_more())
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def test_syntax_error(self):
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isp = self.isp
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# Syntax errors immediately produce a 'ready' block, so the invalid
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# Python can be sent to the kernel for evaluation with possible ipython
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# special-syntax conversion.
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isp.push('run foo')
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self.assertFalse(isp.push_accepts_more())
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def check_split(self, block_lines, compile=True):
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blocks = assemble(block_lines)
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lines = ''.join(blocks)
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oblock = self.isp.split_blocks(lines)
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self.assertEqual(oblock, blocks)
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if compile:
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for block in blocks:
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self.isp._compile(block)
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def test_split(self):
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# All blocks of input we want to test in a list. The format for each
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# block is a list of lists, with each inner lists consisting of all the
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# lines (as single-lines) that should make up a sub-block.
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# Note: do NOT put here sub-blocks that don't compile, as the
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# check_split() routine makes a final verification pass to check that
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# each sub_block, as returned by split_blocks(), does compile
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# correctly.
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all_blocks = [ [['x=1']],
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[['x=1'],
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['y=2']],
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[['x=1',
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'# a comment'],
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['y=11']],
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[['if 1:',
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' x=1'],
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['y=3']],
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[['def f(x):',
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' return x'],
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['x=1']],
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[['def f(x):',
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' x+=1',
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' ',
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' return x'],
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['x=1']],
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[['def f(x):',
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' if x>0:',
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' y=1',
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' # a comment',
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' else:',
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' y=4',
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' ',
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' return y'],
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['x=1'],
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['if 1:',
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' y=11'] ],
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[['for i in range(10):'
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' x=i**2']],
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[['for i in range(10):'
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' x=i**2'],
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['z = 1']],
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]
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for block_lines in all_blocks:
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self.check_split(block_lines)
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def test_split_syntax_errors(self):
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# Block splitting with invalid syntax
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all_blocks = [ [['a syntax error']],
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[['x=1',
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'another syntax error']],
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[['for i in range(10):'
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' yet another error']],
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]
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for block_lines in all_blocks:
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self.check_split(block_lines, compile=False)
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class InteractiveLoopTestCase(unittest.TestCase):
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"""Tests for an interactive loop like a python shell.
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"""
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def check_ns(self, lines, ns):
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"""Validate that the given input lines produce the resulting namespace.
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Note: the input lines are given exactly as they would be typed in an
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auto-indenting environment, as mini_interactive_loop above already does
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auto-indenting and prepends spaces to the input.
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"""
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src = mini_interactive_loop(pseudo_input(lines))
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test_ns = {}
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exec src in test_ns
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# We can't check that the provided ns is identical to the test_ns,
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# because Python fills test_ns with extra keys (copyright, etc). But
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# we can check that the given dict is *contained* in test_ns
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for k,v in ns.items():
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self.assertEqual(test_ns[k], v)
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def test_simple(self):
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self.check_ns(['x=1'], dict(x=1))
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def test_simple2(self):
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self.check_ns(['if 1:', 'x=2'], dict(x=2))
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def test_xy(self):
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self.check_ns(['x=1; y=2'], dict(x=1, y=2))
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def test_abc(self):
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self.check_ns(['if 1:','a=1','b=2','c=3'], dict(a=1, b=2, c=3))
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def test_multi(self):
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self.check_ns(['x =(1+','1+','2)'], dict(x=4))
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def test_LineInfo():
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"""Simple test for LineInfo construction and str()"""
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linfo = isp.LineInfo(' %cd /home')
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nt.assert_equals(str(linfo), 'LineInfo [ |%|cd|/home]')
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def test_split_user_input():
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"""Unicode test - split_user_input already has good doctests"""
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line = u"Pérez Fernando"
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parts = isp.split_user_input(line)
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parts_expected = (u'', u'', u'', line)
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nt.assert_equal(parts, parts_expected)
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# Transformer tests
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def transform_checker(tests, func):
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"""Utility to loop over test inputs"""
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for inp, tr in tests:
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nt.assert_equals(func(inp), tr)
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# Data for all the syntax tests in the form of lists of pairs of
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# raw/transformed input. We store it here as a global dict so that we can use
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# it both within single-function tests and also to validate the behavior of the
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# larger objects
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syntax = \
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dict(assign_system =
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[('a =! ls', 'a = get_ipython().magic("sc -l = ls")'),
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('b = !ls', 'b = get_ipython().magic("sc -l = ls")'),
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('x=1', 'x=1'), # normal input is unmodified
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(' ',' '), # blank lines are kept intact
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],
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assign_magic =
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[('a =% who', 'a = get_ipython().magic("who")'),
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('b = %who', 'b = get_ipython().magic("who")'),
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('x=1', 'x=1'), # normal input is unmodified
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(' ',' '), # blank lines are kept intact
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],
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classic_prompt =
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[('>>> x=1', 'x=1'),
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('x=1', 'x=1'), # normal input is unmodified
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(' ', ' '), # blank lines are kept intact
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('... ', ''), # continuation prompts
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],
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ipy_prompt =
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[('In [1]: x=1', 'x=1'),
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('x=1', 'x=1'), # normal input is unmodified
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(' ',' '), # blank lines are kept intact
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(' ....: ', ''), # continuation prompts
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],
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# Tests for the escape transformer to leave normal code alone
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escaped_noesc =
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[ (' ', ' '),
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('x=1', 'x=1'),
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],
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# System calls
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escaped_shell =
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[ ('!ls', 'get_ipython().system("ls")'),
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# Double-escape shell, this means to capture the output of the
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# subprocess and return it
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('!!ls', 'get_ipython().getoutput("ls")'),
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],
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# Help/object info
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escaped_help =
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[ ('?', 'get_ipython().show_usage()'),
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('?x1', 'get_ipython().magic("pinfo x1")'),
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('??x2', 'get_ipython().magic("pinfo2 x2")'),
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|
|
('x3?', 'get_ipython().magic("pinfo x3")'),
|
|
|
('x4??', 'get_ipython().magic("pinfo2 x4")'),
|
|
|
('%hist?', 'get_ipython().magic("pinfo %hist")'),
|
|
|
],
|
|
|
|
|
|
# Explicit magic calls
|
|
|
escaped_magic =
|
|
|
[ ('%cd', 'get_ipython().magic("cd")'),
|
|
|
('%cd /home', 'get_ipython().magic("cd /home")'),
|
|
|
(' %magic', ' get_ipython().magic("magic")'),
|
|
|
],
|
|
|
|
|
|
# Quoting with separate arguments
|
|
|
escaped_quote =
|
|
|
[ (',f', 'f("")'),
|
|
|
(',f x', 'f("x")'),
|
|
|
(' ,f y', ' f("y")'),
|
|
|
(',f a b', 'f("a", "b")'),
|
|
|
],
|
|
|
|
|
|
# Quoting with single argument
|
|
|
escaped_quote2 =
|
|
|
[ (';f', 'f("")'),
|
|
|
(';f x', 'f("x")'),
|
|
|
(' ;f y', ' f("y")'),
|
|
|
(';f a b', 'f("a b")'),
|
|
|
],
|
|
|
|
|
|
# Simply apply parens
|
|
|
escaped_paren =
|
|
|
[ ('/f', 'f()'),
|
|
|
('/f x', 'f(x)'),
|
|
|
(' /f y', ' f(y)'),
|
|
|
('/f a b', 'f(a, b)'),
|
|
|
],
|
|
|
|
|
|
)
|
|
|
|
|
|
# multiline syntax examples. Each of these should be a list of lists, with
|
|
|
# each entry itself having pairs of raw/transformed input. The union (with
|
|
|
# '\n'.join() of the transformed inputs is what the splitter should produce
|
|
|
# when fed the raw lines one at a time via push.
|
|
|
syntax_ml = \
|
|
|
dict(classic_prompt =
|
|
|
[ [('>>> for i in range(10):','for i in range(10):'),
|
|
|
('... print i',' print i'),
|
|
|
('... ', ''),
|
|
|
],
|
|
|
],
|
|
|
|
|
|
ipy_prompt =
|
|
|
[ [('In [24]: for i in range(10):','for i in range(10):'),
|
|
|
(' ....: print i',' print i'),
|
|
|
(' ....: ', ''),
|
|
|
],
|
|
|
],
|
|
|
)
|
|
|
|
|
|
|
|
|
def test_assign_system():
|
|
|
transform_checker(syntax['assign_system'], isp.transform_assign_system)
|
|
|
|
|
|
|
|
|
def test_assign_magic():
|
|
|
transform_checker(syntax['assign_magic'], isp.transform_assign_magic)
|
|
|
|
|
|
|
|
|
def test_classic_prompt():
|
|
|
transform_checker(syntax['classic_prompt'], isp.transform_classic_prompt)
|
|
|
for example in syntax_ml['classic_prompt']:
|
|
|
transform_checker(example, isp.transform_classic_prompt)
|
|
|
|
|
|
|
|
|
def test_ipy_prompt():
|
|
|
transform_checker(syntax['ipy_prompt'], isp.transform_ipy_prompt)
|
|
|
for example in syntax_ml['ipy_prompt']:
|
|
|
transform_checker(example, isp.transform_ipy_prompt)
|
|
|
|
|
|
|
|
|
def test_escaped_noesc():
|
|
|
transform_checker(syntax['escaped_noesc'], isp.transform_escaped)
|
|
|
|
|
|
|
|
|
def test_escaped_shell():
|
|
|
transform_checker(syntax['escaped_shell'], isp.transform_escaped)
|
|
|
|
|
|
|
|
|
def test_escaped_help():
|
|
|
transform_checker(syntax['escaped_help'], isp.transform_escaped)
|
|
|
|
|
|
|
|
|
def test_escaped_magic():
|
|
|
transform_checker(syntax['escaped_magic'], isp.transform_escaped)
|
|
|
|
|
|
|
|
|
def test_escaped_quote():
|
|
|
transform_checker(syntax['escaped_quote'], isp.transform_escaped)
|
|
|
|
|
|
|
|
|
def test_escaped_quote2():
|
|
|
transform_checker(syntax['escaped_quote2'], isp.transform_escaped)
|
|
|
|
|
|
|
|
|
def test_escaped_paren():
|
|
|
transform_checker(syntax['escaped_paren'], isp.transform_escaped)
|
|
|
|
|
|
|
|
|
class IPythonInputTestCase(InputSplitterTestCase):
|
|
|
"""By just creating a new class whose .isp is a different instance, we
|
|
|
re-run the same test battery on the new input splitter.
|
|
|
|
|
|
In addition, this runs the tests over the syntax and syntax_ml dicts that
|
|
|
were tested by individual functions, as part of the OO interface.
|
|
|
"""
|
|
|
|
|
|
def setUp(self):
|
|
|
self.isp = isp.IPythonInputSplitter(input_mode='line')
|
|
|
|
|
|
def test_syntax(self):
|
|
|
"""Call all single-line syntax tests from the main object"""
|
|
|
isp = self.isp
|
|
|
for example in syntax.itervalues():
|
|
|
for raw, out_t in example:
|
|
|
if raw.startswith(' '):
|
|
|
continue
|
|
|
|
|
|
isp.push(raw)
|
|
|
out = isp.source_reset().rstrip()
|
|
|
self.assertEqual(out, out_t)
|
|
|
|
|
|
def test_syntax_multiline(self):
|
|
|
isp = self.isp
|
|
|
for example in syntax_ml.itervalues():
|
|
|
out_t_parts = []
|
|
|
for line_pairs in example:
|
|
|
for raw, out_t_part in line_pairs:
|
|
|
isp.push(raw)
|
|
|
out_t_parts.append(out_t_part)
|
|
|
|
|
|
out = isp.source_reset().rstrip()
|
|
|
out_t = '\n'.join(out_t_parts).rstrip()
|
|
|
self.assertEqual(out, out_t)
|
|
|
|
|
|
|
|
|
class BlockIPythonInputTestCase(IPythonInputTestCase):
|
|
|
|
|
|
# Deactivate tests that don't make sense for the block mode
|
|
|
test_push3 = test_split = lambda s: None
|
|
|
|
|
|
def setUp(self):
|
|
|
self.isp = isp.IPythonInputSplitter(input_mode='block')
|
|
|
|
|
|
def test_syntax_multiline(self):
|
|
|
isp = self.isp
|
|
|
for example in syntax_ml.itervalues():
|
|
|
raw_parts = []
|
|
|
out_t_parts = []
|
|
|
for line_pairs in example:
|
|
|
for raw, out_t_part in line_pairs:
|
|
|
raw_parts.append(raw)
|
|
|
out_t_parts.append(out_t_part)
|
|
|
|
|
|
raw = '\n'.join(raw_parts)
|
|
|
out_t = '\n'.join(out_t_parts)
|
|
|
|
|
|
isp.push(raw)
|
|
|
out = isp.source_reset()
|
|
|
# Match ignoring trailing whitespace
|
|
|
self.assertEqual(out.rstrip(), out_t.rstrip())
|
|
|
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Main - use as a script, mostly for developer experiments
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
if __name__ == '__main__':
|
|
|
# A simple demo for interactive experimentation. This code will not get
|
|
|
# picked up by any test suite.
|
|
|
from IPython.core.inputsplitter import InputSplitter, IPythonInputSplitter
|
|
|
|
|
|
# configure here the syntax to use, prompt and whether to autoindent
|
|
|
#isp, start_prompt = InputSplitter(), '>>> '
|
|
|
isp, start_prompt = IPythonInputSplitter(), 'In> '
|
|
|
|
|
|
autoindent = True
|
|
|
#autoindent = False
|
|
|
|
|
|
try:
|
|
|
while True:
|
|
|
prompt = start_prompt
|
|
|
while isp.push_accepts_more():
|
|
|
indent = ' '*isp.indent_spaces
|
|
|
if autoindent:
|
|
|
line = indent + raw_input(prompt+indent)
|
|
|
else:
|
|
|
line = raw_input(prompt)
|
|
|
isp.push(line)
|
|
|
prompt = '... '
|
|
|
|
|
|
# Here we just return input so we can use it in a test suite, but a
|
|
|
# real interpreter would instead send it for execution somewhere.
|
|
|
#src = isp.source; raise EOFError # dbg
|
|
|
src = isp.source_reset()
|
|
|
print 'Input source was:\n', src
|
|
|
except EOFError:
|
|
|
print 'Bye'
|
|
|
|
