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"""
Test all things related to the ``jedi.api`` module.
"""
from textwrap import dedent
from jedi import api
from jedi._compatibility import is_py3
from pytest import raises
from jedi.parser import utils
def test_preload_modules():
def check_loaded(*modules):
# +1 for None module (currently used)
assert len(parser_cache) == len(modules) + 1
for i in modules:
assert [i in k for k in parser_cache.keys() if k is not None]
temp_cache, utils.parser_cache = utils.parser_cache, {}
parser_cache = utils.parser_cache
api.preload_module('sys')
check_loaded() # compiled (c_builtin) modules shouldn't be in the cache.
api.preload_module('json', 'token')
check_loaded('json', 'token')
utils.parser_cache = temp_cache
def test_empty_script():
assert api.Script('')
def test_line_number_errors():
"""
Script should raise a ValueError if line/column numbers are not in a
valid range.
"""
s = 'hello'
# lines
with raises(ValueError):
api.Script(s, 2, 0)
with raises(ValueError):
api.Script(s, 0, 0)
# columns
with raises(ValueError):
api.Script(s, 1, len(s) + 1)
with raises(ValueError):
api.Script(s, 1, -1)
# ok
api.Script(s, 1, 0)
api.Script(s, 1, len(s))
def _check_number(source, result='float'):
completions = api.Script(source).completions()
assert completions[0].parent().name == result
def test_completion_on_number_literals():
# No completions on an int literal (is a float).
assert [c.name for c in api.Script('1.').completions()] \
== ['and', 'if', 'in', 'is', 'not', 'or']
# Multiple points after an int literal basically mean that there's a float
# and a call after that.
_check_number('1..')
_check_number('1.0.')
# power notation
_check_number('1.e14.')
_check_number('1.e-3.')
_check_number('9e3.')
assert api.Script('1.e3..').completions() == []
assert api.Script('1.e-13..').completions() == []
def test_completion_on_hex_literals():
assert api.Script('0x1..').completions() == []
_check_number('0x1.', 'int') # hexdecimal
# Completing binary literals doesn't work if they are not actually binary
# (invalid statements).
assert api.Script('0b2.b').completions() == []
_check_number('0b1.', 'int') # binary
_check_number('0x2e.', 'int')
_check_number('0xE7.', 'int')
_check_number('0xEa.', 'int')
# theoretically, but people can just check for syntax errors:
#assert api.Script('0x.').completions() == []
def test_completion_on_complex_literals():
assert api.Script('1j..').completions() == []
_check_number('1j.', 'complex')
_check_number('44.j.', 'complex')
_check_number('4.0j.', 'complex')
# No dot no completion - I thought, but 4j is actually a literall after
# which a keyword like or is allowed. Good times, haha!
assert (set([c.name for c in api.Script('4j').completions()]) ==
set(['if', 'and', 'in', 'is', 'not', 'or']))
def test_goto_assignments_on_non_name():
assert api.Script('for').goto_assignments() == []
assert api.Script('assert').goto_assignments() == []
if is_py3:
assert api.Script('True').goto_assignments() == []
else:
# In Python 2.7 True is still a name.
assert api.Script('True').goto_assignments()[0].description == 'class bool'
def test_goto_definitions_on_non_name():
assert api.Script('import x', column=0).goto_definitions() == []
def test_goto_definition_not_multiple():
"""
There should be only one Definition result if it leads back to the same
origin (e.g. instance method)
"""
s = dedent('''\
import random
class A():
def __init__(self, a):
self.a = 3
def foo(self):
pass
if random.randint(0, 1):
a = A(2)
else:
a = A(1)
a''')
assert len(api.Script(s).goto_definitions()) == 1
def test_usage_description():
descs = [u.description for u in api.Script("foo = ''; foo").usages()]
assert set(descs) == set(["foo = ''", 'foo'])
def test_get_line_code():
def get_line_code(source, line=None, **kwargs):
return api.Script(source, line=line).completions()[0].get_line_code(**kwargs)
# On builtin
assert get_line_code('') == ''
# On custom code
line = ' foo'
assert get_line_code('def foo():\n%s' % line) == line
# With before/after
line = ' foo'
source = 'def foo():\n%s\nother_line' % line
assert get_line_code(source, line=2) == line
assert get_line_code(source, line=2, after=1) == line + '\nother_line'
assert get_line_code(source, line=2, after=1, before=1) == source
def test_goto_assignments_follow_imports():
code = dedent("""
import inspect
inspect.isfunction""")
definition, = api.Script(code, column=0).goto_assignments(follow_imports=True)
assert 'inspect.py' in definition.module_path
assert definition.start_pos == (1, 0)
definition, = api.Script(code).goto_assignments(follow_imports=True)
assert 'inspect.py' in definition.module_path
assert definition.start_pos > (1, 0)
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