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"""Tests for tokenutil"""
# Copyright (c) IPython Development Team.
# Distributed under the terms of the Modified BSD License.
import pytest
import textwrap
from IPython.utils.tokenutil import token_at_cursor, line_at_cursor
def expect_token(expected: str, cell: str, cursor_pos: int | None = None) -> None:
"""
If cursor_pos is `None`, look for `|` as the cursor position.
Assert that the token at the cursor position is `expected`.
"""
if cursor_pos is None:
assert (
cursor_count := cell.count("|")
) == 1, (
f"Cursor position not specified and found {cursor_count} instance(s) of '|'"
)
cursor_pos = cell.index("|")
cell = cell.replace("|", "")
token = token_at_cursor(cell, cursor_pos)
offset = 0
for line in cell.splitlines():
if offset + len(line) >= cursor_pos:
break
else:
offset += len(line) + 1
column = cursor_pos - offset
line_with_cursor = "%s|%s" % (line[:column], line[column:])
assert token == expected, "Expected %r, got %r in: %r (pos %i)" % (
expected,
token,
line_with_cursor,
cursor_pos,
)
def test_simple():
cell = "foo"
for i in range(len(cell)):
expect_token("foo", cell, i)
def test_function():
cell = "foo(a=5, b='10')"
for i in range(len(cell)):
expect_token("foo", cell, i)
expect_token("a", "foo(|a, b)")
expect_token("foo", "foo(a|, b)")
expect_token("foo", "foo(a,| b)")
expect_token("b", "foo(a, |b)")
expect_token("foo", "foo(a, b|)")
@pytest.mark.parametrize(
"cell",
[
"\n".join(["a = 5", "b = hello('string', there)"]),
textwrap.dedent(
'''
"""\n\nxxxxxxxxxx\n\n"""
5, """
"""\n\nxxxxxxxxxx\n\n"""
docstring
multiline token
""", [
2, 3, "complicated"]
b = hello("string", there)
'''
),
],
)
def test_multiline(cell):
expected = "hello"
start = cell.index(expected) + 1
for i in range(start, start + len(expected)):
expect_token(expected, cell, i)
start = cell.index(expected) + 1
for i in range(start, start + len(expected)):
expect_token(expected, cell, i)
def test_nested_call_kwargs():
cell = "foo(bar(a=5), b=10)"
start = cell.index("bar")
last = start + len("bar")
for i in range(start, last + 1):
expect_token("bar", cell, i)
start = cell.index("a=")
for i in range(start, start + 3):
expect_token("bar", cell, i)
expect_token("bar", "foo(bar(a=|5), b=10)")
expect_token("bar", "foo(bar(a=5|), b=10)")
for i in range(cell.index(")") + 1, cell.index("b=") + 2):
expect_token("foo", cell, i)
expect_token("foo", cell, len(cell) - 1)
def test_nested_call_args():
expect_token("bar", "foo(bar(x,| ))")
expect_token("bar", "foo(bar(x, |))")
expect_token("bar", "foo(ba|r(x, y))")
expect_token("x", "foo(bar(|x, y))")
expect_token("bar", "foo(bar(x|, y))")
expect_token("bar", "foo(bar(x,| y))")
expect_token("y", "foo(bar(x, |y))")
expect_token("bar", "foo(bar(x, y|))")
expect_token("foo", "foo(bar(x, y)|)")
expect_token("foo", "foo(bar(, y)|)")
def test_outer_name():
expect_token("x", "|x + foo(a, b) + y + z")
expect_token("x", "x| + foo(a, b) + y + z")
expect_token("x", "x |+ foo(a, b) + y + z")
expect_token("x", "x +| foo(a, b) + y + z")
expect_token("foo", "x + |foo(a, b) + y + z")
expect_token("a", "x + foo(|a, b) + y + z")
expect_token("foo", "x + foo(a|, b) + y + z")
expect_token("foo", "x + foo(a, b)| + y + z")
expect_token("foo", "x + foo(a, b) |+ y + z")
expect_token("foo", "x + foo(a, b) +| y + z")
expect_token("y", "x + foo(a, b) + |y + z")
expect_token("y", "x + foo(a, b) + y| + z")
expect_token("y", "x + foo(a, b) + y |+ z")
expect_token("y", "x + foo(a, b) + y +| z")
expect_token("z", "x + foo(a, b) + y + |z")
def test_attrs():
cell = "a = obj.attr.subattr"
expected = "obj"
idx = cell.find("obj") + 1
for i in range(idx, idx + 3):
expect_token(expected, cell, i)
idx = cell.find(".attr") + 2
expected = "obj.attr"
for i in range(idx, idx + 4):
expect_token(expected, cell, i)
idx = cell.find(".subattr") + 2
expected = "obj.attr.subattr"
for i in range(idx, len(cell)):
expect_token(expected, cell, i)
def test_line_at_cursor():
cell = ""
(line, offset) = line_at_cursor(cell, cursor_pos=11)
assert line == ""
assert offset == 0
# The position after a newline should be the start of the following line.
cell = "One\nTwo\n"
(line, offset) = line_at_cursor(cell, cursor_pos=4)
assert line == "Two\n"
assert offset == 4
# The end of a cell should be on the last line
cell = "pri\npri"
(line, offset) = line_at_cursor(cell, cursor_pos=7)
assert line == "pri"
assert offset == 4
@pytest.mark.parametrize(
"c, token",
zip(
list(range(16, 22)) + list(range(22, 28)),
["int"] * (22 - 16) + ["map"] * (28 - 22),
),
)
def test_multiline_statement(c, token):
cell = """a = (1,
3)
int()
map()
"""
expect_token(token, cell, c)
|
