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import re
from typing import Optional, Tuple
import unittest
from bpython.line import (
LinePart,
current_word,
current_dict_key,
current_dict,
current_string,
current_object,
current_object_attribute,
current_from_import_from,
current_from_import_import,
current_import,
current_method_definition_name,
current_single_word,
current_expression_attribute,
current_dotted_attribute,
)
def cursor(s):
"""'ab|c' -> (2, 'abc')"""
cursor_offset = s.index("|")
line = s[:cursor_offset] + s[cursor_offset + 1 :]
return cursor_offset, line
def decode(s: str) -> tuple[tuple[int, str], LinePart | None]:
"""'a<bd|c>d' -> ((3, 'abcd'), (1, 3, 'bdc'))"""
if not s.count("|") == 1:
raise ValueError("match helper needs | to occur once")
if s.count("<") != s.count(">") or s.count("<") not in (0, 1):
raise ValueError("match helper needs <, and > to occur just once")
matches = list(re.finditer(r"[<>|]", s))
assert len(matches) in [1, 3], [m.group() for m in matches]
d = {}
for i, m in enumerate(matches):
d[m.group(0)] = m.start() - i
s = s[: m.start() - i] + s[m.end() - i :]
assert len(d) in [1, 3], "need all the parts just once! %r" % d
if "<" in d:
return (d["|"], s), LinePart(d["<"], d[">"], s[d["<"] : d[">"]])
else:
return (d["|"], s), None
def line_with_cursor(cursor_offset: int, line: str) -> str:
return line[:cursor_offset] + "|" + line[cursor_offset:]
def encode(cursor_offset: int, line: str, result: LinePart | None) -> str:
"""encode(3, 'abdcd', (1, 3, 'bdc')) -> a<bd|c>d'
Written for prettier assert error messages
"""
encoded_line = line_with_cursor(cursor_offset, line)
if result is None:
return encoded_line
start = result.start
end = result.stop
value = result.word
assert line[start:end] == value
if start < cursor_offset:
encoded_line = encoded_line[:start] + "<" + encoded_line[start:]
else:
encoded_line = (
encoded_line[: start + 1] + "<" + encoded_line[start + 1 :]
)
if end < cursor_offset:
encoded_line = encoded_line[: end + 1] + ">" + encoded_line[end + 1 :]
else:
encoded_line = encoded_line[: end + 2] + ">" + encoded_line[end + 2 :]
return encoded_line
class LineTestCase(unittest.TestCase):
def assertAccess(self, s):
r"""Asserts that self.func matches as described
by s, which uses a little language to describe matches:
abcd<efg>hijklmnopqrstuvwx|yz
/|\ /|\ /|\
| | |
the function should the current cursor position
match this "efg" is between the x and y
"""
(cursor_offset, line), match = decode(s)
result = self.func(cursor_offset, line)
self.assertEqual(
result,
match,
"%s(%r) result\n%r (%r) doesn't match expected\n%r (%r)"
% (
self.func.__name__,
line_with_cursor(cursor_offset, line),
encode(cursor_offset, line, result),
result,
s,
match,
),
)
class TestHelpers(LineTestCase):
def test_I(self):
self.assertEqual(cursor("asd|fgh"), (3, "asdfgh"))
def test_decode(self):
self.assertEqual(
decode("a<bd|c>d"), ((3, "abdcd"), LinePart(1, 4, "bdc"))
)
self.assertEqual(
decode("a|<bdc>d"), ((1, "abdcd"), LinePart(1, 4, "bdc"))
)
self.assertEqual(
decode("a<bdc>d|"), ((5, "abdcd"), LinePart(1, 4, "bdc"))
)
def test_encode(self):
self.assertEqual(encode(3, "abdcd", LinePart(1, 4, "bdc")), "a<bd|c>d")
self.assertEqual(encode(1, "abdcd", LinePart(1, 4, "bdc")), "a|<bdc>d")
self.assertEqual(encode(4, "abdcd", LinePart(1, 4, "bdc")), "a<bdc|>d")
self.assertEqual(encode(5, "abdcd", LinePart(1, 4, "bdc")), "a<bdc>d|")
def test_assert_access(self):
def dumb_func(cursor_offset, line):
return LinePart(0, 2, "ab")
self.func = dumb_func
self.assertAccess("<a|b>d")
class TestCurrentWord(LineTestCase):
def setUp(self):
self.func = current_word
def test_simple(self):
self.assertAccess("|")
self.assertAccess("|asdf")
self.assertAccess("<a|sdf>")
self.assertAccess("<asdf|>")
self.assertAccess("<asdfg|>")
self.assertAccess("asdf + <asdfg|>")
self.assertAccess("<asdfg|> + asdf")
def test_inside(self):
self.assertAccess("<asd|>")
self.assertAccess("<asd|fg>")
def test_dots(self):
self.assertAccess("<Object.attr1|>")
self.assertAccess("<Object.attr1.attr2|>")
self.assertAccess("<Object.att|r1.attr2>")
self.assertAccess("stuff[stuff] + {123: 456} + <Object.attr1.attr2|>")
self.assertAccess("stuff[<asd|fg>]")
self.assertAccess("stuff[asdf[<asd|fg>]")
def test_non_dots(self):
self.assertAccess("].asdf|")
self.assertAccess(").asdf|")
self.assertAccess("foo[0].asdf|")
self.assertAccess("foo().asdf|")
self.assertAccess("foo().|")
self.assertAccess("foo().asdf.|")
self.assertAccess("foo[0].asdf.|")
def test_open_paren(self):
self.assertAccess("<foo(|>")
# documenting current behavior - TODO is this intended?
class TestCurrentDictKey(LineTestCase):
def setUp(self):
self.func = current_dict_key
def test_simple(self):
self.assertAccess("asdf|")
self.assertAccess("asdf|")
self.assertAccess("asdf[<>|")
self.assertAccess("asdf[<>|]")
self.assertAccess("object.dict[<abc|>")
self.assertAccess("asdf|")
self.assertAccess("asdf[<(>|]")
self.assertAccess("asdf[<(1>|]")
self.assertAccess("asdf[<(1,>|]")
self.assertAccess("asdf[<(1,)>|]")
self.assertAccess("asdf[<(1, >|]")
self.assertAccess("asdf[<(1, 2)>|]")
# TODO self.assertAccess('d[d[<12|>')
self.assertAccess("d[<'a>|")
self.assertAccess("object.dict['a'bcd'], object.dict[<'abc>|")
self.assertAccess("object.dict[<'a'bcd'>|], object.dict['abc")
self.assertAccess(r"object.dict[<'a\'\\\"\n\\'>|")
self.assertAccess("object.dict[<\"abc'>|")
self.assertAccess("object.dict[<(1, 'apple', 2.134>|]")
self.assertAccess("object.dict[<(1, 'apple', 2.134)>|]")
self.assertAccess("object.dict[<-1000>|")
self.assertAccess("object.dict[<-0.23948>|")
self.assertAccess("object.dict[<'\U0001ffff>|")
self.assertAccess(r"object.dict[<'a\'\\\"\n\\'>|]")
self.assertAccess(r"object.dict[<'a\'\\\"\n\\|[[]'>")
self.assertAccess('object.dict[<"a]bc[|]">]')
self.assertAccess("object.dict[<'abcd[]>|")
class TestCurrentDict(LineTestCase):
def setUp(self):
self.func = current_dict
def test_simple(self):
self.assertAccess("asdf|")
self.assertAccess("asdf|")
self.assertAccess("<asdf>[|")
self.assertAccess("<asdf>[|]")
self.assertAccess("<object.dict>[abc|")
self.assertAccess("asdf|")
class TestCurrentString(LineTestCase):
def setUp(self):
self.func = current_string
def test_closed(self):
self.assertAccess('"<as|df>"')
self.assertAccess('"<asdf|>"')
self.assertAccess('"<|asdf>"')
self.assertAccess("'<asdf|>'")
self.assertAccess("'<|asdf>'")
self.assertAccess("'''<asdf|>'''")
self.assertAccess('"""<asdf|>"""')
self.assertAccess('asdf.afd("a") + "<asdf|>"')
def test_open(self):
self.assertAccess('"<as|df>')
self.assertAccess('"<asdf|>')
self.assertAccess('"<|asdf>')
self.assertAccess("'<asdf|>")
self.assertAccess("'<|asdf>")
self.assertAccess("'''<asdf|>")
self.assertAccess('"""<asdf|>')
self.assertAccess('asdf.afd("a") + "<asdf|>')
class TestCurrentObject(LineTestCase):
def setUp(self):
self.func = current_object
def test_simple(self):
self.assertAccess("<Object>.attr1|")
self.assertAccess("<Object>.|")
self.assertAccess("Object|")
self.assertAccess("Object|.")
self.assertAccess("<Object>.|")
self.assertAccess("<Object.attr1>.attr2|")
self.assertAccess("<Object>.att|r1.attr2")
self.assertAccess("stuff[stuff] + {123: 456} + <Object.attr1>.attr2|")
self.assertAccess("stuff[asd|fg]")
self.assertAccess("stuff[asdf[asd|fg]")
class TestCurrentAttribute(LineTestCase):
def setUp(self):
self.func = current_object_attribute
def test_simple(self):
self.assertAccess("Object.<attr1|>")
self.assertAccess("Object.attr1.<attr2|>")
self.assertAccess("Object.<att|r1>.attr2")
self.assertAccess("stuff[stuff] + {123: 456} + Object.attr1.<attr2|>")
self.assertAccess("stuff[asd|fg]")
self.assertAccess("stuff[asdf[asd|fg]")
self.assertAccess("Object.attr1.<|attr2>")
self.assertAccess("Object.<attr1|>.attr2")
class TestCurrentFromImportFrom(LineTestCase):
def setUp(self):
self.func = current_from_import_from
def test_simple(self):
self.assertAccess("from <sys|> import path")
self.assertAccess("from <sys> import path|")
self.assertAccess("if True|: from sys import path")
self.assertAccess("if True: |from sys import path")
self.assertAccess("if True: from <sys> import p|ath")
self.assertAccess("if True: from sys imp|ort path")
self.assertAccess("if True: from sys import |path")
self.assertAccess("if True: from sys import path.stu|ff")
self.assertAccess("if True: from <sys.path> import sep|")
self.assertAccess("from <os.p|>")
class TestCurrentFromImportImport(LineTestCase):
def setUp(self):
self.func = current_from_import_import
def test_simple(self):
self.assertAccess("from sys import <path|>")
self.assertAccess("from sys import <p|ath>")
self.assertAccess("from sys import |path")
self.assertAccess("from sys| import path")
self.assertAccess("from s|ys import path")
self.assertAccess("from |sys import path")
self.assertAccess("from xml.dom import <N|ode>")
# because syntax error
self.assertAccess("from xml.dom import Node.as|d")
class TestCurrentImport(LineTestCase):
def setUp(self):
self.func = current_import
def test_simple(self):
self.assertAccess("import <path|>")
self.assertAccess("import <p|ath>")
self.assertAccess("import |path")
self.assertAccess("import path, <another|>")
self.assertAccess("import path another|")
self.assertAccess("if True: import <path|>")
self.assertAccess("if True: import <xml.dom.minidom|>")
self.assertAccess("if True: import <xml.do|m.minidom>")
self.assertAccess("if True: import <xml.do|m.minidom> as something")
class TestMethodDefinitionName(LineTestCase):
def setUp(self):
self.func = current_method_definition_name
def test_simple(self):
self.assertAccess("def <foo|>")
self.assertAccess(" def bar(x, y)|:")
self.assertAccess(" def <bar|>(x, y)")
class TestSingleWord(LineTestCase):
def setUp(self):
self.func = current_single_word
def test_simple(self):
self.assertAccess("foo.bar|")
self.assertAccess(".foo|")
self.assertAccess(" <foo|>")
class TestCurrentExpressionAttribute(LineTestCase):
def setUp(self):
self.func = current_expression_attribute
def test_simple(self):
self.assertAccess("Object.<attr1|>.")
self.assertAccess("Object.<|attr1>.")
self.assertAccess("Object.(|)")
self.assertAccess("Object.another.(|)")
self.assertAccess("asdf asdf asdf.(abc|)")
def test_without_dot(self):
self.assertAccess("Object|")
self.assertAccess("Object|.")
self.assertAccess("|Object.")
def test_with_whitespace(self):
self.assertAccess("Object. <attr|>")
self.assertAccess("Object .<attr|>")
self.assertAccess("Object . <attr|>")
self.assertAccess("Object .asdf attr|")
self.assertAccess("Object .<asdf|> attr")
self.assertAccess("Object. asdf attr|")
self.assertAccess("Object. <asdf|> attr")
self.assertAccess("Object . asdf attr|")
self.assertAccess("Object . <asdf|> attr")
def test_indexing(self):
self.assertAccess("abc[def].<ghi|>")
self.assertAccess("abc[def].<|ghi>")
self.assertAccess("abc[def].<gh|i>")
self.assertAccess("abc[def].gh |i")
self.assertAccess("abc[def]|")
def test_strings(self):
self.assertAccess('"hey".<a|>')
self.assertAccess('"hey"|')
self.assertAccess('"hey"|.a')
self.assertAccess('"hey".<a|b>')
self.assertAccess('"hey".asdf d|')
self.assertAccess('"hey".<|>')
class TestCurrentDottedAttribute(LineTestCase):
def setUp(self):
self.func = current_dotted_attribute
def test_simple(self):
self.assertAccess("<obj.attr>|")
self.assertAccess("(<obj.attr>|")
self.assertAccess("[<obj.attr>|")
self.assertAccess("m.body[0].value|")
self.assertAccess("m.body[0].attr.value|")
if __name__ == "__main__":
unittest.main()