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[3.11] gh-94808: Coverage: Test that maximum indentation level is handled (GH-95926) #97979

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Merged
nanjekyejoannah merged 1 commit into from
Oct 6, 2022
Merged

[3.11] gh-94808: Coverage: Test that maximum indentation level is handled (GH-95926) #97979

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gh-94808: Coverage: Test that maximum indentation level is handled (G… 
…H-95926)

* gh-94808: Coverage: Test that maximum indentation level is handled

* Use "compile" rather than "exec"
(cherry picked from commit 23e83a8)

Co-authored-by: Michael Droettboom <mdboom@gmail.com>
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@mdboom @miss-islington
mdboom authored and miss-islington committed Oct 6, 2022
commit 60740813318c5f0a8dfdba93684c99b961585e8d
22 changes: 21 additions & 1 deletion Lib/test/test_tokenize.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@
from tokenize import (tokenize, _tokenize, untokenize, NUMBER, NAME, OP,
STRING, ENDMARKER, ENCODING, tok_name, detect_encoding,
open as tokenize_open, Untokenizer, generate_tokens,
NEWLINE, _generate_tokens_from_c_tokenizer)
NEWLINE, _generate_tokens_from_c_tokenizer, DEDENT)
from io import BytesIO, StringIO
import unittest
from textwrap import dedent
Expand Down Expand Up @@ -2512,6 +2512,26 @@ def get_tokens(string):
self.assertRaises(SyntaxError, get_tokens, "("*1000+"a"+")"*1000)
self.assertRaises(SyntaxError, get_tokens, "]")

def test_max_indent(self):
MAXINDENT = 100

def generate_source(indents):
source = ''.join((' ' * x) + 'if True:\n' for x in range(indents))
source += ' ' * indents + 'pass\n'
return source

valid = generate_source(MAXINDENT - 1)
tokens = list(_generate_tokens_from_c_tokenizer(valid))
self.assertEqual(tokens[-1].type, DEDENT)
compile(valid, "<string>", "exec")

invalid = generate_source(MAXINDENT)
tokens = list(_generate_tokens_from_c_tokenizer(invalid))
self.assertEqual(tokens[-1].type, NEWLINE)
self.assertRaises(
IndentationError, compile, invalid, "<string>", "exec"
)

def test_continuation_lines_indentation(self):
def get_tokens(string):
return [(kind, string) for (kind, string, *_) in _generate_tokens_from_c_tokenizer(string)]
Expand Down