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-rw-r--r--Lib/test/test_tokenize.py351
1 files changed, 305 insertions, 46 deletions
diff --git a/Lib/test/test_tokenize.py b/Lib/test/test_tokenize.py
index 2938520..308158f 100644
--- a/Lib/test/test_tokenize.py
+++ b/Lib/test/test_tokenize.py
@@ -1,13 +1,14 @@
+# -*- coding: utf-8 -*-
+
doctests = """
Tests for the tokenize module.
- >>> import glob, random, sys
-
The tests can be really simple. Given a small fragment of source
code, print out a table with tokens. The ENDMARK is omitted for
brevity.
>>> dump_tokens("1 + 1")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NUMBER '1' (1, 0) (1, 1)
OP '+' (1, 2) (1, 3)
NUMBER '1' (1, 4) (1, 5)
@@ -15,6 +16,7 @@ brevity.
>>> dump_tokens("if False:\\n"
... " # NL\\n"
... " True = False # NEWLINE\\n")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'if' (1, 0) (1, 2)
NAME 'False' (1, 3) (1, 8)
OP ':' (1, 8) (1, 9)
@@ -34,27 +36,12 @@ brevity.
... x += 2
... x += 5
... \"""
- >>> for tok in generate_tokens(StringIO(indent_error_file).readline): pass
+ >>> readline = BytesIO(indent_error_file.encode('utf-8')).readline
+ >>> for tok in tokenize(readline): pass
Traceback (most recent call last):
...
IndentationError: unindent does not match any outer indentation level
-Test roundtrip for `untokenize`. `f` is an open file or a string. The source
-code in f is tokenized, converted back to source code via tokenize.untokenize(),
-and tokenized again from the latter. The test fails if the second tokenization
-doesn't match the first.
-
- >>> def roundtrip(f):
- ... if isinstance(f, str): f = StringIO(f)
- ... token_list = list(generate_tokens(f.readline))
- ... f.close()
- ... tokens1 = [tok[:2] for tok in token_list]
- ... new_text = untokenize(tokens1)
- ... readline = iter(new_text.splitlines(1)).__next__
- ... tokens2 = [tok[:2] for tok in generate_tokens(readline)]
- ... return tokens1 == tokens2
- ...
-
There are some standard formattig practises that are easy to get right.
>>> roundtrip("if x == 1:\\n"
@@ -67,14 +54,14 @@ There are some standard formattig practises that are easy to get right.
Some people use different formatting conventions, which makes
untokenize a little trickier. Note that this test involves trailing
whitespace after the colon. Note that we use hex escapes to make the
-two trailing blanks apperant in the expected output.
+two trailing blanks apparent in the expected output.
>>> roundtrip("if x == 1 : \\n"
... " print(x)\\n")
True
>>> f = test_support.findfile("tokenize_tests.txt")
- >>> roundtrip(open(f))
+ >>> roundtrip(open(f, 'rb'))
True
>>> roundtrip("if x == 1:\\n"
@@ -122,27 +109,33 @@ Balancing continuation
Ordinary integers and binary operators
>>> dump_tokens("0xff <= 255")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NUMBER '0xff' (1, 0) (1, 4)
OP '<=' (1, 5) (1, 7)
NUMBER '255' (1, 8) (1, 11)
>>> dump_tokens("0b10 <= 255")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NUMBER '0b10' (1, 0) (1, 4)
OP '<=' (1, 5) (1, 7)
NUMBER '255' (1, 8) (1, 11)
>>> dump_tokens("0o123 <= 0O123")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NUMBER '0o123' (1, 0) (1, 5)
OP '<=' (1, 6) (1, 8)
NUMBER '0O123' (1, 9) (1, 14)
>>> dump_tokens("1234567 > ~0x15")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NUMBER '1234567' (1, 0) (1, 7)
OP '>' (1, 8) (1, 9)
OP '~' (1, 10) (1, 11)
NUMBER '0x15' (1, 11) (1, 15)
>>> dump_tokens("2134568 != 1231515")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NUMBER '2134568' (1, 0) (1, 7)
OP '!=' (1, 8) (1, 10)
NUMBER '1231515' (1, 11) (1, 18)
>>> dump_tokens("(-124561-1) & 200000000")
+ ENCODING 'utf-8' (0, 0) (0, 0)
OP '(' (1, 0) (1, 1)
OP '-' (1, 1) (1, 2)
NUMBER '124561' (1, 2) (1, 8)
@@ -152,15 +145,18 @@ Ordinary integers and binary operators
OP '&' (1, 12) (1, 13)
NUMBER '200000000' (1, 14) (1, 23)
>>> dump_tokens("0xdeadbeef != -1")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NUMBER '0xdeadbeef' (1, 0) (1, 10)
OP '!=' (1, 11) (1, 13)
OP '-' (1, 14) (1, 15)
NUMBER '1' (1, 15) (1, 16)
>>> dump_tokens("0xdeadc0de & 12345")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NUMBER '0xdeadc0de' (1, 0) (1, 10)
OP '&' (1, 11) (1, 12)
NUMBER '12345' (1, 13) (1, 18)
>>> dump_tokens("0xFF & 0x15 | 1234")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NUMBER '0xFF' (1, 0) (1, 4)
OP '&' (1, 5) (1, 6)
NUMBER '0x15' (1, 7) (1, 11)
@@ -170,18 +166,22 @@ Ordinary integers and binary operators
Long integers
>>> dump_tokens("x = 0")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '0' (1, 4) (1, 5)
>>> dump_tokens("x = 0xfffffffffff")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '0xffffffffff (1, 4) (1, 17)
>>> dump_tokens("x = 123141242151251616110")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '123141242151 (1, 4) (1, 25)
>>> dump_tokens("x = -15921590215012591")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
OP '-' (1, 4) (1, 5)
@@ -190,32 +190,39 @@ Long integers
Floating point numbers
>>> dump_tokens("x = 3.14159")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '3.14159' (1, 4) (1, 11)
>>> dump_tokens("x = 314159.")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '314159.' (1, 4) (1, 11)
>>> dump_tokens("x = .314159")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '.314159' (1, 4) (1, 11)
>>> dump_tokens("x = 3e14159")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '3e14159' (1, 4) (1, 11)
>>> dump_tokens("x = 3E123")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '3E123' (1, 4) (1, 9)
>>> dump_tokens("x+y = 3e-1230")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '+' (1, 1) (1, 2)
NAME 'y' (1, 2) (1, 3)
OP '=' (1, 4) (1, 5)
NUMBER '3e-1230' (1, 6) (1, 13)
>>> dump_tokens("x = 3.14e159")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '3.14e159' (1, 4) (1, 12)
@@ -223,6 +230,7 @@ Floating point numbers
String literals
>>> dump_tokens("x = ''; y = \\\"\\\"")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
STRING "''" (1, 4) (1, 6)
@@ -231,6 +239,7 @@ String literals
OP '=' (1, 10) (1, 11)
STRING '""' (1, 12) (1, 14)
>>> dump_tokens("x = '\\\"'; y = \\\"'\\\"")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
STRING '\\'"\\'' (1, 4) (1, 7)
@@ -239,24 +248,28 @@ String literals
OP '=' (1, 11) (1, 12)
STRING '"\\'"' (1, 13) (1, 16)
>>> dump_tokens("x = \\\"doesn't \\\"shrink\\\", does it\\\"")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
STRING '"doesn\\'t "' (1, 4) (1, 14)
NAME 'shrink' (1, 14) (1, 20)
STRING '", does it"' (1, 20) (1, 31)
>>> dump_tokens("x = 'abc' + 'ABC'")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
STRING "'abc'" (1, 4) (1, 9)
OP '+' (1, 10) (1, 11)
STRING "'ABC'" (1, 12) (1, 17)
>>> dump_tokens('y = "ABC" + "ABC"')
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'y' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
STRING '"ABC"' (1, 4) (1, 9)
OP '+' (1, 10) (1, 11)
STRING '"ABC"' (1, 12) (1, 17)
>>> dump_tokens("x = r'abc' + r'ABC' + R'ABC' + R'ABC'")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
STRING "r'abc'" (1, 4) (1, 10)
@@ -267,6 +280,7 @@ String literals
OP '+' (1, 29) (1, 30)
STRING "R'ABC'" (1, 31) (1, 37)
>>> dump_tokens('y = r"abc" + r"ABC" + R"ABC" + R"ABC"')
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'y' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
STRING 'r"abc"' (1, 4) (1, 10)
@@ -280,6 +294,7 @@ String literals
Operators
>>> dump_tokens("def d22(a, b, c=2, d=2, *k): pass")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'def' (1, 0) (1, 3)
NAME 'd22' (1, 4) (1, 7)
OP '(' (1, 7) (1, 8)
@@ -301,6 +316,7 @@ Operators
OP ':' (1, 27) (1, 28)
NAME 'pass' (1, 29) (1, 33)
>>> dump_tokens("def d01v_(a=1, *k, **w): pass")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'def' (1, 0) (1, 3)
NAME 'd01v_' (1, 4) (1, 9)
OP '(' (1, 9) (1, 10)
@@ -321,6 +337,7 @@ Comparison
>>> dump_tokens("if 1 < 1 > 1 == 1 >= 5 <= 0x15 <= 0x12 != " +
... "1 and 5 in 1 not in 1 is 1 or 5 is not 1: pass")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'if' (1, 0) (1, 2)
NUMBER '1' (1, 3) (1, 4)
OP '<' (1, 5) (1, 6)
@@ -357,6 +374,7 @@ Comparison
Shift
>>> dump_tokens("x = 1 << 1 >> 5")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '1' (1, 4) (1, 5)
@@ -368,6 +386,7 @@ Shift
Additive
>>> dump_tokens("x = 1 - y + 15 - 1 + 0x124 + z + a[5]")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '1' (1, 4) (1, 5)
@@ -390,6 +409,7 @@ Additive
Multiplicative
>>> dump_tokens("x = 1//1*1/5*12%0x12")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '1' (1, 4) (1, 5)
@@ -407,6 +427,7 @@ Multiplicative
Unary
>>> dump_tokens("~1 ^ 1 & 1 |1 ^ -1")
+ ENCODING 'utf-8' (0, 0) (0, 0)
OP '~' (1, 0) (1, 1)
NUMBER '1' (1, 1) (1, 2)
OP '^' (1, 3) (1, 4)
@@ -419,6 +440,7 @@ Unary
OP '-' (1, 16) (1, 17)
NUMBER '1' (1, 17) (1, 18)
>>> dump_tokens("-1*1/1+1*1//1 - ---1**1")
+ ENCODING 'utf-8' (0, 0) (0, 0)
OP '-' (1, 0) (1, 1)
NUMBER '1' (1, 1) (1, 2)
OP '*' (1, 2) (1, 3)
@@ -442,6 +464,7 @@ Unary
Selector
>>> dump_tokens("import sys, time\\nx = sys.modules['time'].time()")
+ ENCODING 'utf-8' (0, 0) (0, 0)
NAME 'import' (1, 0) (1, 6)
NAME 'sys' (1, 7) (1, 10)
OP ',' (1, 10) (1, 11)
@@ -463,6 +486,7 @@ Selector
Methods
>>> dump_tokens("@staticmethod\\ndef foo(x,y): pass")
+ ENCODING 'utf-8' (0, 0) (0, 0)
OP '@' (1, 0) (1, 1)
NAME 'staticmethod (1, 1) (1, 13)
NEWLINE '\\n' (1, 13) (1, 14)
@@ -485,42 +509,43 @@ Backslash means line continuation, except for comments
True
>>> roundtrip("# Comment \\\\nx = 0")
True
-
- >>>
- >>> tempdir = os.path.dirname(f) or os.curdir
- >>> testfiles = glob.glob(os.path.join(tempdir, "test*.py"))
- >>> if not test_support.is_resource_enabled("compiler"):
- ... testfiles = random.sample(testfiles, 10)
- ...
- >>> for testfile in testfiles:
- ... if not roundtrip(open(testfile)): break
- ... else: True
- True
"""
-
from test import test_support
-from tokenize import (tokenize, untokenize, generate_tokens, NUMBER, NAME, OP,
- STRING, ENDMARKER, tok_name)
-from io import StringIO
-import os
+from tokenize import (tokenize, _tokenize, untokenize, NUMBER, NAME, OP,
+ STRING, ENDMARKER, tok_name, detect_encoding)
+from io import BytesIO
+from unittest import TestCase
+import os, sys, glob
def dump_tokens(s):
"""Print out the tokens in s in a table format.
The ENDMARKER is omitted.
"""
- f = StringIO(s)
- for type, token, start, end, line in generate_tokens(f.readline):
+ f = BytesIO(s.encode('utf-8'))
+ for type, token, start, end, line in tokenize(f.readline):
if type == ENDMARKER:
break
type = tok_name[type]
print("%(type)-10.10s %(token)-13.13r %(start)s %(end)s" % locals())
-def roundtrip(s):
- f = StringIO(s)
- source = untokenize(generate_tokens(f.readline))
- print(source, end="")
+def roundtrip(f):
+ """
+ Test roundtrip for `untokenize`. `f` is an open file or a string.
+ The source code in f is tokenized, converted back to source code via
+ tokenize.untokenize(), and tokenized again from the latter. The test
+ fails if the second tokenization doesn't match the first.
+ """
+ if isinstance(f, str):
+ f = BytesIO(f.encode('utf-8'))
+ token_list = list(tokenize(f.readline))
+ f.close()
+ tokens1 = [tok[:2] for tok in token_list]
+ new_bytes = untokenize(tokens1)
+ readline = (line for line in new_bytes.splitlines(1)).__next__
+ tokens2 = [tok[:2] for tok in tokenize(readline)]
+ return tokens1 == tokens2
# This is an example from the docs, set up as a doctest.
def decistmt(s):
@@ -545,9 +570,8 @@ def decistmt(s):
>>> exec(decistmt(s))
-3.217160342717258261933904529E-7
"""
-
result = []
- g = generate_tokens(StringIO(s).readline) # tokenize the string
+ g = tokenize(BytesIO(s.encode('utf-8')).readline) # tokenize the string
for toknum, tokval, _, _, _ in g:
if toknum == NUMBER and '.' in tokval: # replace NUMBER tokens
result.extend([
@@ -558,7 +582,238 @@ def decistmt(s):
])
else:
result.append((toknum, tokval))
- return untokenize(result)
+ return untokenize(result).decode('utf-8')
+
+
+class TestTokenizerAdheresToPep0263(TestCase):
+ """
+ Test that tokenizer adheres to the coding behaviour stipulated in PEP 0263.
+ """
+
+ def _testFile(self, filename):
+ path = os.path.join(os.path.dirname(__file__), filename)
+ return roundtrip(open(path, 'rb'))
+
+ def test_utf8_coding_cookie_and_no_utf8_bom(self):
+ f = 'tokenize_tests-utf8-coding-cookie-and-utf8-bom-sig.txt'
+ self.assertTrue(self._testFile(f))
+
+ def test_latin1_coding_cookie_and_utf8_bom(self):
+ """
+ As per PEP 0263, if a file starts with a utf-8 BOM signature, the only
+ allowed encoding for the comment is 'utf-8'. The text file used in
+ this test starts with a BOM signature, but specifies latin1 as the
+ coding, so verify that a SyntaxError is raised, which matches the
+ behaviour of the interpreter when it encounters a similar condition.
+ """
+ f = 'tokenize_tests-latin1-coding-cookie-and-utf8-bom-sig.txt'
+ self.failUnlessRaises(SyntaxError, self._testFile, f)
+
+ def test_no_coding_cookie_and_utf8_bom(self):
+ f = 'tokenize_tests-no-coding-cookie-and-utf8-bom-sig-only.txt'
+ self.assertTrue(self._testFile(f))
+
+ def test_utf8_coding_cookie_and_utf8_bom(self):
+ f = 'tokenize_tests-utf8-coding-cookie-and-utf8-bom-sig.txt'
+ self.assertTrue(self._testFile(f))
+
+
+class Test_Tokenize(TestCase):
+
+ def test__tokenize_decodes_with_specified_encoding(self):
+ literal = '"ЉЊЈЁЂ"'
+ line = literal.encode('utf-8')
+ first = False
+ def readline():
+ nonlocal first
+ if not first:
+ first = True
+ return line
+ else:
+ return b''
+
+ # skip the initial encoding token and the end token
+ tokens = list(_tokenize(readline, encoding='utf-8'))[1:-1]
+ expected_tokens = [(3, '"ЉЊЈЁЂ"', (1, 0), (1, 7), '"ЉЊЈЁЂ"')]
+ self.assertEquals(tokens, expected_tokens,
+ "bytes not decoded with encoding")
+
+ def test__tokenize_does_not_decode_with_encoding_none(self):
+ literal = '"ЉЊЈЁЂ"'
+ first = False
+ def readline():
+ nonlocal first
+ if not first:
+ first = True
+ return literal
+ else:
+ return b''
+
+ # skip the end token
+ tokens = list(_tokenize(readline, encoding=None))[:-1]
+ expected_tokens = [(3, '"ЉЊЈЁЂ"', (1, 0), (1, 7), '"ЉЊЈЁЂ"')]
+ self.assertEquals(tokens, expected_tokens,
+ "string not tokenized when encoding is None")
+
+
+class TestDetectEncoding(TestCase):
+
+ def get_readline(self, lines):
+ index = 0
+ def readline():
+ nonlocal index
+ if index == len(lines):
+ raise StopIteration
+ line = lines[index]
+ index += 1
+ return line
+ return readline
+
+ def test_no_bom_no_encoding_cookie(self):
+ lines = (
+ b'# something\n',
+ b'print(something)\n',
+ b'do_something(else)\n'
+ )
+ encoding, consumed_lines = detect_encoding(self.get_readline(lines))
+ self.assertEquals(encoding, 'utf-8')
+ self.assertEquals(consumed_lines, list(lines[:2]))
+
+ def test_bom_no_cookie(self):
+ lines = (
+ b'\xef\xbb\xbf# something\n',
+ b'print(something)\n',
+ b'do_something(else)\n'
+ )
+ encoding, consumed_lines = detect_encoding(self.get_readline(lines))
+ self.assertEquals(encoding, 'utf-8')
+ self.assertEquals(consumed_lines,
+ [b'# something\n', b'print(something)\n'])
+
+ def test_cookie_first_line_no_bom(self):
+ lines = (
+ b'# -*- coding: latin-1 -*-\n',
+ b'print(something)\n',
+ b'do_something(else)\n'
+ )
+ encoding, consumed_lines = detect_encoding(self.get_readline(lines))
+ self.assertEquals(encoding, 'latin-1')
+ self.assertEquals(consumed_lines, [b'# -*- coding: latin-1 -*-\n'])
+
+ def test_matched_bom_and_cookie_first_line(self):
+ lines = (
+ b'\xef\xbb\xbf# coding=utf-8\n',
+ b'print(something)\n',
+ b'do_something(else)\n'
+ )
+ encoding, consumed_lines = detect_encoding(self.get_readline(lines))
+ self.assertEquals(encoding, 'utf-8')
+ self.assertEquals(consumed_lines, [b'# coding=utf-8\n'])
+
+ def test_mismatched_bom_and_cookie_first_line_raises_syntaxerror(self):
+ lines = (
+ b'\xef\xbb\xbf# vim: set fileencoding=ascii :\n',
+ b'print(something)\n',
+ b'do_something(else)\n'
+ )
+ readline = self.get_readline(lines)
+ self.assertRaises(SyntaxError, detect_encoding, readline)
+
+ def test_cookie_second_line_no_bom(self):
+ lines = (
+ b'#! something\n',
+ b'# vim: set fileencoding=ascii :\n',
+ b'print(something)\n',
+ b'do_something(else)\n'
+ )
+ encoding, consumed_lines = detect_encoding(self.get_readline(lines))
+ self.assertEquals(encoding, 'ascii')
+ expected = [b'#! something\n', b'# vim: set fileencoding=ascii :\n']
+ self.assertEquals(consumed_lines, expected)
+
+ def test_matched_bom_and_cookie_second_line(self):
+ lines = (
+ b'\xef\xbb\xbf#! something\n',
+ b'f# coding=utf-8\n',
+ b'print(something)\n',
+ b'do_something(else)\n'
+ )
+ encoding, consumed_lines = detect_encoding(self.get_readline(lines))
+ self.assertEquals(encoding, 'utf-8')
+ self.assertEquals(consumed_lines,
+ [b'#! something\n', b'f# coding=utf-8\n'])
+
+ def test_mismatched_bom_and_cookie_second_line_raises_syntaxerror(self):
+ lines = (
+ b'\xef\xbb\xbf#! something\n',
+ b'# vim: set fileencoding=ascii :\n',
+ b'print(something)\n',
+ b'do_something(else)\n'
+ )
+ readline = self.get_readline(lines)
+ self.assertRaises(SyntaxError, detect_encoding, readline)
+
+ def test_short_files(self):
+ readline = self.get_readline((b'print(something)\n',))
+ encoding, consumed_lines = detect_encoding(readline)
+ self.assertEquals(encoding, 'utf-8')
+ self.assertEquals(consumed_lines, [b'print(something)\n'])
+
+ encoding, consumed_lines = detect_encoding(self.get_readline(()))
+ self.assertEquals(encoding, 'utf-8')
+ self.assertEquals(consumed_lines, [])
+
+ readline = self.get_readline((b'\xef\xbb\xbfprint(something)\n',))
+ encoding, consumed_lines = detect_encoding(readline)
+ self.assertEquals(encoding, 'utf-8')
+ self.assertEquals(consumed_lines, [b'print(something)\n'])
+
+ readline = self.get_readline((b'\xef\xbb\xbf',))
+ encoding, consumed_lines = detect_encoding(readline)
+ self.assertEquals(encoding, 'utf-8')
+ self.assertEquals(consumed_lines, [])
+
+
+class TestTokenize(TestCase):
+
+ def test_tokenize(self):
+ import tokenize as tokenize_module
+ encoding = object()
+ encoding_used = None
+ def mock_detect_encoding(readline):
+ return encoding, ['first', 'second']
+
+ def mock__tokenize(readline, encoding):
+ nonlocal encoding_used
+ encoding_used = encoding
+ out = []
+ while True:
+ next_line = readline()
+ if next_line:
+ out.append(next_line)
+ continue
+ return out
+
+ counter = 0
+ def mock_readline():
+ nonlocal counter
+ counter += 1
+ if counter == 5:
+ return b''
+ return counter
+
+ orig_detect_encoding = tokenize_module.detect_encoding
+ orig__tokenize = tokenize_module._tokenize
+ tokenize_module.detect_encoding = mock_detect_encoding
+ tokenize_module._tokenize = mock__tokenize
+ try:
+ results = tokenize(mock_readline)
+ self.assertEquals(list(results), ['first', 'second', 1, 2, 3, 4])
+ finally:
+ tokenize_module.detect_encoding = orig_detect_encoding
+ tokenize_module._tokenize = orig__tokenize
+
+ self.assertTrue(encoding_used, encoding)
__test__ = {"doctests" : doctests, 'decistmt': decistmt}
@@ -566,6 +821,10 @@ __test__ = {"doctests" : doctests, 'decistmt': decistmt}
def test_main():
from test import test_tokenize
test_support.run_doctest(test_tokenize, True)
+ test_support.run_unittest(TestTokenizerAdheresToPep0263)
+ test_support.run_unittest(Test_Tokenize)
+ test_support.run_unittest(TestDetectEncoding)
+ test_support.run_unittest(TestTokenize)
if __name__ == "__main__":
test_main()
generated by cgit v0.12 at 2024-11-19 13:25:33 (GMT)