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Commit 5f6fa826 authored by Serhiy Storchaka's avatar Serhiy Storchaka
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Issue #25317: Converted doctests in test_tokenize to unittests. 

Made test_tokenize discoverable.
parent 15982aad
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Showing with 332 additions and 357 deletions
Lib/test/test_tokenize.py
View file @ 5f6fa826
doctests = """
Tests for the tokenize module.
The tests can be really simple. Given a small fragment of source
code, print out a table with tokens. The ENDMARKER is omitted for
brevity.
from test import support
from tokenize import (tokenize, _tokenize, untokenize, NUMBER, NAME, OP,
STRING, ENDMARKER, ENCODING, tok_name, detect_encoding,
open as tokenize_open, Untokenizer)
from io import BytesIO
from unittest import TestCase, mock
import os
import token
>>> import glob
>>> dump_tokens("1 + 1")
ENCODING 'utf-8' (0, 0) (0, 0)
class TokenizeTest(TestCase):
# Tests for the tokenize module.
# The tests can be really simple. Given a small fragment of source
# code, print out a table with tokens. The ENDMARKER is omitted for
# brevity.
def check_tokenize(self, s, expected):
# Format the tokens in s in a table format.
# The ENDMARKER is omitted.
result = []
f = BytesIO(s.encode('utf-8'))
for type, token, start, end, line in tokenize(f.readline):
if type == ENDMARKER:
break
type = tok_name[type]
result.append(" %(type)-10.10s %(token)-13.13r %(start)s %(end)s" %
locals())
self.assertEqual(result,
[" ENCODING 'utf-8' (0, 0) (0, 0)"] +
expected.rstrip().splitlines())
def test_basic(self):
self.check_tokenize("1 + 1", """\
NUMBER '1' (1, 0) (1, 1)
OP '+' (1, 2) (1, 3)
NUMBER '1' (1, 4) (1, 5)
>>> dump_tokens("if False:\\n"
... " # NL\\n"
... " True = False # NEWLINE\\n")
ENCODING 'utf-8' (0, 0) (0, 0)
""")
self.check_tokenize("if False:\n"
" # NL\n"
" True = False # NEWLINE\n", """\
NAME 'if' (1, 0) (1, 2)
NAME 'False' (1, 3) (1, 8)
OP ':' (1, 8) (1, 9)
......@@ -30,112 +52,48 @@ brevity.
COMMENT '# NEWLINE' (3, 17) (3, 26)
NEWLINE '\\n' (3, 26) (3, 27)
DEDENT '' (4, 0) (4, 0)
>>> indent_error_file = \"""
... def k(x):
... x += 2
... x += 5
... \"""
>>> 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
There are some standard formatting practices that are easy to get right.
>>> roundtrip("if x == 1:\\n"
... " print(x)\\n")
True
>>> roundtrip("# This is a comment\\n# This also")
True
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 apparent in the expected output.
>>> roundtrip("if x == 1 : \\n"
... " print(x)\\n")
True
>>> f = support.findfile("tokenize_tests.txt")
>>> roundtrip(open(f, 'rb'))
True
>>> roundtrip("if x == 1:\\n"
... " # A comment by itself.\\n"
... " print(x) # Comment here, too.\\n"
... " # Another comment.\\n"
... "after_if = True\\n")
True
>>> roundtrip("if (x # The comments need to go in the right place\\n"
... " == 1):\\n"
... " print('x==1')\\n")
True
>>> roundtrip("class Test: # A comment here\\n"
... " # A comment with weird indent\\n"
... " after_com = 5\\n"
... " def x(m): return m*5 # a one liner\\n"
... " def y(m): # A whitespace after the colon\\n"
... " return y*4 # 3-space indent\\n")
True
Some error-handling code
>>> roundtrip("try: import somemodule\\n"
... "except ImportError: # comment\\n"
... " print('Can not import' # comment2\\n)"
... "else: print('Loaded')\\n")
True
Balancing continuation
>>> roundtrip("a = (3,4, \\n"
... "5,6)\\n"
... "y = [3, 4,\\n"
... "5]\\n"
... "z = {'a': 5,\\n"
... "'b':15, 'c':True}\\n"
... "x = len(y) + 5 - a[\\n"
... "3] - a[2]\\n"
... "+ len(z) - z[\\n"
... "'b']\\n")
True
Ordinary integers and binary operators
>>> dump_tokens("0xff <= 255")
ENCODING 'utf-8' (0, 0) (0, 0)
""")
indent_error_file = b"""\
def k(x):
x += 2
x += 5
"""
readline = BytesIO(indent_error_file).readline
with self.assertRaisesRegex(IndentationError,
"unindent does not match any "
"outer indentation level"):
for tok in tokenize(readline):
pass
def test_int(self):
# Ordinary integers and binary operators
self.check_tokenize("0xff <= 255", """\
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)
""")
self.check_tokenize("0b10 <= 255", """\
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)
""")
self.check_tokenize("0o123 <= 0O123", """\
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)
""")
self.check_tokenize("1234567 > ~0x15", """\
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)
""")
self.check_tokenize("2134568 != 1231515", """\
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)
""")
self.check_tokenize("(-124561-1) & 200000000", """\
OP '(' (1, 0) (1, 1)
OP '-' (1, 1) (1, 2)
NUMBER '124561' (1, 2) (1, 8)
......@@ -144,93 +102,93 @@ Ordinary integers and binary operators
OP ')' (1, 10) (1, 11)
OP '&' (1, 12) (1, 13)
NUMBER '200000000' (1, 14) (1, 23)
>>> dump_tokens("0xdeadbeef != -1")
ENCODING 'utf-8' (0, 0) (0, 0)
""")
self.check_tokenize("0xdeadbeef != -1", """\
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)
""")
self.check_tokenize("0xdeadc0de & 12345", """\
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)
""")
self.check_tokenize("0xFF & 0x15 | 1234", """\
NUMBER '0xFF' (1, 0) (1, 4)
OP '&' (1, 5) (1, 6)
NUMBER '0x15' (1, 7) (1, 11)
OP '|' (1, 12) (1, 13)
NUMBER '1234' (1, 14) (1, 18)
""")
Long integers
>>> dump_tokens("x = 0")
ENCODING 'utf-8' (0, 0) (0, 0)
def test_long(self):
# Long integers
self.check_tokenize("x = 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)
""")
self.check_tokenize("x = 0xfffffffffff", """\
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)
""")
self.check_tokenize("x = 123141242151251616110", """\
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)
""")
self.check_tokenize("x = -15921590215012591", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
OP '-' (1, 4) (1, 5)
NUMBER '159215902150 (1, 5) (1, 22)
""")
Floating point numbers
>>> dump_tokens("x = 3.14159")
ENCODING 'utf-8' (0, 0) (0, 0)
def test_float(self):
# Floating point numbers
self.check_tokenize("x = 3.14159", """\
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)
""")
self.check_tokenize("x = 314159.", """\
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)
""")
self.check_tokenize("x = .314159", """\
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)
""")
self.check_tokenize("x = 3e14159", """\
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)
""")
self.check_tokenize("x = 3E123", """\
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)
""")
self.check_tokenize("x+y = 3e-1230", """\
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)
""")
self.check_tokenize("x = 3.14e159", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '3.14e159' (1, 4) (1, 12)
""")
String literals
>>> dump_tokens("x = ''; y = \\\"\\\"")
ENCODING 'utf-8' (0, 0) (0, 0)
def test_string(self):
# String literals
self.check_tokenize("x = ''; y = \"\"", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
STRING "''" (1, 4) (1, 6)
......@@ -238,8 +196,8 @@ String literals
NAME 'y' (1, 8) (1, 9)
OP '=' (1, 10) (1, 11)
STRING '""' (1, 12) (1, 14)
>>> dump_tokens("x = '\\\"'; y = \\\"'\\\"")
ENCODING 'utf-8' (0, 0) (0, 0)
""")
self.check_tokenize("x = '\"'; y = \"'\"", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
STRING '\\'"\\'' (1, 4) (1, 7)
......@@ -247,29 +205,29 @@ String literals
NAME 'y' (1, 9) (1, 10)
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)
""")
self.check_tokenize("x = \"doesn't \"shrink\", does it\"", """\
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)
""")
self.check_tokenize("x = 'abc' + 'ABC'", """\
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)
""")
self.check_tokenize('y = "ABC" + "ABC"', """\
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)
""")
self.check_tokenize("x = r'abc' + r'ABC' + R'ABC' + R'ABC'", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
STRING "r'abc'" (1, 4) (1, 10)
......@@ -279,8 +237,8 @@ String literals
STRING "R'ABC'" (1, 22) (1, 28)
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)
""")
self.check_tokenize('y = r"abc" + r"ABC" + R"ABC" + R"ABC"', """\
NAME 'y' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
STRING 'r"abc"' (1, 4) (1, 10)
......@@ -290,30 +248,30 @@ String literals
STRING 'R"ABC"' (1, 22) (1, 28)
OP '+' (1, 29) (1, 30)
STRING 'R"ABC"' (1, 31) (1, 37)
""")
>>> dump_tokens("u'abc' + U'abc'")
ENCODING 'utf-8' (0, 0) (0, 0)
self.check_tokenize("u'abc' + U'abc'", """\
STRING "u'abc'" (1, 0) (1, 6)
OP '+' (1, 7) (1, 8)
STRING "U'abc'" (1, 9) (1, 15)
>>> dump_tokens('u"abc" + U"abc"')
ENCODING 'utf-8' (0, 0) (0, 0)
""")
self.check_tokenize('u"abc" + U"abc"', """\
STRING 'u"abc"' (1, 0) (1, 6)
OP '+' (1, 7) (1, 8)
STRING 'U"abc"' (1, 9) (1, 15)
""")
>>> dump_tokens("b'abc' + B'abc'")
ENCODING 'utf-8' (0, 0) (0, 0)
self.check_tokenize("b'abc' + B'abc'", """\
STRING "b'abc'" (1, 0) (1, 6)
OP '+' (1, 7) (1, 8)
STRING "B'abc'" (1, 9) (1, 15)
>>> dump_tokens('b"abc" + B"abc"')
ENCODING 'utf-8' (0, 0) (0, 0)
""")
self.check_tokenize('b"abc" + B"abc"', """\
STRING 'b"abc"' (1, 0) (1, 6)
OP '+' (1, 7) (1, 8)
STRING 'B"abc"' (1, 9) (1, 15)
>>> dump_tokens("br'abc' + bR'abc' + Br'abc' + BR'abc'")
ENCODING 'utf-8' (0, 0) (0, 0)
""")
self.check_tokenize("br'abc' + bR'abc' + Br'abc' + BR'abc'", """\
STRING "br'abc'" (1, 0) (1, 7)
OP '+' (1, 8) (1, 9)
STRING "bR'abc'" (1, 10) (1, 17)
......@@ -321,8 +279,8 @@ String literals
STRING "Br'abc'" (1, 20) (1, 27)
OP '+' (1, 28) (1, 29)
STRING "BR'abc'" (1, 30) (1, 37)
>>> dump_tokens('br"abc" + bR"abc" + Br"abc" + BR"abc"')
ENCODING 'utf-8' (0, 0) (0, 0)
""")
self.check_tokenize('br"abc" + bR"abc" + Br"abc" + BR"abc"', """\
STRING 'br"abc"' (1, 0) (1, 7)
OP '+' (1, 8) (1, 9)
STRING 'bR"abc"' (1, 10) (1, 17)
......@@ -330,8 +288,8 @@ String literals
STRING 'Br"abc"' (1, 20) (1, 27)
OP '+' (1, 28) (1, 29)
STRING 'BR"abc"' (1, 30) (1, 37)
>>> dump_tokens("rb'abc' + rB'abc' + Rb'abc' + RB'abc'")
ENCODING 'utf-8' (0, 0) (0, 0)
""")
self.check_tokenize("rb'abc' + rB'abc' + Rb'abc' + RB'abc'", """\
STRING "rb'abc'" (1, 0) (1, 7)
OP '+' (1, 8) (1, 9)
STRING "rB'abc'" (1, 10) (1, 17)
......@@ -339,8 +297,8 @@ String literals
STRING "Rb'abc'" (1, 20) (1, 27)
OP '+' (1, 28) (1, 29)
STRING "RB'abc'" (1, 30) (1, 37)
>>> dump_tokens('rb"abc" + rB"abc" + Rb"abc" + RB"abc"')
ENCODING 'utf-8' (0, 0) (0, 0)
""")
self.check_tokenize('rb"abc" + rB"abc" + Rb"abc" + RB"abc"', """\
STRING 'rb"abc"' (1, 0) (1, 7)
OP '+' (1, 8) (1, 9)
STRING 'rB"abc"' (1, 10) (1, 17)
......@@ -348,11 +306,10 @@ String literals
STRING 'Rb"abc"' (1, 20) (1, 27)
OP '+' (1, 28) (1, 29)
STRING 'RB"abc"' (1, 30) (1, 37)
""")
Operators
>>> dump_tokens("def d22(a, b, c=2, d=2, *k): pass")
ENCODING 'utf-8' (0, 0) (0, 0)
def test_function(self):
self.check_tokenize("def d22(a, b, c=2, d=2, *k): pass", """\
NAME 'def' (1, 0) (1, 3)
NAME 'd22' (1, 4) (1, 7)
OP '(' (1, 7) (1, 8)
......@@ -373,8 +330,8 @@ Operators
OP ')' (1, 26) (1, 27)
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)
""")
self.check_tokenize("def d01v_(a=1, *k, **w): pass", """\
NAME 'def' (1, 0) (1, 3)
NAME 'd01v_' (1, 4) (1, 9)
OP '(' (1, 9) (1, 10)
......@@ -390,12 +347,12 @@ Operators
OP ')' (1, 22) (1, 23)
OP ':' (1, 23) (1, 24)
NAME 'pass' (1, 25) (1, 29)
""")
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)
def test_comparison(self):
# Comparison
self.check_tokenize("if 1 < 1 > 1 == 1 >= 5 <= 0x15 <= 0x12 != "
"1 and 5 in 1 not in 1 is 1 or 5 is not 1: pass", """\
NAME 'if' (1, 0) (1, 2)
NUMBER '1' (1, 3) (1, 4)
OP '<' (1, 5) (1, 6)
......@@ -428,11 +385,11 @@ Comparison
NUMBER '1' (1, 81) (1, 82)
OP ':' (1, 82) (1, 83)
NAME 'pass' (1, 84) (1, 88)
""")
Shift
>>> dump_tokens("x = 1 << 1 >> 5")
ENCODING 'utf-8' (0, 0) (0, 0)
def test_shift(self):
# Shift
self.check_tokenize("x = 1 << 1 >> 5", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '1' (1, 4) (1, 5)
......@@ -440,11 +397,11 @@ Shift
NUMBER '1' (1, 9) (1, 10)
OP '>>' (1, 11) (1, 13)
NUMBER '5' (1, 14) (1, 15)
""")
Additive
>>> dump_tokens("x = 1 - y + 15 - 1 + 0x124 + z + a[5]")
ENCODING 'utf-8' (0, 0) (0, 0)
def test_additive(self):
# Additive
self.check_tokenize("x = 1 - y + 15 - 1 + 0x124 + z + a[5]", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '1' (1, 4) (1, 5)
......@@ -463,11 +420,11 @@ Additive
OP '[' (1, 34) (1, 35)
NUMBER '5' (1, 35) (1, 36)
OP ']' (1, 36) (1, 37)
""")
Multiplicative
>>> dump_tokens("x = 1//1*1/5*12%0x12")
ENCODING 'utf-8' (0, 0) (0, 0)
def test_multiplicative(self):
# Multiplicative
self.check_tokenize("x = 1//1*1/5*12%0x12", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '1' (1, 4) (1, 5)
......@@ -481,11 +438,11 @@ Multiplicative
NUMBER '12' (1, 13) (1, 15)
OP '%' (1, 15) (1, 16)
NUMBER '0x12' (1, 16) (1, 20)
""")
Unary
>>> dump_tokens("~1 ^ 1 & 1 |1 ^ -1")
ENCODING 'utf-8' (0, 0) (0, 0)
def test_unary(self):
# Unary
self.check_tokenize("~1 ^ 1 & 1 |1 ^ -1", """\
OP '~' (1, 0) (1, 1)
NUMBER '1' (1, 1) (1, 2)
OP '^' (1, 3) (1, 4)
......@@ -497,8 +454,8 @@ Unary
OP '^' (1, 14) (1, 15)
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)
""")
self.check_tokenize("-1*1/1+1*1//1 - ---1**1", """\
OP '-' (1, 0) (1, 1)
NUMBER '1' (1, 1) (1, 2)
OP '*' (1, 2) (1, 3)
......@@ -518,11 +475,11 @@ Unary
NUMBER '1' (1, 19) (1, 20)
OP '**' (1, 20) (1, 22)
NUMBER '1' (1, 22) (1, 23)
""")
Selector
>>> dump_tokens("import sys, time\\nx = sys.modules['time'].time()")
ENCODING 'utf-8' (0, 0) (0, 0)
def test_selector(self):
# Selector
self.check_tokenize("import sys, time\nx = sys.modules['time'].time()", """\
NAME 'import' (1, 0) (1, 6)
NAME 'sys' (1, 7) (1, 10)
OP ',' (1, 10) (1, 11)
......@@ -540,11 +497,11 @@ Selector
NAME 'time' (2, 24) (2, 28)
OP '(' (2, 28) (2, 29)
OP ')' (2, 29) (2, 30)
""")
Methods
>>> dump_tokens("@staticmethod\\ndef foo(x,y): pass")
ENCODING 'utf-8' (0, 0) (0, 0)
def test_method(self):
# Methods
self.check_tokenize("@staticmethod\ndef foo(x,y): pass", """\
OP '@' (1, 0) (1, 1)
NAME 'staticmethod (1, 1) (1, 13)
NEWLINE '\\n' (1, 13) (1, 14)
......@@ -557,52 +514,13 @@ Methods
OP ')' (2, 11) (2, 12)
OP ':' (2, 12) (2, 13)
NAME 'pass' (2, 14) (2, 18)
""")
Backslash means line continuation, except for comments
>>> roundtrip("x=1+\\\\n"
... "1\\n"
... "# This is a comment\\\\n"
... "# This also\\n")
True
>>> roundtrip("# Comment \\\\nx = 0")
True
Two string literals on the same line
>>> roundtrip("'' ''")
True
Test roundtrip on random python modules.
pass the '-ucpu' option to process the full directory.
>>> import random
>>> tempdir = os.path.dirname(f) or os.curdir
>>> testfiles = glob.glob(os.path.join(tempdir, "test*.py"))
Tokenize is broken on test_pep3131.py because regular expressions are
broken on the obscure unicode identifiers in it. *sigh*
With roundtrip extended to test the 5-tuple mode of untokenize,
7 more testfiles fail. Remove them also until the failure is diagnosed.
>>> testfiles.remove(os.path.join(tempdir, "test_pep3131.py"))
>>> for f in ('buffer', 'builtin', 'fileio', 'inspect', 'os', 'platform', 'sys'):
... testfiles.remove(os.path.join(tempdir, "test_%s.py") % f)
...
>>> if not support.is_resource_enabled("cpu"):
... testfiles = random.sample(testfiles, 10)
...
>>> for testfile in testfiles:
... if not roundtrip(open(testfile, 'rb')):
... print("Roundtrip failed for file %s" % testfile)
... break
... else: True
True
Evil tabs
>>> dump_tokens("def f():\\n\\tif x\\n \\tpass")
ENCODING 'utf-8' (0, 0) (0, 0)
def test_tabs(self):
# Evil tabs
self.check_tokenize("def f():\n"
"\tif x\n"
" \tpass", """\
NAME 'def' (1, 0) (1, 3)
NAME 'f' (1, 4) (1, 5)
OP '(' (1, 5) (1, 6)
......@@ -617,11 +535,11 @@ Evil tabs
NAME 'pass' (3, 9) (3, 13)
DEDENT '' (4, 0) (4, 0)
DEDENT '' (4, 0) (4, 0)
""")
Non-ascii identifiers
>>> dump_tokens("Örter = 'places'\\ngrün = 'green'")
ENCODING 'utf-8' (0, 0) (0, 0)
def test_non_ascii_identifiers(self):
# Non-ascii identifiers
self.check_tokenize("Örter = 'places'\ngrün = 'green'", """\
NAME 'Örter' (1, 0) (1, 5)
OP '=' (1, 6) (1, 7)
STRING "'places'" (1, 8) (1, 16)
......@@ -629,11 +547,11 @@ Non-ascii identifiers
NAME 'grün' (2, 0) (2, 4)
OP '=' (2, 5) (2, 6)
STRING "'green'" (2, 7) (2, 14)
""")
Legacy unicode literals:
>>> dump_tokens("Örter = u'places'\\ngrün = U'green'")
ENCODING 'utf-8' (0, 0) (0, 0)
def test_unicode(self):
# Legacy unicode literals:
self.check_tokenize("Örter = u'places'\ngrün = U'green'", """\
NAME 'Örter' (1, 0) (1, 5)
OP '=' (1, 6) (1, 7)
STRING "u'places'" (1, 8) (1, 17)
......@@ -641,89 +559,10 @@ Legacy unicode literals:
NAME 'grün' (2, 0) (2, 4)
OP '=' (2, 5) (2, 6)
STRING "U'green'" (2, 7) (2, 15)
"""
from test import support
from tokenize import (tokenize, _tokenize, untokenize, NUMBER, NAME, OP,
STRING, ENDMARKER, ENCODING, tok_name, detect_encoding,
open as tokenize_open, Untokenizer)
from io import BytesIO
from unittest import TestCase, mock
import os
import token
""")
def dump_tokens(s):
"""Print out the tokens in s in a table format.
The ENDMARKER is omitted.
"""
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(f):
"""
Test roundtrip for `untokenize`. `f` is an open file or a string.
The source code in f is tokenized to both 5- and 2-tuples.
Both sequences are converted back to source code via
tokenize.untokenize(), and the latter tokenized again to 2-tuples.
The test fails if the 3 pair tokenizations do not match.
When untokenize bugs are fixed, untokenize with 5-tuples should
reproduce code that does not contain a backslash continuation
following spaces. A proper test should test this.
This function would be more useful for correcting bugs if it reported
the first point of failure, like assertEqual, rather than just
returning False -- or if it were only used in unittests and not
doctest and actually used assertEqual.
"""
# Get source code and original tokenizations
if isinstance(f, str):
code = f.encode('utf-8')
else:
code = f.read()
f.close()
readline = iter(code.splitlines(keepends=True)).__next__
tokens5 = list(tokenize(readline))
tokens2 = [tok[:2] for tok in tokens5]
# Reproduce tokens2 from pairs
bytes_from2 = untokenize(tokens2)
readline2 = iter(bytes_from2.splitlines(keepends=True)).__next__
tokens2_from2 = [tok[:2] for tok in tokenize(readline2)]
# Reproduce tokens2 from 5-tuples
bytes_from5 = untokenize(tokens5)
readline5 = iter(bytes_from5.splitlines(keepends=True)).__next__
tokens2_from5 = [tok[:2] for tok in tokenize(readline5)]
# Compare 3 versions
return tokens2 == tokens2_from2 == tokens2_from5
# This is an example from the docs, set up as a doctest.
def decistmt(s):
"""Substitute Decimals for floats in a string of statements.
>>> from decimal import Decimal
>>> s = 'print(+21.3e-5*-.1234/81.7)'
>>> decistmt(s)
"print (+Decimal ('21.3e-5')*-Decimal ('.1234')/Decimal ('81.7'))"
The format of the exponent is inherited from the platform C library.
Known cases are "e-007" (Windows) and "e-07" (not Windows). Since
we're only showing 11 digits, and the 12th isn't close to 5, the
rest of the output should be platform-independent.
>>> exec(s) #doctest: +ELLIPSIS
-3.2171603427...e-0...7
Output from calculations with Decimal should be identical across all
platforms.
>>> exec(decistmt(s))
-3.217160342717258261933904529E-7
"""
result = []
g = tokenize(BytesIO(s.encode('utf-8')).readline) # tokenize the string
for toknum, tokval, _, _, _ in g:
......@@ -738,6 +577,28 @@ def decistmt(s):
result.append((toknum, tokval))
return untokenize(result).decode('utf-8')
class TestMisc(TestCase):
def test_decistmt(self):
# Substitute Decimals for floats in a string of statements.
# This is an example from the docs.
from decimal import Decimal
s = '+21.3e-5*-.1234/81.7'
self.assertEqual(decistmt(s),
"+Decimal ('21.3e-5')*-Decimal ('.1234')/Decimal ('81.7')")
# The format of the exponent is inherited from the platform C library.
# Known cases are "e-007" (Windows) and "e-07" (not Windows). Since
# we're only showing 11 digits, and the 12th isn't close to 5, the
# rest of the output should be platform-independent.
self.assertRegex(repr(eval(s)), '-3.2171603427[0-9]*e-0+7')
# Output from calculations with Decimal should be identical across all
# platforms.
self.assertEqual(eval(decistmt(s)),
Decimal('-3.217160342717258261933904529E-7'))
class TestTokenizerAdheresToPep0263(TestCase):
"""
......@@ -746,11 +607,11 @@ class TestTokenizerAdheresToPep0263(TestCase):
def _testFile(self, filename):
path = os.path.join(os.path.dirname(__file__), filename)
return roundtrip(open(path, 'rb'))
TestRoundtrip.check_roundtrip(self, open(path, 'rb'))
def test_utf8_coding_cookie_and_no_utf8_bom(self):
f = 'tokenize_tests-utf8-coding-cookie-and-no-utf8-bom-sig.txt'
self.assertTrue(self._testFile(f))
self._testFile(f)
def test_latin1_coding_cookie_and_utf8_bom(self):
"""
......@@ -765,11 +626,11 @@ class TestTokenizerAdheresToPep0263(TestCase):
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))
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))
self._testFile(f)
def test_bad_coding_cookie(self):
self.assertRaises(SyntaxError, self._testFile, 'bad_coding.py')
......@@ -1068,7 +929,6 @@ class TestDetectEncoding(TestCase):
self.assertTrue(m.closed)
class TestTokenize(TestCase):
def test_tokenize(self):
......@@ -1188,6 +1048,7 @@ class TestTokenize(TestCase):
# See http://bugs.python.org/issue16152
self.assertExactTypeEqual('@ ', token.AT)
class UntokenizeTest(TestCase):
def test_bad_input_order(self):
......@@ -1213,7 +1074,7 @@ class UntokenizeTest(TestCase):
u.prev_row = 2
u.add_whitespace((4, 4))
self.assertEqual(u.tokens, ['\\\n', '\\\n\\\n', ' '])
self.assertTrue(roundtrip('a\n b\n c\n \\\n c\n'))
TestRoundtrip.check_roundtrip(self, 'a\n b\n c\n \\\n c\n')
def test_iter_compat(self):
u = Untokenizer()
......@@ -1230,6 +1091,131 @@ class UntokenizeTest(TestCase):
class TestRoundtrip(TestCase):
def check_roundtrip(self, f):
"""
Test roundtrip for `untokenize`. `f` is an open file or a string.
The source code in f is tokenized to both 5- and 2-tuples.
Both sequences are converted back to source code via
tokenize.untokenize(), and the latter tokenized again to 2-tuples.
The test fails if the 3 pair tokenizations do not match.
When untokenize bugs are fixed, untokenize with 5-tuples should
reproduce code that does not contain a backslash continuation
following spaces. A proper test should test this.
"""
# Get source code and original tokenizations
if isinstance(f, str):
code = f.encode('utf-8')
else:
code = f.read()
f.close()
readline = iter(code.splitlines(keepends=True)).__next__
tokens5 = list(tokenize(readline))
tokens2 = [tok[:2] for tok in tokens5]
# Reproduce tokens2 from pairs
bytes_from2 = untokenize(tokens2)
readline2 = iter(bytes_from2.splitlines(keepends=True)).__next__
tokens2_from2 = [tok[:2] for tok in tokenize(readline2)]
self.assertEqual(tokens2_from2, tokens2)
# Reproduce tokens2 from 5-tuples
bytes_from5 = untokenize(tokens5)
readline5 = iter(bytes_from5.splitlines(keepends=True)).__next__
tokens2_from5 = [tok[:2] for tok in tokenize(readline5)]
self.assertEqual(tokens2_from5, tokens2)
def test_roundtrip(self):
# There are some standard formatting practices that are easy to get right.
self.check_roundtrip("if x == 1:\n"
" print(x)\n")
self.check_roundtrip("# This is a comment\n"
"# This also")
# 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 apparent in the expected output.
self.check_roundtrip("if x == 1 : \n"
" print(x)\n")
fn = support.findfile("tokenize_tests.txt")
with open(fn, 'rb') as f:
self.check_roundtrip(f)
self.check_roundtrip("if x == 1:\n"
" # A comment by itself.\n"
" print(x) # Comment here, too.\n"
" # Another comment.\n"
"after_if = True\n")
self.check_roundtrip("if (x # The comments need to go in the right place\n"
" == 1):\n"
" print('x==1')\n")
self.check_roundtrip("class Test: # A comment here\n"
" # A comment with weird indent\n"
" after_com = 5\n"
" def x(m): return m*5 # a one liner\n"
" def y(m): # A whitespace after the colon\n"
" return y*4 # 3-space indent\n")
# Some error-handling code
self.check_roundtrip("try: import somemodule\n"
"except ImportError: # comment\n"
" print('Can not import' # comment2\n)"
"else: print('Loaded')\n")
def test_continuation(self):
# Balancing continuation
self.check_roundtrip("a = (3,4, \n"
"5,6)\n"
"y = [3, 4,\n"
"5]\n"
"z = {'a': 5,\n"
"'b':15, 'c':True}\n"
"x = len(y) + 5 - a[\n"
"3] - a[2]\n"
"+ len(z) - z[\n"
"'b']\n")
def test_backslash_continuation(self):
# Backslash means line continuation, except for comments
self.check_roundtrip("x=1+\\\n"
"1\n"
"# This is a comment\\\n"
"# This also\n")
self.check_roundtrip("# Comment \\\n"
"x = 0")
def test_string_concatenation(self):
# Two string literals on the same line
self.check_roundtrip("'' ''")
def test_random_files(self):
# Test roundtrip on random python modules.
# pass the '-ucpu' option to process the full directory.
import glob, random
fn = support.findfile("tokenize_tests.txt")
tempdir = os.path.dirname(fn) or os.curdir
testfiles = glob.glob(os.path.join(tempdir, "test*.py"))
# Tokenize is broken on test_pep3131.py because regular expressions are
# broken on the obscure unicode identifiers in it. *sigh*
# With roundtrip extended to test the 5-tuple mode of untokenize,
# 7 more testfiles fail. Remove them also until the failure is diagnosed.
testfiles.remove(os.path.join(tempdir, "test_pep3131.py"))
for f in ('buffer', 'builtin', 'fileio', 'inspect', 'os', 'platform', 'sys'):
testfiles.remove(os.path.join(tempdir, "test_%s.py") % f)
if not support.is_resource_enabled("cpu"):
testfiles = random.sample(testfiles, 10)
for testfile in testfiles:
with open(testfile, 'rb') as f:
with self.subTest(file=testfile):
self.check_roundtrip(f)
def roundtrip(self, code):
if isinstance(code, str):
code = code.encode('utf-8')
......@@ -1243,19 +1229,8 @@ class TestRoundtrip(TestCase):
code = "if False:\n\tx=3\n\tx=3\n"
codelines = self.roundtrip(code).split('\n')
self.assertEqual(codelines[1], codelines[2])
self.check_roundtrip(code)
__test__ = {"doctests" : doctests, 'decistmt': decistmt}
def test_main():
from test import test_tokenize
support.run_doctest(test_tokenize, True)
support.run_unittest(TestTokenizerAdheresToPep0263)
support.run_unittest(Test_Tokenize)
support.run_unittest(TestDetectEncoding)
support.run_unittest(TestTokenize)
support.run_unittest(UntokenizeTest)
support.run_unittest(TestRoundtrip)
if __name__ == "__main__":
test_main()
unittest.main()
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