| from test import support |
| from test.support import os_helper |
| from tokenize import (tokenize, _tokenize, untokenize, NUMBER, NAME, OP, |
| STRING, ENDMARKER, ENCODING, tok_name, detect_encoding, |
| open as tokenize_open, Untokenizer, generate_tokens, |
| NEWLINE) |
| from io import BytesIO, StringIO |
| import unittest |
| from unittest import TestCase, mock |
| from test.test_grammar import (VALID_UNDERSCORE_LITERALS, |
| INVALID_UNDERSCORE_LITERALS) |
| import os |
| import token |
| |
| |
| # Converts a source string into a list of textual representation |
| # of the tokens such as: |
| # ` NAME 'if' (1, 0) (1, 2)` |
| # to make writing tests easier. |
| def stringify_tokens_from_source(token_generator, source_string): |
| result = [] |
| num_lines = len(source_string.splitlines()) |
| missing_trailing_nl = source_string[-1] not in '\r\n' |
| |
| for type, token, start, end, line in token_generator: |
| if type == ENDMARKER: |
| break |
| # Ignore the new line on the last line if the input lacks one |
| if missing_trailing_nl and type == NEWLINE and end[0] == num_lines: |
| continue |
| type = tok_name[type] |
| result.append(f" {type:10} {token!r:13} {start} {end}") |
| |
| return result |
| |
| 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, ENCODING and |
| # final NEWLINE are omitted for brevity. |
| |
| def check_tokenize(self, s, expected): |
| # Format the tokens in s in a table format. |
| # The ENDMARKER and final NEWLINE are omitted. |
| f = BytesIO(s.encode('utf-8')) |
| result = stringify_tokens_from_source(tokenize(f.readline), s) |
| |
| self.assertEqual(result, |
| [" ENCODING 'utf-8' (0, 0) (0, 0)"] + |
| expected.rstrip().splitlines()) |
| |
| def test_implicit_newline(self): |
| # Make sure that the tokenizer puts in an implicit NEWLINE |
| # when the input lacks a trailing new line. |
| f = BytesIO("x".encode('utf-8')) |
| tokens = list(tokenize(f.readline)) |
| self.assertEqual(tokens[-2].type, NEWLINE) |
| self.assertEqual(tokens[-1].type, ENDMARKER) |
| |
| 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) |
| """) |
| self.check_tokenize("if False:\n" |
| " # NL\n" |
| " \n" |
| " True = False # NEWLINE\n", """\ |
| NAME 'if' (1, 0) (1, 2) |
| NAME 'False' (1, 3) (1, 8) |
| OP ':' (1, 8) (1, 9) |
| NEWLINE '\\n' (1, 9) (1, 10) |
| COMMENT '# NL' (2, 4) (2, 8) |
| NL '\\n' (2, 8) (2, 9) |
| NL '\\n' (3, 4) (3, 5) |
| INDENT ' ' (4, 0) (4, 4) |
| NAME 'True' (4, 4) (4, 8) |
| OP '=' (4, 9) (4, 10) |
| NAME 'False' (4, 11) (4, 16) |
| COMMENT '# NEWLINE' (4, 17) (4, 26) |
| NEWLINE '\\n' (4, 26) (4, 27) |
| DEDENT '' (5, 0) (5, 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) |
| """) |
| self.check_tokenize("0b10 <= 255", """\ |
| NUMBER '0b10' (1, 0) (1, 4) |
| OP '<=' (1, 5) (1, 7) |
| NUMBER '255' (1, 8) (1, 11) |
| """) |
| self.check_tokenize("0o123 <= 0O123", """\ |
| NUMBER '0o123' (1, 0) (1, 5) |
| OP '<=' (1, 6) (1, 8) |
| NUMBER '0O123' (1, 9) (1, 14) |
| """) |
| 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) |
| """) |
| self.check_tokenize("2134568 != 1231515", """\ |
| NUMBER '2134568' (1, 0) (1, 7) |
| OP '!=' (1, 8) (1, 10) |
| NUMBER '1231515' (1, 11) (1, 18) |
| """) |
| self.check_tokenize("(-124561-1) & 200000000", """\ |
| OP '(' (1, 0) (1, 1) |
| OP '-' (1, 1) (1, 2) |
| NUMBER '124561' (1, 2) (1, 8) |
| OP '-' (1, 8) (1, 9) |
| NUMBER '1' (1, 9) (1, 10) |
| OP ')' (1, 10) (1, 11) |
| OP '&' (1, 12) (1, 13) |
| NUMBER '200000000' (1, 14) (1, 23) |
| """) |
| 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) |
| """) |
| self.check_tokenize("0xdeadc0de & 12345", """\ |
| NUMBER '0xdeadc0de' (1, 0) (1, 10) |
| OP '&' (1, 11) (1, 12) |
| NUMBER '12345' (1, 13) (1, 18) |
| """) |
| 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) |
| """) |
| |
| 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) |
| """) |
| self.check_tokenize("x = 0xfffffffffff", """\ |
| NAME 'x' (1, 0) (1, 1) |
| OP '=' (1, 2) (1, 3) |
| NUMBER '0xfffffffffff' (1, 4) (1, 17) |
| """) |
| self.check_tokenize("x = 123141242151251616110", """\ |
| NAME 'x' (1, 0) (1, 1) |
| OP '=' (1, 2) (1, 3) |
| NUMBER '123141242151251616110' (1, 4) (1, 25) |
| """) |
| self.check_tokenize("x = -15921590215012591", """\ |
| NAME 'x' (1, 0) (1, 1) |
| OP '=' (1, 2) (1, 3) |
| OP '-' (1, 4) (1, 5) |
| NUMBER '15921590215012591' (1, 5) (1, 22) |
| """) |
| |
| 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) |
| """) |
| self.check_tokenize("x = 314159.", """\ |
| NAME 'x' (1, 0) (1, 1) |
| OP '=' (1, 2) (1, 3) |
| NUMBER '314159.' (1, 4) (1, 11) |
| """) |
| self.check_tokenize("x = .314159", """\ |
| NAME 'x' (1, 0) (1, 1) |
| OP '=' (1, 2) (1, 3) |
| NUMBER '.314159' (1, 4) (1, 11) |
| """) |
| self.check_tokenize("x = 3e14159", """\ |
| NAME 'x' (1, 0) (1, 1) |
| OP '=' (1, 2) (1, 3) |
| NUMBER '3e14159' (1, 4) (1, 11) |
| """) |
| self.check_tokenize("x = 3E123", """\ |
| NAME 'x' (1, 0) (1, 1) |
| OP '=' (1, 2) (1, 3) |
| NUMBER '3E123' (1, 4) (1, 9) |
| """) |
| 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) |
| """) |
| self.check_tokenize("x = 3.14e159", """\ |
| NAME 'x' (1, 0) (1, 1) |
| OP '=' (1, 2) (1, 3) |
| NUMBER '3.14e159' (1, 4) (1, 12) |
| """) |
| |
| def test_underscore_literals(self): |
| def number_token(s): |
| f = BytesIO(s.encode('utf-8')) |
| for toktype, token, start, end, line in tokenize(f.readline): |
| if toktype == NUMBER: |
| return token |
| return 'invalid token' |
| for lit in VALID_UNDERSCORE_LITERALS: |
| if '(' in lit: |
| # this won't work with compound complex inputs |
| continue |
| self.assertEqual(number_token(lit), lit) |
| for lit in INVALID_UNDERSCORE_LITERALS: |
| self.assertNotEqual(number_token(lit), lit) |
| |
| 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) |
| OP ';' (1, 6) (1, 7) |
| NAME 'y' (1, 8) (1, 9) |
| OP '=' (1, 10) (1, 11) |
| STRING '""' (1, 12) (1, 14) |
| """) |
| self.check_tokenize("x = '\"'; y = \"'\"", """\ |
| NAME 'x' (1, 0) (1, 1) |
| OP '=' (1, 2) (1, 3) |
| STRING '\\'"\\'' (1, 4) (1, 7) |
| OP ';' (1, 7) (1, 8) |
| NAME 'y' (1, 9) (1, 10) |
| OP '=' (1, 11) (1, 12) |
| STRING '"\\'"' (1, 13) (1, 16) |
| """) |
| 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) |
| """) |
| 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) |
| """) |
| 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) |
| """) |
| 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) |
| OP '+' (1, 11) (1, 12) |
| STRING "r'ABC'" (1, 13) (1, 19) |
| OP '+' (1, 20) (1, 21) |
| STRING "R'ABC'" (1, 22) (1, 28) |
| OP '+' (1, 29) (1, 30) |
| STRING "R'ABC'" (1, 31) (1, 37) |
| """) |
| 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) |
| OP '+' (1, 11) (1, 12) |
| STRING 'r"ABC"' (1, 13) (1, 19) |
| OP '+' (1, 20) (1, 21) |
| STRING 'R"ABC"' (1, 22) (1, 28) |
| OP '+' (1, 29) (1, 30) |
| STRING 'R"ABC"' (1, 31) (1, 37) |
| """) |
| |
| 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) |
| """) |
| 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) |
| """) |
| |
| 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) |
| """) |
| 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) |
| """) |
| 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) |
| OP '+' (1, 18) (1, 19) |
| STRING "Br'abc'" (1, 20) (1, 27) |
| OP '+' (1, 28) (1, 29) |
| STRING "BR'abc'" (1, 30) (1, 37) |
| """) |
| 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) |
| OP '+' (1, 18) (1, 19) |
| STRING 'Br"abc"' (1, 20) (1, 27) |
| OP '+' (1, 28) (1, 29) |
| STRING 'BR"abc"' (1, 30) (1, 37) |
| """) |
| 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) |
| OP '+' (1, 18) (1, 19) |
| STRING "Rb'abc'" (1, 20) (1, 27) |
| OP '+' (1, 28) (1, 29) |
| STRING "RB'abc'" (1, 30) (1, 37) |
| """) |
| 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) |
| OP '+' (1, 18) (1, 19) |
| STRING 'Rb"abc"' (1, 20) (1, 27) |
| OP '+' (1, 28) (1, 29) |
| STRING 'RB"abc"' (1, 30) (1, 37) |
| """) |
| # Check 0, 1, and 2 character string prefixes. |
| self.check_tokenize(r'"a\ |
| de\ |
| fg"', """\ |
| STRING '"a\\\\\\nde\\\\\\nfg"\' (1, 0) (3, 3) |
| """) |
| self.check_tokenize(r'u"a\ |
| de"', """\ |
| STRING 'u"a\\\\\\nde"\' (1, 0) (2, 3) |
| """) |
| self.check_tokenize(r'rb"a\ |
| d"', """\ |
| STRING 'rb"a\\\\\\nd"\' (1, 0) (2, 2) |
| """) |
| self.check_tokenize(r'"""a\ |
| b"""', """\ |
| STRING '\"\""a\\\\\\nb\"\""' (1, 0) (2, 4) |
| """) |
| self.check_tokenize(r'u"""a\ |
| b"""', """\ |
| STRING 'u\"\""a\\\\\\nb\"\""' (1, 0) (2, 4) |
| """) |
| self.check_tokenize(r'rb"""a\ |
| b\ |
| c"""', """\ |
| STRING 'rb"\""a\\\\\\nb\\\\\\nc"\""' (1, 0) (3, 4) |
| """) |
| self.check_tokenize('f"abc"', """\ |
| STRING 'f"abc"' (1, 0) (1, 6) |
| """) |
| self.check_tokenize('fR"a{b}c"', """\ |
| STRING 'fR"a{b}c"' (1, 0) (1, 9) |
| """) |
| self.check_tokenize('f"""abc"""', """\ |
| STRING 'f\"\"\"abc\"\"\"' (1, 0) (1, 10) |
| """) |
| self.check_tokenize(r'f"abc\ |
| def"', """\ |
| STRING 'f"abc\\\\\\ndef"' (1, 0) (2, 4) |
| """) |
| self.check_tokenize(r'Rf"abc\ |
| def"', """\ |
| STRING 'Rf"abc\\\\\\ndef"' (1, 0) (2, 4) |
| """) |
| |
| 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) |
| NAME 'a' (1, 8) (1, 9) |
| OP ',' (1, 9) (1, 10) |
| NAME 'b' (1, 11) (1, 12) |
| OP ',' (1, 12) (1, 13) |
| NAME 'c' (1, 14) (1, 15) |
| OP '=' (1, 15) (1, 16) |
| NUMBER '2' (1, 16) (1, 17) |
| OP ',' (1, 17) (1, 18) |
| NAME 'd' (1, 19) (1, 20) |
| OP '=' (1, 20) (1, 21) |
| NUMBER '2' (1, 21) (1, 22) |
| OP ',' (1, 22) (1, 23) |
| OP '*' (1, 24) (1, 25) |
| NAME 'k' (1, 25) (1, 26) |
| OP ')' (1, 26) (1, 27) |
| OP ':' (1, 27) (1, 28) |
| NAME 'pass' (1, 29) (1, 33) |
| """) |
| 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) |
| NAME 'a' (1, 10) (1, 11) |
| OP '=' (1, 11) (1, 12) |
| NUMBER '1' (1, 12) (1, 13) |
| OP ',' (1, 13) (1, 14) |
| OP '*' (1, 15) (1, 16) |
| NAME 'k' (1, 16) (1, 17) |
| OP ',' (1, 17) (1, 18) |
| OP '**' (1, 19) (1, 21) |
| NAME 'w' (1, 21) (1, 22) |
| OP ')' (1, 22) (1, 23) |
| OP ':' (1, 23) (1, 24) |
| NAME 'pass' (1, 25) (1, 29) |
| """) |
| self.check_tokenize("def d23(a: str, b: int=3) -> int: pass", """\ |
| NAME 'def' (1, 0) (1, 3) |
| NAME 'd23' (1, 4) (1, 7) |
| OP '(' (1, 7) (1, 8) |
| NAME 'a' (1, 8) (1, 9) |
| OP ':' (1, 9) (1, 10) |
| NAME 'str' (1, 11) (1, 14) |
| OP ',' (1, 14) (1, 15) |
| NAME 'b' (1, 16) (1, 17) |
| OP ':' (1, 17) (1, 18) |
| NAME 'int' (1, 19) (1, 22) |
| OP '=' (1, 22) (1, 23) |
| NUMBER '3' (1, 23) (1, 24) |
| OP ')' (1, 24) (1, 25) |
| OP '->' (1, 26) (1, 28) |
| NAME 'int' (1, 29) (1, 32) |
| OP ':' (1, 32) (1, 33) |
| NAME 'pass' (1, 34) (1, 38) |
| """) |
| |
| 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) |
| NUMBER '1' (1, 7) (1, 8) |
| OP '>' (1, 9) (1, 10) |
| NUMBER '1' (1, 11) (1, 12) |
| OP '==' (1, 13) (1, 15) |
| NUMBER '1' (1, 16) (1, 17) |
| OP '>=' (1, 18) (1, 20) |
| NUMBER '5' (1, 21) (1, 22) |
| OP '<=' (1, 23) (1, 25) |
| NUMBER '0x15' (1, 26) (1, 30) |
| OP '<=' (1, 31) (1, 33) |
| NUMBER '0x12' (1, 34) (1, 38) |
| OP '!=' (1, 39) (1, 41) |
| NUMBER '1' (1, 42) (1, 43) |
| NAME 'and' (1, 44) (1, 47) |
| NUMBER '5' (1, 48) (1, 49) |
| NAME 'in' (1, 50) (1, 52) |
| NUMBER '1' (1, 53) (1, 54) |
| NAME 'not' (1, 55) (1, 58) |
| NAME 'in' (1, 59) (1, 61) |
| NUMBER '1' (1, 62) (1, 63) |
| NAME 'is' (1, 64) (1, 66) |
| NUMBER '1' (1, 67) (1, 68) |
| NAME 'or' (1, 69) (1, 71) |
| NUMBER '5' (1, 72) (1, 73) |
| NAME 'is' (1, 74) (1, 76) |
| NAME 'not' (1, 77) (1, 80) |
| NUMBER '1' (1, 81) (1, 82) |
| OP ':' (1, 82) (1, 83) |
| NAME 'pass' (1, 84) (1, 88) |
| """) |
| |
| 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) |
| OP '<<' (1, 6) (1, 8) |
| NUMBER '1' (1, 9) (1, 10) |
| OP '>>' (1, 11) (1, 13) |
| NUMBER '5' (1, 14) (1, 15) |
| """) |
| |
| 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) |
| OP '-' (1, 6) (1, 7) |
| NAME 'y' (1, 8) (1, 9) |
| OP '+' (1, 10) (1, 11) |
| NUMBER '15' (1, 12) (1, 14) |
| OP '-' (1, 15) (1, 16) |
| NUMBER '1' (1, 17) (1, 18) |
| OP '+' (1, 19) (1, 20) |
| NUMBER '0x124' (1, 21) (1, 26) |
| OP '+' (1, 27) (1, 28) |
| NAME 'z' (1, 29) (1, 30) |
| OP '+' (1, 31) (1, 32) |
| NAME 'a' (1, 33) (1, 34) |
| OP '[' (1, 34) (1, 35) |
| NUMBER '5' (1, 35) (1, 36) |
| OP ']' (1, 36) (1, 37) |
| """) |
| |
| def test_multiplicative(self): |
| # Multiplicative |
| self.check_tokenize("x = 1//1*1/5*12%0x12@42", """\ |
| NAME 'x' (1, 0) (1, 1) |
| OP '=' (1, 2) (1, 3) |
| NUMBER '1' (1, 4) (1, 5) |
| OP '//' (1, 5) (1, 7) |
| NUMBER '1' (1, 7) (1, 8) |
| OP '*' (1, 8) (1, 9) |
| NUMBER '1' (1, 9) (1, 10) |
| OP '/' (1, 10) (1, 11) |
| NUMBER '5' (1, 11) (1, 12) |
| OP '*' (1, 12) (1, 13) |
| NUMBER '12' (1, 13) (1, 15) |
| OP '%' (1, 15) (1, 16) |
| NUMBER '0x12' (1, 16) (1, 20) |
| OP '@' (1, 20) (1, 21) |
| NUMBER '42' (1, 21) (1, 23) |
| """) |
| |
| 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) |
| NUMBER '1' (1, 5) (1, 6) |
| OP '&' (1, 7) (1, 8) |
| NUMBER '1' (1, 9) (1, 10) |
| OP '|' (1, 11) (1, 12) |
| NUMBER '1' (1, 12) (1, 13) |
| OP '^' (1, 14) (1, 15) |
| OP '-' (1, 16) (1, 17) |
| NUMBER '1' (1, 17) (1, 18) |
| """) |
| 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) |
| NUMBER '1' (1, 3) (1, 4) |
| OP '/' (1, 4) (1, 5) |
| NUMBER '1' (1, 5) (1, 6) |
| OP '+' (1, 6) (1, 7) |
| NUMBER '1' (1, 7) (1, 8) |
| OP '*' (1, 8) (1, 9) |
| NUMBER '1' (1, 9) (1, 10) |
| OP '//' (1, 10) (1, 12) |
| NUMBER '1' (1, 12) (1, 13) |
| OP '-' (1, 14) (1, 15) |
| OP '-' (1, 16) (1, 17) |
| OP '-' (1, 17) (1, 18) |
| OP '-' (1, 18) (1, 19) |
| NUMBER '1' (1, 19) (1, 20) |
| OP '**' (1, 20) (1, 22) |
| NUMBER '1' (1, 22) (1, 23) |
| """) |
| |
| 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) |
| NAME 'time' (1, 12) (1, 16) |
| NEWLINE '\\n' (1, 16) (1, 17) |
| NAME 'x' (2, 0) (2, 1) |
| OP '=' (2, 2) (2, 3) |
| NAME 'sys' (2, 4) (2, 7) |
| OP '.' (2, 7) (2, 8) |
| NAME 'modules' (2, 8) (2, 15) |
| OP '[' (2, 15) (2, 16) |
| STRING "'time'" (2, 16) (2, 22) |
| OP ']' (2, 22) (2, 23) |
| OP '.' (2, 23) (2, 24) |
| NAME 'time' (2, 24) (2, 28) |
| OP '(' (2, 28) (2, 29) |
| OP ')' (2, 29) (2, 30) |
| """) |
| |
| 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) |
| NAME 'def' (2, 0) (2, 3) |
| NAME 'foo' (2, 4) (2, 7) |
| OP '(' (2, 7) (2, 8) |
| NAME 'x' (2, 8) (2, 9) |
| OP ',' (2, 9) (2, 10) |
| NAME 'y' (2, 10) (2, 11) |
| OP ')' (2, 11) (2, 12) |
| OP ':' (2, 12) (2, 13) |
| NAME 'pass' (2, 14) (2, 18) |
| """) |
| |
| 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) |
| OP ')' (1, 6) (1, 7) |
| OP ':' (1, 7) (1, 8) |
| NEWLINE '\\n' (1, 8) (1, 9) |
| INDENT '\\t' (2, 0) (2, 1) |
| NAME 'if' (2, 1) (2, 3) |
| NAME 'x' (2, 4) (2, 5) |
| NEWLINE '\\n' (2, 5) (2, 6) |
| INDENT ' \\t' (3, 0) (3, 9) |
| NAME 'pass' (3, 9) (3, 13) |
| DEDENT '' (4, 0) (4, 0) |
| DEDENT '' (4, 0) (4, 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) |
| NEWLINE '\\n' (1, 16) (1, 17) |
| NAME 'grün' (2, 0) (2, 4) |
| OP '=' (2, 5) (2, 6) |
| STRING "'green'" (2, 7) (2, 14) |
| """) |
| |
| 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) |
| NEWLINE '\\n' (1, 17) (1, 18) |
| NAME 'grün' (2, 0) (2, 4) |
| OP '=' (2, 5) (2, 6) |
| STRING "U'green'" (2, 7) (2, 15) |
| """) |
| |
| def test_async(self): |
| # Async/await extension: |
| self.check_tokenize("async = 1", """\ |
| NAME 'async' (1, 0) (1, 5) |
| OP '=' (1, 6) (1, 7) |
| NUMBER '1' (1, 8) (1, 9) |
| """) |
| |
| self.check_tokenize("a = (async = 1)", """\ |
| NAME 'a' (1, 0) (1, 1) |
| OP '=' (1, 2) (1, 3) |
| OP '(' (1, 4) (1, 5) |
| NAME 'async' (1, 5) (1, 10) |
| OP '=' (1, 11) (1, 12) |
| NUMBER '1' (1, 13) (1, 14) |
| OP ')' (1, 14) (1, 15) |
| """) |
| |
| self.check_tokenize("async()", """\ |
| NAME 'async' (1, 0) (1, 5) |
| OP '(' (1, 5) (1, 6) |
| OP ')' (1, 6) (1, 7) |
| """) |
| |
| self.check_tokenize("class async(Bar):pass", """\ |
| NAME 'class' (1, 0) (1, 5) |
| NAME 'async' (1, 6) (1, 11) |
| OP '(' (1, 11) (1, 12) |
| NAME 'Bar' (1, 12) (1, 15) |
| OP ')' (1, 15) (1, 16) |
| OP ':' (1, 16) (1, 17) |
| NAME 'pass' (1, 17) (1, 21) |
| """) |
| |
| self.check_tokenize("class async:pass", """\ |
| NAME 'class' (1, 0) (1, 5) |
| NAME 'async' (1, 6) (1, 11) |
| OP ':' (1, 11) (1, 12) |
| NAME 'pass' (1, 12) (1, 16) |
| """) |
| |
| self.check_tokenize("await = 1", """\ |
| NAME 'await' (1, 0) (1, 5) |
| OP '=' (1, 6) (1, 7) |
| NUMBER '1' (1, 8) (1, 9) |
| """) |
| |
| self.check_tokenize("foo.async", """\ |
| NAME 'foo' (1, 0) (1, 3) |
| OP '.' (1, 3) (1, 4) |
| NAME 'async' (1, 4) (1, 9) |
| """) |
| |
| self.check_tokenize("async for a in b: pass", """\ |
| NAME 'async' (1, 0) (1, 5) |
| NAME 'for' (1, 6) (1, 9) |
| NAME 'a' (1, 10) (1, 11) |
| NAME 'in' (1, 12) (1, 14) |
| NAME 'b' (1, 15) (1, 16) |
| OP ':' (1, 16) (1, 17) |
| NAME 'pass' (1, 18) (1, 22) |
| """) |
| |
| self.check_tokenize("async with a as b: pass", """\ |
| NAME 'async' (1, 0) (1, 5) |
| NAME 'with' (1, 6) (1, 10) |
| NAME 'a' (1, 11) (1, 12) |
| NAME 'as' (1, 13) (1, 15) |
| NAME 'b' (1, 16) (1, 17) |
| OP ':' (1, 17) (1, 18) |
| NAME 'pass' (1, 19) (1, 23) |
| """) |
| |
| self.check_tokenize("async.foo", """\ |
| NAME 'async' (1, 0) (1, 5) |
| OP '.' (1, 5) (1, 6) |
| NAME 'foo' (1, 6) (1, 9) |
| """) |
| |
| self.check_tokenize("async", """\ |
| NAME 'async' (1, 0) (1, 5) |
| """) |
| |
| self.check_tokenize("async\n#comment\nawait", """\ |
| NAME 'async' (1, 0) (1, 5) |
| NEWLINE '\\n' (1, 5) (1, 6) |
| COMMENT '#comment' (2, 0) (2, 8) |
| NL '\\n' (2, 8) (2, 9) |
| NAME 'await' (3, 0) (3, 5) |
| """) |
| |
| self.check_tokenize("async\n...\nawait", """\ |
| NAME 'async' (1, 0) (1, 5) |
| NEWLINE '\\n' (1, 5) (1, 6) |
| OP '...' (2, 0) (2, 3) |
| NEWLINE '\\n' (2, 3) (2, 4) |
| NAME 'await' (3, 0) (3, 5) |
| """) |
| |
| self.check_tokenize("async\nawait", """\ |
| NAME 'async' (1, 0) (1, 5) |
| NEWLINE '\\n' (1, 5) (1, 6) |
| NAME 'await' (2, 0) (2, 5) |
| """) |
| |
| self.check_tokenize("foo.async + 1", """\ |
| NAME 'foo' (1, 0) (1, 3) |
| OP '.' (1, 3) (1, 4) |
| NAME 'async' (1, 4) (1, 9) |
| OP '+' (1, 10) (1, 11) |
| NUMBER '1' (1, 12) (1, 13) |
| """) |
| |
| self.check_tokenize("async def foo(): pass", """\ |
| NAME 'async' (1, 0) (1, 5) |
| NAME 'def' (1, 6) (1, 9) |
| NAME 'foo' (1, 10) (1, 13) |
| OP '(' (1, 13) (1, 14) |
| OP ')' (1, 14) (1, 15) |
| OP ':' (1, 15) (1, 16) |
| NAME 'pass' (1, 17) (1, 21) |
| """) |
| |
| self.check_tokenize('''\ |
| async def foo(): |
| def foo(await): |
| await = 1 |
| if 1: |
| await |
| async += 1 |
| ''', """\ |
| NAME 'async' (1, 0) (1, 5) |
| NAME 'def' (1, 6) (1, 9) |
| NAME 'foo' (1, 10) (1, 13) |
| OP '(' (1, 13) (1, 14) |
| OP ')' (1, 14) (1, 15) |
| OP ':' (1, 15) (1, 16) |
| NEWLINE '\\n' (1, 16) (1, 17) |
| INDENT ' ' (2, 0) (2, 2) |
| NAME 'def' (2, 2) (2, 5) |
| NAME 'foo' (2, 6) (2, 9) |
| OP '(' (2, 9) (2, 10) |
| NAME 'await' (2, 10) (2, 15) |
| OP ')' (2, 15) (2, 16) |
| OP ':' (2, 16) (2, 17) |
| NEWLINE '\\n' (2, 17) (2, 18) |
| INDENT ' ' (3, 0) (3, 4) |
| NAME 'await' (3, 4) (3, 9) |
| OP '=' (3, 10) (3, 11) |
| NUMBER '1' (3, 12) (3, 13) |
| NEWLINE '\\n' (3, 13) (3, 14) |
| DEDENT '' (4, 2) (4, 2) |
| NAME 'if' (4, 2) (4, 4) |
| NUMBER '1' (4, 5) (4, 6) |
| OP ':' (4, 6) (4, 7) |
| NEWLINE '\\n' (4, 7) (4, 8) |
| INDENT ' ' (5, 0) (5, 4) |
| NAME 'await' (5, 4) (5, 9) |
| NEWLINE '\\n' (5, 9) (5, 10) |
| DEDENT '' (6, 0) (6, 0) |
| DEDENT '' (6, 0) (6, 0) |
| NAME 'async' (6, 0) (6, 5) |
| OP '+=' (6, 6) (6, 8) |
| NUMBER '1' (6, 9) (6, 10) |
| NEWLINE '\\n' (6, 10) (6, 11) |
| """) |
| |
| self.check_tokenize('''\ |
| async def foo(): |
| async for i in 1: pass''', """\ |
| NAME 'async' (1, 0) (1, 5) |
| NAME 'def' (1, 6) (1, 9) |
| NAME 'foo' (1, 10) (1, 13) |
| OP '(' (1, 13) (1, 14) |
| OP ')' (1, 14) (1, 15) |
| OP ':' (1, 15) (1, 16) |
| NEWLINE '\\n' (1, 16) (1, 17) |
| INDENT ' ' (2, 0) (2, 2) |
| NAME 'async' (2, 2) (2, 7) |
| NAME 'for' (2, 8) (2, 11) |
| NAME 'i' (2, 12) (2, 13) |
| NAME 'in' (2, 14) (2, 16) |
| NUMBER '1' (2, 17) (2, 18) |
| OP ':' (2, 18) (2, 19) |
| NAME 'pass' (2, 20) (2, 24) |
| DEDENT '' (3, 0) (3, 0) |
| """) |
| |
| self.check_tokenize('''async def foo(async): await''', """\ |
| NAME 'async' (1, 0) (1, 5) |
| NAME 'def' (1, 6) (1, 9) |
| NAME 'foo' (1, 10) (1, 13) |
| OP '(' (1, 13) (1, 14) |
| NAME 'async' (1, 14) (1, 19) |
| OP ')' (1, 19) (1, 20) |
| OP ':' (1, 20) (1, 21) |
| NAME 'await' (1, 22) (1, 27) |
| """) |
| |
| self.check_tokenize('''\ |
| def f(): |
| |
| def baz(): pass |
| async def bar(): pass |
| |
| await = 2''', """\ |
| NAME 'def' (1, 0) (1, 3) |
| NAME 'f' (1, 4) (1, 5) |
| OP '(' (1, 5) (1, 6) |
| OP ')' (1, 6) (1, 7) |
| OP ':' (1, 7) (1, 8) |
| NEWLINE '\\n' (1, 8) (1, 9) |
| NL '\\n' (2, 0) (2, 1) |
| INDENT ' ' (3, 0) (3, 2) |
| NAME 'def' (3, 2) (3, 5) |
| NAME 'baz' (3, 6) (3, 9) |
| OP '(' (3, 9) (3, 10) |
| OP ')' (3, 10) (3, 11) |
| OP ':' (3, 11) (3, 12) |
| NAME 'pass' (3, 13) (3, 17) |
| NEWLINE '\\n' (3, 17) (3, 18) |
| NAME 'async' (4, 2) (4, 7) |
| NAME 'def' (4, 8) (4, 11) |
| NAME 'bar' (4, 12) (4, 15) |
| OP '(' (4, 15) (4, 16) |
| OP ')' (4, 16) (4, 17) |
| OP ':' (4, 17) (4, 18) |
| NAME 'pass' (4, 19) (4, 23) |
| NEWLINE '\\n' (4, 23) (4, 24) |
| NL '\\n' (5, 0) (5, 1) |
| NAME 'await' (6, 2) (6, 7) |
| OP '=' (6, 8) (6, 9) |
| NUMBER '2' (6, 10) (6, 11) |
| DEDENT '' (7, 0) (7, 0) |
| """) |
| |
| self.check_tokenize('''\ |
| async def f(): |
| |
| def baz(): pass |
| async def bar(): pass |
| |
| await = 2''', """\ |
| NAME 'async' (1, 0) (1, 5) |
| NAME 'def' (1, 6) (1, 9) |
| NAME 'f' (1, 10) (1, 11) |
| OP '(' (1, 11) (1, 12) |
| OP ')' (1, 12) (1, 13) |
| OP ':' (1, 13) (1, 14) |
| NEWLINE '\\n' (1, 14) (1, 15) |
| NL '\\n' (2, 0) (2, 1) |
| INDENT ' ' (3, 0) (3, 2) |
| NAME 'def' (3, 2) (3, 5) |
| NAME 'baz' (3, 6) (3, 9) |
| OP '(' (3, 9) (3, 10) |
| OP ')' (3, 10) (3, 11) |
| OP ':' (3, 11) (3, 12) |
| NAME 'pass' (3, 13) (3, 17) |
| NEWLINE '\\n' (3, 17) (3, 18) |
| NAME 'async' (4, 2) (4, 7) |
| NAME 'def' (4, 8) (4, 11) |
| NAME 'bar' (4, 12) (4, 15) |
| OP '(' (4, 15) (4, 16) |
| OP ')' (4, 16) (4, 17) |
| OP ':' (4, 17) (4, 18) |
| NAME 'pass' (4, 19) (4, 23) |
| NEWLINE '\\n' (4, 23) (4, 24) |
| NL '\\n' (5, 0) (5, 1) |
| NAME 'await' (6, 2) (6, 7) |
| OP '=' (6, 8) (6, 9) |
| NUMBER '2' (6, 10) (6, 11) |
| DEDENT '' (7, 0) (7, 0) |
| """) |
| |
| class GenerateTokensTest(TokenizeTest): |
| def check_tokenize(self, s, expected): |
| # Format the tokens in s in a table format. |
| # The ENDMARKER and final NEWLINE are omitted. |
| f = StringIO(s) |
| result = stringify_tokens_from_source(generate_tokens(f.readline), s) |
| self.assertEqual(result, expected.rstrip().splitlines()) |
| |
| |
| def decistmt(s): |
| result = [] |
| 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([ |
| (NAME, 'Decimal'), |
| (OP, '('), |
| (STRING, repr(tokval)), |
| (OP, ')') |
| ]) |
| else: |
| 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): |
| """ |
| 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) |
| 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._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.assertRaises(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._testFile(f) |
| |
| def test_utf8_coding_cookie_and_utf8_bom(self): |
| f = 'tokenize_tests-utf8-coding-cookie-and-utf8-bom-sig.txt' |
| self._testFile(f) |
| |
| def test_bad_coding_cookie(self): |
| self.assertRaises(SyntaxError, self._testFile, 'bad_coding.py') |
| self.assertRaises(SyntaxError, self._testFile, 'bad_coding2.py') |
| |
| |
| 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 tokens |
| tokens = list(_tokenize(readline, encoding='utf-8'))[1:-2] |
| expected_tokens = [(3, '"ЉЊЈЁЂ"', (1, 0), (1, 7), '"ЉЊЈЁЂ"')] |
| self.assertEqual(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 tokens |
| tokens = list(_tokenize(readline, encoding=None))[:-2] |
| expected_tokens = [(3, '"ЉЊЈЁЂ"', (1, 0), (1, 7), '"ЉЊЈЁЂ"')] |
| self.assertEqual(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.assertEqual(encoding, 'utf-8') |
| self.assertEqual(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.assertEqual(encoding, 'utf-8-sig') |
| self.assertEqual(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.assertEqual(encoding, 'iso-8859-1') |
| self.assertEqual(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.assertEqual(encoding, 'utf-8-sig') |
| self.assertEqual(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.assertEqual(encoding, 'ascii') |
| expected = [b'#! something\n', b'# vim: set fileencoding=ascii :\n'] |
| self.assertEqual(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.assertEqual(encoding, 'utf-8-sig') |
| self.assertEqual(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_cookie_second_line_noncommented_first_line(self): |
| lines = ( |
| b"print('\xc2\xa3')\n", |
| b'# vim: set fileencoding=iso8859-15 :\n', |
| b"print('\xe2\x82\xac')\n" |
| ) |
| encoding, consumed_lines = detect_encoding(self.get_readline(lines)) |
| self.assertEqual(encoding, 'utf-8') |
| expected = [b"print('\xc2\xa3')\n"] |
| self.assertEqual(consumed_lines, expected) |
| |
| def test_cookie_second_line_commented_first_line(self): |
| lines = ( |
| b"#print('\xc2\xa3')\n", |
| b'# vim: set fileencoding=iso8859-15 :\n', |
| b"print('\xe2\x82\xac')\n" |
| ) |
| encoding, consumed_lines = detect_encoding(self.get_readline(lines)) |
| self.assertEqual(encoding, 'iso8859-15') |
| expected = [b"#print('\xc2\xa3')\n", b'# vim: set fileencoding=iso8859-15 :\n'] |
| self.assertEqual(consumed_lines, expected) |
| |
| def test_cookie_second_line_empty_first_line(self): |
| lines = ( |
| b'\n', |
| b'# vim: set fileencoding=iso8859-15 :\n', |
| b"print('\xe2\x82\xac')\n" |
| ) |
| encoding, consumed_lines = detect_encoding(self.get_readline(lines)) |
| self.assertEqual(encoding, 'iso8859-15') |
| expected = [b'\n', b'# vim: set fileencoding=iso8859-15 :\n'] |
| self.assertEqual(consumed_lines, expected) |
| |
| def test_latin1_normalization(self): |
| # See get_normal_name() in tokenizer.c. |
| encodings = ("latin-1", "iso-8859-1", "iso-latin-1", "latin-1-unix", |
| "iso-8859-1-unix", "iso-latin-1-mac") |
| for encoding in encodings: |
| for rep in ("-", "_"): |
| enc = encoding.replace("-", rep) |
| lines = (b"#!/usr/bin/python\n", |
| b"# coding: " + enc.encode("ascii") + b"\n", |
| b"print(things)\n", |
| b"do_something += 4\n") |
| rl = self.get_readline(lines) |
| found, consumed_lines = detect_encoding(rl) |
| self.assertEqual(found, "iso-8859-1") |
| |
| def test_syntaxerror_latin1(self): |
| # Issue 14629: need to raise SyntaxError if the first |
| # line(s) have non-UTF-8 characters |
| lines = ( |
| b'print("\xdf")', # Latin-1: LATIN SMALL LETTER SHARP S |
| ) |
| readline = self.get_readline(lines) |
| self.assertRaises(SyntaxError, detect_encoding, readline) |
| |
| |
| def test_utf8_normalization(self): |
| # See get_normal_name() in tokenizer.c. |
| encodings = ("utf-8", "utf-8-mac", "utf-8-unix") |
| for encoding in encodings: |
| for rep in ("-", "_"): |
| enc = encoding.replace("-", rep) |
| lines = (b"#!/usr/bin/python\n", |
| b"# coding: " + enc.encode("ascii") + b"\n", |
| b"1 + 3\n") |
| rl = self.get_readline(lines) |
| found, consumed_lines = detect_encoding(rl) |
| self.assertEqual(found, "utf-8") |
| |
| def test_short_files(self): |
| readline = self.get_readline((b'print(something)\n',)) |
| encoding, consumed_lines = detect_encoding(readline) |
| self.assertEqual(encoding, 'utf-8') |
| self.assertEqual(consumed_lines, [b'print(something)\n']) |
| |
| encoding, consumed_lines = detect_encoding(self.get_readline(())) |
| self.assertEqual(encoding, 'utf-8') |
| self.assertEqual(consumed_lines, []) |
| |
| readline = self.get_readline((b'\xef\xbb\xbfprint(something)\n',)) |
| encoding, consumed_lines = detect_encoding(readline) |
| self.assertEqual(encoding, 'utf-8-sig') |
| self.assertEqual(consumed_lines, [b'print(something)\n']) |
| |
| readline = self.get_readline((b'\xef\xbb\xbf',)) |
| encoding, consumed_lines = detect_encoding(readline) |
| self.assertEqual(encoding, 'utf-8-sig') |
| self.assertEqual(consumed_lines, []) |
| |
| readline = self.get_readline((b'# coding: bad\n',)) |
| self.assertRaises(SyntaxError, detect_encoding, readline) |
| |
| def test_false_encoding(self): |
| # Issue 18873: "Encoding" detected in non-comment lines |
| readline = self.get_readline((b'print("#coding=fake")',)) |
| encoding, consumed_lines = detect_encoding(readline) |
| self.assertEqual(encoding, 'utf-8') |
| self.assertEqual(consumed_lines, [b'print("#coding=fake")']) |
| |
| def test_open(self): |
| filename = os_helper.TESTFN + '.py' |
| self.addCleanup(os_helper.unlink, filename) |
| |
| # test coding cookie |
| for encoding in ('iso-8859-15', 'utf-8'): |
| with open(filename, 'w', encoding=encoding) as fp: |
| print("# coding: %s" % encoding, file=fp) |
| print("print('euro:\u20ac')", file=fp) |
| with tokenize_open(filename) as fp: |
| self.assertEqual(fp.encoding, encoding) |
| self.assertEqual(fp.mode, 'r') |
| |
| # test BOM (no coding cookie) |
| with open(filename, 'w', encoding='utf-8-sig') as fp: |
| print("print('euro:\u20ac')", file=fp) |
| with tokenize_open(filename) as fp: |
| self.assertEqual(fp.encoding, 'utf-8-sig') |
| self.assertEqual(fp.mode, 'r') |
| |
| def test_filename_in_exception(self): |
| # When possible, include the file name in the exception. |
| path = 'some_file_path' |
| lines = ( |
| b'print("\xdf")', # Latin-1: LATIN SMALL LETTER SHARP S |
| ) |
| class Bunk: |
| def __init__(self, lines, path): |
| self.name = path |
| self._lines = lines |
| self._index = 0 |
| |
| def readline(self): |
| if self._index == len(lines): |
| raise StopIteration |
| line = lines[self._index] |
| self._index += 1 |
| return line |
| |
| with self.assertRaises(SyntaxError): |
| ins = Bunk(lines, path) |
| # Make sure lacking a name isn't an issue. |
| del ins.name |
| detect_encoding(ins.readline) |
| with self.assertRaisesRegex(SyntaxError, '.*{}'.format(path)): |
| ins = Bunk(lines, path) |
| detect_encoding(ins.readline) |
| |
| def test_open_error(self): |
| # Issue #23840: open() must close the binary file on error |
| m = BytesIO(b'#coding:xxx') |
| with mock.patch('tokenize._builtin_open', return_value=m): |
| self.assertRaises(SyntaxError, tokenize_open, 'foobar') |
| self.assertTrue(m.closed) |
| |
| |
| class TestTokenize(TestCase): |
| |
| def test_tokenize(self): |
| import tokenize as tokenize_module |
| encoding = object() |
| encoding_used = None |
| def mock_detect_encoding(readline): |
| return encoding, [b'first', b'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 str(counter).encode() |
| |
| 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.assertEqual(list(results), |
| [b'first', b'second', b'1', b'2', b'3', b'4']) |
| finally: |
| tokenize_module.detect_encoding = orig_detect_encoding |
| tokenize_module._tokenize = orig__tokenize |
| |
| self.assertEqual(encoding_used, encoding) |
| |
| def test_oneline_defs(self): |
| buf = [] |
| for i in range(500): |
| buf.append('def i{i}(): return {i}'.format(i=i)) |
| buf.append('OK') |
| buf = '\n'.join(buf) |
| |
| # Test that 500 consequent, one-line defs is OK |
| toks = list(tokenize(BytesIO(buf.encode('utf-8')).readline)) |
| self.assertEqual(toks[-3].string, 'OK') # [-1] is always ENDMARKER |
| # [-2] is always NEWLINE |
| |
| def assertExactTypeEqual(self, opstr, *optypes): |
| tokens = list(tokenize(BytesIO(opstr.encode('utf-8')).readline)) |
| num_optypes = len(optypes) |
| self.assertEqual(len(tokens), 3 + num_optypes) |
| self.assertEqual(tok_name[tokens[0].exact_type], |
| tok_name[ENCODING]) |
| for i in range(num_optypes): |
| self.assertEqual(tok_name[tokens[i + 1].exact_type], |
| tok_name[optypes[i]]) |
| self.assertEqual(tok_name[tokens[1 + num_optypes].exact_type], |
| tok_name[token.NEWLINE]) |
| self.assertEqual(tok_name[tokens[2 + num_optypes].exact_type], |
| tok_name[token.ENDMARKER]) |
| |
| def test_exact_type(self): |
| self.assertExactTypeEqual('()', token.LPAR, token.RPAR) |
| self.assertExactTypeEqual('[]', token.LSQB, token.RSQB) |
| self.assertExactTypeEqual(':', token.COLON) |
| self.assertExactTypeEqual(',', token.COMMA) |
| self.assertExactTypeEqual(';', token.SEMI) |
| self.assertExactTypeEqual('+', token.PLUS) |
| self.assertExactTypeEqual('-', token.MINUS) |
| self.assertExactTypeEqual('*', token.STAR) |
| self.assertExactTypeEqual('/', token.SLASH) |
| self.assertExactTypeEqual('|', token.VBAR) |
| self.assertExactTypeEqual('&', token.AMPER) |
| self.assertExactTypeEqual('<', token.LESS) |
| self.assertExactTypeEqual('>', token.GREATER) |
| self.assertExactTypeEqual('=', token.EQUAL) |
| self.assertExactTypeEqual('.', token.DOT) |
| self.assertExactTypeEqual('%', token.PERCENT) |
| self.assertExactTypeEqual('{}', token.LBRACE, token.RBRACE) |
| self.assertExactTypeEqual('==', token.EQEQUAL) |
| self.assertExactTypeEqual('!=', token.NOTEQUAL) |
| self.assertExactTypeEqual('<=', token.LESSEQUAL) |
| self.assertExactTypeEqual('>=', token.GREATEREQUAL) |
| self.assertExactTypeEqual('~', token.TILDE) |
| self.assertExactTypeEqual('^', token.CIRCUMFLEX) |
| self.assertExactTypeEqual('<<', token.LEFTSHIFT) |
| self.assertExactTypeEqual('>>', token.RIGHTSHIFT) |
| self.assertExactTypeEqual('**', token.DOUBLESTAR) |
| self.assertExactTypeEqual('+=', token.PLUSEQUAL) |
| self.assertExactTypeEqual('-=', token.MINEQUAL) |
| self.assertExactTypeEqual('*=', token.STAREQUAL) |
| self.assertExactTypeEqual('/=', token.SLASHEQUAL) |
| self.assertExactTypeEqual('%=', token.PERCENTEQUAL) |
| self.assertExactTypeEqual('&=', token.AMPEREQUAL) |
| self.assertExactTypeEqual('|=', token.VBAREQUAL) |
| self.assertExactTypeEqual('^=', token.CIRCUMFLEXEQUAL) |
| self.assertExactTypeEqual('^=', token.CIRCUMFLEXEQUAL) |
| self.assertExactTypeEqual('<<=', token.LEFTSHIFTEQUAL) |
| self.assertExactTypeEqual('>>=', token.RIGHTSHIFTEQUAL) |
| self.assertExactTypeEqual('**=', token.DOUBLESTAREQUAL) |
| self.assertExactTypeEqual('//', token.DOUBLESLASH) |
| self.assertExactTypeEqual('//=', token.DOUBLESLASHEQUAL) |
| self.assertExactTypeEqual(':=', token.COLONEQUAL) |
| self.assertExactTypeEqual('...', token.ELLIPSIS) |
| self.assertExactTypeEqual('->', token.RARROW) |
| self.assertExactTypeEqual('@', token.AT) |
| self.assertExactTypeEqual('@=', token.ATEQUAL) |
| |
| self.assertExactTypeEqual('a**2+b**2==c**2', |
| NAME, token.DOUBLESTAR, NUMBER, |
| token.PLUS, |
| NAME, token.DOUBLESTAR, NUMBER, |
| token.EQEQUAL, |
| NAME, token.DOUBLESTAR, NUMBER) |
| self.assertExactTypeEqual('{1, 2, 3}', |
| token.LBRACE, |
| token.NUMBER, token.COMMA, |
| token.NUMBER, token.COMMA, |
| token.NUMBER, |
| token.RBRACE) |
| self.assertExactTypeEqual('^(x & 0x1)', |
| token.CIRCUMFLEX, |
| token.LPAR, |
| token.NAME, token.AMPER, token.NUMBER, |
| token.RPAR) |
| |
| def test_pathological_trailing_whitespace(self): |
| # See http://bugs.python.org/issue16152 |
| self.assertExactTypeEqual('@ ', token.AT) |
| |
| |
| class UntokenizeTest(TestCase): |
| |
| def test_bad_input_order(self): |
| # raise if previous row |
| u = Untokenizer() |
| u.prev_row = 2 |
| u.prev_col = 2 |
| with self.assertRaises(ValueError) as cm: |
| u.add_whitespace((1,3)) |
| self.assertEqual(cm.exception.args[0], |
| 'start (1,3) precedes previous end (2,2)') |
| # raise if previous column in row |
| self.assertRaises(ValueError, u.add_whitespace, (2,1)) |
| |
| def test_backslash_continuation(self): |
| # The problem is that <whitespace>\<newline> leaves no token |
| u = Untokenizer() |
| u.prev_row = 1 |
| u.prev_col = 1 |
| u.tokens = [] |
| u.add_whitespace((2, 0)) |
| self.assertEqual(u.tokens, ['\\\n']) |
| u.prev_row = 2 |
| u.add_whitespace((4, 4)) |
| self.assertEqual(u.tokens, ['\\\n', '\\\n\\\n', ' ']) |
| TestRoundtrip.check_roundtrip(self, 'a\n b\n c\n \\\n c\n') |
| |
| def test_iter_compat(self): |
| u = Untokenizer() |
| token = (NAME, 'Hello') |
| tokens = [(ENCODING, 'utf-8'), token] |
| u.compat(token, iter([])) |
| self.assertEqual(u.tokens, ["Hello "]) |
| u = Untokenizer() |
| self.assertEqual(u.untokenize(iter([token])), 'Hello ') |
| u = Untokenizer() |
| self.assertEqual(u.untokenize(iter(tokens)), 'Hello ') |
| self.assertEqual(u.encoding, 'utf-8') |
| self.assertEqual(untokenize(iter(tokens)), b'Hello ') |
| |
| |
| 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\n") |
| |
| # 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(glob.escape(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_unicode_identifiers.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 support.verbose >= 2: |
| print('tokenize', testfile) |
| 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') |
| return untokenize(tokenize(BytesIO(code).readline)).decode('utf-8') |
| |
| def test_indentation_semantics_retained(self): |
| """ |
| Ensure that although whitespace might be mutated in a roundtrip, |
| the semantic meaning of the indentation remains consistent. |
| """ |
| 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) |
| |
| |
| if __name__ == "__main__": |
| unittest.main() |