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"""Test lexers module"""
# Copyright (c) IPython Development Team.
# Distributed under the terms of the Modified BSD License.
import pygments.lexers
import pytest
from pygments import __version__ as pygments_version
from pygments.lexers import BashLexer
from pygments.token import Token
import ipython_pygments_lexers as lexers
pyg214 = tuple(int(x) for x in pygments_version.split(".")[:2]) >= (2, 14)
TOKEN_WS = Token.Text.Whitespace if pyg214 else Token.Text
EXPECTED_LEXER_NAMES = [
cls.name for cls in [lexers.IPythonConsoleLexer, lexers.IPython3Lexer]
]
@pytest.mark.parametrize("expected_lexer", EXPECTED_LEXER_NAMES)
def test_pygments_entry_points(expected_lexer: str):
"""Check whether the ``entry_points`` for ``pygments.lexers`` are correct."""
all_pygments_lexer_names = {l[0] for l in pygments.lexers.get_all_lexers()}
assert expected_lexer in all_pygments_lexer_names
def test_plain_python():
lexer = lexers.IPythonLexer()
fragment_2 = "x != y\n"
tokens_2 = [
(Token.Name, "x"),
(Token.Text, " "),
(Token.Operator, "!="),
(Token.Text, " "),
(Token.Name, "y"),
(Token.Text, "\n"),
]
assert tokens_2[:-1] == list(lexer.get_tokens(fragment_2))[:-1]
def test_shell_commands():
lexer = lexers.IPythonLexer()
bash_lexer = BashLexer()
fragment = "!echo $HOME\n"
bash_tokens = [
(Token.Operator, "!"),
]
bash_tokens.extend(bash_lexer.get_tokens(fragment[1:]))
ipylex_token = list(lexer.get_tokens(fragment))
assert bash_tokens[:-1] == ipylex_token[:-1]
fragment_2 = "!" + fragment
tokens_2 = [
(Token.Operator, "!!"),
] + bash_tokens[1:]
assert tokens_2[:-1] == list(lexer.get_tokens(fragment_2))[:-1]
fragment_2 = "\t %%!\n" + fragment[1:]
tokens_2 = [
(Token.Text, "\t "),
(Token.Operator, "%%!"),
(Token.Text, "\n"),
] + bash_tokens[1:]
assert tokens_2 == list(lexer.get_tokens(fragment_2))
fragment_2 = "x = " + fragment
tokens_2 = [
(Token.Name, "x"),
(Token.Text, " "),
(Token.Operator, "="),
(Token.Text, " "),
] + bash_tokens
assert tokens_2[:-1] == list(lexer.get_tokens(fragment_2))[:-1]
fragment_2 = "x, = " + fragment
tokens_2 = [
(Token.Name, "x"),
(Token.Punctuation, ","),
(Token.Text, " "),
(Token.Operator, "="),
(Token.Text, " "),
] + bash_tokens
assert tokens_2[:-1] == list(lexer.get_tokens(fragment_2))[:-1]
fragment_2 = "x, = %sx " + fragment[1:]
tokens_2 = [
(Token.Name, "x"),
(Token.Punctuation, ","),
(Token.Text, " "),
(Token.Operator, "="),
(Token.Text, " "),
(Token.Operator, "%"),
(Token.Keyword, "sx"),
(TOKEN_WS, " "),
] + bash_tokens[1:]
assert tokens_2[:-1] == list(lexer.get_tokens(fragment_2))[:-1]
def test_magics():
lexer = lexers.IPythonLexer()
fragment_2 = "f = %R function () {}\n"
tokens_2 = [
(Token.Name, "f"),
(Token.Text, " "),
(Token.Operator, "="),
(Token.Text, " "),
(Token.Operator, "%"),
(Token.Keyword, "R"),
(Token.Text, " function () {}\n"),
]
assert tokens_2 == list(lexer.get_tokens(fragment_2))
fragment_2 = "%system?\n"
tokens_2 = [
(Token.Operator, "%"),
(Token.Keyword, "system"),
(Token.Operator, "?"),
(Token.Text, "\n"),
]
assert tokens_2[:-1] == list(lexer.get_tokens(fragment_2))[:-1]
def test_help():
lexer = lexers.IPythonLexer()
fragment_2 = " ?math.sin\n"
tokens_2 = [
(Token.Text, " "),
(Token.Operator, "?"),
(Token.Text, "math.sin"),
(Token.Text, "\n"),
]
assert tokens_2[:-1] == list(lexer.get_tokens(fragment_2))[:-1]
fragment = " *int*?\n"
tokens = [
(Token.Text, " *int*"),
(Token.Operator, "?"),
(Token.Text, "\n"),
]
assert tokens == list(lexer.get_tokens(fragment))
def test_cell_magics():
lexer = lexers.IPythonLexer()
fragment = "%%writefile -a foo.py\nif a == b:\n pass"
tokens = [
(Token.Operator, "%%writefile"),
(Token.Text, " -a foo.py\n"),
(Token.Keyword, "if"),
(Token.Text, " "),
(Token.Name, "a"),
(Token.Text, " "),
(Token.Operator, "=="),
(Token.Text, " "),
(Token.Name, "b"),
(Token.Punctuation, ":"),
(TOKEN_WS, "\n"),
(Token.Text, " "),
(Token.Keyword, "pass"),
(TOKEN_WS, "\n"),
]
assert tokens == list(lexer.get_tokens(fragment))
fragment = "%%timeit\nmath.sin(0)"
tokens = [
(Token.Operator, "%%timeit"),
(Token.Text, "\n"),
(Token.Name, "math"),
(Token.Operator, "."),
(Token.Name, "sin"),
(Token.Punctuation, "("),
(Token.Literal.Number.Integer, "0"),
(Token.Punctuation, ")"),
(TOKEN_WS, "\n"),
]
assert tokens == list(lexer.get_tokens(fragment))
fragment = "%%HTML\n<div>foo</div>"
tokens = [
(Token.Operator, "%%HTML"),
(Token.Text, "\n"),
(Token.Punctuation, "<"),
(Token.Name.Tag, "div"),
(Token.Punctuation, ">"),
(Token.Text, "foo"),
(Token.Punctuation, "<"),
(Token.Punctuation, "/"),
(Token.Name.Tag, "div"),
(Token.Punctuation, ">"),
(Token.Text, "\n"),
]
assert tokens == list(lexer.get_tokens(fragment))
fragment_2 = "\t%%xyz\n$foo\n"
tokens_2 = [
(Token.Text, "\t"),
(Token.Operator, "%%"),
(Token.Keyword, "xyz"),
(Token.Text, "\n$foo\n"),
]
assert tokens_2 == list(lexer.get_tokens(fragment_2))
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