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"""
R Tests
~~~~~~~
:copyright: Copyright 2006-2021 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import pytest
from pygments.lexers import SLexer
from pygments.token import Token, Name, Punctuation
@pytest.fixture(scope='module')
def lexer():
yield SLexer()
def test_call(lexer):
fragment = 'f(1, a)\n'
tokens = [
(Name.Function, 'f'),
(Punctuation, '('),
(Token.Literal.Number, '1'),
(Punctuation, ','),
(Token.Text, ' '),
(Token.Name, 'a'),
(Punctuation, ')'),
(Token.Text, '\n'),
]
assert list(lexer.get_tokens(fragment)) == tokens
def test_name1(lexer):
fragment = '._a_2.c'
tokens = [
(Name, '._a_2.c'),
(Token.Text, '\n'),
]
assert list(lexer.get_tokens(fragment)) == tokens
def test_name2(lexer):
# Invalid names are valid if backticks are used
fragment = '`.1 blah`'
tokens = [
(Name, '`.1 blah`'),
(Token.Text, '\n'),
]
assert list(lexer.get_tokens(fragment)) == tokens
def test_name3(lexer):
# Internal backticks can be escaped
fragment = '`.1 \\` blah`'
tokens = [
(Name, '`.1 \\` blah`'),
(Token.Text, '\n'),
]
assert list(lexer.get_tokens(fragment)) == tokens
def test_custom_operator(lexer):
fragment = '7 % and % 8'
tokens = [
(Token.Literal.Number, '7'),
(Token.Text, ' '),
(Token.Operator, '% and %'),
(Token.Text, ' '),
(Token.Literal.Number, '8'),
(Token.Text, '\n'),
]
assert list(lexer.get_tokens(fragment)) == tokens
def test_indexing(lexer):
fragment = 'a[1]'
tokens = [
(Token.Name, 'a'),
(Token.Punctuation, '['),
(Token.Literal.Number, '1'),
(Token.Punctuation, ']'),
(Token.Text, '\n'),
]
assert list(lexer.get_tokens(fragment)) == tokens
def test_dot_name(lexer):
fragment = '. <- 1'
tokens = [
(Token.Name, '.'),
(Token.Text, ' '),
(Token.Operator, '<-'),
(Token.Text, ' '),
(Token.Literal.Number, '1'),
(Token.Text, '\n')
]
assert list(lexer.get_tokens(fragment)) == tokens
def test_dot_indexing(lexer):
fragment = '.[1]'
tokens = [
(Token.Name, '.'),
(Token.Punctuation, '['),
(Token.Literal.Number, '1'),
(Token.Punctuation, ']'),
(Token.Text, '\n'),
]
assert list(lexer.get_tokens(fragment)) == tokens
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