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# -*- coding: utf-8 -*-
"""
R Tests
~~~~~~~
:copyright: Copyright 2006-2019 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 = u'f(1, a)\n'
tokens = [
(Name.Function, u'f'),
(Punctuation, u'('),
(Token.Literal.Number, u'1'),
(Punctuation, u','),
(Token.Text, u' '),
(Token.Name, u'a'),
(Punctuation, u')'),
(Token.Text, u'\n'),
]
assert list(lexer.get_tokens(fragment)) == tokens
def test_name1(lexer):
fragment = u'._a_2.c'
tokens = [
(Name, u'._a_2.c'),
(Token.Text, u'\n'),
]
assert list(lexer.get_tokens(fragment)) == tokens
def test_name2(lexer):
# Invalid names are valid if backticks are used
fragment = u'`.1 blah`'
tokens = [
(Name, u'`.1 blah`'),
(Token.Text, u'\n'),
]
assert list(lexer.get_tokens(fragment)) == tokens
def test_name3(lexer):
# Internal backticks can be escaped
fragment = u'`.1 \\` blah`'
tokens = [
(Name, u'`.1 \\` blah`'),
(Token.Text, u'\n'),
]
assert list(lexer.get_tokens(fragment)) == tokens
def test_custom_operator(lexer):
fragment = u'7 % and % 8'
tokens = [
(Token.Literal.Number, u'7'),
(Token.Text, u' '),
(Token.Operator, u'% and %'),
(Token.Text, u' '),
(Token.Literal.Number, u'8'),
(Token.Text, u'\n'),
]
assert list(lexer.get_tokens(fragment)) == tokens
def test_indexing(lexer):
fragment = u'a[1]'
tokens = [
(Token.Name, u'a'),
(Token.Punctuation, u'['),
(Token.Literal.Number, u'1'),
(Token.Punctuation, u']'),
(Token.Text, u'\n'),
]
assert list(lexer.get_tokens(fragment)) == tokens
def test_dot_name(lexer):
fragment = u'. <- 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 = u'.[1]'
tokens = [
(Token.Name, u'.'),
(Token.Punctuation, u'['),
(Token.Literal.Number, u'1'),
(Token.Punctuation, u']'),
(Token.Text, u'\n'),
]
assert list(lexer.get_tokens(fragment)) == tokens
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