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# coding: utf-8
"""Core tests for wcwidth module."""
# 3rd party
import pkg_resources
# local
import wcwidth
def test_package_version():
"""wcwidth.__version__ is expected value."""
# given,
expected = pkg_resources.get_distribution('wcwidth').version
# exercise,
result = wcwidth.__version__
# verify.
assert result == expected
def test_hello_jp():
u"""
Width of Japanese phrase: コンニチハ, セカイ!
Given a phrase of 5 and 3 Katakana ideographs, joined with
3 English-ASCII punctuation characters, totaling 11, this
phrase consumes 19 cells of a terminal emulator.
"""
# given,
phrase = u'コンニチハ, セカイ!'
expect_length_each = (2, 2, 2, 2, 2, 1, 1, 2, 2, 2, 1)
expect_length_phrase = sum(expect_length_each)
# exercise,
length_each = tuple(map(wcwidth.wcwidth, phrase))
length_phrase = wcwidth.wcswidth(phrase)
# verify.
assert length_each == expect_length_each
assert length_phrase == expect_length_phrase
def test_wcswidth_substr():
"""
Test wcswidth() optional 2nd parameter, ``n``.
``n`` determines at which position of the string
to stop counting length.
"""
# given,
phrase = u'コンニチハ, セカイ!'
end = 7
expect_length_each = (2, 2, 2, 2, 2, 1, 1,)
expect_length_phrase = sum(expect_length_each)
# exercise,
length_phrase = wcwidth.wcswidth(phrase, end)
# verify.
assert length_phrase == expect_length_phrase
def test_null_width_0():
"""NULL (0) reports width 0."""
# given,
phrase = u'abc\x00def'
expect_length_each = (1, 1, 1, 0, 1, 1, 1)
expect_length_phrase = sum(expect_length_each)
# exercise,
length_each = tuple(map(wcwidth.wcwidth, phrase))
length_phrase = wcwidth.wcswidth(phrase, len(phrase))
# verify.
assert length_each == expect_length_each
assert length_phrase == expect_length_phrase
def test_control_c0_width_negative_1():
"""CSI (Control sequence initiate) reports width -1 for ESC."""
# given,
phrase = u'\x1b[0m'
expect_length_each = (-1, 1, 1, 1)
expect_length_phrase = -1
# exercise,
length_each = tuple(map(wcwidth.wcwidth, phrase))
length_phrase = wcwidth.wcswidth(phrase, len(phrase))
# verify.
assert length_each == expect_length_each
assert length_phrase == expect_length_phrase
def test_combining_width():
"""Simple test combining reports total width of 4."""
# given,
phrase = u'--\u05bf--'
expect_length_each = (1, 1, 0, 1, 1)
expect_length_phrase = 4
# exercise,
length_each = tuple(map(wcwidth.wcwidth, phrase))
length_phrase = wcwidth.wcswidth(phrase, len(phrase))
# verify.
assert length_each == expect_length_each
assert length_phrase == expect_length_phrase
def test_combining_cafe():
u"""Phrase cafe + COMBINING ACUTE ACCENT is café of length 4."""
phrase = u"cafe\u0301"
expect_length_each = (1, 1, 1, 1, 0)
expect_length_phrase = 4
# exercise,
length_each = tuple(map(wcwidth.wcwidth, phrase))
length_phrase = wcwidth.wcswidth(phrase, len(phrase))
# verify.
assert length_each == expect_length_each
assert length_phrase == expect_length_phrase
def test_combining_enclosing():
u"""CYRILLIC CAPITAL LETTER A + COMBINING CYRILLIC HUNDRED THOUSANDS SIGN is А҈ of length 1."""
phrase = u"\u0410\u0488"
expect_length_each = (1, 0)
expect_length_phrase = 1
# exercise,
length_each = tuple(map(wcwidth.wcwidth, phrase))
length_phrase = wcwidth.wcswidth(phrase, len(phrase))
# verify.
assert length_each == expect_length_each
assert length_phrase == expect_length_phrase
def test_combining_spacing():
u"""Balinese kapal (ship) is ᬓᬨᬮ᭄ of length 4."""
phrase = u"\u1B13\u1B28\u1B2E\u1B44"
expect_length_each = (1, 1, 1, 1)
expect_length_phrase = 4
# exercise,
length_each = tuple(map(wcwidth.wcwidth, phrase))
length_phrase = wcwidth.wcswidth(phrase, len(phrase))
# verify.
assert length_each == expect_length_each
assert length_phrase == expect_length_phrase
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