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# Copyright © Michal Čihař <michal@weblate.org>
#
# SPDX-License-Identifier: MIT
"""Unit tests for unicode-segmentation-rs"""
import unicode_segmentation_rs
class TestGraphemes:
"""Tests for grapheme cluster segmentation"""
def test_simple_ascii(self):
text = "Hello"
result = unicode_segmentation_rs.graphemes(text, is_extended=True)
assert result == ["H", "e", "l", "l", "o"]
def test_emoji_zwj_sequence(self):
# Family emoji with ZWJ (Zero Width Joiner)
text = "👨👩👧👦"
result = unicode_segmentation_rs.graphemes(text, is_extended=True)
assert result == [text]
def test_combining_characters(self):
# Devanagari with combining characters
text = "नमस्ते"
result = unicode_segmentation_rs.graphemes(text, is_extended=True)
# Should treat combining characters as single graphemes
assert len(result) < len(text)
def test_grapheme_indices(self):
text = "Hello"
result = unicode_segmentation_rs.grapheme_indices(text, is_extended=True)
expected = [(0, "H"), (1, "e"), (2, "l"), (3, "l"), (4, "o")]
assert result == expected
def test_empty_string(self):
result = unicode_segmentation_rs.graphemes("", is_extended=True)
assert result == []
class TestWordSegmentation:
"""Tests for word segmentation"""
def test_split_word_bounds_simple(self):
text = "Hello world"
result = unicode_segmentation_rs.split_word_bounds(text)
assert result == ["Hello", " ", "world"]
def test_split_word_bounds_punctuation(self):
text = "Hello, world!"
result = unicode_segmentation_rs.split_word_bounds(text)
assert result == ["Hello", ",", " ", "world", "!"]
def test_unicode_words(self):
text = "Hello, world!"
result = unicode_segmentation_rs.unicode_words(text)
assert result == ["Hello", "world"]
def test_split_word_bound_indices(self):
text = "Hello world"
result = unicode_segmentation_rs.split_word_bound_indices(text)
expected = [(0, "Hello"), (5, " "), (6, "world")]
assert result == expected
def test_empty_string(self):
result = unicode_segmentation_rs.unicode_words("")
assert result == []
def test_multilingual(self):
text = "Hello世界"
result = unicode_segmentation_rs.unicode_words(text)
# Should handle mixed scripts
assert len(result) > 0
class TestSentenceSegmentation:
"""Tests for sentence segmentation"""
def test_simple_sentences(self):
text = "Hello world. How are you?"
result = unicode_segmentation_rs.unicode_sentences(text)
assert len(result) == 2
assert result[0] == "Hello world. "
assert result[1] == "How are you?"
def test_multiple_sentences(self):
text = "First. Second! Third?"
result = unicode_segmentation_rs.unicode_sentences(text)
assert len(result) == 3
def test_abbreviations(self):
text = "Dr. Smith went home."
result = unicode_segmentation_rs.unicode_sentences(text)
# Should handle abbreviations correctly
assert len(result) >= 1
def test_empty_string(self):
result = unicode_segmentation_rs.unicode_sentences("")
assert result == []
def test_arabic(self):
text = "مرحبا بك. كيف حالك؟"
result = unicode_segmentation_rs.unicode_sentences(text)
assert len(result) == 2
def test_japanese(self):
text = "こんにちは。お元気ですか？"
result = unicode_segmentation_rs.unicode_sentences(text)
assert len(result) == 2
class TestDisplayWidth:
"""Tests for display width calculation"""
def test_ascii_width(self):
assert unicode_segmentation_rs.text_width("Hello") == 5
assert unicode_segmentation_rs.text_width("a") == 1
def test_cjk_width(self):
# Chinese characters are typically 2 columns wide
assert unicode_segmentation_rs.text_width("世界") == 4
assert unicode_segmentation_rs.text_width("世") == 2
def test_mixed_width(self):
text = "Hello 世界"
width = unicode_segmentation_rs.text_width(text)
# "Hello" = 5, space = 1, "世界" = 4
assert width == 10
def test_empty_string(self):
assert unicode_segmentation_rs.text_width("") == 0
def test_text_width_ascii(self):
assert unicode_segmentation_rs.text_width("a") == 1
assert unicode_segmentation_rs.text_width("A") == 1
assert unicode_segmentation_rs.text_width("1") == 1
assert unicode_segmentation_rs.text_width(" ") == 1
def test_text_width(self):
assert unicode_segmentation_rs.text_width("世") == 2
assert unicode_segmentation_rs.text_width("界") == 2
assert unicode_segmentation_rs.text_width("あ") == 2
def test_text_width_control(self):
# Control characters should return None
assert unicode_segmentation_rs.text_width("\t") == 1
assert unicode_segmentation_rs.text_width("\n") == 1
assert unicode_segmentation_rs.text_width("\r") == 1
def test_text_width_mode(self):
# Basic test that CJK mode works
assert unicode_segmentation_rs.text_width("a") == 1
assert unicode_segmentation_rs.text_width("世") == 2
assert unicode_segmentation_rs.text_width("\t") == 1
class TestEdgeCases:
"""Tests for edge cases and special scenarios"""
def test_only_whitespace(self):
text = " "
assert unicode_segmentation_rs.graphemes(text, is_extended=True) == [
" ",
" ",
" ",
]
assert unicode_segmentation_rs.split_word_bounds(text) == [" "]
assert unicode_segmentation_rs.unicode_words(text) == []
def test_only_punctuation(self):
text = "!!!"
assert unicode_segmentation_rs.unicode_words(text) == []
assert unicode_segmentation_rs.split_word_bounds(text) == ["!", "!", "!"]
def test_newlines(self):
text = "Hello\nWorld"
result = unicode_segmentation_rs.unicode_words(text)
assert "Hello" in result
assert "World" in result
def test_tabs(self):
text = "Hello\tWorld"
result = unicode_segmentation_rs.unicode_words(text)
assert "Hello" in result
assert "World" in result
def test_multiple_spaces(self):
text = "Hello World"
words = unicode_segmentation_rs.unicode_words(text)
assert words == ["Hello", "World"]
class TestPerformance:
"""Basic performance sanity checks"""
def test_large_text_graphemes(self):
text = "a" * 10000
result = unicode_segmentation_rs.graphemes(text, is_extended=True)
assert len(result) == 10000
def test_large_text_words(self):
text = " ".join(["word"] * 1000)
result = unicode_segmentation_rs.unicode_words(text)
assert len(result) == 1000
def test_large_text_width(self):
text = "a" * 10000
width = unicode_segmentation_rs.text_width(text)
assert width == 10000
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