spaCy/spacy/tests/lang/de/test_prefix_suffix_infix.py

# coding: utf-8
"""Test that tokenizer prefixes, suffixes and infixes are handled correctly."""


from __future__ import unicode_literals

import pytest


@pytest.mark.parametrize('text', ["(unter)"])
def test_tokenizer_splits_no_special(de_tokenizer, text):
    tokens = de_tokenizer(text)
    assert len(tokens) == 3


@pytest.mark.parametrize('text', ["unter'm"])
def test_tokenizer_splits_no_punct(de_tokenizer, text):
    tokens = de_tokenizer(text)
    assert len(tokens) == 2


@pytest.mark.parametrize('text', ["(unter'm"])
def test_tokenizer_splits_prefix_punct(de_tokenizer, text):
    tokens = de_tokenizer(text)
    assert len(tokens) == 3


@pytest.mark.parametrize('text', ["unter'm)"])
def test_tokenizer_splits_suffix_punct(de_tokenizer, text):
    tokens = de_tokenizer(text)
    assert len(tokens) == 3


@pytest.mark.parametrize('text', ["(unter'm)"])
def test_tokenizer_splits_even_wrap(de_tokenizer, text):
    tokens = de_tokenizer(text)
    assert len(tokens) == 4


@pytest.mark.parametrize('text', ["(unter'm?)"])
def test_tokenizer_splits_uneven_wrap(de_tokenizer, text):
    tokens = de_tokenizer(text)
    assert len(tokens) == 5


@pytest.mark.parametrize('text,length', [("z.B.", 1), ("zb.", 2), ("(z.B.", 2)])
def test_tokenizer_splits_prefix_interact(de_tokenizer, text, length):
    tokens = de_tokenizer(text)
    assert len(tokens) == length


@pytest.mark.parametrize('text', ["z.B.)"])
def test_tokenizer_splits_suffix_interact(de_tokenizer, text):
    tokens = de_tokenizer(text)
    assert len(tokens) == 2


@pytest.mark.parametrize('text', ["(z.B.)"])
def test_tokenizer_splits_even_wrap_interact(de_tokenizer, text):
    tokens = de_tokenizer(text)
    assert len(tokens) == 3


@pytest.mark.parametrize('text', ["(z.B.?)"])
def test_tokenizer_splits_uneven_wrap_interact(de_tokenizer, text):
    tokens = de_tokenizer(text)
    assert len(tokens) == 4


@pytest.mark.parametrize('text', ["0.1-13.5", "0.0-0.1", "103.27-300"])
def test_tokenizer_splits_numeric_range(de_tokenizer, text):
    tokens = de_tokenizer(text)
    assert len(tokens) == 3


@pytest.mark.parametrize('text', ["blau.Rot", "Hallo.Welt"])
def test_tokenizer_splits_period_infix(de_tokenizer, text):
    tokens = de_tokenizer(text)
    assert len(tokens) == 3


@pytest.mark.parametrize('text', ["Hallo,Welt", "eins,zwei"])
def test_tokenizer_splits_comma_infix(de_tokenizer, text):
    tokens = de_tokenizer(text)
    assert len(tokens) == 3
    assert tokens[0].text == text.split(",")[0]
    assert tokens[1].text == ","
    assert tokens[2].text == text.split(",")[1]


@pytest.mark.parametrize('text', ["blau...Rot", "blau...rot"])
def test_tokenizer_splits_ellipsis_infix(de_tokenizer, text):
    tokens = de_tokenizer(text)
    assert len(tokens) == 3


@pytest.mark.parametrize('text', ['Islam-Konferenz', 'Ost-West-Konflikt'])
def test_tokenizer_keeps_hyphens(de_tokenizer, text):
    tokens = de_tokenizer(text)
    assert len(tokens) == 1


def test_tokenizer_splits_double_hyphen_infix(de_tokenizer):
    tokens = de_tokenizer("Viele Regeln--wie die Bindestrich-Regeln--sind kompliziert.")
    assert len(tokens) == 10
    assert tokens[0].text == "Viele"
    assert tokens[1].text == "Regeln"
    assert tokens[2].text == "--"
    assert tokens[3].text == "wie"
    assert tokens[4].text == "die"
    assert tokens[5].text == "Bindestrich-Regeln"
    assert tokens[6].text == "--"
    assert tokens[7].text == "sind"
    assert tokens[8].text == "kompliziert"