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58 lines
2.3 KiB
Python
58 lines
2.3 KiB
Python
# SPDX-FileCopyrightText: 2022-present deepset GmbH <info@deepset.ai>
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#
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# SPDX-License-Identifier: Apache-2.0
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import logging
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import pytest
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from _pytest.logging import LogCaptureFixture
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from haystack import Document
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from haystack.components.routers import TextLanguageRouter
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class TestTextLanguageRouter:
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def test_non_string_input(self):
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with pytest.raises(TypeError, match="TextLanguageRouter expects a string as input."):
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classifier = TextLanguageRouter()
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classifier.run(text=Document(content="This is an english sentence."))
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def test_list_of_string(self):
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with pytest.raises(TypeError, match="TextLanguageRouter expects a string as input."):
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classifier = TextLanguageRouter()
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classifier.run(text=["This is an english sentence."])
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def test_empty_string(self):
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classifier = TextLanguageRouter()
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result = classifier.run(text="")
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assert result == {"unmatched": ""}
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def test_detect_language(self):
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classifier = TextLanguageRouter()
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detected_language = classifier._detect_language("This is an english sentence.")
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assert detected_language == "en"
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def test_route_to_en(self):
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classifier = TextLanguageRouter()
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english_sentence = "This is an english sentence."
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result = classifier.run(text=english_sentence)
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assert result == {"en": english_sentence}
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def test_route_to_unmatched(self):
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classifier = TextLanguageRouter()
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german_sentence = "Ein deutscher Satz ohne Verb."
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result = classifier.run(text=german_sentence)
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assert result == {"unmatched": german_sentence}
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def test_warning_if_no_language_detected(self, caplog: LogCaptureFixture):
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with caplog.at_level(logging.WARNING):
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classifier = TextLanguageRouter()
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classifier.run(text=".")
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assert "Langdetect cannot detect the language of text. Error: No features in text." in caplog.text
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def test_warning_if_no_language_detected_if_debug(self, caplog: LogCaptureFixture):
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with caplog.at_level(logging.DEBUG):
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classifier = TextLanguageRouter()
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classifier.run(text=".")
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assert "Langdetect cannot detect the language of text. Error: No features in text." in caplog.text
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assert "Langdetect cannot detect the language of text: ." in caplog.text
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