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"""Unit tests for TranslationRequest value object."""
import pytest
from src.domain.models.translation_request import TranslationRequest
from src.domain.models.text_content import TextContent
class TestTranslationRequest:
"""Test cases for TranslationRequest value object."""
@pytest.fixture
def sample_text_content(self):
"""Sample text content for testing."""
return TextContent(
text="Hello, world!",
language="en"
)
def test_valid_translation_request_creation(self, sample_text_content):
"""Test creating valid TranslationRequest instance."""
request = TranslationRequest(
source_text=sample_text_content,
target_language="es",
source_language="en"
)
assert request.source_text == sample_text_content
assert request.target_language == "es"
assert request.source_language == "en"
assert request.effective_source_language == "en"
assert request.is_auto_detect_source is False
def test_translation_request_without_source_language(self, sample_text_content):
"""Test creating TranslationRequest without explicit source language."""
request = TranslationRequest(
source_text=sample_text_content,
target_language="es"
)
assert request.source_language is None
assert request.effective_source_language == "en" # From TextContent
assert request.is_auto_detect_source is True
def test_non_text_content_source_raises_error(self):
"""Test that non-TextContent source raises TypeError."""
with pytest.raises(TypeError, match="Source text must be a TextContent instance"):
TranslationRequest(
source_text="not a TextContent", # type: ignore
target_language="es"
)
def test_non_string_target_language_raises_error(self, sample_text_content):
"""Test that non-string target language raises TypeError."""
with pytest.raises(TypeError, match="Target language must be a string"):
TranslationRequest(
source_text=sample_text_content,
target_language=123 # type: ignore
)
def test_empty_target_language_raises_error(self, sample_text_content):
"""Test that empty target language raises ValueError."""
with pytest.raises(ValueError, match="Target language cannot be empty"):
TranslationRequest(
source_text=sample_text_content,
target_language=""
)
def test_whitespace_target_language_raises_error(self, sample_text_content):
"""Test that whitespace-only target language raises ValueError."""
with pytest.raises(ValueError, match="Target language cannot be empty"):
TranslationRequest(
source_text=sample_text_content,
target_language=" "
)
def test_invalid_target_language_format_raises_error(self, sample_text_content):
"""Test that invalid target language format raises ValueError."""
invalid_codes = ["e", "ENG", "en-us", "en-USA", "123", "en_US"]
for code in invalid_codes:
with pytest.raises(ValueError, match="Invalid target language code format"):
TranslationRequest(
source_text=sample_text_content,
target_language=code
)
def test_valid_target_language_codes(self, sample_text_content):
"""Test valid target language code formats."""
valid_codes = ["es", "fr", "de", "zh", "ja", "en-US", "fr-FR", "zh-CN"]
for code in valid_codes:
request = TranslationRequest(
source_text=sample_text_content,
target_language=code
)
assert request.target_language == code
def test_non_string_source_language_raises_error(self, sample_text_content):
"""Test that non-string source language raises TypeError."""
with pytest.raises(TypeError, match="Source language must be a string"):
TranslationRequest(
source_text=sample_text_content,
target_language="es",
source_language=123 # type: ignore
)
def test_empty_source_language_raises_error(self, sample_text_content):
"""Test that empty source language raises ValueError."""
with pytest.raises(ValueError, match="Source language cannot be empty string"):
TranslationRequest(
source_text=sample_text_content,
target_language="es",
source_language=""
)
def test_whitespace_source_language_raises_error(self, sample_text_content):
"""Test that whitespace-only source language raises ValueError."""
with pytest.raises(ValueError, match="Source language cannot be empty string"):
TranslationRequest(
source_text=sample_text_content,
target_language="es",
source_language=" "
)
def test_invalid_source_language_format_raises_error(self, sample_text_content):
"""Test that invalid source language format raises ValueError."""
invalid_codes = ["e", "ENG", "en-us", "en-USA", "123", "en_US"]
for code in invalid_codes:
with pytest.raises(ValueError, match="Invalid source language code format"):
TranslationRequest(
source_text=sample_text_content,
target_language="es",
source_language=code
)
def test_same_source_and_target_language_explicit_raises_error(self, sample_text_content):
"""Test that same explicit source and target language raises ValueError."""
with pytest.raises(ValueError, match="Source and target languages cannot be the same"):
TranslationRequest(
source_text=sample_text_content,
target_language="en",
source_language="en"
)
def test_same_source_and_target_language_implicit_raises_error(self):
"""Test that same implicit source and target language raises ValueError."""
text_content = TextContent(text="Hello", language="en")
with pytest.raises(ValueError, match="Source and target languages cannot be the same"):
TranslationRequest(
source_text=text_content,
target_language="en" # Same as text_content.language
)
def test_text_length_property(self, sample_text_content):
"""Test text_length property."""
request = TranslationRequest(
source_text=sample_text_content,
target_language="es"
)
assert request.text_length == len(sample_text_content.text)
def test_word_count_property(self, sample_text_content):
"""Test word_count property."""
request = TranslationRequest(
source_text=sample_text_content,
target_language="es"
)
assert request.word_count == sample_text_content.word_count
def test_with_target_language_method(self, sample_text_content):
"""Test with_target_language method creates new instance."""
original = TranslationRequest(
source_text=sample_text_content,
target_language="es",
source_language="en"
)
new_request = original.with_target_language("fr")
assert new_request.target_language == "fr"
assert new_request.source_text == original.source_text
assert new_request.source_language == original.source_language
assert new_request is not original # Different instances
def test_with_source_language_method(self, sample_text_content):
"""Test with_source_language method creates new instance."""
original = TranslationRequest(
source_text=sample_text_content,
target_language="es",
source_language="en"
)
new_request = original.with_source_language("de")
assert new_request.source_language == "de"
assert new_request.target_language == original.target_language
assert new_request.source_text == original.source_text
assert new_request is not original # Different instances
def test_with_source_language_none(self, sample_text_content):
"""Test with_source_language method with None value."""
original = TranslationRequest(
source_text=sample_text_content,
target_language="es",
source_language="en"
)
new_request = original.with_source_language(None)
assert new_request.source_language is None
assert new_request.is_auto_detect_source is True
def test_translation_request_is_immutable(self, sample_text_content):
"""Test that TranslationRequest is immutable (frozen dataclass)."""
request = TranslationRequest(
source_text=sample_text_content,
target_language="es"
)
with pytest.raises(AttributeError):
request.target_language = "fr" # type: ignore
def test_effective_source_language_with_explicit_source(self, sample_text_content):
"""Test effective_source_language with explicit source language."""
request = TranslationRequest(
source_text=sample_text_content,
target_language="es",
source_language="de" # Different from text_content.language
)
assert request.effective_source_language == "de"
def test_effective_source_language_with_implicit_source(self, sample_text_content):
"""Test effective_source_language with implicit source language."""
request = TranslationRequest(
source_text=sample_text_content,
target_language="es"
)
assert request.effective_source_language == sample_text_content.language |