feat(): unit tests for domain entities and basic invariants

tests/unit/test_vacancy_entity.py

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+from datetime import UTC
+from decimal import Decimal
+from uuid import UUID, uuid4
+
+from template_project.application.common.enums import ExperienceType
+from template_project.application.vacancy.entity import Vacancy, VacancyEmbedding, VacancyId
+
+
+def test_vacancy_factory_creates_valid_vacancy() -> None:
+    vacancy = Vacancy.factory(
+        position="Python Developer",
+        from_salary=Decimal(100000),
+        to_salary=Decimal(150000),
+        experience_type=ExperienceType.BETWEEN_3_AND_6,
+        description="Backend development",
+        key_skills=["Python", "FastAPI"],
+    )
+
+    assert isinstance(vacancy.id, UUID)
+    assert vacancy.position == "Python Developer"
+    assert vacancy.from_salary == Decimal(100000)
+    assert vacancy.to_salary == Decimal(150000)
+    assert vacancy.experience_type == ExperienceType.BETWEEN_3_AND_6
+    assert vacancy.description == "Backend development"
+    assert vacancy.key_skills == ["Python", "FastAPI"]
+    assert vacancy.deleted_at is None
+    assert vacancy.created_at.tzinfo == UTC
+
+
+def test_vacancy_salary_order() -> None:
+    vacancy = Vacancy.factory(
+        position="Developer",
+        from_salary=Decimal(100000),
+        to_salary=Decimal(150000),
+        experience_type=ExperienceType.BETWEEN_1_AND_3,
+        description="Test",
+        key_skills=[],
+    )
+
+    assert vacancy.from_salary <= vacancy.to_salary
+
+
+def test_vacancy_equal_salaries() -> None:
+    vacancy = Vacancy.factory(
+        position="Developer",
+        from_salary=Decimal(100000),
+        to_salary=Decimal(100000),
+        experience_type=ExperienceType.BETWEEN_1_AND_3,
+        description="Test",
+        key_skills=[],
+    )
+
+    assert vacancy.from_salary == vacancy.to_salary
+
+
+def test_vacancy_empty_key_skills() -> None:
+    vacancy = Vacancy.factory(
+        position="Developer",
+        from_salary=Decimal(100000),
+        to_salary=Decimal(150000),
+        experience_type=ExperienceType.NO_EXPERIENCE,
+        description="Test",
+        key_skills=[],
+    )
+
+    assert vacancy.key_skills == []
+
+
+def test_vacancy_embedding_vector_dimension() -> None:
+    vacancy_id = VacancyId(uuid4())
+    vector = [0.1] * 384
+
+    embedding = VacancyEmbedding.factory(
+        vacancy_id=vacancy_id,
+        vector=vector,
+    )
+
+    assert len(embedding.vector) == 384
+    assert all(isinstance(x, float) for x in embedding.vector)
+
+
+def test_vacancy_embedding_factory_creates_valid_embedding() -> None:
+    vacancy_id = VacancyId(uuid4())
+    vector = [0.1, 0.2, 0.3, 0.4, 0.5]
+
+    embedding = VacancyEmbedding.factory(
+        vacancy_id=vacancy_id,
+        vector=vector,
+    )
+
+    assert isinstance(embedding.id, UUID)
+    assert embedding.vacancy_id == vacancy_id
+    assert embedding.vector == vector
+    assert embedding.deleted_at is None
+    assert embedding.created_at.tzinfo == UTC