diff --git a/src/dataset/dump_data.py b/src/dataset/dump_data.py
index 40cc96a..31b0423 100755
--- a/src/dataset/dump_data.py
+++ b/src/dataset/dump_data.py
@@ -1,25 +1,26 @@
 #!/usr/bin/env python3
-import subprocess
+import subprocess  # noqa: S404
 from pathlib import Path
+
 from template_project.web_api.configuration import load_configuration
 
 
 def main() -> None:
     config_path = Path("config.toml")
     configuration = load_configuration(config_path)
-    
+
     db_url = str(configuration.database.url.get_value())
     db_url = db_url.replace("postgresql+psycopg://", "postgresql://")
-    
+
     output_dir = Path("dumps")
     output_dir.mkdir(exist_ok=True)
-    
+
     output_file = output_dir / "data_dump.sql"
-    
+
     print("Создание дампа таблиц vacancy, vacancy_embedding, key_skills...")
-    
-    subprocess.run(
-        [
+
+    subprocess.run(  # noqa: S603
+        [  # noqa: S607
             "pg_dump",
             db_url,
             "--table=vacancy",
@@ -31,7 +32,7 @@ def main() -> None:
         ],
         check=True,
     )
-    
+
     print(f"\nДамп создан: {output_file}")
     print(f"Размер файла: {output_file.stat().st_size / 1024 / 1024:.2f} MB")
     print("\nДля импорта на прод сервере выполните:")
@@ -40,4 +41,3 @@ def main() -> None:
 
 if __name__ == "__main__":
     main()
-
diff --git a/src/template_project/adapters/data_gateways/tables.py b/src/template_project/adapters/data_gateways/tables.py
index 9e654f9..5adf4de 100644
--- a/src/template_project/adapters/data_gateways/tables.py
+++ b/src/template_project/adapters/data_gateways/tables.py
@@ -93,8 +93,8 @@ class ExperienceTypeType(TypeDecorator[ExperienceType]):
         if isinstance(value, str):
             try:
                 return ExperienceType(value)
-            except ValueError:
-                raise ValueError(f"Invalid experience_type value: {value}")
+            except ValueError as err:
+                raise ValueError(f"Invalid experience_type value: {value}") from err
         raise ValueError(f"Cannot convert {type(value)} to ExperienceType")
 
 
diff --git a/tests/unit/test_access_token_entity.py b/tests/unit/test_access_token_entity.py
new file mode 100644
index 0000000..d2f361a
--- /dev/null
+++ b/tests/unit/test_access_token_entity.py
@@ -0,0 +1,93 @@
+from datetime import UTC, datetime, timedelta
+from uuid import UUID, uuid4
+
+import pytest
+
+from template_project.application.access_token.entity import AccessToken
+from template_project.application.access_token.errors import AccessTokenExpiredError
+from template_project.application.user.entity import UserId
+
+
+def test_access_token_factory_creates_valid_token() -> None:
+    user_id = UserId(uuid4())
+    expires_in = timedelta(days=7)
+
+    token = AccessToken.factory(
+        user_id=user_id,
+        expires_in=expires_in,
+    )
+
+    assert isinstance(token.id, UUID)
+    assert token.user_id == user_id
+    assert token.revoked is False
+    assert token.expires_in > datetime.now(tz=UTC)
+    assert token.deleted_at is None
+    assert token.created_at.tzinfo == UTC
+
+
+def test_access_token_expired_predicate_not_expired() -> None:
+    user_id = UserId(uuid4())
+    token = AccessToken.factory(
+        user_id=user_id,
+        expires_in=timedelta(days=7),
+    )
+
+    assert not token.expired_predicate()
+
+
+def test_access_token_expired_predicate_expired_by_time() -> None:
+    user_id = UserId(uuid4())
+    token = AccessToken.factory(
+        user_id=user_id,
+        expires_in=timedelta(days=-1),
+    )
+
+    assert token.expired_predicate()
+
+
+def test_access_token_expired_predicate_revoked() -> None:
+    user_id = UserId(uuid4())
+    token = AccessToken.factory(
+        user_id=user_id,
+        expires_in=timedelta(days=7),
+    )
+    token.revoke()
+
+    assert token.expired_predicate()
+
+
+def test_access_token_ensure_expired_raises_when_expired() -> None:
+    user_id = UserId(uuid4())
+    token = AccessToken.factory(
+        user_id=user_id,
+        expires_in=timedelta(days=-1),
+    )
+
+    with pytest.raises(AccessTokenExpiredError):
+        token.ensure_expired()
+
+
+def test_access_token_ensure_expired_raises_when_revoked() -> None:
+    user_id = UserId(uuid4())
+    token = AccessToken.factory(
+        user_id=user_id,
+        expires_in=timedelta(days=7),
+    )
+    token.revoke()
+
+    with pytest.raises(AccessTokenExpiredError):
+        token.ensure_expired()
+
+
+def test_access_token_revoke() -> None:
+    user_id = UserId(uuid4())
+    token = AccessToken.factory(
+        user_id=user_id,
+        expires_in=timedelta(days=7),
+    )
+
+    token.revoke()
+
+    assert token.revoked is True
+    assert token.deleted_at is not None
+    assert token.deleted_at.tzinfo == UTC
diff --git a/tests/unit/test_auth_identity_entity.py b/tests/unit/test_auth_identity_entity.py
new file mode 100644
index 0000000..68f14cc
--- /dev/null
+++ b/tests/unit/test_auth_identity_entity.py
@@ -0,0 +1,36 @@
+from datetime import UTC
+from uuid import UUID, uuid4
+
+from template_project.application.auth_identity.entity import AuthIdentity, AuthMethod
+from template_project.application.user.entity import UserId
+
+
+def test_auth_identity_factory_creates_valid_identity() -> None:
+    user_id = UserId(uuid4())
+
+    identity = AuthIdentity.factory(
+        user_id=user_id,
+        method=AuthMethod.EMAIL,
+        identifier="test@example.com",
+        secret_key="hashed_password",
+    )
+
+    assert isinstance(identity.id, UUID)
+    assert identity.user_id == user_id
+    assert identity.method == AuthMethod.EMAIL
+    assert identity.identifier == "test@example.com"
+    assert identity.secret_key == "hashed_password"  # noqa: S105
+    assert identity.deleted_at is None
+    assert identity.created_at.tzinfo == UTC
+
+
+def test_auth_identity_factory_without_secret_key() -> None:
+    user_id = UserId(uuid4())
+
+    identity = AuthIdentity.factory(
+        user_id=user_id,
+        method=AuthMethod.YANDEX,
+        identifier="yandex_id_123",
+    )
+
+    assert identity.secret_key is None
diff --git a/tests/unit/test_notification_device_entity.py b/tests/unit/test_notification_device_entity.py
new file mode 100644
index 0000000..f8108d1
--- /dev/null
+++ b/tests/unit/test_notification_device_entity.py
@@ -0,0 +1,20 @@
+from datetime import UTC
+from uuid import UUID, uuid4
+
+from template_project.application.notification_device.entity import NotificationDevice
+from template_project.application.user.entity import UserId
+
+
+def test_notification_device_factory_creates_valid_device() -> None:
+    user_id = UserId(uuid4())
+
+    device = NotificationDevice.factory(
+        user_id=user_id,
+        device_id="device_123",
+    )
+
+    assert isinstance(device.id, UUID)
+    assert device.user_id == user_id
+    assert device.device_id == "device_123"
+    assert device.deleted_at is None
+    assert device.created_at.tzinfo == UTC
diff --git a/tests/unit/test_profile_entity.py b/tests/unit/test_profile_entity.py
new file mode 100644
index 0000000..3c58c5f
--- /dev/null
+++ b/tests/unit/test_profile_entity.py
@@ -0,0 +1,44 @@
+from datetime import UTC
+from uuid import UUID, uuid4
+
+from template_project.application.user.entity import UserId
+from template_project.application.user.profile.entity import Profile
+
+
+def test_profile_factory_creates_valid_profile() -> None:
+    user_id = UserId(uuid4())
+
+    profile = Profile.factory(
+        user_id=user_id,
+        email="test@example.com",
+        display_name="Test User",
+        first_name="Test",
+        last_name="User",
+        avatar_url="https://example.com/avatar.jpg",
+        phone="+1234567890",
+    )
+
+    assert isinstance(profile.id, UUID)
+    assert profile.user_id == user_id
+    assert profile.email == "test@example.com"
+    assert profile.display_name == "Test User"
+    assert profile.first_name == "Test"
+    assert profile.last_name == "User"
+    assert profile.avatar_url == "https://example.com/avatar.jpg"
+    assert profile.phone == "+1234567890"
+    assert profile.deleted_at is None
+    assert profile.created_at.tzinfo == UTC
+
+
+def test_profile_factory_with_minimal_fields() -> None:
+    user_id = UserId(uuid4())
+
+    profile = Profile.factory(user_id=user_id)
+
+    assert profile.user_id == user_id
+    assert profile.email is None
+    assert profile.display_name is None
+    assert profile.first_name is None
+    assert profile.last_name is None
+    assert profile.avatar_url is None
+    assert profile.phone is None
diff --git a/tests/unit/test_resume_entity.py b/tests/unit/test_resume_entity.py
new file mode 100644
index 0000000..6b67bbc
--- /dev/null
+++ b/tests/unit/test_resume_entity.py
@@ -0,0 +1,229 @@
+from datetime import UTC
+from decimal import Decimal
+from uuid import UUID, uuid4
+
+from template_project.application.common.enums import EducationGrade, ExperienceType
+from template_project.application.resume.entity import (
+    Resume,
+    ResumeEducation,
+    ResumeEmbedding,
+    ResumeExperience,
+    ResumeId,
+    ResumePrediction,
+    ResumeProject,
+)
+from template_project.application.user.entity import UserId
+
+
+def test_resume_factory_creates_valid_resume() -> None:
+    user_id = UserId(uuid4())
+    resume = Resume.factory(
+        user_id=user_id,
+        position="Python Developer",
+        location="Moscow",
+        about_me="Experienced developer",
+        key_skills=["Python", "FastAPI"],
+        experience_type=ExperienceType.BETWEEN_3_AND_6,
+    )
+
+    assert isinstance(resume.id, UUID)
+    assert resume.user_id == user_id
+    assert resume.position == "Python Developer"
+    assert resume.location == "Moscow"
+    assert resume.about_me == "Experienced developer"
+    assert resume.key_skills == ["Python", "FastAPI"]
+    assert resume.experience_type == ExperienceType.BETWEEN_3_AND_6
+    assert resume.down_resume_id is None
+    assert resume.up_resume_id is None
+    assert resume.deleted_at is None
+    assert resume.created_at.tzinfo == UTC
+
+
+def test_resume_factory_with_history_links() -> None:
+    user_id = UserId(uuid4())
+    old_resume_id = ResumeId(uuid4())
+
+    resume = Resume.factory(
+        user_id=user_id,
+        position="Python Developer",
+        location="Moscow",
+        about_me="Updated",
+        key_skills=["Python"],
+        experience_type=ExperienceType.BETWEEN_3_AND_6,
+        down_resume_id=old_resume_id,
+    )
+
+    assert resume.down_resume_id == old_resume_id
+
+
+def test_resume_embedding_factory_creates_valid_embedding() -> None:
+    resume_id = ResumeId(uuid4())
+    vector = [0.1, 0.2, 0.3, 0.4, 0.5]
+
+    embedding = ResumeEmbedding.factory(
+        resume_id=resume_id,
+        vector=vector,
+    )
+
+    assert isinstance(embedding.id, UUID)
+    assert embedding.resume_id == resume_id
+    assert embedding.vector == vector
+    assert embedding.deleted_at is None
+    assert embedding.created_at.tzinfo == UTC
+
+
+def test_resume_embedding_vector_dimension() -> None:
+    resume_id = ResumeId(uuid4())
+    vector = [0.1] * 384
+
+    embedding = ResumeEmbedding.factory(
+        resume_id=resume_id,
+        vector=vector,
+    )
+
+    assert len(embedding.vector) == 384
+    assert all(isinstance(x, float) for x in embedding.vector)
+
+
+def test_resume_prediction_factory_creates_valid_prediction() -> None:
+    resume_id = ResumeId(uuid4())
+
+    prediction = ResumePrediction.factory(
+        resume_id=resume_id,
+        from_salary=Decimal(100000),
+        to_salary=Decimal(150000),
+        recommended_skills=["Kubernetes", "Docker"],
+    )
+
+    assert isinstance(prediction.id, UUID)
+    assert prediction.resume_id == resume_id
+    assert prediction.from_salary == Decimal(100000)
+    assert prediction.to_salary == Decimal(150000)
+    assert prediction.recommended_skills == ["Kubernetes", "Docker"]
+    assert prediction.deleted_at is None
+    assert prediction.created_at.tzinfo == UTC
+
+
+def test_resume_prediction_salary_order() -> None:
+    resume_id = ResumeId(uuid4())
+
+    prediction = ResumePrediction.factory(
+        resume_id=resume_id,
+        from_salary=Decimal(100000),
+        to_salary=Decimal(150000),
+        recommended_skills=[],
+    )
+
+    assert prediction.from_salary <= prediction.to_salary
+
+
+def test_resume_prediction_empty_recommended_skills() -> None:
+    resume_id = ResumeId(uuid4())
+
+    prediction = ResumePrediction.factory(
+        resume_id=resume_id,
+        from_salary=Decimal(100000),
+        to_salary=Decimal(150000),
+        recommended_skills=[],
+    )
+
+    assert prediction.recommended_skills == []
+
+
+def test_resume_experience_positive_duration() -> None:
+    resume_id = ResumeId(uuid4())
+
+    experience = ResumeExperience.factory(
+        resume_id=resume_id,
+        place="Company",
+        description="Work",
+        months_duration=12,
+    )
+
+    assert experience.months_duration > 0
+
+
+def test_resume_key_skills_empty_list() -> None:
+    user_id = UserId(uuid4())
+
+    resume = Resume.factory(
+        user_id=user_id,
+        position="Developer",
+        location="Moscow",
+        about_me="Test",
+        key_skills=[],
+        experience_type=ExperienceType.NO_EXPERIENCE,
+    )
+
+    assert resume.key_skills == []
+
+
+def test_resume_experience_factory_creates_valid_experience() -> None:
+    resume_id = ResumeId(uuid4())
+
+    experience = ResumeExperience.factory(
+        resume_id=resume_id,
+        place="T-bank",
+        description="Backend development",
+        months_duration=24,
+    )
+
+    assert isinstance(experience.id, UUID)
+    assert experience.resume_id == resume_id
+    assert experience.place == "T-bank"
+    assert experience.description == "Backend development"
+    assert experience.months_duration == 24
+    assert experience.months_duration > 0
+    assert experience.deleted_at is None
+    assert experience.created_at.tzinfo == UTC
+
+
+def test_resume_education_factory_creates_valid_education() -> None:
+    resume_id = ResumeId(uuid4())
+
+    education = ResumeEducation.factory(
+        resume_id=resume_id,
+        place="University",
+        grade=EducationGrade.BACHELOR,
+        specialization="Computer Science",
+        description="Optional description",
+    )
+
+    assert isinstance(education.id, UUID)
+    assert education.resume_id == resume_id
+    assert education.place == "University"
+    assert education.grade == EducationGrade.BACHELOR
+    assert education.specialization == "Computer Science"
+    assert education.description == "Optional description"
+    assert education.deleted_at is None
+    assert education.created_at.tzinfo == UTC
+
+
+def test_resume_education_factory_without_description() -> None:
+    resume_id = ResumeId(uuid4())
+
+    education = ResumeEducation.factory(
+        resume_id=resume_id,
+        place="University",
+        grade=EducationGrade.MASTER,
+        specialization="Data Science",
+    )
+
+    assert education.description is None
+
+
+def test_resume_project_factory_creates_valid_project() -> None:
+    resume_id = ResumeId(uuid4())
+
+    project = ResumeProject.factory(
+        resume_id=resume_id,
+        name="ML Service",
+        description="Machine learning service",
+    )
+
+    assert isinstance(project.id, UUID)
+    assert project.resume_id == resume_id
+    assert project.name == "ML Service"
+    assert project.description == "Machine learning service"
+    assert project.deleted_at is None
+    assert project.created_at.tzinfo == UTC
diff --git a/tests/unit/test_user_entity.py b/tests/unit/test_user_entity.py
new file mode 100644
index 0000000..aef88a9
--- /dev/null
+++ b/tests/unit/test_user_entity.py
@@ -0,0 +1,12 @@
+from datetime import UTC
+from uuid import UUID
+
+from template_project.application.user.entity import User
+
+
+def test_user_factory_creates_valid_user() -> None:
+    user = User.factory()
+
+    assert isinstance(user.id, UUID)
+    assert user.deleted_at is None
+    assert user.created_at.tzinfo == UTC
diff --git a/tests/unit/test_vacancy_entity.py b/tests/unit/test_vacancy_entity.py
new file mode 100644
index 0000000..3421107
--- /dev/null
+++ b/tests/unit/test_vacancy_entity.py
@@ -0,0 +1,95 @@
+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