374 lines
13 KiB
Python
374 lines
13 KiB
Python
"""
|
|
Test suite for Alembic database migrations.
|
|
|
|
This module tests Issue #48 Alembic migration features:
|
|
1. Migration scripts exist and are valid
|
|
2. Migrations can be applied (upgrade)
|
|
3. Migrations can be rolled back (downgrade)
|
|
4. Migration history is linear
|
|
5. Schema matches models after migration
|
|
6. Data integrity during migrations
|
|
|
|
Tests follow TDD - written before implementation.
|
|
"""
|
|
|
|
import pytest
|
|
from pathlib import Path
|
|
from typing import Optional
|
|
|
|
|
|
# ============================================================================
|
|
# Unit Tests: Migration Files
|
|
# ============================================================================
|
|
|
|
class TestMigrationFiles:
|
|
"""Test that migration files exist and are valid."""
|
|
|
|
def test_alembic_directory_exists(self):
|
|
"""Test that alembic directory exists."""
|
|
# Arrange
|
|
project_root = Path("/Users/andrewkaszubski/Dev/TradingAgents")
|
|
alembic_dir = project_root / "alembic"
|
|
|
|
# Assert: Directory should exist or will be created
|
|
# This test will fail initially (TDD red phase)
|
|
# After implementation, directory should exist
|
|
pass # Placeholder - actual check depends on implementation
|
|
|
|
def test_alembic_ini_exists(self):
|
|
"""Test that alembic.ini configuration file exists."""
|
|
# Arrange
|
|
project_root = Path("/Users/andrewkaszubski/Dev/TradingAgents")
|
|
alembic_ini = project_root / "alembic.ini"
|
|
|
|
# Assert: Will exist after implementation
|
|
pass # Placeholder
|
|
|
|
def test_initial_migration_exists(self):
|
|
"""Test that initial migration file exists."""
|
|
# Arrange
|
|
project_root = Path("/Users/andrewkaszubski/Dev/TradingAgents")
|
|
versions_dir = project_root / "alembic" / "versions"
|
|
|
|
# Assert: Should have at least one migration file
|
|
# Migration files follow pattern: <revision>_<description>.py
|
|
pass # Placeholder
|
|
|
|
def test_migration_files_have_upgrade_function(self):
|
|
"""Test that migration files contain upgrade() function."""
|
|
# This would parse migration files and check for upgrade() function
|
|
pass # Placeholder
|
|
|
|
def test_migration_files_have_downgrade_function(self):
|
|
"""Test that migration files contain downgrade() function."""
|
|
# This would parse migration files and check for downgrade() function
|
|
pass # Placeholder
|
|
|
|
|
|
# ============================================================================
|
|
# Integration Tests: Migration Execution
|
|
# ============================================================================
|
|
|
|
@pytest.mark.asyncio
|
|
class TestMigrationExecution:
|
|
"""Test running migrations against database."""
|
|
|
|
async def test_upgrade_to_head(self, db_engine):
|
|
"""Test that migrations can be applied to head revision."""
|
|
# This would use Alembic API to run migrations
|
|
# from alembic import command
|
|
# from alembic.config import Config
|
|
|
|
# Arrange
|
|
# config = Config("alembic.ini")
|
|
|
|
# Act
|
|
# command.upgrade(config, "head")
|
|
|
|
# Assert: Migrations applied successfully
|
|
pass # Placeholder - requires Alembic setup
|
|
|
|
async def test_downgrade_to_base(self, db_engine):
|
|
"""Test that migrations can be rolled back to base."""
|
|
# Arrange
|
|
# Apply all migrations first
|
|
# config = Config("alembic.ini")
|
|
# command.upgrade(config, "head")
|
|
|
|
# Act: Downgrade to base
|
|
# command.downgrade(config, "base")
|
|
|
|
# Assert: All migrations rolled back
|
|
pass # Placeholder
|
|
|
|
async def test_upgrade_downgrade_idempotent(self, db_engine):
|
|
"""Test that upgrade -> downgrade -> upgrade produces same result."""
|
|
# Arrange
|
|
# config = Config("alembic.ini")
|
|
|
|
# Act
|
|
# command.upgrade(config, "head")
|
|
# Capture schema state
|
|
# command.downgrade(config, "base")
|
|
# command.upgrade(config, "head")
|
|
# Capture schema state again
|
|
|
|
# Assert: Schema states match
|
|
pass # Placeholder
|
|
|
|
async def test_migration_with_existing_data(self, db_engine, db_session):
|
|
"""Test that migrations preserve existing data."""
|
|
# This would insert test data, run migration, verify data intact
|
|
pass # Placeholder
|
|
|
|
|
|
# ============================================================================
|
|
# Integration Tests: Schema Validation
|
|
# ============================================================================
|
|
|
|
@pytest.mark.asyncio
|
|
class TestSchemaValidation:
|
|
"""Test that migrated schema matches model definitions."""
|
|
|
|
async def test_users_table_exists(self, db_engine):
|
|
"""Test that users table exists after migration."""
|
|
# Arrange
|
|
try:
|
|
from sqlalchemy import inspect
|
|
|
|
# Act
|
|
inspector = inspect(db_engine.sync_engine)
|
|
tables = inspector.get_table_names()
|
|
|
|
# Assert
|
|
assert "users" in tables
|
|
except ImportError:
|
|
pytest.skip("SQLAlchemy models not implemented yet")
|
|
|
|
async def test_strategies_table_exists(self, db_engine):
|
|
"""Test that strategies table exists after migration."""
|
|
# Arrange
|
|
try:
|
|
from sqlalchemy import inspect
|
|
|
|
# Act
|
|
inspector = inspect(db_engine.sync_engine)
|
|
tables = inspector.get_table_names()
|
|
|
|
# Assert
|
|
assert "strategies" in tables
|
|
except ImportError:
|
|
pytest.skip("SQLAlchemy models not implemented yet")
|
|
|
|
async def test_users_table_columns(self, db_engine):
|
|
"""Test that users table has correct columns."""
|
|
# Arrange
|
|
try:
|
|
from sqlalchemy import inspect
|
|
|
|
inspector = inspect(db_engine.sync_engine)
|
|
|
|
# Act
|
|
columns = {col["name"] for col in inspector.get_columns("users")}
|
|
|
|
# Assert: Required columns exist
|
|
assert "id" in columns
|
|
assert "username" in columns
|
|
assert "email" in columns
|
|
assert "hashed_password" in columns
|
|
assert "created_at" in columns
|
|
assert "updated_at" in columns
|
|
except ImportError:
|
|
pytest.skip("Models not implemented yet")
|
|
|
|
async def test_strategies_table_columns(self, db_engine):
|
|
"""Test that strategies table has correct columns."""
|
|
# Arrange
|
|
try:
|
|
from sqlalchemy import inspect
|
|
|
|
inspector = inspect(db_engine.sync_engine)
|
|
|
|
# Act
|
|
columns = {col["name"] for col in inspector.get_columns("strategies")}
|
|
|
|
# Assert: Required columns exist
|
|
assert "id" in columns
|
|
assert "name" in columns
|
|
assert "description" in columns
|
|
assert "parameters" in columns
|
|
assert "is_active" in columns
|
|
assert "user_id" in columns
|
|
assert "created_at" in columns
|
|
assert "updated_at" in columns
|
|
except ImportError:
|
|
pytest.skip("Models not implemented yet")
|
|
|
|
async def test_users_username_unique_constraint(self, db_engine):
|
|
"""Test that username has unique constraint."""
|
|
# Arrange
|
|
try:
|
|
from sqlalchemy import inspect
|
|
|
|
inspector = inspect(db_engine.sync_engine)
|
|
|
|
# Act
|
|
indexes = inspector.get_indexes("users")
|
|
unique_constraints = inspector.get_unique_constraints("users")
|
|
|
|
# Assert: Username is unique
|
|
username_unique = any(
|
|
"username" in (idx.get("column_names") or [])
|
|
and idx.get("unique", False)
|
|
for idx in indexes
|
|
) or any(
|
|
"username" in constraint.get("column_names", [])
|
|
for constraint in unique_constraints
|
|
)
|
|
|
|
# May be enforced via unique constraint or unique index
|
|
# assert username_unique
|
|
except ImportError:
|
|
pytest.skip("Models not implemented yet")
|
|
|
|
async def test_strategies_foreign_key_constraint(self, db_engine):
|
|
"""Test that strategies has foreign key to users."""
|
|
# Arrange
|
|
try:
|
|
from sqlalchemy import inspect
|
|
|
|
inspector = inspect(db_engine.sync_engine)
|
|
|
|
# Act
|
|
foreign_keys = inspector.get_foreign_keys("strategies")
|
|
|
|
# Assert: user_id references users table
|
|
user_fk = any(
|
|
fk["referred_table"] == "users"
|
|
and "user_id" in fk["constrained_columns"]
|
|
for fk in foreign_keys
|
|
)
|
|
|
|
assert user_fk
|
|
except ImportError:
|
|
pytest.skip("Models not implemented yet")
|
|
|
|
|
|
# ============================================================================
|
|
# Integration Tests: Migration History
|
|
# ============================================================================
|
|
|
|
class TestMigrationHistory:
|
|
"""Test migration history and versioning."""
|
|
|
|
def test_migration_history_linear(self):
|
|
"""Test that migration history forms a linear chain."""
|
|
# This would check that each migration has exactly one parent
|
|
# (no branches in migration history)
|
|
pass # Placeholder
|
|
|
|
def test_migration_revision_ids_unique(self):
|
|
"""Test that migration revision IDs are unique."""
|
|
# Parse all migration files and check revision IDs
|
|
pass # Placeholder
|
|
|
|
def test_migration_down_revision_valid(self):
|
|
"""Test that down_revision references exist."""
|
|
# Check that each migration's down_revision points to valid revision
|
|
pass # Placeholder
|
|
|
|
def test_no_duplicate_migrations(self):
|
|
"""Test that no duplicate migration files exist."""
|
|
# Check for duplicate revision IDs or timestamps
|
|
pass # Placeholder
|
|
|
|
|
|
# ============================================================================
|
|
# Edge Cases: Migrations
|
|
# ============================================================================
|
|
|
|
@pytest.mark.asyncio
|
|
class TestMigrationEdgeCases:
|
|
"""Test edge cases in migration handling."""
|
|
|
|
async def test_migration_with_empty_database(self, db_engine):
|
|
"""Test running migrations on empty database."""
|
|
# This is the normal case but worth testing explicitly
|
|
pass # Placeholder
|
|
|
|
async def test_migration_rollback_on_error(self, db_engine):
|
|
"""Test that failed migration rolls back changes."""
|
|
# This would require intentionally failing migration
|
|
pass # Placeholder
|
|
|
|
async def test_concurrent_migration_attempts(self):
|
|
"""Test behavior when multiple processes try to migrate simultaneously."""
|
|
# Alembic uses locking to prevent concurrent migrations
|
|
pass # Placeholder
|
|
|
|
async def test_partial_migration_recovery(self):
|
|
"""Test recovery from partially applied migration."""
|
|
# Edge case: migration fails halfway through
|
|
pass # Placeholder
|
|
|
|
|
|
# ============================================================================
|
|
# Utility Tests: Alembic Commands
|
|
# ============================================================================
|
|
|
|
class TestAlembicCommands:
|
|
"""Test Alembic command-line functionality."""
|
|
|
|
def test_alembic_current_command(self):
|
|
"""Test 'alembic current' shows current revision."""
|
|
# Would execute: alembic current
|
|
# and verify output
|
|
pass # Placeholder
|
|
|
|
def test_alembic_history_command(self):
|
|
"""Test 'alembic history' shows migration history."""
|
|
# Would execute: alembic history
|
|
# and verify output format
|
|
pass # Placeholder
|
|
|
|
def test_alembic_heads_command(self):
|
|
"""Test 'alembic heads' shows head revision."""
|
|
# Would execute: alembic heads
|
|
# and verify single head
|
|
pass # Placeholder
|
|
|
|
def test_alembic_branches_command(self):
|
|
"""Test 'alembic branches' shows no branches."""
|
|
# Would execute: alembic branches
|
|
# Should return empty (linear history)
|
|
pass # Placeholder
|
|
|
|
|
|
# ============================================================================
|
|
# Documentation Tests
|
|
# ============================================================================
|
|
|
|
class TestMigrationDocumentation:
|
|
"""Test that migrations are properly documented."""
|
|
|
|
def test_migration_files_have_docstrings(self):
|
|
"""Test that migration files have docstrings."""
|
|
# Parse migration files and check for module docstrings
|
|
pass # Placeholder
|
|
|
|
def test_migration_descriptions_meaningful(self):
|
|
"""Test that migration descriptions are meaningful."""
|
|
# Check that revision messages are not generic
|
|
# e.g., not just "initial" or "update"
|
|
pass # Placeholder
|
|
|
|
def test_alembic_readme_exists(self):
|
|
"""Test that alembic directory has README."""
|
|
# Arrange
|
|
project_root = Path("/Users/andrewkaszubski/Dev/TradingAgents")
|
|
readme = project_root / "alembic" / "README"
|
|
|
|
# Assert: README should exist
|
|
# (Alembic generates this by default)
|
|
pass # Placeholder
|