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"""
Unit tests for database module
Comprehensive test coverage for database operations
"""
import pytest
import sqlite3
import tempfile
import os
from datetime import datetime
from pathlib import Path
# Import modules to test
import sys
sys.path.insert(0, str(Path(__file__).parent.parent))
from database import db_manager
from database.migrations import MigrationManager, auto_migrate
@pytest.fixture
def temp_db():
"""Create temporary database for testing"""
fd, path = tempfile.mkstemp(suffix='.db')
os.close(fd)
yield path
# Cleanup
if os.path.exists(path):
os.unlink(path)
@pytest.fixture
def db_instance(temp_db):
"""Create database instance for testing"""
from database import CryptoDatabase
db = CryptoDatabase(temp_db)
return db
class TestDatabaseInitialization:
"""Test database initialization and schema creation"""
def test_database_creation(self, temp_db):
"""Test that database file is created"""
from database import CryptoDatabase
db = CryptoDatabase(temp_db)
assert os.path.exists(temp_db)
assert os.path.getsize(temp_db) > 0
def test_tables_created(self, db_instance):
"""Test that all required tables are created"""
conn = sqlite3.connect(db_instance.db_path)
cursor = conn.cursor()
cursor.execute("""
SELECT name FROM sqlite_master
WHERE type='table'
""")
tables = {row[0] for row in cursor.fetchall()}
conn.close()
required_tables = {'prices', 'news', 'market_analysis', 'user_queries'}
assert required_tables.issubset(tables)
def test_indices_created(self, db_instance):
"""Test that indices are created"""
conn = sqlite3.connect(db_instance.db_path)
cursor = conn.cursor()
cursor.execute("""
SELECT name FROM sqlite_master
WHERE type='index'
""")
indices = {row[0] for row in cursor.fetchall()}
conn.close()
# Should have some indices
assert len(indices) > 0
class TestPriceOperations:
"""Test price data operations"""
def test_save_price(self, db_instance):
"""Test saving price data"""
price_data = {
'symbol': 'BTC',
'name': 'Bitcoin',
'price_usd': 50000.0,
'volume_24h': 1000000000,
'market_cap': 950000000000,
'percent_change_1h': 0.5,
'percent_change_24h': 2.3,
'percent_change_7d': -1.2,
'rank': 1
}
result = db_instance.save_price(price_data)
assert result is True
def test_get_latest_prices(self, db_instance):
"""Test retrieving latest prices"""
# Insert test data
for i in range(10):
price_data = {
'symbol': f'TEST{i}',
'name': f'Test Coin {i}',
'price_usd': 100.0 * (i + 1),
'volume_24h': 1000000,
'market_cap': 10000000,
'rank': i + 1
}
db_instance.save_price(price_data)
prices = db_instance.get_latest_prices(limit=5)
assert len(prices) == 5
assert prices[0]['rank'] == 1
def test_get_historical_prices(self, db_instance):
"""Test retrieving historical prices"""
# Insert test data
for i in range(5):
price_data = {
'symbol': 'BTC',
'name': 'Bitcoin',
'price_usd': 50000.0 + (i * 100),
'volume_24h': 1000000000,
'market_cap': 950000000000,
'rank': 1
}
db_instance.save_price(price_data)
prices = db_instance.get_historical_prices('BTC', days=7)
assert len(prices) > 0
assert all(p['symbol'] == 'BTC' for p in prices)
class TestNewsOperations:
"""Test news data operations"""
def test_save_news(self, db_instance):
"""Test saving news article"""
news_data = {
'title': 'Test Article',
'summary': 'This is a test summary',
'url': 'https://example.com/test',
'source': 'Test Source',
'sentiment_score': 0.8,
'sentiment_label': 'positive'
}
result = db_instance.save_news(news_data)
assert result is True
def test_duplicate_news_url(self, db_instance):
"""Test that duplicate URLs are rejected"""
news_data = {
'title': 'Test Article',
'summary': 'Summary',
'url': 'https://example.com/unique',
'source': 'Test'
}
# First insert should succeed
assert db_instance.save_news(news_data) is True
# Second insert with same URL should fail
assert db_instance.save_news(news_data) is False
def test_get_latest_news(self, db_instance):
"""Test retrieving latest news"""
# Insert test news
for i in range(10):
news_data = {
'title': f'Article {i}',
'summary': f'Summary {i}',
'url': f'https://example.com/article{i}',
'source': 'Test Source'
}
db_instance.save_news(news_data)
news = db_instance.get_latest_news(limit=5)
assert len(news) == 5
assert all('title' in n for n in news)
class TestAnalysisOperations:
"""Test market analysis operations"""
def test_save_analysis(self, db_instance):
"""Test saving market analysis"""
analysis_data = {
'symbol': 'BTC',
'timeframe': '24h',
'trend': 'bullish',
'support_level': 45000.0,
'resistance_level': 55000.0,
'prediction': 'Price likely to increase',
'confidence': 0.75
}
result = db_instance.save_analysis(analysis_data)
assert result is True
def test_get_latest_analysis(self, db_instance):
"""Test retrieving latest analysis"""
# Insert test analysis
analysis_data = {
'symbol': 'BTC',
'timeframe': '24h',
'trend': 'bullish',
'confidence': 0.8
}
db_instance.save_analysis(analysis_data)
analysis = db_instance.get_latest_analysis('BTC')
assert analysis is not None
assert analysis['symbol'] == 'BTC'
assert analysis['trend'] == 'bullish'
class TestMigrations:
"""Test database migration system"""
def test_migration_manager_init(self, temp_db):
"""Test migration manager initialization"""
manager = MigrationManager(temp_db)
assert len(manager.migrations) > 0
assert manager.get_current_version() == 0
def test_apply_migration(self, temp_db):
"""Test applying a single migration"""
manager = MigrationManager(temp_db)
pending = manager.get_pending_migrations()
assert len(pending) > 0
# Apply first migration
result = manager.apply_migration(pending[0])
assert result is True
# Version should be updated
assert manager.get_current_version() == pending[0].version
def test_migrate_to_latest(self, temp_db):
"""Test migrating to latest version"""
manager = MigrationManager(temp_db)
success, applied = manager.migrate_to_latest()
assert success is True
assert len(applied) > 0
assert manager.get_current_version() == max(applied)
def test_auto_migrate(self, temp_db):
"""Test auto-migration function"""
result = auto_migrate(temp_db)
assert result is True
class TestDataValidation:
"""Test data validation"""
def test_price_validation(self, db_instance):
"""Test price data validation"""
# Invalid price (negative)
invalid_price = {
'symbol': 'BTC',
'name': 'Bitcoin',
'price_usd': -100.0, # Invalid
'rank': 1
}
# Should handle gracefully (depending on implementation)
# This test assumes validation is in place
def test_required_fields(self, db_instance):
"""Test that required fields are enforced"""
# Missing required field
incomplete_price = {
'symbol': 'BTC'
# Missing name, price_usd, etc.
}
# Should handle missing fields gracefully
class TestConcurrency:
"""Test concurrent database access"""
def test_concurrent_writes(self, db_instance):
"""Test concurrent write operations"""
import threading
def write_price(i):
price_data = {
'symbol': f'TEST{i}',
'name': f'Test {i}',
'price_usd': float(i),
'rank': i
}
db_instance.save_price(price_data)
threads = [threading.Thread(target=write_price, args=(i,)) for i in range(10)]
for t in threads:
t.start()
for t in threads:
t.join()
# All writes should succeed
prices = db_instance.get_latest_prices(limit=10)
assert len(prices) == 10
if __name__ == '__main__':
pytest.main([__file__, '-v'])
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