""" Unit tests for technical indicators module. Tests verify that all technical indicators work correctly with sparse OHLCV data and handle edge cases appropriately. """ import pytest from datetime import datetime, timezone, timedelta from decimal import Decimal import pandas as pd import numpy as np from data.common.indicators import ( TechnicalIndicators, IndicatorResult, create_default_indicators_config, validate_indicator_config ) from data.common.data_types import OHLCVCandle class TestTechnicalIndicators: """Test suite for TechnicalIndicators class.""" @pytest.fixture def sample_candles(self): """Create sample OHLCV candles for testing.""" candles = [] base_time = datetime(2024, 1, 1, 9, 0, 0, tzinfo=timezone.utc) # Create 30 candles with realistic price movement prices = [100.0, 101.0, 102.5, 101.8, 103.0, 104.2, 103.8, 105.0, 104.5, 106.0, 107.5, 108.0, 107.2, 109.0, 108.5, 110.0, 109.8, 111.0, 110.5, 112.0, 111.8, 113.0, 112.5, 114.0, 113.2, 115.0, 114.8, 116.0, 115.5, 117.0] for i, price in enumerate(prices): candle = OHLCVCandle( symbol='BTC-USDT', timeframe='1m', start_time=base_time + timedelta(minutes=i), end_time=base_time + timedelta(minutes=i+1), open=Decimal(str(price - 0.2)), high=Decimal(str(price + 0.5)), low=Decimal(str(price - 0.5)), close=Decimal(str(price)), volume=Decimal('1000'), trade_count=10, exchange='test', is_complete=True ) candles.append(candle) return candles @pytest.fixture def sparse_candles(self): """Create sparse OHLCV candles (with gaps) for testing.""" candles = [] base_time = datetime(2024, 1, 1, 9, 0, 0, tzinfo=timezone.utc) # Create candles with time gaps (sparse data) gap_minutes = [0, 1, 3, 5, 8, 10, 15, 18, 22, 25] prices = [100.0, 101.0, 102.0, 103.0, 104.0, 105.0, 106.0, 107.0, 108.0, 109.0] for i, (gap, price) in enumerate(zip(gap_minutes, prices)): candle = OHLCVCandle( symbol='BTC-USDT', timeframe='1m', start_time=base_time + timedelta(minutes=gap), end_time=base_time + timedelta(minutes=gap+1), open=Decimal(str(price - 0.2)), high=Decimal(str(price + 0.5)), low=Decimal(str(price - 0.5)), close=Decimal(str(price)), volume=Decimal('1000'), trade_count=10, exchange='test', is_complete=True ) candles.append(candle) return candles @pytest.fixture def indicators(self): """Create TechnicalIndicators instance.""" return TechnicalIndicators() def test_initialization(self, indicators): """Test TechnicalIndicators initialization.""" assert indicators is not None assert indicators.logger is None def test_prepare_dataframe(self, indicators, sample_candles): """Test DataFrame preparation from OHLCV candles.""" df = indicators.prepare_dataframe(sample_candles) assert not df.empty assert len(df) == len(sample_candles) assert list(df.columns) == ['symbol', 'timeframe', 'open', 'high', 'low', 'close', 'volume', 'trade_count'] assert df.index.name == 'timestamp' # Check that timestamps are sorted assert df.index.is_monotonic_increasing def test_prepare_dataframe_empty(self, indicators): """Test DataFrame preparation with empty candles list.""" df = indicators.prepare_dataframe([]) assert df.empty def test_sma_calculation(self, indicators, sample_candles): """Test Simple Moving Average calculation.""" period = 5 results = indicators.sma(sample_candles, period) # Should have results starting from period 5 assert len(results) == len(sample_candles) - period + 1 # Check first result first_result = results[0] assert isinstance(first_result, IndicatorResult) assert first_result.symbol == 'BTC-USDT' assert first_result.timeframe == '1m' assert 'sma' in first_result.values assert first_result.metadata['period'] == period # Verify SMA calculation manually for first result first_5_closes = [float(candle.close) for candle in sample_candles[:5]] expected_sma = sum(first_5_closes) / len(first_5_closes) assert abs(first_result.values['sma'] - expected_sma) < 0.001 def test_sma_insufficient_data(self, indicators, sample_candles): """Test SMA with insufficient data.""" period = 50 # More than available candles results = indicators.sma(sample_candles, period) assert len(results) == 0 def test_ema_calculation(self, indicators, sample_candles): """Test Exponential Moving Average calculation.""" period = 10 results = indicators.ema(sample_candles, period) # Should have results starting from period 10 assert len(results) == len(sample_candles) - period + 1 # Check first result first_result = results[0] assert isinstance(first_result, IndicatorResult) assert 'ema' in first_result.values assert first_result.metadata['period'] == period # EMA should be between the range of input prices min_price = min(float(c.close) for c in sample_candles[:period]) max_price = max(float(c.close) for c in sample_candles[:period]) assert min_price <= first_result.values['ema'] <= max_price def test_rsi_calculation(self, indicators, sample_candles): """Test Relative Strength Index calculation.""" period = 14 results = indicators.rsi(sample_candles, period) # Should have results starting from period 15 (period + 1 for price change calculation) assert len(results) == len(sample_candles) - period # Check first result first_result = results[0] assert isinstance(first_result, IndicatorResult) assert 'rsi' in first_result.values assert 0 <= first_result.values['rsi'] <= 100 # RSI should be between 0 and 100 assert first_result.metadata['period'] == period def test_macd_calculation(self, indicators, sample_candles): """Test MACD calculation.""" fast_period = 12 slow_period = 26 signal_period = 9 results = indicators.macd(sample_candles, fast_period, slow_period, signal_period) # MACD needs slow_period + signal_period data points expected_count = len(sample_candles) - slow_period - signal_period + 1 assert len(results) == max(0, expected_count) if results: # Only test if we have results first_result = results[0] assert isinstance(first_result, IndicatorResult) assert 'macd' in first_result.values assert 'signal' in first_result.values assert 'histogram' in first_result.values # Histogram should equal MACD - Signal expected_histogram = first_result.values['macd'] - first_result.values['signal'] assert abs(first_result.values['histogram'] - expected_histogram) < 0.001 def test_bollinger_bands_calculation(self, indicators, sample_candles): """Test Bollinger Bands calculation.""" period = 20 std_dev = 2.0 results = indicators.bollinger_bands(sample_candles, period, std_dev) # Should have results starting from period 20 assert len(results) == len(sample_candles) - period + 1 # Check first result first_result = results[0] assert isinstance(first_result, IndicatorResult) assert 'upper_band' in first_result.values assert 'middle_band' in first_result.values assert 'lower_band' in first_result.values assert 'bandwidth' in first_result.values assert 'percent_b' in first_result.values # Upper band should be greater than middle band, which should be greater than lower band assert first_result.values['upper_band'] > first_result.values['middle_band'] assert first_result.values['middle_band'] > first_result.values['lower_band'] def test_sparse_data_handling(self, indicators, sparse_candles): """Test indicators with sparse data (time gaps).""" period = 5 sma_results = indicators.sma(sparse_candles, period) # Should handle sparse data without issues assert len(sma_results) > 0 # Check that timestamps are preserved correctly for result in sma_results: assert result.timestamp is not None assert isinstance(result.timestamp, datetime) def test_calculate_multiple_indicators(self, indicators, sample_candles): """Test calculating multiple indicators at once.""" config = { 'sma_10': {'type': 'sma', 'period': 10}, 'ema_12': {'type': 'ema', 'period': 12}, 'rsi_14': {'type': 'rsi', 'period': 14}, 'macd': {'type': 'macd'}, 'bb_20': {'type': 'bollinger_bands', 'period': 20} } results = indicators.calculate_multiple_indicators(sample_candles, config) assert len(results) == len(config) assert 'sma_10' in results assert 'ema_12' in results assert 'rsi_14' in results assert 'macd' in results assert 'bb_20' in results # Check that each indicator has appropriate results assert len(results['sma_10']) > 0 assert len(results['ema_12']) > 0 def test_invalid_indicator_config(self, indicators, sample_candles): """Test handling of invalid indicator configuration.""" config = { 'invalid_indicator': {'type': 'unknown_type', 'period': 10} } results = indicators.calculate_multiple_indicators(sample_candles, config) assert 'invalid_indicator' in results assert len(results['invalid_indicator']) == 0 # Should return empty list def test_different_price_columns(self, indicators, sample_candles): """Test indicators with different price columns.""" # Test SMA with 'high' price column sma_high = indicators.sma(sample_candles, 5, price_column='high') sma_close = indicators.sma(sample_candles, 5, price_column='close') assert len(sma_high) == len(sma_close) # High prices should generally give higher SMA values assert sma_high[0].values['sma'] >= sma_close[0].values['sma'] class TestIndicatorHelperFunctions: """Test helper functions for indicators.""" def test_create_default_indicators_config(self): """Test default indicators configuration creation.""" config = create_default_indicators_config() assert isinstance(config, dict) assert 'sma_20' in config assert 'ema_12' in config assert 'rsi_14' in config assert 'macd_default' in config assert 'bollinger_bands_20' in config # Check structure of configurations assert config['sma_20']['type'] == 'sma' assert config['sma_20']['period'] == 20 assert config['macd_default']['type'] == 'macd' def test_validate_indicator_config_valid(self): """Test validation of valid indicator configurations.""" valid_configs = [ {'type': 'sma', 'period': 20}, {'type': 'ema', 'period': 12}, {'type': 'rsi', 'period': 14}, {'type': 'macd'}, {'type': 'bollinger_bands', 'period': 20, 'std_dev': 2.0} ] for config in valid_configs: assert validate_indicator_config(config) == True def test_validate_indicator_config_invalid(self): """Test validation of invalid indicator configurations.""" invalid_configs = [ {}, # Missing type {'type': 'unknown'}, # Invalid type {'type': 'sma', 'period': -5}, # Invalid period {'type': 'sma', 'period': 'not_a_number'}, # Invalid period type {'type': 'bollinger_bands', 'std_dev': -1.0}, # Invalid std_dev ] for config in invalid_configs: assert validate_indicator_config(config) == False class TestIndicatorResultDataClass: """Test IndicatorResult dataclass.""" def test_indicator_result_creation(self): """Test IndicatorResult creation and attributes.""" timestamp = datetime(2024, 1, 1, 12, 0, 0, tzinfo=timezone.utc) values = {'sma': 100.5, 'ema': 101.2} metadata = {'period': 20} result = IndicatorResult( timestamp=timestamp, symbol='BTC-USDT', timeframe='1m', values=values, metadata=metadata ) assert result.timestamp == timestamp assert result.symbol == 'BTC-USDT' assert result.timeframe == '1m' assert result.values == values assert result.metadata == metadata def test_indicator_result_without_metadata(self): """Test IndicatorResult creation without metadata.""" timestamp = datetime(2024, 1, 1, 12, 0, 0, tzinfo=timezone.utc) values = {'rsi': 65.5} result = IndicatorResult( timestamp=timestamp, symbol='ETH-USDT', timeframe='5m', values=values ) assert result.metadata is None if __name__ == '__main__': pytest.main([__file__])