feat: add CCXTTickerDataProvider for TICKER data sources (#350)#395
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Adds a new CCXTTickerDataProvider that handles DataType.TICKER data sources using CCXT's fetch_ticker API. This resolves the 'No data provider found' error when strategies request ticker data. Changes: - New CCXTTickerDataProvider class in infrastructure/data_providers/ccxt.py - Registered as default data provider alongside CCXTOHLCVDataProvider - Exported from all package __init__.py levels - 15 unit tests with mocked CCXT calls Closes #350
Replace the CI-only skip with a fully mocked CCXT exchange so the download test reads from local CSV data in tests/resources/test_data/ohlcv instead of making network calls.
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Summary
Adds a new
CCXTTickerDataProviderthat handlesDataType.TICKERdata sources using CCXT'sfetch_tickerAPI. Previously, requesting ticker data would fail with "No data provider found for ticker" because only OHLCV providers existed.Changes
CCXTTickerDataProviderclass ininfrastructure/data_providers/ccxt.pyhas_data(): Validates symbol exists on the exchange via CCXTget_data(): Fetches real-time ticker (bid, ask, last, volume, etc.) viaexchange.fetch_ticker()copy(): Creates a configured instance from aDataSourceCCXTOHLCVDataProvideringet_default_data_providers()__init__.pylevels so users canfrom investing_algorithm_framework import CCXTTickerDataProviderCloses #350