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foxhunt/testing/test-common
jgrusewski e2a0576ef5 docs: create/update README.md for all services, CLI, and testing crates
Create 3 missing service READMEs (api_gateway, data_acquisition_service,
trading_agent_service). Create bin/fxt/README.md. Create
testing/service-integration/README.md. Update existing service and testing
READMEs to standard template. Delete 4 subdirectory READMEs from
testing/integration/ and testing/e2e/.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-01 22:50:38 +01:00
..

test-common

Shared test fixtures, builders, and assertions for the Foxhunt workspace. Consolidates duplicate test code across 39+ files.

Key Types

  • TestDb -- isolated test database with automatic cleanup
  • MockOrderBuilder -- fluent order/trade builder
  • BarBuilder -- OHLCV bar generation with realistic price movements
  • PositionBuilder -- mock positions with P&L calculations

Fixtures

  • generate_ohlcv_bars() -- realistic OHLCV data
  • generate_random_walk() -- Monte Carlo price simulations
  • generate_crisis_returns() -- 2008 crisis patterns
  • generate_order_book() -- order book levels

Assertions

  • assert_approx_eq! -- percentage tolerance comparison
  • assert_ohlc_valid -- OHLC bar validation
  • assert_var_exceedances -- VaR exceedance checks

Usage

[dev-dependencies]
test_common = { path = "../../testing/test-common" }