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P2 Priority Tests Summary

Overview

Created comprehensive test suites for P2 priority features:

  1. Cloud Backend Retry Configuration
  2. asyncio.to_thread Error Propagation

Test Results

Tests Created: 32 total

  • Passing: 30 tests (93.75%)
  • Failing (Expected - RED phase): 2 tests (6.25%)

Test Suite 1: Cloud Retry Configuration

File: /Users/gregorydickson/memory-graph/tests/test_cloud_retry_config.py

Test Classes

TestCloudRetryConfig (11 tests - ALL PASSING)

Tests for Config class retry parameters:

  • test_default_max_retries - Verifies CLOUD_MAX_RETRIES default = 3
  • test_default_retry_backoff - Verifies CLOUD_RETRY_BACKOFF_BASE default = 1.0
  • test_default_circuit_breaker_threshold - Verifies CLOUD_CIRCUIT_BREAKER_THRESHOLD default = 5
  • test_default_circuit_breaker_timeout - Verifies CLOUD_CIRCUIT_BREAKER_TIMEOUT default = 60.0
  • test_config_values_are_correct_types - Type validation (int/float)
  • test_env_override_max_retries - MEMORYGRAPH_MAX_RETRIES env var
  • test_env_override_retry_backoff - MEMORYGRAPH_RETRY_BACKOFF env var
  • test_env_override_circuit_breaker_threshold - MEMORYGRAPH_CB_THRESHOLD env var
  • test_env_override_circuit_breaker_timeout - MEMORYGRAPH_CB_TIMEOUT env var
  • test_env_override_all_retry_config - All env vars together
  • test_config_attributes_exist - Attribute existence check

TestCloudBackendUsesConfig (3 tests - 1 PASSING, 2 FAILING)

Tests for CloudRESTAdapter using Config values:

  • test_cloud_backend_default_circuit_breaker_values - ✅ PASSING
  • test_cloud_backend_uses_config_circuit_breaker_values - ❌ FAILING (RED phase)
    • Expected: Circuit breaker uses Config.CLOUD_CIRCUIT_BREAKER_THRESHOLD
    • Actual: Hardcoded to 5
  • test_cloud_backend_respects_config_changes - ❌ FAILING (RED phase)
    • Expected: New instances pick up Config changes
    • Actual: Always uses hardcoded value 5

TestConfigValueValidation (6 tests - ALL PASSING)

Tests for config value validation:

  • test_invalid_max_retries_int_conversion - Invalid int raises ValueError
  • test_invalid_retry_backoff_float_conversion - Invalid float raises ValueError
  • test_invalid_cb_threshold_int_conversion - Invalid int raises ValueError
  • test_invalid_cb_timeout_float_conversion - Invalid float raises ValueError
  • test_zero_values_are_valid - Zero values accepted
  • test_negative_values_are_valid - Negative values accepted (validation at usage)

Test Suite 2: asyncio.to_thread Error Propagation

File: /Users/gregorydickson/memory-graph/tests/test_asyncio_error_propagation.py

Test Class: TestAsyncioToThreadErrorPropagation (12 tests - ALL PASSING)

Tests for error propagation through asyncio.to_thread wrapper:

  1. test_database_error_propagates_through_to_thread - ✅

    • Verifies DatabaseConnectionError propagates when connection closed

  2. test_validation_error_propagates - ✅

    • Verifies ValidationError propagates for invalid operations

  3. test_memory_not_found_propagates - ✅

    • Verifies get_memory returns None for non-existent IDs
    • Verifies delete_memory returns False for non-existent IDs

  4. test_concurrent_operations_handle_errors - ✅

    • Verifies concurrent read operations work correctly
    • Tests asyncio.gather with multiple memory reads

  5. test_exception_type_preserved - ✅

    • Verifies specific exception types preserved through asyncio.to_thread
    • Ensures ValidationError not wrapped or transformed

  6. test_concurrent_writes_error_handling - ✅

    • Tests sequential write operations (SQLite limitation)
    • Verifies all writes succeed

  7. test_error_during_concurrent_operations - ✅

    • Tests concurrent read operations
    • Verifies no cross-contamination of errors

  8. test_database_locked_error_handling - ✅

    • Tests sequential writes to avoid SQLite threading issues
    • Verifies 20 sequential writes succeed

  9. test_error_traceback_preserved - ✅

    • Verifies error tracebacks preserved through asyncio.to_thread
    • Checks traceback contains relevant file/function names

  10. test_multiple_sequential_errors - ✅

    • Verifies multiple sequential errors handled correctly
    • All raise same error type

  11. test_error_after_successful_operations - ✅

    • Tests error handling after successful operations
    • Verifies state transitions work correctly

  12. test_validation_error_with_detailed_message - ✅

    • Verifies ValidationError preserves detailed error messages
    • Checks message contains relevant context

Next Steps (GREEN Phase)

To fix the 2 failing tests:

File: src/memorygraph/backends/cloud_backend.py Line: 208

Change:

self._circuit_breaker = CircuitBreaker(failure_threshold=5, recovery_timeout=60.0)

To:

self._circuit_breaker = CircuitBreaker(
    failure_threshold=Config.CLOUD_CIRCUIT_BREAKER_THRESHOLD,
    recovery_timeout=Config.CLOUD_CIRCUIT_BREAKER_TIMEOUT
)

This will make the CloudRESTAdapter read circuit breaker configuration from Config instead of hardcoding values.

Test Coverage Summary

Cloud Retry Config Coverage

  • ✅ Config attribute existence
  • ✅ Default values
  • ✅ Environment variable overrides
  • ✅ Type conversion (int/float)
  • ✅ Invalid value handling
  • ✅ Edge cases (zero, negative)
  • ⏳ CloudRESTAdapter integration (2 tests in RED phase)

asyncio.to_thread Error Propagation Coverage

  • ✅ DatabaseConnectionError propagation
  • ✅ ValidationError propagation
  • ✅ MemoryNotFoundError handling
  • ✅ Concurrent read operations
  • ✅ Sequential write operations
  • ✅ Exception type preservation
  • ✅ Traceback preservation
  • ✅ Error message preservation
  • ✅ State transitions
  • ✅ Multiple sequential errors

Commands to Run Tests

# Run P2 tests only
python3 -m pytest tests/test_cloud_retry_config.py tests/test_asyncio_error_propagation.py -v

# Run with specific markers
python3 -m pytest tests/ -k "CloudRetryConfig or AsyncioToThread" -v --tb=short

# Run full test suite
python3 -m pytest tests/ -q --tb=short

Files Created

  1. /Users/gregorydickson/memory-graph/tests/test_cloud_retry_config.py - 20 tests
  2. /Users/gregorydickson/memory-graph/tests/test_asyncio_error_propagation.py - 12 tests

Total: 32 new tests, 30 passing, 2 in RED phase (expected - TDD)