# Phase 2 Test Coverage Summary

## Overview

Comprehensive test suite for Phase 2: Enhanced AgentBuilder.publishes() API

**Test File**: `tests/test_agent_builder.py`
**Total Tests**: 39
**Current Status**: 37 FAILED, 2 PASSED (Expected - TDD approach)
**Implementation Status**: NOT STARTED (Tests written first)

---

## Test Scenario Coverage

### 1. Single .publishes() Call with Multiple Types (2 tests)
- ✅ `test_publishes_single_call_multiple_types` - Creates ONE OutputGroup with 3 outputs
- ✅ Test verifies OutputGroup structure and output ordering

### 2. Multiple .publishes() Calls Create Separate Groups (2 tests)
- ✅ `test_publishes_multiple_calls_create_groups` - Two calls = TWO groups
- ✅ `test_publishes_three_separate_calls` - Three calls = THREE groups

### 3. Duplicate Type Counting (2 tests)
- ✅ `test_publishes_duplicate_counting` - .publishes(A, A, A) → 1 group, 3 outputs
- ✅ `test_publishes_mixed_duplicates` - .publishes(A, B, A, C, B) preserves order

### 4. fan_out Parameter (Sugar Syntax) (5 tests)
- ✅ `test_publishes_fan_out_sugar` - .publishes(A, fan_out=3) → count=3
- ✅ `test_publishes_fan_out_applies_to_all_types` - fan_out affects all types
- ✅ `test_publishes_fan_out_one_is_default` - fan_out=1 same as no fan_out
- ✅ `test_publishes_fan_out_zero_raises` - ValueError for fan_out=0
- ✅ `test_publishes_fan_out_negative_raises` - ValueError for negative fan_out

### 5. where Parameter (Filter Predicate) (3 tests)
- ✅ `test_publishes_where_predicate` - Stores filter_predicate correctly
- ✅ `test_publishes_where_with_lambda` - Lambda predicates work
- ✅ `test_publishes_where_none_by_default` - Default is None

### 6. Dynamic Visibility Parameter (3 tests)
- ✅ `test_publishes_dynamic_visibility` - Callable visibility stored
- ✅ `test_publishes_static_visibility` - Static visibility stored
- ✅ `test_publishes_visibility_default_is_public` - Default is PublicVisibility

### 7. validate Parameter (3 tests)
- ✅ `test_publishes_validate_single` - Single callable validator
- ✅ `test_publishes_validate_list_of_tuples` - List of (callable, msg) tuples
- ✅ `test_publishes_validate_none_by_default` - Default is None

### 8. description Parameter (Group Description) (3 tests)
- ✅ `test_publishes_group_description` - Stores group description
- ✅ `test_publishes_description_applies_to_group` - Description at group level
- ✅ `test_publishes_description_none_by_default` - Default is None

### 9. Combined Parameters (2 tests)
- ✅ `test_publishes_combined_parameters` - fan_out + where + validate + description
- ✅ `test_publishes_all_sugar_parameters_with_multiple_types` - All params with multiple types

### 10. Error Validation (3 tests)
- ✅ `test_publishes_fan_out_zero_is_invalid` - Clear error message
- ✅ `test_publishes_fan_out_negative_is_invalid` - Validates negative values
- ✅ `test_publishes_large_fan_out_is_valid` - No upper limit (fan_out=1000 valid)

### 11. Backwards Compatibility (4 tests)
- ✅ `test_publishes_backwards_compatibility` - Old .publishes(A) works
- ✅ `test_publishes_backwards_compatibility_multiple_types` - Old .publishes(A, B, C)
- ✅ `test_publishes_backwards_compatibility_with_visibility` - Old visibility param
- ✅ `test_publishes_chaining_with_other_methods` - Chain with .consumes()

### 12. PublishBuilder Return Value (2 tests)
- ✅ `test_publishes_returns_publish_builder` - Returns chainable builder
- ✅ `test_publishes_builder_chaining` - Chain with .only_for()

### 13. Edge Cases and Special Scenarios (3 tests)
- ✅ `test_publishes_empty_call_not_allowed` - .publishes() with no types
- ✅ `test_publishes_with_none_types_filtered` - None values filtered/handled
- ✅ `test_publishes_preserves_group_order` - Multiple calls preserve order
- ✅ `test_publishes_fan_out_with_duplicates` - fan_out + duplicates

### 14. Integration with Agent Lifecycle (2 tests)
- ✅ `test_publishes_agent_can_be_registered` - Agent registration works
- ✅ `test_publishes_group_structure_complete` - OutputGroup has all required fields

---

## Required Implementation Changes

Based on test requirements, the following must be implemented:

### 1. Agent Class Changes
```python
# In Agent.__init__()
- self.outputs: list[AgentOutput] = []  # REMOVE THIS
+ self.output_groups: list[OutputGroup] = []  # ADD THIS
```

### 2. AgentBuilder.publishes() Signature
```python
def publishes(
    self,
    *types: type[BaseModel],
    visibility: Visibility | Callable[[BaseModel], Visibility] | None = None,
    fan_out: int | None = None,
    where: Callable[[BaseModel], bool] | None = None,
    validate: Callable[[BaseModel], bool] | list[tuple[Callable, str]] | None = None,
    description: str | None = None
) -> PublishBuilder:
```

### 3. OutputGroup Creation Logic
- Collect all types from `*types`
- Apply fan_out to all outputs if specified
- Create AgentOutput for each type with predicates
- Create OutputGroup containing all outputs
- Append to `agent.output_groups`

### 4. Validation Logic
- Validate fan_out >= 1 (raise ValueError if not)
- Allow None values to be filtered or handled
- Store predicates and descriptions correctly

---

## Expected Test Results After Implementation

After implementing the enhanced .publishes() API:
- **All 39 tests should PASS**
- **No test should be skipped or modified** (unless design decision changes)
- **Error messages should be clear and actionable**

---

## Key Design Decisions Verified by Tests

1. **Multiple .publishes() calls = Multiple OutputGroups**
   - Tests verify each call creates a separate group
   - Group order is preserved

2. **Single .publishes(A, B, C) = One OutputGroup**
   - Tests verify all types in one group
   - Output order preserved

3. **Duplicate counting handled**
   - Tests verify .publishes(A, A, A) creates 3 separate outputs
   - Alternative: .publishes(A, fan_out=3) creates 1 output with count=3

4. **Sugar parameters work together**
   - Tests verify all params can be combined
   - Tests verify params apply correctly to all types in group

5. **Backwards compatibility maintained**
   - Tests verify existing usage patterns still work
   - Tests verify output_groups replaces outputs

6. **Error handling is robust**
   - Tests verify clear error messages for invalid inputs
   - Tests verify edge cases handled gracefully

---

## Next Steps

1. ✅ **Phase 2 Tests Complete** - This file
2. ⏭️ **Implement Enhanced .publishes() API** - Follow architecture-changes.md
3. ⏭️ **Run Tests Until All Pass** - TDD cycle
4. ⏭️ **Phase 3: Multiple Engine Calls** - Next phase

---

## Compliance Checklist

- ✅ All 11 required test scenarios from PLAN.md implemented
- ✅ Tests cover success cases, error cases, and edge cases
- ✅ Tests verify data structures (OutputGroup, AgentOutput)
- ✅ Tests verify API parameters (fan_out, where, validate, description)
- ✅ Tests verify backwards compatibility
- ✅ Tests use descriptive names and docstrings
- ✅ Tests follow existing project patterns (pytest, flock_type)
- ✅ Tests are comprehensive (39 tests covering all scenarios)

---

## Test Execution Commands

```bash
# Run all Phase 2 tests
pytest tests/test_agent_builder.py -v

# Run specific scenario
pytest tests/test_agent_builder.py::test_publishes_fan_out_sugar -v

# Run with coverage
pytest tests/test_agent_builder.py --cov=flock.agent --cov-report=term-missing

# Run only failed tests
pytest tests/test_agent_builder.py --lf -v
```

---

**Date Created**: 2025-10-15
**Phase**: Phase 2 - Enhanced AgentBuilder.publishes() API
**Status**: Tests Complete, Implementation Pending
**Test File**: `C:\workspace\whiteduck\flock\tests\test_agent_builder.py`
