# Task ID: 32

**Title:** Create Unit Test Fixtures and Conftest

**Status:** done

**Dependencies:** 1, 9

**Priority:** high

**Description:** Set up pytest fixtures for mocking Graph API, services, and sample data for all unit tests.

**Details:**

Create `tests/conftest.py`:
```python
import pytest
from unittest.mock import AsyncMock

@pytest.fixture
def mock_graph_client():
    client = AsyncMock()
    return client

@pytest.fixture
def mock_config_manager(tmp_path):
    ...

@pytest.fixture
def mock_cache_manager(tmp_path):
    ...

@pytest.fixture
def sample_user_config():
    return {...}  # Valid UserConfiguration JSON

@pytest.fixture
def sample_number_assignment():
    return {...}  # Valid NumberAssignment JSON
```

Create `tests/fixtures/` with:
- sample_users.json
- sample_numbers.json
- locations.csv
- policies.csv
- graph_error_responses.json

**Test Strategy:**

Verify fixtures load correctly, can be used across test modules, provide realistic test data matching Graph API schemas.

---

## Completion Notes (2026-01-30)

### Scope Adjustment

The original task planned centralized fixtures and sample data files. After review, we adopted a **minimal consolidation** approach because:

1. Tests were written incrementally during development with local fixtures
2. 1,139 tests pass with 94% coverage - the approach works well
3. Local fixtures keep test dependencies visible and self-contained
4. Sample JSON/CSV files add loading complexity with minimal benefit

### Changes Made

**Consolidated shared fixture** in `tests/conftest.py`:
- Added `mock_graph_client()` fixture - basic MagicMock for GraphClient
- Removed duplicate definitions from `test_user_service.py` and `test_number_service.py`

**Preserved specialized class-level fixtures**:
- `TestPolicyServiceGetUserPolicies.mock_graph_client` - simple mock
- `TestPolicyServiceAssignPolicy.mock_graph_client` - complex mock with get_paginated behavior

### What Was NOT Implemented (By Design)

- `tests/fixtures/` sample data files (sample_users.json, etc.)
- Centralized `mock_config_manager`, `mock_cache_manager` fixtures
- `sample_user_config`, `sample_number_assignment` fixtures

These remain as local helper functions (e.g., `make_user_dict()`) in test files where they're used, which provides better test readability.

### Current Test Infrastructure

```
tests/
├── conftest.py          # Markers + mock_graph_client fixture
├── fixtures/__init__.py # Empty (reserved for future use)
└── unit/                # 28 test files, 1,139 tests
```
