test-generation

• Generate unit tests for functions and classes
• Create integration tests for APIs and services
• Build test fixtures and mocks
• Cover edge cases and error conditions

```python

import pytest

class TestClassName:

"""Tests for ClassName."""

def test_method_success(self):

"""Test method with valid input."""

result = function_under_test(valid_input)

assert result == expected_output

def test_method_edge_case(self):

"""Test method with edge case."""

result = function_under_test(edge_case_input)

assert result == edge_case_output

def test_method_error(self):

"""Test method raises error on invalid input."""

with pytest.raises(ValueError):

function_under_test(invalid_input)

```

| Type | Target |

|------|--------|

| Unit tests | 80%+ line coverage |

| Branch coverage | 70%+ |

| Critical paths | 100% |

1. Happy path - Normal expected usage
2. Edge cases - Boundary values, empty inputs
3. Error cases - Invalid inputs, exceptions
4. Integration - Component interactions

```python

@pytest.fixture

def sample_user():

return User(name="Test User", email="test@example.com")

@pytest.fixture

def mock_database(mocker):

return mocker.patch("app.db.connection")

```