import pytest, tempfile, os
def run_pytest_dir(files, args=None):
    tmpdir = tempfile.mkdtemp()
    for filename, content in files.items():
        with open(os.path.join(tmpdir, filename), 'w') as f:
            f.write(content)
    result = pytest.main([tmpdir, *(args or [])])
    return result

conftest_code = """
import pytest

@pytest.fixture
def sample_numbers():
    return [3, 1, 4, 1, 5, 9]
"""
test_code = """
def test_sum(sample_numbers):
    assert sum(sample_numbers) == 23

def test_length(sample_numbers):
    assert len(sample_numbers) == 6
"""
exit_code = run_pytest_dir({'conftest.py': conftest_code, 'test_numbers.py': test_code}, ['-v', '--no-header'])
print(exit_code)

conftest_code = """
import pytest

@pytest.fixture
def sample_numbers():
    return [3, 1, 4, 1, 5, 9]
"""
test_a_code = """
def test_max_value(sample_numbers):
    assert max(sample_numbers) == 9
"""
test_b_code = """
def test_min_value(sample_numbers):
    assert min(sample_numbers) == 1
"""
files = {
    'conftest.py': conftest_code,
    'test_a.py': test_a_code,
    'test_b.py': test_b_code,
}
exit_code = run_pytest_dir(files, ['-v', '--no-header'])
print(exit_code)

conftest_code = """
import pytest

events = []

@pytest.fixture(autouse=True)
def track_every_test():
    events.append('setup')
    yield
    events.append('teardown')
"""
test_code = """
from conftest import events

def test_one():
    assert 'setup' in events

def test_two():
    assert events.count('setup') >= 2
"""
exit_code = run_pytest_dir({'conftest.py': conftest_code, 'test_autouse.py': test_code}, ['-v', '--no-header'])
print(exit_code)

conftest_code = """
import pytest

@pytest.fixture
def environment_name():
    return 'production'
"""
test_shared_code = """
def test_uses_shared_environment(environment_name):
    assert environment_name == 'production'
"""
test_override_code = """
import pytest

@pytest.fixture
def environment_name():
    return 'testing'

def test_uses_overridden_environment(environment_name):
    assert environment_name == 'testing'
"""
files = {
    'conftest.py': conftest_code,
    'test_shared.py': test_shared_code,
    'test_override.py': test_override_code,
}
exit_code = run_pytest_dir(files, ['-v', '--no-header'])
print(exit_code)

conftest_code = """
import pytest

class FakeApiClient:
    def __init__(self):
        self.calls = []

    def get(self, path):
        self.calls.append(path)
        return {'path': path, 'status': 'ok'}

@pytest.fixture
def api_client():
    return FakeApiClient()
"""
test_users_code = """
def test_get_users(api_client):
    response = api_client.get('/users')
    assert response['status'] == 'ok'
    assert api_client.calls == ['/users']
"""
test_orders_code = """
def test_get_orders(api_client):
    response = api_client.get('/orders')
    assert response['path'] == '/orders'
"""
files = {
    'conftest.py': conftest_code,
    'test_users.py': test_users_code,
    'test_orders.py': test_orders_code,
}
exit_code = run_pytest_dir(files, ['-v', '--no-header'])
print(exit_code)