feat: Set up comprehensive Python testing infrastructure

.gitignore

@@ -6,3 +6,29 @@ jeff.py
 */venv/
 data
 venv/
+
+# Testing
+.pytest_cache/
+.coverage
+htmlcov/
+coverage.xml
+.tox/
+
+# Claude Code
+.claude/*
+
+# Virtual environments
+.venv/
+env/
+ENV/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db

pyproject.toml

@@ -0,0 +1,92 @@
+[tool.poetry]
+name = "btcpay-python"
+version = "1.3.0"
+description = "Accept bitcoin with BTCPay"
+authors = ["BTCPay Server Contributors"]
+license = "MIT"
+readme = "README.md"
+homepage = "https://github.com/btcpayserver/btcpay-python"
+repository = "https://github.com/btcpayserver/btcpay-python"
+keywords = ["bitcoin", "payments", "crypto"]
+classifiers = [
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3 :: Only",
+    "Development Status :: 5 - Production/Stable",
+    "Environment :: Web Environment",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+    "Topic :: Office/Business :: Financial"
+]
+packages = [{include = "btcpay"}]
+
+[tool.poetry.dependencies]
+python = "^3.8"
+requests = "*"
+ecdsa = "*"
+
+[tool.poetry.group.test.dependencies]
+pytest = "^7.0.0"
+pytest-cov = "^4.0.0"
+pytest-mock = "^3.10.0"
+
+[tool.poetry.scripts]
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+python_files = ["test_*.py", "*_test.py"]
+python_classes = ["Test*"]
+python_functions = ["test_*"]
+addopts = [
+    "--strict-markers",
+    "--strict-config",
+    "--verbose",
+    "--cov=btcpay",
+    "--cov-report=term-missing",
+    "--cov-report=html:htmlcov",
+    "--cov-report=xml:coverage.xml",
+    "--cov-fail-under=80"
+]
+markers = [
+    "unit: Unit tests",
+    "integration: Integration tests", 
+    "slow: Slow running tests"
+]
+
+[tool.coverage.run]
+source = ["btcpay"]
+omit = [
+    "*/tests/*",
+    "*/test_*",
+    "*/__pycache__/*",
+    "*/venv/*",
+    "*/.venv/*",
+    "setup.py"
+]
+
+[tool.coverage.report]
+exclude_lines = [
+    "pragma: no cover",
+    "def __repr__",
+    "if self.debug:",
+    "if settings.DEBUG",
+    "raise AssertionError",
+    "raise NotImplementedError",
+    "if 0:",
+    "if __name__ == .__main__.:",
+    "class .*\\bProtocol\\):",
+    "@(abc\\.)?abstractmethod"
+]
+show_missing = true
+precision = 2
+
+[tool.coverage.html]
+directory = "htmlcov"
+
+[tool.coverage.xml]
+output = "coverage.xml"

tests/conftest.py

@@ -0,0 +1,68 @@
+import os
+import tempfile
+import pytest
+from unittest.mock import Mock, MagicMock
+
+
+@pytest.fixture
+def temp_dir():
+    """Create a temporary directory for tests."""
+    with tempfile.TemporaryDirectory() as tmpdir:
+        yield tmpdir
+
+
+@pytest.fixture
+def mock_config():
+    """Provide a mock configuration object."""
+    config = {
+        'api_url': 'https://testnet.demo.btcpayserver.org',
+        'pem': 'test_private_key',
+        'tokens': {'merchant': 'test_token'}
+    }
+    return config
+
+
+@pytest.fixture
+def mock_requests():
+    """Provide a mock requests object."""
+    mock = Mock()
+    mock.post.return_value.json.return_value = {'status': 'success'}
+    mock.post.return_value.status_code = 200
+    mock.get.return_value.json.return_value = {'status': 'success'}
+    mock.get.return_value.status_code = 200
+    return mock
+
+
+@pytest.fixture
+def sample_invoice_data():
+    """Provide sample invoice data for testing."""
+    return {
+        'price': 10.0,
+        'currency': 'USD',
+        'orderId': 'test_order_123',
+        'notificationURL': 'https://example.com/webhook'
+    }
+
+
+@pytest.fixture
+def mock_btcpay_client():
+    """Provide a mock BTCPay client instance."""
+    client = MagicMock()
+    client.create_invoice.return_value = {
+        'id': 'test_invoice_id',
+        'url': 'https://testnet.demo.btcpayserver.org/invoice?id=test_invoice_id',
+        'status': 'new'
+    }
+    client.get_invoice.return_value = {
+        'id': 'test_invoice_id',
+        'status': 'paid'
+    }
+    return client
+
+
+@pytest.fixture
+def env_vars(monkeypatch):
+    """Set up environment variables for testing."""
+    monkeypatch.setenv('BTCPAY_HOST', 'https://testnet.demo.btcpayserver.org')
+    monkeypatch.setenv('BTCPAY_PRIVATE_KEY', 'test_private_key')
+    monkeypatch.setenv('BTCPAY_MERCHANT_TOKEN', 'test_merchant_token')

tests/test_setup_validation.py

@@ -0,0 +1,71 @@
+"""Validation tests to ensure the testing infrastructure is properly configured."""
+
+import pytest
+import sys
+import os
+
+
+def test_python_version():
+    """Test that Python version is supported."""
+    assert sys.version_info >= (3, 6), "Python 3.6+ is required"
+
+
+def test_pytest_markers():
+    """Test that custom pytest markers are registered."""
+    expected_markers = ["unit", "integration", "slow"]
+    for marker in expected_markers:
+        assert marker is not None, f"Marker {marker} should be available"
+
+
+def test_btcpay_package_importable():
+    """Test that the btcpay package can be imported."""
+    try:
+        import btcpay
+        assert btcpay is not None
+    except ImportError as e:
+        pytest.fail(f"Could not import btcpay package: {e}")
+
+
+def test_pytest_configured():
+    """Test that pytest is properly configured."""
+    import _pytest.config
+    assert _pytest.config is not None
+
+
+@pytest.mark.unit
+def test_unit_marker():
+    """Test that unit marker works."""
+    assert True
+
+
+@pytest.mark.integration  
+def test_integration_marker():
+    """Test that integration marker works."""
+    assert True
+
+
+@pytest.mark.slow
+def test_slow_marker():
+    """Test that slow marker works."""
+    assert True
+
+
+def test_temp_dir_fixture(temp_dir):
+    """Test that temp_dir fixture works."""
+    assert os.path.exists(temp_dir)
+    assert os.path.isdir(temp_dir)
+
+
+def test_mock_config_fixture(mock_config):
+    """Test that mock_config fixture works."""
+    assert isinstance(mock_config, dict)
+    assert 'api_url' in mock_config
+    assert 'pem' in mock_config
+    assert 'tokens' in mock_config
+
+
+def test_sample_invoice_data_fixture(sample_invoice_data):
+    """Test that sample_invoice_data fixture works."""
+    assert isinstance(sample_invoice_data, dict)
+    assert 'price' in sample_invoice_data
+    assert 'currency' in sample_invoice_data