orchard/backend/tests/conftest.py

"""
Test configuration and fixtures for Orchard backend tests.

This module provides:
- Database fixtures with test isolation
- Mock S3 storage using moto
- Shared pytest fixtures
"""

import os
import pytest
import io
from typing import Generator
from unittest.mock import MagicMock

# Set test environment defaults before importing app modules
# Use setdefault to NOT override existing env vars (from docker-compose)
os.environ.setdefault("ORCHARD_DATABASE_HOST", "localhost")
os.environ.setdefault("ORCHARD_DATABASE_PORT", "5432")
os.environ.setdefault("ORCHARD_DATABASE_USER", "test")
os.environ.setdefault("ORCHARD_DATABASE_PASSWORD", "test")
os.environ.setdefault("ORCHARD_DATABASE_DBNAME", "orchard_test")
os.environ.setdefault("ORCHARD_S3_ENDPOINT", "http://localhost:9000")
os.environ.setdefault("ORCHARD_S3_BUCKET", "test-bucket")
os.environ.setdefault("ORCHARD_S3_ACCESS_KEY_ID", "test")
os.environ.setdefault("ORCHARD_S3_SECRET_ACCESS_KEY", "test")

# Re-export factory functions for backward compatibility
from tests.factories import (
    create_test_file,
    compute_sha256,
    compute_md5,
    compute_sha1,
    upload_test_file,
    TEST_CONTENT_HELLO,
    TEST_HASH_HELLO,
    TEST_MD5_HELLO,
    TEST_SHA1_HELLO,
    TEST_CONTENT_EMPTY,
    TEST_CONTENT_BINARY,
    TEST_HASH_BINARY,
    get_s3_client,
    get_s3_bucket,
    list_s3_objects_by_hash,
    count_s3_objects_by_prefix,
    s3_object_exists,
    delete_s3_object_by_hash,
)


# =============================================================================
# Mock Storage Fixtures
# =============================================================================


class MockS3Client:
    """Mock S3 client for unit testing without actual S3/MinIO."""

    def __init__(self):
        self.objects = {}  # key -> content
        self.bucket = "test-bucket"

    def put_object(self, Bucket: str, Key: str, Body: bytes) -> dict:
        self.objects[Key] = Body
        return {"ETag": f'"{compute_md5(Body)}"'}

    def get_object(self, Bucket: str, Key: str, **kwargs) -> dict:
        if Key not in self.objects:
            raise Exception("NoSuchKey")
        content = self.objects[Key]
        return {
            "Body": io.BytesIO(content),
            "ContentLength": len(content),
        }

    def head_object(self, Bucket: str, Key: str) -> dict:
        if Key not in self.objects:
            from botocore.exceptions import ClientError

            error_response = {"Error": {"Code": "404", "Message": "Not Found"}}
            raise ClientError(error_response, "HeadObject")
        content = self.objects[Key]
        return {
            "ContentLength": len(content),
            "ETag": f'"{compute_md5(content)}"',
        }

    def delete_object(self, Bucket: str, Key: str) -> dict:
        if Key in self.objects:
            del self.objects[Key]
        return {}

    def head_bucket(self, Bucket: str) -> dict:
        return {}

    def create_multipart_upload(self, Bucket: str, Key: str) -> dict:
        return {"UploadId": "test-upload-id"}

    def upload_part(
        self, Bucket: str, Key: str, UploadId: str, PartNumber: int, Body: bytes
    ) -> dict:
        return {"ETag": f'"{compute_md5(Body)}"'}

    def complete_multipart_upload(
        self, Bucket: str, Key: str, UploadId: str, MultipartUpload: dict
    ) -> dict:
        return {"ETag": '"test-etag"'}

    def abort_multipart_upload(self, Bucket: str, Key: str, UploadId: str) -> dict:
        return {}

    def generate_presigned_url(
        self, ClientMethod: str, Params: dict, ExpiresIn: int
    ) -> str:
        return f"https://test-bucket.s3.amazonaws.com/{Params['Key']}?presigned=true"


@pytest.fixture
def mock_s3_client() -> MockS3Client:
    """Provide a mock S3 client for unit tests."""
    return MockS3Client()


@pytest.fixture
def mock_storage(mock_s3_client):
    """
    Provide a mock storage instance for unit tests.

    Uses the MockS3Client to avoid actual S3/MinIO calls.
    """
    from app.storage import S3Storage

    storage = S3Storage.__new__(S3Storage)
    storage.client = mock_s3_client
    storage.bucket = "test-bucket"
    storage._active_uploads = {}

    return storage


# =============================================================================
# Database Fixtures (for integration tests)
# =============================================================================


@pytest.fixture(scope="session")
def test_db_url():
    """Get the test database URL."""
    return (
        f"postgresql://{os.environ['ORCHARD_DATABASE_USER']}:"
        f"{os.environ['ORCHARD_DATABASE_PASSWORD']}@"
        f"{os.environ['ORCHARD_DATABASE_HOST']}:"
        f"{os.environ['ORCHARD_DATABASE_PORT']}/"
        f"{os.environ['ORCHARD_DATABASE_DBNAME']}"
    )


# =============================================================================
# HTTP Client Fixtures (for API tests)
# =============================================================================


@pytest.fixture
def test_app():
    """
    Create a test FastAPI application.

    Note: This requires the database to be available for integration tests.
    For unit tests, use mock_storage fixture instead.
    """
    from fastapi.testclient import TestClient
    from app.main import app

    return TestClient(app)


# =============================================================================
# Integration Test Fixtures
# =============================================================================


@pytest.fixture
def integration_client():
    """
    Create an authenticated test client for integration tests.

    Uses the real database and MinIO from docker-compose.local.yml.
    Authenticates as admin for write operations.
    """
    from httpx import Client

    # Connect to the running orchard-server container
    base_url = os.environ.get("ORCHARD_TEST_URL", "http://localhost:8080")

    with Client(base_url=base_url, timeout=30.0) as client:
        # Login as admin to enable write operations
        login_response = client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )
        # If login fails, tests will fail - that's expected if auth is broken
        if login_response.status_code != 200:
            # Try to continue without auth for backward compatibility
            pass
        yield client


@pytest.fixture
def unique_test_id():
    """Generate a unique ID for test isolation."""
    import uuid

    return f"test-{uuid.uuid4().hex[:8]}"


@pytest.fixture
def test_project(integration_client, unique_test_id):
    """
    Create a test project and clean it up after the test.

    Yields the project name.
    """
    project_name = f"test-project-{unique_test_id}"

    # Create project
    response = integration_client.post(
        "/api/v1/projects",
        json={"name": project_name, "description": "Test project", "is_public": True},
    )
    assert response.status_code == 200, f"Failed to create project: {response.text}"

    yield project_name

    # Cleanup: delete project
    try:
        integration_client.delete(f"/api/v1/projects/{project_name}")
    except Exception:
        pass  # Ignore cleanup errors


@pytest.fixture
def test_package(integration_client, test_project, unique_test_id):
    """
    Create a test package within a test project.

    Yields (project_name, package_name) tuple.
    """
    package_name = f"test-package-{unique_test_id}"

    # Create package
    response = integration_client.post(
        f"/api/v1/project/{test_project}/packages",
        json={"name": package_name, "description": "Test package"},
    )
    assert response.status_code == 200, f"Failed to create package: {response.text}"

    yield (test_project, package_name)

    # Cleanup handled by test_project fixture (cascade delete)


@pytest.fixture
def test_content():
    """
    Generate unique test content for each test.

    Returns (content_bytes, expected_sha256) tuple.
    """
    import uuid

    content = f"test-content-{uuid.uuid4().hex}".encode()
    sha256 = compute_sha256(content)
    return (content, sha256)