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"""Tests for health check server."""
import pytest
from prometheus_client import CollectorRegistry
@pytest.fixture
def registry():
return CollectorRegistry()
def make_server(service_name="test-service", port=8080, registry=None):
from shared.healthcheck import HealthCheckServer
return HealthCheckServer(service_name, port=port, registry=registry)
def test_init_defaults(registry):
"""HealthCheckServer initialises with service name and port."""
server = make_server("my-service", registry=registry)
assert server.service_name == "my-service"
assert server.port == 8080
assert server._checks == {}
def test_register_check(registry):
"""register_check stores an async callable."""
server = make_server(registry=registry)
async def check_redis():
return True
server.register_check("redis", check_redis)
assert "redis" in server._checks
assert server._checks["redis"] is check_redis
@pytest.mark.asyncio
async def test_run_checks_all_pass(registry):
"""run_checks returns 'ok' when all checks pass."""
server = make_server(registry=registry)
async def ok_check():
return True
server.register_check("db", ok_check)
server.register_check("redis", ok_check)
result = await server.run_checks()
assert result["status"] == "ok"
assert result["service"] == "test-service"
assert "uptime_seconds" in result
assert result["checks"]["db"] == "ok"
assert result["checks"]["redis"] == "ok"
@pytest.mark.asyncio
async def test_run_checks_one_fails(registry):
"""run_checks returns 'degraded' when a check fails."""
server = make_server(registry=registry)
async def ok_check():
return True
async def bad_check():
raise ConnectionError("down")
server.register_check("db", ok_check)
server.register_check("redis", bad_check)
result = await server.run_checks()
assert result["status"] == "degraded"
assert result["checks"]["db"] == "ok"
assert "fail" in result["checks"]["redis"]
@pytest.mark.asyncio
async def test_run_checks_false_is_fail(registry):
"""run_checks treats False return as failure."""
server = make_server(registry=registry)
async def false_check():
return False
server.register_check("cache", false_check)
result = await server.run_checks()
assert result["status"] == "degraded"
assert result["checks"]["cache"] == "fail"
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