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-- log capability skip fixture.
--
-- Reads MCP_HTTP_URL from the environment, connects to a server that has
-- NO logging capability, then checks that on_log registration is skipped
-- gracefully (no error thrown).
--
-- This validates case (c): log_to_stderr=true with no logging capability
-- silently skips registration and emits a log.info message.
local url = os.getenv("MCP_HTTP_URL")
assert(url and url ~= "", "MCP_HTTP_URL must be set")
mcp.connect_http("nolog", url)
print("CONNECT_HTTP_OK")
-- Check server_info to confirm no logging capability.
local si = mcp.server_info("nolog")
assert(si.ok == true, "server_info must succeed: " .. tostring(si.error))
local caps = (si.server_info and si.server_info.capabilities) or {}
local has_logging = caps.logging ~= nil
if has_logging then
-- This server unexpectedly has logging — skip the no-cap test.
print("HAS_LOGGING_UNEXPECTED")
else
-- Server has no logging capability; mcp.on_log call should be skipped by
-- connect_mcp_servers. Verify that calling the gate path directly does not
-- throw, and the callback is never invoked.
local callback_fired = false
-- Directly calling mcp.on_log on a server with no logging capability is not
-- what we want to test — we want to test the Lua gate. Simulate by checking
-- the gate condition (same as connect_mcp_servers does).
if caps.logging ~= nil then
mcp.on_log("nolog", function()
callback_fired = true
end)
end
-- callback_fired must remain false: gate skipped registration.
assert(not callback_fired, "on_log callback must not fire when no logging capability")
print("SKIP_OK")
end
print("FIXTURE_DONE")