ruby-sdk/test/mcp/methods_test.rb
Koichi ITO 0c729d0a2d Use autoload to defer loading of unused subsystems
## Motivation and Context

`lib/mcp.rb` currently declares all `require_relative` statements in one place.
As a result, Server and Client are both loaded, the stdio and Streamable HTTP
transports are both loaded, and Tool, Prompt, and Resource are all loaded,
regardless of which components are actually used.

These components are selected by the user depending on their use case,
so loading everything upfront is unnecessary.

Using `autoload` for selected constants defers loading until the constant
is actually referenced, so only the subsystems required by the user are loaded.

## How Has This Been Tested?

All existing tests pass unchanged.

## Breaking Change

None. This change only defers loading of unused components.
2026-03-12 14:08:27 +09:00

85 lines
4.6 KiB
Ruby

# frozen_string_literal: true
require "test_helper"
require "mcp/methods"
module MCP
class MethodsTest < ActiveSupport::TestCase
class << self
def ensure_capability_raises_error_for(method, required_capability_name:, capabilities: {})
test("ensure_capability! for #{method} raises an error if #{required_capability_name} capability is not present") do
error = assert_raises(Methods::MissingRequiredCapabilityError) do
Methods.ensure_capability!(method, capabilities)
end
assert_equal("Server does not support #{required_capability_name} (required for #{method})", error.message)
end
end
def ensure_capability_does_not_raise_for(method, capabilities: {})
test("ensure_capability! does not raise for #{method}") do
assert_nothing_raised { Methods.ensure_capability!(method, capabilities) }
end
end
end
# Server methods and notifications
ensure_capability_does_not_raise_for Methods::INITIALIZE
ensure_capability_raises_error_for Methods::PROMPTS_LIST, required_capability_name: "prompts"
ensure_capability_raises_error_for Methods::PROMPTS_GET, required_capability_name: "prompts"
ensure_capability_raises_error_for Methods::NOTIFICATIONS_PROMPTS_LIST_CHANGED, required_capability_name: "prompts"
ensure_capability_raises_error_for Methods::NOTIFICATIONS_PROMPTS_LIST_CHANGED,
required_capability_name: "prompts.listChanged",
capabilities: { prompts: {} }
ensure_capability_raises_error_for Methods::RESOURCES_LIST, required_capability_name: "resources"
ensure_capability_raises_error_for Methods::RESOURCES_READ, required_capability_name: "resources"
ensure_capability_raises_error_for Methods::RESOURCES_TEMPLATES_LIST, required_capability_name: "resources"
ensure_capability_raises_error_for Methods::NOTIFICATIONS_RESOURCES_LIST_CHANGED, required_capability_name: "resources"
ensure_capability_raises_error_for Methods::NOTIFICATIONS_RESOURCES_LIST_CHANGED,
required_capability_name: "resources.listChanged",
capabilities: { resources: {} }
ensure_capability_raises_error_for Methods::RESOURCES_SUBSCRIBE, required_capability_name: "resources"
ensure_capability_raises_error_for Methods::RESOURCES_SUBSCRIBE,
required_capability_name: "resources.subscribe",
capabilities: { resources: {} }
ensure_capability_raises_error_for Methods::RESOURCES_UNSUBSCRIBE, required_capability_name: "resources"
ensure_capability_raises_error_for Methods::RESOURCES_UNSUBSCRIBE,
required_capability_name: "resources.subscribe",
capabilities: { resources: {} }
ensure_capability_raises_error_for Methods::NOTIFICATIONS_RESOURCES_UPDATED, required_capability_name: "resources"
ensure_capability_raises_error_for Methods::NOTIFICATIONS_RESOURCES_UPDATED,
required_capability_name: "resources.subscribe",
capabilities: { resources: {} }
ensure_capability_raises_error_for Methods::TOOLS_LIST, required_capability_name: "tools"
ensure_capability_raises_error_for Methods::TOOLS_CALL, required_capability_name: "tools"
ensure_capability_raises_error_for Methods::NOTIFICATIONS_TOOLS_LIST_CHANGED, required_capability_name: "tools"
ensure_capability_raises_error_for Methods::NOTIFICATIONS_TOOLS_LIST_CHANGED,
required_capability_name: "tools.listChanged",
capabilities: { tools: {} }
ensure_capability_raises_error_for Methods::LOGGING_SET_LEVEL, required_capability_name: "logging"
ensure_capability_raises_error_for Methods::NOTIFICATIONS_MESSAGE, required_capability_name: "logging"
ensure_capability_raises_error_for Methods::COMPLETION_COMPLETE, required_capability_name: "completions"
# Client methods and notifications
ensure_capability_does_not_raise_for Methods::NOTIFICATIONS_INITIALIZED
ensure_capability_raises_error_for Methods::ROOTS_LIST, required_capability_name: "roots"
ensure_capability_raises_error_for Methods::NOTIFICATIONS_ROOTS_LIST_CHANGED, required_capability_name: "roots"
ensure_capability_raises_error_for Methods::NOTIFICATIONS_ROOTS_LIST_CHANGED,
required_capability_name: "roots.listChanged",
capabilities: { roots: {} }
ensure_capability_raises_error_for Methods::SAMPLING_CREATE_MESSAGE, required_capability_name: "sampling"
ensure_capability_raises_error_for Methods::ELICITATION_CREATE, required_capability_name: "elicitation"
# Methods and notifications of both server and client
ensure_capability_does_not_raise_for Methods::PING
ensure_capability_does_not_raise_for Methods::NOTIFICATIONS_PROGRESS
ensure_capability_does_not_raise_for Methods::NOTIFICATIONS_CANCELLED
end
end