0ad9a89d97
## Motivation and Context MCP 2025-11-25 spec defines a `_meta` general field on many types, but the Ruby SDK only exposed it on `Tool` and `Prompt`. To attach metadata (e.g. MCP Apps CSP hints on resource contents), consumers had to subclass existing classes and override `to_h`. Add a `meta:` keyword argument and `_meta` serialization to: - `Resource::Contents`, `Resource::TextContents`, `Resource::BlobContents` - `Resource`, `ResourceTemplate` - `Content::Text`, `Content::Image`, `Content::Audio`, `Content::EmbeddedResource` - `Tool::Response` (`CallToolResult`) - `Prompt::Result` (`GetPromptResult`) This aligns the Ruby SDK with the Python and TypeScript SDKs, which both expose `_meta` on these types. Resolves #308. ## How Has This Been Tested? Added unit tests for each updated class covering two patterns: `_meta` present (asserts the value is reflected in `to_h[:_meta]`) and `_meta` omitted (asserts no `:_meta` key in `to_h`, i.e., `.compact` behavior). All existing tests continue to pass, and `rake rubocop` is clean. ## Breaking Changes None. All new `meta:` parameters are optional keyword arguments defaulting to `nil`. The `to_h` output stays backward-compatible because `nil` values are removed by the existing `.compact` call, so existing callers require no changes.
57 lines
1.9 KiB
Ruby
57 lines
1.9 KiB
Ruby
# frozen_string_literal: true
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require "test_helper"
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module MCP
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class ResourceTemplateTest < ActiveSupport::TestCase
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test "#to_h does not have `:icons` key when icons is empty" do
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resource_template = ResourceTemplate.new(
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uri_template: "file:///{path}",
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name: "resource_template_without_icons",
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description: "a resource template without icons",
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)
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refute resource_template.to_h.key?(:icons)
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end
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test "#to_h does not have `:icons` key when icons is nil" do
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resource_template = ResourceTemplate.new(
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uri_template: "file:///{path}",
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name: "resource_template_without_icons",
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description: "a resource template without icons",
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icons: nil,
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)
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refute resource_template.to_h.key?(:icons)
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end
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test "#to_h includes icons when present" do
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resource_template = ResourceTemplate.new(
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uri_template: "file:///{path}",
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name: "resource_template_with_icons",
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description: "a resource template with icons",
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icons: [Icon.new(mime_type: "image/png", sizes: ["48x48"], src: "https://example.com", theme: "light")],
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)
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expected_icons = [{ mimeType: "image/png", sizes: ["48x48"], src: "https://example.com", theme: "light" }]
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assert_equal expected_icons, resource_template.to_h[:icons]
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end
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test "#to_h omits _meta when nil" do
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resource_template = ResourceTemplate.new(uri_template: "file:///{path}", name: "template_without_meta")
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refute resource_template.to_h.key?(:_meta)
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end
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test "#to_h includes _meta when present" do
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meta = { "application/vnd.ant.mcp-app" => { "csp" => "default-src 'self'" } }
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resource_template = ResourceTemplate.new(
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uri_template: "file:///{path}",
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name: "template_with_meta",
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meta: meta,
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)
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assert_equal meta, resource_template.to_h[:_meta]
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end
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end
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end
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