opencode/packages/codemode/test/signature.test.ts

336 lines
12 KiB
TypeScript

import { describe, expect, test } from "bun:test"
import { Effect, Schema } from "effect"
import { CodeMode } from "../src/index.js"
import { Tool, inputTypeScript, jsonSchemaToTypeScript, outputTypeScript } from "../src/tool.js"
// A raw JSON Schema tool in the shape an MCP adapter produces: render-only input schema
// whose property descriptions and constraints must surface as JSDoc in pretty signatures.
const listIssues = Tool.make({
description: "List issues in a repository",
input: {
type: "object",
properties: {
owner: { type: "string", description: "Repository owner" },
after: { type: "string", description: "Cursor from the previous response's pageInfo" },
perPage: { type: "number", description: "Results per page", default: 30 },
labels: { type: "array", items: { type: "string" }, description: "Filter by labels", minItems: 1, maxItems: 10 },
state: { type: "string", enum: ["open", "closed"] },
},
required: ["owner"],
},
run: () => Effect.succeed("[]"),
})
// An Effect Schema tool whose field annotations must flow through the emitted JSON Schema.
const lookupOrder = Tool.make({
description: "Look up an order",
input: Schema.Struct({
id: Schema.String.annotate({ description: "Order identifier" }),
verbose: Schema.optionalKey(Schema.Boolean),
}),
output: Schema.Struct({
status: Schema.String.annotate({ description: "Current order status" }),
}),
run: () => Effect.succeed({ status: "open" }),
})
describe("pretty signature rendering", () => {
test("described fields get JSDoc comments; undescribed and untagged fields get none", () => {
expect(inputTypeScript(listIssues, true)).toBe(
[
"{",
" /** Repository owner */",
" owner: string",
" /** Cursor from the previous response's pageInfo */",
" after?: string",
" /**",
" * Results per page",
" * @default 30",
" */",
" perPage?: number",
" /**",
" * Filter by labels",
" * @minItems 1",
" * @maxItems 10",
" */",
" labels?: Array<string>",
' state?: "open" | "closed"',
"}",
].join("\n"),
)
})
test("compact mode output is unchanged by the pretty machinery", () => {
expect(inputTypeScript(listIssues)).toBe(
'{ owner: string; after?: string; perPage?: number; labels?: Array<string>; state?: "open" | "closed" }',
)
expect(inputTypeScript(lookupOrder)).toBe("{ id: string; verbose?: boolean }")
expect(outputTypeScript(lookupOrder)).toBe("{ status: string }")
})
test("nested objects recurse with increasing indent and their own JSDoc", () => {
const pretty = jsonSchemaToTypeScript(
{
type: "object",
properties: {
filter: {
type: "object",
description: "Search filter",
properties: { state: { type: "string", description: "Issue state" } },
},
},
},
true,
)
expect(pretty).toBe(
[
"{",
" /** Search filter */",
" filter?: {",
" /** Issue state */",
" state?: string",
" }",
"}",
].join("\n"),
)
})
test("Effect Schema annotations become JSDoc on input and output fields", () => {
expect(inputTypeScript(lookupOrder, true)).toBe(
["{", " /** Order identifier */", " id: string", " verbose?: boolean", "}"].join("\n"),
)
expect(outputTypeScript(lookupOrder, true)).toBe(
["{", " /** Current order status */", " status: string", "}"].join("\n"),
)
})
test("constraints TypeScript cannot express surface as JSDoc tags", () => {
const pretty = jsonSchemaToTypeScript(
{
type: "object",
properties: {
legacy: { type: "string", deprecated: true },
homepage: { type: "string", format: "uri" },
tags: { type: "array", items: { type: "string" }, minItems: 2, maxItems: 5, default: ["a", "b"] },
},
},
true,
)
expect(pretty).toContain(" /** @deprecated */\n legacy?: string")
expect(pretty).toContain(" /** @format uri */\n homepage?: string")
expect(pretty).toContain(
[" /**", ' * @default ["a","b"]', " * @minItems 2", " * @maxItems 5", " */", " tags?: Array<string>"].join("\n"),
)
})
test("skips an unserializable default rather than emitting a broken tag", () => {
const pretty = jsonSchemaToTypeScript(
{ type: "object", properties: { size: { type: "number", default: 1n } } },
true,
)
expect(pretty).toBe(["{", " size?: number", "}"].join("\n"))
})
test("neutralizes */ inside descriptions so nothing closes the comment early", () => {
const pretty = jsonSchemaToTypeScript(
{ type: "object", properties: { note: { type: "string", description: "Ends */ early" } } },
true,
)
expect(pretty).toContain(" /** Ends * / early */")
expect(pretty).not.toContain("Ends */")
})
test("multiline descriptions become *-prefixed blocks with blank edges trimmed", () => {
const pretty = jsonSchemaToTypeScript(
{
type: "object",
properties: { query: { type: "string", description: "\nFirst line\n\nSecond line\n" } },
},
true,
)
expect(pretty).toBe(
["{", " /**", " * First line", " *", " * Second line", " */", " query?: string", "}"].join("\n"),
)
})
test("stays total on cyclic $refs and pathological nesting in both modes", () => {
const cyclic = {
$ref: "#/$defs/Node",
$defs: { Node: { type: "object", properties: { child: { $ref: "#/$defs/Node" }, name: { type: "string" } } } },
} as const
expect(jsonSchemaToTypeScript(cyclic)).toBe("{ child?: Node; name?: string }")
expect(jsonSchemaToTypeScript(cyclic, true)).toContain("child?: Node")
let deep: Record<string, unknown> = { type: "string" }
for (let level = 0; level < 12; level += 1) deep = { type: "object", properties: { next: deep } }
for (const pretty of [false, true]) {
const rendered = jsonSchemaToTypeScript(deep, pretty)
expect(rendered).toContain("unknown")
expect(rendered).toContain("next?:")
}
})
})
describe("non-identifier property names render as quoted keys", () => {
// MCP-style schemas routinely carry property names that are not bare TS identifiers
// (`foo-bar`, `@type`, dotted names); the rendered signature must quote them so the
// model sees a valid TypeScript object type. Bare identifiers stay unquoted.
const rawSchema = {
type: "object",
properties: {
"foo-bar": { type: "string" },
"@type": { type: "string" },
"x.y": { type: "number", description: "Dotted name" },
"123": { type: "number" },
plain: { type: "boolean" },
},
required: ["@type"],
} as const
test("compact rendering quotes non-identifier keys and leaves identifiers bare", () => {
expect(jsonSchemaToTypeScript(rawSchema)).toBe(
'{ "123"?: number; "foo-bar"?: string; "@type": string; "x.y"?: number; plain?: boolean }',
)
})
test("pretty rendering quotes non-identifier keys and keeps their JSDoc", () => {
expect(jsonSchemaToTypeScript(rawSchema, true)).toBe(
[
"{",
' "123"?: number',
' "foo-bar"?: string',
' "@type": string',
" /** Dotted name */",
' "x.y"?: number',
" plain?: boolean",
"}",
].join("\n"),
)
})
test("JSON Schema input and output signatures of a tool both quote", () => {
const tool = Tool.make({
description: "Adapter tool with awkward field names",
input: rawSchema,
output: { type: "object", properties: { "content-type": { type: "string" } }, required: ["content-type"] } as const,
run: () => Effect.succeed({ "content-type": "text/plain" }),
})
expect(inputTypeScript(tool)).toContain('"foo-bar"?: string')
expect(outputTypeScript(tool)).toBe('{ "content-type": string }')
expect(outputTypeScript(tool, true)).toBe(["{", ' "content-type": string', "}"].join("\n"))
})
test("Effect Schema structs with non-identifier field names quote too", () => {
const tool = Tool.make({
description: "Schema tool with awkward field names",
input: Schema.Struct({ "foo-bar": Schema.String, plain: Schema.optionalKey(Schema.Number) }),
run: () => Effect.succeed(null),
})
expect(inputTypeScript(tool)).toBe('{ "foo-bar": string; plain?: number }')
expect(inputTypeScript(tool, true)).toBe(["{", ' "foo-bar": string', " plain?: number", "}"].join("\n"))
})
})
describe("union schemas render every alternative", () => {
test("anyOf with a number branch keeps sibling alternatives", () => {
const schema = {
anyOf: [{ type: "string" }, { type: "number" }],
} as const
expect(jsonSchemaToTypeScript(schema)).toBe("string | number")
expect(jsonSchemaToTypeScript(schema, true)).toBe("string | number")
})
test("nullable numeric unions keep null", () => {
const schema = {
oneOf: [{ type: "number" }, { type: "null" }],
} as const
expect(jsonSchemaToTypeScript(schema)).toBe("number | null")
expect(jsonSchemaToTypeScript(schema, true)).toBe("number | null")
})
test("tool input and output signatures preserve numeric unions", () => {
const tool = Tool.make({
description: "Tool with numeric unions",
input: {
type: "object",
properties: {
value: { anyOf: [{ type: "string" }, { type: "number" }] },
},
} as const,
output: { anyOf: [{ type: "number" }, { type: "boolean" }] } as const,
run: () => Effect.succeed(1),
})
expect(inputTypeScript(tool)).toBe("{ value?: string | number }")
expect(outputTypeScript(tool)).toBe("number | boolean")
})
})
describe("pretty signatures in search results", () => {
const runtime = CodeMode.make({ tools: { github: { list_issues: listIssues }, orders: { lookup: lookupOrder } } })
const search = async (query: string) => {
const result = await Effect.runPromise(runtime.execute(
`return await tools.$codemode.search({ query: ${JSON.stringify(query)} })`,
))
expect(result.ok).toBe(true)
if (!result.ok) throw new Error("search failed")
return result.value as { items: Array<{ path: string; signature: string }>; total: number }
}
test("a raw JSON Schema (MCP-style) tool's result signature carries field JSDoc and tags", async () => {
const { items } = await search("list issues repository")
const item = items.find(({ path }) => path === "tools.github.list_issues")!
expect(item.signature).toBe(
[
"tools.github.list_issues(input: {",
" /** Repository owner */",
" owner: string",
" /** Cursor from the previous response's pageInfo */",
" after?: string",
" /**",
" * Results per page",
" * @default 30",
" */",
" perPage?: number",
" /**",
" * Filter by labels",
" * @minItems 1",
" * @maxItems 10",
" */",
" labels?: Array<string>",
' state?: "open" | "closed"',
"}): Promise<unknown>",
].join("\n"),
)
})
test("an annotated Effect Schema tool's result signature carries field JSDoc (exact-path lookup too)", async () => {
for (const query of ["look up order", "tools.orders.lookup"]) {
const { items } = await search(query)
const item = items.find(({ path }) => path === "tools.orders.lookup")!
expect(item.signature).toBe(
[
"tools.orders.lookup(input: {",
" /** Order identifier */",
" id: string",
" verbose?: boolean",
"}): Promise<{",
" /** Current order status */",
" status: string",
"}>",
].join("\n"),
)
}
})
test("the inline catalog line for the same tool stays single-line compact", () => {
const instructions = runtime.instructions()
expect(instructions).toContain(
' - tools.github.list_issues(input: { owner: string; after?: string; perPage?: number; labels?: Array<string>; state?: "open" | "closed" }): Promise<unknown> // List issues in a repository',
)
expect(instructions).toContain(
" - tools.orders.lookup(input: { id: string; verbose?: boolean }): Promise<{ status: string }> // Look up an order",
)
expect(instructions).not.toContain("/**")
})
})