import { describe, expect, it } from "vitest";
import { buildParams, jsonToolResult } from "../../src/tools/_shared.js";
describe("tools/_shared", () => {
describe("buildParams", () => {
it("filters out null/undefined and keeps only primitive values", () => {
const params = buildParams({
a: "x",
b: 1,
c: true,
d: null,
e: undefined,
f: { nested: "no" },
g: [1, 2, 3],
h: () => "no",
});
expect(params).toEqual({ a: "x", b: 1, c: true });
});
it("keeps empty string/0/false (valid primitives)", () => {
const params = buildParams({
empty: "",
zero: 0,
nope: false,
});
expect(params).toEqual({ empty: "", zero: 0, nope: false });
});
});
describe("jsonToolResult", () => {
it("wraps the object as MCP text content with pretty JSON", () => {
const result = jsonToolResult({ ok: true, nested: { a: 1 } });
expect(result.content).toHaveLength(1);
expect(result.content[0].type).toBe("text");
const text = result.content[0].text;
expect(JSON.parse(text)).toEqual({ ok: true, nested: { a: 1 } });
// Pretty-print includes newlines/indentation for nested objects
expect(text).toContain("\n");
expect(text).toContain(' "nested"');
});
});
});
