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import type { ToolContract } from "@dispatch/kernel";
import { describe, expect, it } from "vitest";
import { filterRemoteIncompatibleTools, type ToolAssembly } from "./tools-filter.js";
function fakeTool(name: string): ToolContract {
return {
name,
description: `Fake tool: ${name}`,
parameters: { type: "object" },
execute: async () => ({ content: "ok" }),
};
}
const baseAssembly: ToolAssembly = {
tools: [fakeTool("lsp"), fakeTool("mcp__x"), fakeTool("run_shell")],
conversationId: "conv-1",
};
describe("filterRemoteIncompatibleTools", () => {
it("REMOTE (computerId set): drops 'lsp' and any '__' namespaced tool, keeps 'run_shell'", () => {
const remote: ToolAssembly = { ...baseAssembly, computerId: "my-server" };
const result = filterRemoteIncompatibleTools(remote);
const names = result.tools.map((t) => t.name);
expect(names).not.toContain("lsp");
expect(names).not.toContain("mcp__x");
expect(names).toContain("run_shell");
expect(result.tools).toHaveLength(1);
});
it("REMOTE: preserves computerId + cwd + conversationId in the returned assembly", () => {
const remote: ToolAssembly = {
tools: [fakeTool("lsp"), fakeTool("run_shell")],
conversationId: "conv-2",
cwd: "/work",
computerId: "ssh-host",
};
const result = filterRemoteIncompatibleTools(remote);
expect(result.computerId).toBe("ssh-host");
expect(result.cwd).toBe("/work");
expect(result.conversationId).toBe("conv-2");
});
it("LOCAL (computerId undefined): passthrough — nothing is dropped", () => {
const local: ToolAssembly = { ...baseAssembly };
const result = filterRemoteIncompatibleTools(local);
expect(result.tools).toHaveLength(3);
const names = result.tools.map((t) => t.name);
expect(names).toContain("lsp");
expect(names).toContain("mcp__x");
expect(names).toContain("run_shell");
});
it("LOCAL: returns the exact same assembly object (byte-identical)", () => {
const local: ToolAssembly = { ...baseAssembly };
const result = filterRemoteIncompatibleTools(local);
expect(result).toBe(local);
});
it("REMOTE: drops multiple MCP-namespaced tools (serverId__toolName pattern)", () => {
const remote: ToolAssembly = {
tools: [
fakeTool("lsp"),
fakeTool("filesystem__read"),
fakeTool("github__create_issue"),
fakeTool("run_shell"),
fakeTool("write_file"),
],
conversationId: "conv-3",
computerId: "host",
};
const result = filterRemoteIncompatibleTools(remote);
const names = result.tools.map((t) => t.name);
expect(names).toEqual(["run_shell", "write_file"]);
});
});
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