software-mansion__argent/packages/tool-server/test/network/network-interceptor.test.ts

import { describe, it, expect } from "vitest";
import {
  makeNetworkLogReadScript,
  makeNetworkDetailReadScript,
} from "../../src/utils/debugger/scripts/network-interceptor";

describe("makeNetworkLogReadScript", () => {
  it("returns a string containing the start and limit values", () => {
    const script = makeNetworkLogReadScript(10, 50, 8081);
    expect(script).toContain("var start = 10");
    expect(script).toContain("var limit = 50");
  });

  it("embeds the metro port for filtering", () => {
    const script = makeNetworkLogReadScript(0, 50, 8081);
    expect(script).toContain("localhost:8081");
    expect(script).toContain("127.0.0.1:8081");
  });

  it("uses different metro port values correctly", () => {
    const script3000 = makeNetworkLogReadScript(0, 50, 3000);
    expect(script3000).toContain("localhost:3000");
    expect(script3000).toContain("127.0.0.1:3000");
    expect(script3000).not.toContain("localhost:8081");
  });

  it("reads from __argent_network_log", () => {
    const script = makeNetworkLogReadScript(0, 50, 8081);
    expect(script).toContain("globalThis.__argent_network_log");
  });

  it("returns interceptorInstalled: false when no log exists", () => {
    const script = makeNetworkLogReadScript(0, 50, 8081);
    expect(script).toContain("interceptorInstalled: false");
  });

  it("strips responseBody from list view entries", () => {
    const script = makeNetworkLogReadScript(0, 50, 8081);
    // The script builds entries without responseBody to avoid large payloads
    expect(script).not.toContain("responseBody: s.responseBody");
  });

  it("is a valid IIFE", () => {
    const script = makeNetworkLogReadScript(0, 50, 8081);
    expect(script.trim()).toMatch(/^\(function\(\)/);
    expect(script.trim()).toMatch(/\)\(\)$/);
  });
});

describe("makeNetworkDetailReadScript", () => {
  it("includes the requestId in the script", () => {
    const script = makeNetworkDetailReadScript("rn-net-42");
    expect(script).toContain("rn-net-42");
  });

  it("embeds the requestId as a JSON string literal (safe against quotes/backslashes/injection)", () => {
    // The requestId is interpolated via JSON.stringify, so for any input the
    // byId lookup is exactly `byId[<json-literal>]` — no break-out is possible.
    for (const rid of ["rn-net-1", "rn-net-'q", 'rn-net-"x', "rn-net-\\b", `x"]; evil(); //`]) {
      const script = makeNetworkDetailReadScript(rid);
      expect(script).toContain(`byId[${JSON.stringify(rid)}]`);
    }
  });

  it("encodes a control character instead of injecting it raw (the hand-escaper crashed the parse)", () => {
    const script = makeNetworkDetailReadScript("rn-net-\n5");
    expect(script).toContain('byId["rn-net-\\n5"]');
    // never a raw newline inside the string literal (which would be a SyntaxError)
    expect(script).not.toMatch(/byId\["rn-net-\n/);
  });

  it("escapes standalone backslashes in requestId", () => {
    const script = makeNetworkDetailReadScript("rn-net-\\test");
    expect(script).toContain("rn-net-\\\\test");
  });

  it("reads from __argent_network_by_id", () => {
    const script = makeNetworkDetailReadScript("rn-net-1");
    expect(script).toContain("globalThis.__argent_network_by_id");
  });

  it("includes responseBody in the detail output", () => {
    const script = makeNetworkDetailReadScript("rn-net-1");
    expect(script).toContain("responseBody: entry.responseBody");
  });

  it("returns an error if interceptor is not installed", () => {
    const script = makeNetworkDetailReadScript("rn-net-1");
    expect(script).toContain("Network interceptor not installed");
  });

  it("returns an error if request is not found", () => {
    const script = makeNetworkDetailReadScript("rn-net-1");
    expect(script).toContain("Request not found");
  });

  it("is a valid IIFE", () => {
    const script = makeNetworkDetailReadScript("rn-net-1");
    expect(script.trim()).toMatch(/^\(function\(\)/);
    expect(script.trim()).toMatch(/\)\(\)$/);
  });
});