rea/src/javascript/analysis/JavaScriptAnalysisWorkerSchemas.test.ts

import { expect, it } from "vitest";

import { analyzeJavaScriptStaticSource } from "../../domain/javascript/javascriptStaticAnalysis.js";
import {
  javaScriptWorkerModuleHeaderSchema,
  javaScriptWorkerModuleRecordSchema,
  javaScriptWorkerStaticAnalysisSchema,
} from "./JavaScriptAnalysisWorkerSchemas.js";
import { analyzeJavaScriptSemantics } from "../../domain/javascript/javascriptSemanticAnalysis.js";
import { getterExpansionSource } from "../../../tests/fixtures/javascriptGetterExpansion.js";

it("transfers getter expansion limits and unknown bindings across the worker boundary", () => {
  const ir = analyzeJavaScriptSemantics(getterExpansionSource());
  const header = { coverage: ir.coverage, limitations: ir.limitations };
  expect(
    javaScriptWorkerModuleHeaderSchema.parse(
      JSON.parse(JSON.stringify(header)) as unknown,
    ),
  ).toEqual(header);
  for (const value of ir.bindings) {
    const record = { kind: "binding", value };
    expect(
      javaScriptWorkerModuleRecordSchema.parse(
        JSON.parse(JSON.stringify(record)) as unknown,
      ),
    ).toEqual(record);
  }
  expect(ir.coverage.resourceLimits).toEqual(["getter-expansion"]);
});

it("retains candidate endpoint interpretation across the worker boundary", () => {
  const facts = analyzeJavaScriptStaticSource(`
    client.get("settingKey");
    fetch("/api");
  `);
  expect(facts.endpoints).toEqual([
    expect.objectContaining({
      value: "settingKey",
      interpretation: "candidate",
    }),
    expect.objectContaining({ value: "/api" }),
  ]);
  expect(facts.endpoints[1]).not.toHaveProperty("interpretation");
  const serialized = JSON.parse(JSON.stringify(facts)) as unknown;
  expect(javaScriptWorkerStaticAnalysisSchema.parse(serialized)).toEqual(facts);
  expect(
    javaScriptWorkerStaticAnalysisSchema.safeParse({
      ...facts,
      endpoints: facts.endpoints.map((endpoint) => ({
        ...endpoint,
        interpretation: "confirmed",
      })),
    }).success,
  ).toBe(false);
});

it.each(["babel-ast-v1", "babel-ast-v2"])(
  "versions fingerprints through the worker schema and rejects %s",
  (oldAlgorithm) => {
    const facts =
      analyzeJavaScriptStaticSource(`globalThis.webpackChunkApp.push([[1], {
    17(module, exports) { const key = selectKey(); exports.read = value[key]; }
  }]);`);
    expect(facts.bundler_registrations[0]?.modules[0]).toMatchObject({
      structural_fingerprint_algorithm: "babel-ast-v3",
      structural_fingerprint_sha256: expect.stringMatching(/^[a-f0-9]{64}$/u),
    });
    expect(
      javaScriptWorkerStaticAnalysisSchema.safeParse(
        JSON.parse(JSON.stringify(facts)) as unknown,
      ).success,
    ).toBe(true);
    const old = {
      ...facts,
      bundler_registrations: facts.bundler_registrations.map(
        (registration) => ({
          ...registration,
          modules: registration.modules.map((module) => ({
            ...module,
            structural_fingerprint_algorithm: oldAlgorithm,
          })),
        }),
      ),
    };
    expect(javaScriptWorkerStaticAnalysisSchema.safeParse(old).success).toBe(
      false,
    );
  },
);

it("accepts candidate endpoint interpretations from static analysis", () => {
  const facts = analyzeJavaScriptStaticSource(`http.request("POST", target);`);
  expect(facts.endpoints).toContainEqual(
    expect.objectContaining({
      kind: "network",
      value: "POST",
      interpretation: "candidate",
    }),
  );
  expect(
    javaScriptWorkerStaticAnalysisSchema.safeParse(
      JSON.parse(JSON.stringify(facts)) as unknown,
    ).success,
  ).toBe(true);
});