import { describe, expect, it } from "@effect/vitest"; import { recoverExecutionBody } from "./code-recovery"; const wrapCallableBody = (source: string): string =>  [    "const __fn = (",    source,    ");",    'if (typeof __fn !== "function") throw new Error("Code must evaluate to a function");',    "return await __fn();",  ].join("\n"); describe("recoverExecutionBody", () => {  it("wraps an async arrow function body for invocation", () => {    expect(recoverExecutionBody("async () => { return 1; }")).toBe(      wrapCallableBody("async () => { return 1; }"),    );  });   it("wraps an async arrow with params for invocation", () => {    expect(recoverExecutionBody("async (x) => x + 1")).toBe(wrapCallableBody("async (x) => x + 1"));  });   it("strips export default from an async arrow", () => {    expect(recoverExecutionBody("export default async () => 42")).toBe(      wrapCallableBody("async () => 42"),    );  });   it("leaves a bare expression as a statement body", () => {    expect(recoverExecutionBody("1 + 2")).toBe("1 + 2");  });   it("wraps a named function declaration and calls it", () => {    expect(recoverExecutionBody("function hello() { return 42; }")).toBe(      "function hello() { return 42; }\nreturn await hello();",    );  });   it("wraps an async function declaration", () => {    expect(recoverExecutionBody("async function run() { return 'ok'; }")).toBe(      "async function run() { return 'ok'; }\nreturn await run();",    );  });   it("wraps an exported default named async function declaration", () => {    expect(recoverExecutionBody("export default async function run() { return 'ok'; }")).toBe(      "async function run() { return 'ok'; }\nreturn await run();",    );  });   it("wraps an exported default anonymous async function declaration", () => {    expect(recoverExecutionBody("export default async function () { return 'ok'; }")).toBe(      "return await (async function () { return 'ok'; })();",    );  });   it("strips markdown code fences", () => {    expect(recoverExecutionBody("```js\nasync () => 42\n```")).toBe(      wrapCallableBody("async () => 42"),    );  });   it("strips typescript fences", () => {    expect(recoverExecutionBody("```typescript\nasync () => 42\n```")).toBe(      wrapCallableBody("async () => 42"),    );  });   it("returns an empty body for an empty string", () => {    expect(recoverExecutionBody("")).toBe("");  });   it("returns an empty body for whitespace-only", () => {    expect(recoverExecutionBody("   \n  ")).toBe("");  });   it("handles multi-statement code", () => {    const code = "const a = 1;\nconst b = 2;\na + b";    expect(recoverExecutionBody(code)).toBe(code);  });   it("accepts a parenthesized async arrow from a fenced block", () => {    expect(recoverExecutionBody("```ts\n(async () => 42)\n```")).toBe(      wrapCallableBody("(async () => 42)"),    );  });   it("passes through an async arrow with noisy spacing", () => {    expect(recoverExecutionBody("  \n\tasync   ( input )   =>   input?.value ?? 42   \n")).toBe(      wrapCallableBody("async   ( input )   =>   input?.value ?? 42"),    );  });   it("strips export default from a parenthesized async arrow", () => {    expect(recoverExecutionBody("export default (async () => 42)")).toBe(      wrapCallableBody("async () => 42"),    );  });   it("wraps a sync anonymous function declaration from a fence", () => {    expect(recoverExecutionBody("```javascript\nfunction () { return 42; }\n```")).toBe(      "return await (function () { return 42; })();",    );  });   it("keeps a statement body that already contains return", () => {    const code = 'const query = "github issues";\nreturn await tools.search({ query, limit: 5 });';    expect(recoverExecutionBody(code)).toBe(code);  });   it("keeps a multiline async arrow with comments by wrapping the source", () => {    const code = [      "async () => {",      '  console.log("before");',      "  // Model added some narration inline",      "  return 42;",      "}",    ].join("\n");     expect(recoverExecutionBody(code)).toBe(wrapCallableBody(code));  });   it("extracts code from prose wrapped fences", () => {    const code = ["Sure, here's the code:", "", "```ts", "async () => 42", "```"].join("\n");     expect(recoverExecutionBody(code)).toBe(wrapCallableBody("async () => 42"));  });   it("ignores leading comments before an async arrow", () => {    const code = [      "// calling tools.search with the narrowed namespace",      'async () => await tools.search({ query: "list contacts", namespace: "crm", limit: 5 })',    ].join("\n");     expect(recoverExecutionBody(code)).toBe(wrapCallableBody(code));  });   it("handles block comments before export default", () => {    const code = ["/* generated by the model */", "export default async () => 42"].join("\n");     expect(recoverExecutionBody(code)).toBe(wrapCallableBody("async () => 42"));  });   it("handles uppercase fence labels", () => {    expect(recoverExecutionBody("```TypeScript\nasync () => 42\n```")).toBe(      wrapCallableBody("async () => 42"),    );  });   it("treats a named function with leading comments as a declaration", () => {    const code = [      "// top-level helper the model wanted to keep",      "async function run() {",      '  return "ok";',      "}",    ].join("\n");     expect(recoverExecutionBody(code)).toBe(`${code}\nreturn await run();`);  });   it("extracts the body from prose before and after a fence", () => {    const code = [      "Use this exact snippet.",      "",      "```javascript",      'return await tools.search({ query: "github issues", limit: 5 });',      "```",      "",      "That should do it.",    ].join("\n");     expect(recoverExecutionBody(code)).toBe(      'return await tools.search({ query: "github issues", limit: 5 });',    );  });   it("keeps a complex multi-step function body intact", () => {    const code = [      'const query = "recent pull requests";',      "const limit = 5;",      "",      "function pickTop(matches) {",      "  return matches.slice(0, 3).map((match) => match.path);",      "}",      "",      "try {",      "  const matches = await tools.search({ query, limit });",      "  const top = pickTop(matches);",      '  console.log("top results", top);',      "  return { count: matches.length, top };",      "} catch (error) {",      "  return {",      "    error: error instanceof Error ? error.message : String(error),",      "    query,",      "  };",      "}",    ].join("\n");     expect(recoverExecutionBody(code)).toBe(code);  });   it("extracts a complex fenced function body from surrounding prose", () => {    const body = [      "const owner = 'openai';",      "const repo = 'executor';",      "",      "const issues = await tools.github.listRepositoryIssues({ owner, repo });",      "const titles = issues",      "  .slice(0, 5)",      "  .map((issue) => issue.title)",      "  .filter(Boolean);",      "",      "return {",      "  owner,",      "  repo,",      "  titles,",      "};",    ].join("\n");     const code = [      "Run this:",      "",      "```ts",      body,      "```",      "",      "It should return the top issue titles.",    ].join("\n");     expect(recoverExecutionBody(code)).toBe(body);  });   it("wraps a complex async arrow body for invocation", () => {    const code = [      "async () => {",      '  const query = "list contacts";',      "  const results = await tools.search({",      "    query,",      '    namespace: "crm",',      "    limit: 5,",      "  });",      "",      "  return results.map((result) => ({",      "    path: result.path,",      "    score: result.score ?? null,",      "  }));",      "}",    ].join("\n");     expect(recoverExecutionBody(code)).toBe(wrapCallableBody(code));  });});