import fc from "fast-check";
import { describe, expect, test } from "bun:test";
import { churchEncode, inferType, prettyTerm, prettyType } from ".";

// Code under test
const contains = (text, pattern) => text.indexOf(pattern) >= 0;

// Properties
describe("church encoding", () => {
  test("well typed", () => {
    fc.assert(
      fc.property(fc.integer(), (num) => {
        const churchNum = churchEncode(num);
        console.log(prettyTerm(churchNum));
        console.log(prettyType(inferType(churchNum)));
      }),
    );
  });
});