import { readTestProgram, executeProgram } from "../../test-utils";
// import { BFRS, serializeTapeMap } from "../constants";
import Engine from "../runtime";

/**
 * All test programs are picked up from https://esolangs.org/wiki/Brainfuck.
 * - Cell cleanup code at end of cell size program is not included.
 */

/**
 * Check if actual cell array matches expected cell array.
 * Expected cell array must exclude trailing zeros.
 * @param cellsMap Map of cell index to value, as provided in execution result.
 * @param expected Array of expected cell values, without trailing zeros.
 */
// const expectCellsToBe = (cellsMap: BFRS["tape"], expected: number[]) => {
//   const cells = serializeTapeMap(cellsMap);
//   expect(cells.length).toBeGreaterThanOrEqual(expected.length);
//   cells.forEach((value, idx) => {
//     if (idx < expected.length) expect(value).toBe(expected[idx]);
//     else expect(value).toBe(0);
//   });
// };

describe("Test programs", () => {
  // Standard hello-world program
  test("hello world", async () => {
    const code = readTestProgram(__dirname, "helloworld");
    const result = await executeProgram(new Engine(), code);
    expect(result.output).toBe("7210110810811132119111114108100");
    expect(result.rendererState.value).toBe(100);
  });

  // Test program 1, output 0
  test("output zero (1)", async () => {
    const code = readTestProgram(__dirname, "zero1");
    const result = await executeProgram(new Engine(), code);
    expect(result.output).toBe("0");
    expect(result.rendererState.value).toBe(0);
  });

  // Test program 2, output 0
  test("output zero (2)", async () => {
    const code = readTestProgram(__dirname, "zero2");
    const result = await executeProgram(new Engine(), code);
    expect(result.output).toBe("0");
    expect(result.rendererState.value).toBe(0);
  });

  // Test program 3, output 288
  test("output 288", async () => {
    const code = readTestProgram(__dirname, "288");
    const result = await executeProgram(new Engine(), code);
    expect(result.output).toBe("288");
    expect(result.rendererState.value).toBe(288);
  });
});