src/placement.test.ts - main - docNemo/tactic-hack-core

src/placement.test.ts
66 строк2 KB
neo
Implement rules engine: geometry, placement, attack reducer, replay, projection, deduction, protocol types
19 июл 2026, 00:03
19 июл 2026, 00:03d1403fb
import { describe, expect, it } from "vitest";
import { canPlaceShip, validatePlacement, validateShipPlacement } from "./placement.js";
import { Cell } from "./types.js";

/** Валидная расстановка: разные строки, столбцы и диагонали. */
export const PLACEMENT_A: Cell[] = [
  { row: 0, col: 0 },
  { row: 1, col: 2 },
  { row: 2, col: 4 },
  { row: 3, col: 6 },
  { row: 4, col: 8 },
];

describe("validateShipPlacement", () => {
  it("разрешает свободную клетку", () => {
    expect(canPlaceShip([{ row: 0, col: 0 }], { row: 2, col: 5 })).toBe(true);
  });

  it("отклоняет клетку на линии другого корабля", () => {
    const result = validateShipPlacement([{ row: 0, col: 0 }], { row: 0, col: 7 });
    expect(result).toEqual({ ok: false, code: "cellOnLine" });
  });

  it("отклоняет занятую клетку", () => {
    const result = validateShipPlacement([{ row: 3, col: 3 }], { row: 3, col: 3 });
    expect(result).toEqual({ ok: false, code: "cellOccupied" });
  });

  it("отклоняет клетку вне поля", () => {
    expect(validateShipPlacement([], { row: -1, col: 0 })).toEqual({
      ok: false,
      code: "outOfBounds",
    });
    expect(validateShipPlacement([], { row: 0, col: 10 })).toEqual({
      ok: false,
      code: "outOfBounds",
    });
  });
});

describe("validatePlacement", () => {
  it("принимает расстановку неатакующих ферзей", () => {
    expect(validatePlacement(PLACEMENT_A)).toEqual({ ok: true });
  });

  it("отклоняет расстановку не из 5 кораблей", () => {
    expect(validatePlacement(PLACEMENT_A.slice(0, 4))).toEqual({
      ok: false,
      code: "wrongShipCount",
    });
    expect(
      validatePlacement([...PLACEMENT_A, { row: 9, col: 1 }]),
    ).toEqual({ ok: false, code: "wrongShipCount" });
  });

  it("отклоняет два корабля на одной диагонали", () => {
    const ships: Cell[] = [
      { row: 0, col: 0 },
      { row: 1, col: 1 },
      { row: 2, col: 5 },
      { row: 5, col: 2 },
      { row: 7, col: 9 },
    ];
    expect(validatePlacement(ships)).toEqual({ ok: false, code: "cellOnLine" });
  });
});