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

src/geometry.test.ts
53 строки2 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 { axisCells, countSolidLines, sharedAxis, shipLineCells } from "./geometry.js";
import { BOARD_SIZE, Cell } from "./types.js";

describe("axisCells", () => {
  it("горизонталь через (3,3) покрывает всю строку кроме самой клетки", () => {
    const cells = axisCells({ row: 3, col: 3 }, "horizontal");
    expect(cells).toHaveLength(BOARD_SIZE - 1);
    expect(cells.every((c) => c.row === 3)).toBe(true);
    expect(cells.some((c) => c.col === 3)).toBe(false);
  });

  it("диагонали из угла (0,0)", () => {
    expect(axisCells({ row: 0, col: 0 }, "diagonalDown")).toHaveLength(9);
    expect(axisCells({ row: 0, col: 0 }, "diagonalUp")).toHaveLength(0);
  });

  it("линии корабля в центре покрывают 4 оси без дублей", () => {
    const cells = shipLineCells({ row: 4, col: 4 });
    const keys = new Set(cells.map((c) => `${c.row},${c.col}`));
    expect(keys.size).toBe(cells.length);
    // строка 9 + столбец 9 + диагонали (8 + 9)
    expect(cells).toHaveLength(9 + 9 + 8 + 9);
  });
});

describe("sharedAxis", () => {
  it("определяет каждую из осей", () => {
    const origin: Cell = { row: 4, col: 4 };
    expect(sharedAxis(origin, { row: 4, col: 9 })).toBe("horizontal");
    expect(sharedAxis(origin, { row: 0, col: 4 })).toBe("vertical");
    expect(sharedAxis(origin, { row: 2, col: 6 })).toBe("diagonalUp");
    expect(sharedAxis(origin, { row: 6, col: 6 })).toBe("diagonalDown");
    expect(sharedAxis(origin, { row: 2, col: 5 })).toBeNull();
    expect(sharedAxis(origin, origin)).toBeNull();
  });
});

describe("countSolidLines", () => {
  it("клетка на пересечении двух линий разных кораблей", () => {
    const ships: Cell[] = [
      { row: 0, col: 0 },
      { row: 1, col: 2 },
    ];
    // (0,2): строка корабля (0,0) + столбец корабля (1,2)
    expect(countSolidLines(ships, { row: 0, col: 2 })).toBe(2);
  });

  it("клетка вне всех линий", () => {
    const ships: Cell[] = [{ row: 0, col: 0 }];
    expect(countSolidLines(ships, { row: 2, col: 5 })).toBe(0);
  });
});