OpenFrontIO/tests/AllianceExtensionExecution.test.ts

import { AllianceExtensionExecution } from "engine/execution/alliance/AllianceExtensionExecution";
import { AllianceRequestExecution } from "engine/execution/alliance/AllianceRequestExecution";
import { Game, MessageType, Player, PlayerType } from "engine/game/Game";
import { playerInfo, setup } from "./util/Setup";

let game: Game;
let player1: Player;
let player2: Player;
let player3: Player;

describe("AllianceExtensionExecution", () => {
  beforeEach(async () => {
    game = await setup(
      "ocean_and_land",
      { infiniteGold: true, instantBuild: true, infiniteTroops: true },
      [
        playerInfo("player1", PlayerType.Human),
        playerInfo("player2", PlayerType.Human),
        playerInfo("player3", PlayerType.Nation),
      ],
    );

    player1 = game.player("player1");
    player2 = game.player("player2");
    player3 = game.player("player3");
  });

  test("Successfully extends existing alliance between Humans", () => {
    vi.spyOn(player1, "canSendAllianceRequest").mockReturnValue(true);
    vi.spyOn(player2, "canSendAllianceRequest").mockReturnValue(true);
    vi.spyOn(player2, "isAlive").mockReturnValue(true);
    vi.spyOn(player1, "isAlive").mockReturnValue(true);

    game.addExecution(new AllianceRequestExecution(player1, player2.id()));
    game.executeNextTick();

    game.addExecution(new AllianceRequestExecution(player2, player1.id()));
    game.executeNextTick();

    expect(player1.allianceWith(player2)).toBeTruthy();
    expect(player2.allianceWith(player1)).toBeTruthy();

    const allianceBefore = player1.allianceWith(player2)!;
    const allianceSpy = vi.spyOn(allianceBefore, "extend");

    const expirationBefore = allianceBefore.expiresAt();

    game.addExecution(new AllianceExtensionExecution(player1, player2.id()));
    game.executeNextTick();
    expect(allianceSpy).toHaveBeenCalledTimes(0); // both players must agree to extend
    game.addExecution(new AllianceExtensionExecution(player2, player1.id()));
    game.executeNextTick();

    const allianceAfter = player1.allianceWith(player2)!;

    expect(allianceAfter.id()).toBe(allianceBefore.id());

    const expirationAfter = allianceAfter.expiresAt();

    expect(expirationAfter).toBeGreaterThan(expirationBefore);
    expect(allianceSpy).toHaveBeenCalledTimes(1);
  });

  test("Fails gracefully if no alliance exists", () => {
    game.addExecution(new AllianceExtensionExecution(player1, player2.id()));
    game.executeNextTick();

    expect(player1.allianceWith(player2)).toBeFalsy();
    expect(player2.allianceWith(player1)).toBeFalsy();
  });

  test("Successfully extends existing alliance between Human and non-Human", () => {
    vi.spyOn(player1, "canSendAllianceRequest").mockReturnValue(true);
    vi.spyOn(player3, "canSendAllianceRequest").mockReturnValue(true);
    vi.spyOn(player3, "isAlive").mockReturnValue(true);
    vi.spyOn(player1, "isAlive").mockReturnValue(true);

    game.addExecution(new AllianceRequestExecution(player1, player3.id()));
    game.executeNextTick();

    game.addExecution(new AllianceRequestExecution(player3, player1.id()));
    game.executeNextTick();

    expect(player1.allianceWith(player3)).toBeTruthy();
    expect(player3.allianceWith(player1)).toBeTruthy();

    const allianceBefore = player1.allianceWith(player3)!;
    const allianceSpy = vi.spyOn(allianceBefore, "extend");
    const expirationBefore = allianceBefore.expiresAt();

    game.addExecution(new AllianceExtensionExecution(player1, player3.id()));
    game.executeNextTick();
    expect(allianceSpy).toHaveBeenCalledTimes(0); // both players must agree to extend
    game.addExecution(new AllianceExtensionExecution(player3, player1.id()));
    game.executeNextTick();

    const allianceAfter = player1.allianceWith(player3)!;

    expect(allianceAfter.id()).toBe(allianceBefore.id());

    const expirationAfter = allianceAfter.expiresAt();

    expect(expirationAfter).toBeGreaterThan(expirationBefore);
    expect(allianceSpy).toHaveBeenCalledTimes(1);
  });

  test("Sends message to other player when one player requests renewal", () => {
    vi.spyOn(player1, "canSendAllianceRequest").mockReturnValue(true);
    vi.spyOn(player2, "canSendAllianceRequest").mockReturnValue(true);
    vi.spyOn(player2, "isAlive").mockReturnValue(true);
    vi.spyOn(player1, "isAlive").mockReturnValue(true);

    // Create alliance between player1 and player2
    game.addExecution(new AllianceRequestExecution(player1, player2.id()));
    game.executeNextTick();

    game.addExecution(new AllianceRequestExecution(player2, player1.id()));
    game.executeNextTick();

    expect(player1.allianceWith(player2)).toBeTruthy();
    expect(player2.allianceWith(player1)).toBeTruthy();

    // Spy on displayMessage to verify it's called
    const displayMessageSpy = vi.spyOn(game, "displayMessage");

    // Player1 requests renewal
    game.addExecution(new AllianceExtensionExecution(player1, player2.id()));
    game.executeNextTick();

    // Verify message was sent to player2
    expect(displayMessageSpy).toHaveBeenCalledWith(
      "events_display.wants_to_renew_alliance",
      MessageType.RENEW_ALLIANCE,
      player2.id(),
      undefined,
      { name: player1.displayName() },
    );
    expect(displayMessageSpy).toHaveBeenCalledTimes(1);

    // Request again - should not send duplicate message
    game.addExecution(new AllianceExtensionExecution(player1, player2.id()));
    game.executeNextTick();

    // Should still be called only once (no duplicate)
    expect(displayMessageSpy).toHaveBeenCalledTimes(1);

    displayMessageSpy.mockRestore();
  });
});