import {
  proposal_merge,
} from './agent.js';


// --===== proposal conflicts =====--

test("proposals changing different tiles don't conflict", () => {
  const a = {
    world_changes: [{ x: 4, y: 3, from: 'empty', to: 'mutable' }],
  };
  const b = {
    world_changes: [{ x: 4, y: 4, from: 'empty', to: 'flag' }],
  };

  expect(proposal_merge([a], b)).toEqual([a, b]);
});


test("proposals changing the same tile to different states conflict", () => {
  const a = {
    world_changes: [{ x: 4, y: 3, from: 'empty', to: 'mutable' }],
  };
  const b = {
    world_changes: [{ x: 4, y: 3, from: 'empty', to: 'flag' }],
  };

  expect(proposal_merge([a], b)).toEqual([]);
});


test("proposals changing the same tile to the same state merge to a single proposal", () => {
  const a = {
    world_changes: [{ x: 4, y: 3, from: 'empty', to: 'mutable' }],
  };
  const b = {
    world_changes: [{ x: 4, y: 3, from: 'empty', to: 'mutable' }],
  };

  expect(proposal_merge([a], b)).toEqual([a]);
});


test("proposals moving two agents to the same tile conflict", () => {
  const a = {
    agent_changes: [{ agent_id: 'aaa', x: 4, y: 3 }],
  };
  const b = {
    agent_changes: [{ agent_id: 'bbb', x: 4, y: 3 }],
  };

  expect(proposal_merge([a], b)).toEqual([]);
});


test("proposals moving two agents to different tiles do not conflict", () => {
  const a = {
    agent_changes: [{ agent_id: 'aaa', x: 4, y: 3 }],
  };
  const b = {
    agent_changes: [{ agent_id: 'bbb', x: 3, y: 3 }],
  };

  expect(proposal_merge([a], b)).toEqual([a, b]);
});


test("proposals moving the same agent to different tiles conflict", () => {
  const a = {
    agent_changes: [{ agent_id: 'aaa', x: 4, y: 3 }],
  };
  const b = {
    agent_changes: [{ agent_id: 'aaa', x: 3, y: 3 }],
  };

  expect(proposal_merge([a], b)).toEqual([]);
});


test("proposals moving the same agent to the same tile merge", () => {
  const a = {
    agent_changes: [{ agent_id: 'aaa', x: 4, y: 3 }],
  };
  const b = {
    agent_changes: [{ agent_id: 'aaa', x: 4, y: 3 }],
  };

  expect(proposal_merge([a], b)).toEqual([a]);
});