import { describe, it } from 'bun:test';

import { strict as assert } from 'bun:assert';

import * as Diff3 from '../src/diff3.mjs';

describe('diffComm', () => {

it('returns a comm-style diff of two arrays', () => {

const a = ['AA', 'a', 'b', 'c', 'ZZ', 'new', '00', 'a', 'a', 'M', '99'];

const b = ['AA', 'a', 'd', 'c', 'ZZ', '11', 'M', 'z', 'z', '99'];

const result = Diff3.diffComm(a, b);

assert.deepEqual(result[0].common, ['AA', 'a']);

assert.deepEqual(result[0].buffer1, undefined);

assert.deepEqual(result[0].buffer2, undefined);

assert.deepEqual(result[1].common, undefined);

assert.deepEqual(result[1].buffer1, ['b']);

assert.deepEqual(result[1].buffer2, ['d']);

assert.deepEqual(result[2].common, ['c', 'ZZ']);

assert.deepEqual(result[2].buffer1, undefined);

assert.deepEqual(result[2].buffer2, undefined);

assert.deepEqual(result[3].common, undefined);

assert.deepEqual(result[3].buffer1, ['new', '00', 'a', 'a']);

assert.deepEqual(result[3].buffer2, ['11']);

assert.deepEqual(result[4].common, ['M']);

assert.deepEqual(result[4].buffer1, undefined);

assert.deepEqual(result[4].buffer2, undefined);

assert.deepEqual(result[5].common, undefined);

assert.deepEqual(result[5].buffer1, []);

assert.deepEqual(result[5].buffer2, ['z', 'z']);

assert.deepEqual(result[6].common, ['99']);

assert.deepEqual(result[6].buffer1, undefined);

assert.deepEqual(result[6].buffer2, undefined);

});

});