import assert from 'assert';
import lodashStable from 'lodash';
import { falsey, stubFalse, args, slice, symbol, isStrict, lodashBizarro } from './utils.js';
import isBuffer from '../isBuffer.js';

describe('isBuffer', function() {
  it('should return `true` for buffers', function() {
    if (Buffer) {
      assert.strictEqual(isBuffer(new Buffer(2)), true);
    }
  });

  it('should return `false` for non-buffers', function() {
    var expected = lodashStable.map(falsey, stubFalse);

    var actual = lodashStable.map(falsey, function(value, index) {
      return index ? isBuffer(value) : isBuffer();
    });

    assert.deepStrictEqual(actual, expected);

    assert.strictEqual(isBuffer(args), false);
    assert.strictEqual(isBuffer([1]), false);
    assert.strictEqual(isBuffer(true), false);
    assert.strictEqual(isBuffer(new Date), false);
    assert.strictEqual(isBuffer(new Error), false);
    assert.strictEqual(isBuffer(_), false);
    assert.strictEqual(isBuffer(slice), false);
    assert.strictEqual(isBuffer({ 'a': 1 }), false);
    assert.strictEqual(isBuffer(1), false);
    assert.strictEqual(isBuffer(/x/), false);
    assert.strictEqual(isBuffer('a'), false);
    assert.strictEqual(isBuffer(symbol), false);
  });

  it('should return `false` if `Buffer` is not defined', function() {
    if (!isStrict && Buffer && lodashBizarro) {
      assert.strictEqual(lodashBizarro.isBuffer(new Buffer(2)), false);
    }
  });
});