mocha.setup('bdd');
var expect = chai.expect;
function has(array, value) {
// sử dụng vòng lặp for...of viết hàm has để kiểm tra xem array có tồn tại 1 giá trị xác định hay không
// Tham số:
// - array: mảng cần kiểm tra
// - value: giá trị cần kiểm tra xem có tồn tại trong array không
// Return:
// - true nếu có tồn tại
// - false nếu không tồn tại
for (var element of array ) {
if(element == value)
return true;
}
return false;
}
describe('has', function () {
it('should return true if value exists', function () {
expect(has([1,2,3], 1)).to.equal(true);
});
it('should return false if value does not exist', function() {
expect(has([1,2,3], 4)).to.equal(false);
});
});
mocha.run();
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