'use strict';

const common = require('../common');
const assert = require('assert');
const URLSearchParams = require('url').URLSearchParams;

// Tests below are not from WPT.
const params = new URLSearchParams('a=b&c=d');
const entries = params.entries();
assert.strictEqual(typeof entries[Symbol.iterator], 'function');
assert.strictEqual(entries[Symbol.iterator](), entries);
assert.deepStrictEqual(entries.next(), {
  value: ['a', 'b'],
  done: false
});
assert.deepStrictEqual(entries.next(), {
  value: ['c', 'd'],
  done: false
});
assert.deepStrictEqual(entries.next(), {
  value: undefined,
  done: true
});
assert.deepStrictEqual(entries.next(), {
  value: undefined,
  done: true
});

assert.throws(() => {
  entries.next.call(undefined);
}, common.expectsError({
  code: 'ERR_INVALID_THIS',
  type: TypeError,
  message: 'Value of "this" must be of type URLSearchParamsIterator'
}));
assert.throws(() => {
  params.entries.call(undefined);
}, common.expectsError({
  code: 'ERR_INVALID_THIS',
  type: TypeError,
  message: 'Value of "this" must be of type URLSearchParams'
}));