'use strict';

const common = require('../common');
const assert = require('assert');
const URLSearchParams = require('url').URLSearchParams;
const { test, assert_equals, assert_true } = require('../common/wpt');

/* The following tests are copied from WPT. Modifications to them should be
   upstreamed first. Refs:
   https://github.com/w3c/web-platform-tests/blob/8791bed/url/urlsearchparams-set.html
   License: http://www.w3.org/Consortium/Legal/2008/04-testsuite-copyright.html
*/
/* eslint-disable */
test(function() {
    var params = new URLSearchParams('a=b&c=d');
    params.set('a', 'B');
    assert_equals(params + '', 'a=B&c=d');
    params = new URLSearchParams('a=b&c=d&a=e');
    params.set('a', 'B');
    assert_equals(params + '', 'a=B&c=d')
    params.set('e', 'f');
    assert_equals(params + '', 'a=B&c=d&e=f')
}, 'Set basics');

test(function() {
    var params = new URLSearchParams('a=1&a=2&a=3');
    assert_true(params.has('a'), 'Search params object has name "a"');
    assert_equals(params.get('a'), '1', 'Search params object has name "a" with value "1"');
    params.set('first', 4);
    assert_true(params.has('a'), 'Search params object has name "a"');
    assert_equals(params.get('a'), '1', 'Search params object has name "a" with value "1"');
    params.set('a', 4);
    assert_true(params.has('a'), 'Search params object has name "a"');
    assert_equals(params.get('a'), '4', 'Search params object has name "a" with value "4"');
}, 'URLSearchParams.set');
/* eslint-enable */

// Tests below are not from WPT.
{
  const params = new URLSearchParams();
  assert.throws(() => {
    params.set.call(undefined);
  }, common.expectsError({
    code: 'ERR_INVALID_THIS',
    type: TypeError,
    message: 'Value of "this" must be of type URLSearchParams'
  }));
  assert.throws(() => {
    params.set('a');
  }, common.expectsError({
    code: 'ERR_MISSING_ARGS',
    type: TypeError,
    message: 'The "name" and "value" arguments must be specified'
  }));

  const obj = {
    toString() { throw new Error('toString'); },
    valueOf() { throw new Error('valueOf'); }
  };
  const sym = Symbol();
  assert.throws(() => params.append(obj, 'b'), /^Error: toString$/);
  assert.throws(() => params.append('a', obj), /^Error: toString$/);
  assert.throws(() => params.append(sym, 'b'),
                /^TypeError: Cannot convert a Symbol value to a string$/);
  assert.throws(() => params.append('a', sym),
                /^TypeError: Cannot convert a Symbol value to a string$/);
}