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'use strict';
const assert = require('assert');const isIndexEqual = require('../../lib/helpers/indexes/isIndexEqual');
describe('isIndexEqual', function() {  it('ignores default collation options when comparing collations (gh-8994)', function() {    const key = { username: 1 };    const options = {      unique: true,      collation: {        locale: 'en',        strength: 2      }    };    const dbIndex = {      unique: true,      key: { username: 1 },      name: 'username_1',      background: true,      collation: {        locale: 'en',        caseLevel: false,        caseFirst: 'off',        strength: 2,        numericOrdering: false,        version: '57.1'      }    };
    assert.ok(isIndexEqual(key, options, dbIndex));
    dbIndex.collation.locale = 'de';    assert.ok(!isIndexEqual(key, options, dbIndex));  });
  it('works when MongoDB index has collation but Mongoose index doesn\'t (gh-9224)', function() {    const key = { username: 1 };    const options = {};    const dbIndex = {      unique: true,      key: { username: 1 },      name: 'username_1',      background: true,      collation: {        locale: 'en',        caseLevel: false,        caseFirst: 'off',        strength: 2,        numericOrdering: false,        version: '57.1'      }    };
    assert.ok(!isIndexEqual(key, options, dbIndex));  });
  it('handles text indexes (gh-9225)', function() {    const key = { name: 'text' };    const options = {};    const dbIndex = {      v: 2,      key: { _fts: 'text', _ftsx: 1 },      name: 'name_text',      ns: 'test.tests',      background: true,      weights: { name: 1 },      default_language: 'english',      language_override: 'language',      textIndexVersion: 3    };
    assert.ok(isIndexEqual(key, options, dbIndex));
    key.otherProp = 'text';    assert.ok(!isIndexEqual(key, options, dbIndex));
    delete key.otherProp;    options.weights = { name: 2 };    assert.ok(!isIndexEqual(key, options, dbIndex));
    options.weights.name = 1;    assert.ok(isIndexEqual(key, options, dbIndex));  });});