knex/test/tape/query-builder.js

'use strict';

const tape = require('tape');
const omit = require('lodash/omit');
const QueryBuilder = require('../../lib/query/builder');
const Client = require('../../lib/client');

tape('accumulates multiple update calls #647', function(t) {
  t.plan(1);
  const qb = new QueryBuilder({});
  qb.update('a', 1).update('b', 2);
  t.deepEqual(qb._single.update, { a: 1, b: 2 });
});

tape('allows for object syntax in join', function(t) {
  t.plan(1);
  const qb = new QueryBuilder(new Client({ client: 'mysql' }));
  const sql = qb
    .table('users')
    .innerJoin('accounts', {
      'accounts.id': 'users.account_id',
      'accounts.owner_id': 'users.id',
    })
    .toSQL('join');
  t.equal(
    sql.sql,
    'inner join "accounts" on "accounts"."id" = "users"."account_id" and "accounts"."owner_id" = "users"."id"'
  );
});

tape('clones correctly', function(t) {
  const qb = new QueryBuilder(new Client({ client: 'mysql' }));
  const original = qb
    .table('users')
    .debug()
    .innerJoin('accounts', {
      'accounts.id': 'users.account_id',
      'accounts.owner_id': 'users.id',
    });

  const cloned = original.clone();

  t.notEqual(original, cloned);

  // `deepEqual` freezes when it encounters circular references,
  // so they must be omitted.
  t.deepEqual(omit(cloned, 'client', 'and'), omit(original, 'client', 'and'));

  t.equal(cloned.client, original.client, 'clone references same client');

  t.equal(cloned.and, cloned, 'cloned `and` references self');

  t.end();
});