sqlpp11/tests/core/serialize/clause/from.cpp

/*
 * Copyright (c) 2024, Roland Bock
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "Sample.h"
#include "../compare.h"
#include <sqlpp11/sqlpp11.h>

int main()
{
  const auto foo = test::TabFoo{};
  const auto bar = test::TabBar{};
  const auto aFoo = foo.as(sqlpp::alias::a);
  const auto bFoo = foo.as(sqlpp::alias::b);
  const auto cFoo = foo.as(sqlpp::alias::c);

  const auto x = cte(sqlpp::alias::x).as(select(foo.id).from(foo).unconditionally());
  const auto xa = x.as(sqlpp::alias::a);
  const auto xb = x.as(sqlpp::alias::b);
  const auto y = cte(sqlpp::alias::y).as(select(foo.id).from(foo).unconditionally());

  // Single table
  SQLPP_COMPARE(from(foo), " FROM tab_foo");

  // Tests with joined tables are mostly covered by join tests.

  // Static joins
  SQLPP_COMPARE(from(foo.cross_join(bar)), " FROM tab_foo CROSS JOIN tab_bar");
  SQLPP_COMPARE(from(foo.join(bar).on(foo.id == bar.id)),
          " FROM tab_foo INNER JOIN tab_bar ON tab_foo.id = tab_bar.id");

  // Multiple tables
  SQLPP_COMPARE(from(aFoo.join(bFoo).on(aFoo.id == bFoo.id).join(cFoo).on(bFoo.id == cFoo.id)),
      " FROM tab_foo AS a INNER JOIN tab_foo AS b ON a.id = b.id INNER JOIN tab_foo AS c ON b.id = c.id");

  // CTE
  SQLPP_COMPARE(from(x), " FROM x");
  SQLPP_COMPARE(from(foo.join(x).on(x.id == foo.id)), " FROM tab_foo INNER JOIN x ON x.id = tab_foo.id");
  SQLPP_COMPARE(from(x.join(foo).on(x.id == foo.id)), " FROM x INNER JOIN tab_foo ON x.id = tab_foo.id");
  SQLPP_COMPARE(from(x.join(y).on(x.id == y.id)), " FROM x INNER JOIN y ON x.id = y.id");
#warning: Some of these should go into CTE tests
  SQLPP_COMPARE(xa, "x AS a");
  SQLPP_COMPARE(xa.id == xb.id, "a.id = b.id");
  SQLPP_COMPARE(from(xa.join(xb).on(xa.id == xb.id)), " FROM x AS a INNER JOIN x AS b ON a.id = b.id");

#warning add tests for dynamic joins

  return 0;
}