# 2005 November 2
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing CHECK constraints
#
# $Id: check.test,v 1.11 2007/07/23 19:39:47 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Only run these tests if the build includes support for CHECK constraints
ifcapable !check {
  finish_test
  return
}

do_test check-1.1 {
  execsql {
    CREATE TABLE t1(
      x INTEGER CHECK( x<5 ),
      y REAL CHECK( y>x )
    );
  }
} {}
do_test check-1.2 {
  execsql {
    INSERT INTO t1 VALUES(3,4);
    SELECT * FROM t1;
  }  
} {3 4.0}
do_test check-1.3 {
  catchsql {
    INSERT INTO t1 VALUES(6,7);
  }
} {1 {constraint failed}}
do_test check-1.4 {
  execsql {
    SELECT * FROM t1;
  }  
} {3 4.0}
do_test check-1.5 {
  catchsql {
    INSERT INTO t1 VALUES(4,3);
  }
} {1 {constraint failed}}
do_test check-1.6 {
  execsql {
    SELECT * FROM t1;
  }  
} {3 4.0}
do_test check-1.7 {
  catchsql {
    INSERT INTO t1 VALUES(NULL,6);
  }
} {0 {}}
do_test check-1.8 {
  execsql {
    SELECT * FROM t1;
  }  
} {3 4.0 {} 6.0}
do_test check-1.9 {
  catchsql {
    INSERT INTO t1 VALUES(2,NULL);
  }
} {0 {}}
do_test check-1.10 {
  execsql {
    SELECT * FROM t1;
  }  
} {3 4.0 {} 6.0 2 {}}
do_test check-1.11 {
  execsql {
    DELETE FROM t1 WHERE x IS NULL OR x!=3;
    UPDATE t1 SET x=2 WHERE x==3;
    SELECT * FROM t1;
  }
} {2 4.0}
do_test check-1.12 {
  catchsql {
    UPDATE t1 SET x=7 WHERE x==2
  }
} {1 {constraint failed}}
do_test check-1.13 {
  execsql {
    SELECT * FROM t1;
  }
} {2 4.0}
do_test check-1.14 {
  catchsql {
    UPDATE t1 SET x=5 WHERE x==2
  }
} {1 {constraint failed}}
do_test check-1.15 {
  execsql {
    SELECT * FROM t1;
  }
} {2 4.0}
do_test check-1.16 {
  catchsql {
    UPDATE t1 SET x=4, y=11 WHERE x==2
  }
} {0 {}}
do_test check-1.17 {
  execsql {
    SELECT * FROM t1;
  }
} {4 11.0}

do_test check-2.1 {
  execsql {
    CREATE TABLE t2(
      x INTEGER CHECK( typeof(coalesce(x,0))=="integer" ),
      y REAL CHECK( typeof(coalesce(y,0.1))=="real" ),
      z TEXT CHECK( typeof(coalesce(z,''))=="text" )
    );
  }
} {}
do_test check-2.2 {
  execsql {
    INSERT INTO t2 VALUES(1,2.2,'three');
    SELECT * FROM t2;
  }
} {1 2.2 three}
do_test check-2.3 {
  execsql {
    INSERT INTO t2 VALUES(NULL, NULL, NULL);
    SELECT * FROM t2;
  }
} {1 2.2 three {} {} {}}
do_test check-2.4 {
  catchsql {
    INSERT INTO t2 VALUES(1.1, NULL, NULL);
  }
} {1 {constraint failed}}
do_test check-2.5 {
  catchsql {
    INSERT INTO t2 VALUES(NULL, 5, NULL);
  }
} {1 {constraint failed}}
do_test check-2.6 {
  catchsql {
    INSERT INTO t2 VALUES(NULL, NULL, 3.14159);
  }
} {1 {constraint failed}}

ifcapable subquery {
  do_test check-3.1 {
    catchsql {
      CREATE TABLE t3(
        x, y, z,
        CHECK( x<(SELECT min(x) FROM t1) )
      );
    }
  } {1 {subqueries prohibited in CHECK constraints}}
}

do_test check-3.2 {
  execsql {
    SELECT name FROM sqlite_master ORDER BY name
  }
} {t1 t2}
do_test check-3.3 {
  catchsql {
    CREATE TABLE t3(
      x, y, z,
      CHECK( q<x )
    );
  }
} {1 {no such column: q}}
do_test check-3.4 {
  execsql {
    SELECT name FROM sqlite_master ORDER BY name
  }
} {t1 t2}
do_test check-3.5 {
  catchsql {
    CREATE TABLE t3(
      x, y, z,
      CHECK( t2.x<x )
    );
  }
} {1 {no such column: t2.x}}
do_test check-3.6 {
  execsql {
    SELECT name FROM sqlite_master ORDER BY name
  }
} {t1 t2}
do_test check-3.7 {
  catchsql {
    CREATE TABLE t3(
      x, y, z,
      CHECK( t3.x<25 )
    );
  }
} {0 {}}
do_test check-3.8 {
  execsql {
    INSERT INTO t3 VALUES(1,2,3);
    SELECT * FROM t3;
  }
} {1 2 3}
do_test check-3.9 {
  catchsql {
    INSERT INTO t3 VALUES(111,222,333);
  }
} {1 {constraint failed}}

do_test check-4.1 {
  execsql {
    CREATE TABLE t4(x, y,
      CHECK (
           x+y==11
        OR x*y==12
        OR x/y BETWEEN 5 AND 8
        OR -x==y+10
      )
    );
  }
} {}
do_test check-4.2 {
  execsql {
    INSERT INTO t4 VALUES(1,10);
    SELECT * FROM t4
  }
} {1 10}
do_test check-4.3 {
  execsql {
    UPDATE t4 SET x=4, y=3;
    SELECT * FROM t4
  }
} {4 3}
do_test check-4.3 {
  execsql {
    UPDATE t4 SET x=12, y=2;
    SELECT * FROM t4
  }
} {12 2}
do_test check-4.4 {
  execsql {
    UPDATE t4 SET x=12, y=-22;
    SELECT * FROM t4
  }
} {12 -22}
do_test check-4.5 {
  catchsql {
    UPDATE t4 SET x=0, y=1;
  }
} {1 {constraint failed}}
do_test check-4.6 {
  execsql {
    SELECT * FROM t4;
  }
} {12 -22}
do_test check-4.7 {
  execsql {
    PRAGMA ignore_check_constraints=ON;
    UPDATE t4 SET x=0, y=1;
    SELECT * FROM t4;
  }
} {0 1}
do_test check-4.8 {
  catchsql {
    PRAGMA ignore_check_constraints=OFF;
    UPDATE t4 SET x=0, y=2;
  }
} {1 {constraint failed}}
ifcapable vacuum {
  do_test check_4.9 {
    catchsql {
      VACUUM
    }
  } {0 {}}
}

do_test check-5.1 {
  catchsql {
    CREATE TABLE t5(x, y,
      CHECK( x*y<:abc )
    );
  }
} {1 {parameters prohibited in CHECK constraints}}
do_test check-5.2 {
  catchsql {
    CREATE TABLE t5(x, y,
      CHECK( x*y<? )
    );
  }
} {1 {parameters prohibited in CHECK constraints}}

ifcapable conflict {

do_test check-6.1 {
  execsql {SELECT * FROM t1}
} {4 11.0}
do_test check-6.2 {
  execsql {
    UPDATE OR IGNORE t1 SET x=5;
    SELECT * FROM t1;
  }
} {4 11.0}
do_test check-6.3 {
  execsql {
    INSERT OR IGNORE INTO t1 VALUES(5,4.0);
    SELECT * FROM t1;
  }
} {4 11.0}
do_test check-6.4 {
  execsql {
    INSERT OR IGNORE INTO t1 VALUES(2,20.0);
    SELECT * FROM t1;
  }
} {4 11.0 2 20.0}
do_test check-6.5 {
  catchsql {
    UPDATE OR FAIL t1 SET x=7-x, y=y+1;
  }
} {1 {constraint failed}}
do_test check-6.6 {
  execsql {
    SELECT * FROM t1;
  }
} {3 12.0 2 20.0}
do_test check-6.7 {
  catchsql {
    BEGIN;
    INSERT INTO t1 VALUES(1,30.0);
    INSERT OR ROLLBACK INTO t1 VALUES(8,40.0);
  }
} {1 {constraint failed}}
do_test check-6.8 {
  catchsql {
    COMMIT;
  }
} {1 {cannot commit - no transaction is active}}
do_test check-6.9 {
  execsql {
    SELECT * FROM t1
  }
} {3 12.0 2 20.0}

do_test check-6.11 {
  execsql {SELECT * FROM t1}
} {3 12.0 2 20.0}
do_test check-6.12 {
  catchsql {
    REPLACE INTO t1 VALUES(6,7);
  }
} {1 {constraint failed}}
do_test check-6.13 {
  execsql {SELECT * FROM t1}
} {3 12.0 2 20.0}
do_test check-6.14 {
  catchsql {
    INSERT OR IGNORE INTO t1 VALUES(6,7);
  }
} {0 {}}
do_test check-6.15 {
  execsql {SELECT * FROM t1}
} {3 12.0 2 20.0}


}

finish_test
