Move bundled copy of sqlite one level deeper to better separate it...

third_party/sqlite/test/null.test

-# 2001 September 15
-#
-# 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.
-#
-# This file implements tests for proper treatment of the special
-# value NULL.
-#
-
-set testdir [file dirname $argv0]
-source $testdir/tester.tcl
-
-# Create a table and some data to work with.
-#
-do_test null-1.0 {
-  execsql {
-    begin;
-    create table t1(a,b,c);
-    insert into t1 values(1,0,0);
-    insert into t1 values(2,0,1);
-    insert into t1 values(3,1,0);
-    insert into t1 values(4,1,1);
-    insert into t1 values(5,null,0);
-    insert into t1 values(6,null,1);
-    insert into t1 values(7,null,null);
-    commit;
-    select * from t1;
-  }
-} {1 0 0 2 0 1 3 1 0 4 1 1 5 {} 0 6 {} 1 7 {} {}}
-
-# Check for how arithmetic expressions handle NULL
-#
-do_test null-1.1 {
-  execsql {
-    select ifnull(a+b,99) from t1;
-  }
-} {1 2 4 5 99 99 99}
-do_test null-1.2 {
-  execsql {
-    select ifnull(b*c,99) from t1;
-  }
-} {0 0 0 1 99 99 99}
-
-# Check to see how the CASE expression handles NULL values.  The
-# first WHEN for which the test expression is TRUE is selected.
-# FALSE and UNKNOWN test expressions are skipped.
-#
-do_test null-2.1 {
-  execsql {
-    select ifnull(case when b<>0 then 1 else 0 end, 99) from t1;
-  }
-} {0 0 1 1 0 0 0}
-do_test null-2.2 {
-  execsql {
-    select ifnull(case when not b<>0 then 1 else 0 end, 99) from t1;
-  }
-} {1 1 0 0 0 0 0}
-do_test null-2.3 {
-  execsql {
-    select ifnull(case when b<>0 and c<>0 then 1 else 0 end, 99) from t1;
-  }
-} {0 0 0 1 0 0 0}
-do_test null-2.4 {
-  execsql {
-    select ifnull(case when not (b<>0 and c<>0) then 1 else 0 end, 99) from t1;
-  }
-} {1 1 1 0 1 0 0}
-do_test null-2.5 {
-  execsql {
-    select ifnull(case when b<>0 or c<>0 then 1 else 0 end, 99) from t1;
-  }
-} {0 1 1 1 0 1 0}
-do_test null-2.6 {
-  execsql {
-    select ifnull(case when not (b<>0 or c<>0) then 1 else 0 end, 99) from t1;
-  }
-} {1 0 0 0 0 0 0}
-do_test null-2.7 {
-  execsql {
-    select ifnull(case b when c then 1 else 0 end, 99) from t1;
-  }
-} {1 0 0 1 0 0 0}
-do_test null-2.8 {
-  execsql {
-    select ifnull(case c when b then 1 else 0 end, 99) from t1;
-  }
-} {1 0 0 1 0 0 0}
-
-# Check to see that NULL values are ignored in aggregate functions.
-#
-do_test null-3.1 {
-  execsql {
-    select count(*), count(b), count(c), sum(b), sum(c), 
-           avg(b), avg(c), min(b), max(b) from t1;
-  }
-} {7 4 6 2 3 0.5 0.5 0 1}
-
-# The sum of zero entries is a NULL, but the total of zero entries is 0.
-#
-do_test null-3.2 {
-  execsql {
-    SELECT sum(b), total(b) FROM t1 WHERE b<0
-  }
-} {{} 0.0}
-
-# Check to see how WHERE clauses handle NULL values.  A NULL value
-# is the same as UNKNOWN.  The WHERE clause should only select those
-# rows that are TRUE.  FALSE and UNKNOWN rows are rejected.
-#
-do_test null-4.1 {
-  execsql {
-    select a from t1 where b<10
-  }
-} {1 2 3 4}
-do_test null-4.2 {
-  execsql {
-    select a from t1 where not b>10
-  }
-} {1 2 3 4}
-do_test null-4.3 {
-  execsql {
-    select a from t1 where b<10 or c=1;
-  }
-} {1 2 3 4 6}
-do_test null-4.4 {
-  execsql {
-    select a from t1 where b<10 and c=1;
-  }
-} {2 4}
-do_test null-4.5 {
-  execsql {
-    select a from t1 where not (b<10 and c=1);
-  }
-} {1 3 5}
-
-# The DISTINCT keyword on a SELECT statement should treat NULL values
-# as distinct
-#
-do_test null-5.1 {
-  execsql {
-    select distinct b from t1 order by b;
-  }
-} {{} 0 1}
-
-# A UNION to two queries should treat NULL values
-# as distinct.
-#
-# (Later:)  We also take this opportunity to test the ability
-# of an ORDER BY clause to bind to either SELECT of a UNION.
-# The left-most SELECT is preferred.  In standard SQL, only
-# the left SELECT can be used.  The ability to match an ORDER
-# BY term to the right SELECT is an SQLite extension.
-#
-ifcapable compound {
-  do_test null-6.1 {
-    execsql {
-      select b from t1 union select c from t1 order by b;
-    }
-  } {{} 0 1}
-  do_test null-6.2 {
-    execsql {
-      select b from t1 union select c from t1 order by 1;
-    }
-  } {{} 0 1}
-  do_test null-6.3 {
-    execsql {
-      select b from t1 union select c from t1 order by t1.b;
-    }
-  } {{} 0 1}
-  do_test null-6.4 {
-    execsql {
-      select b from t1 union select c from t1 order by main.t1.b;
-    }
-  } {{} 0 1}
-  do_test null-6.5 {
-    catchsql {
-      select b from t1 union select c from t1 order by t1.a;
-    }
-  } {1 {1st ORDER BY term does not match any column in the result set}}
-  do_test null-6.6 {
-    catchsql {
-      select b from t1 union select c from t1 order by main.t1.a;
-    }
-  } {1 {1st ORDER BY term does not match any column in the result set}}
-} ;# ifcapable compound
-
-# The UNIQUE constraint only applies to non-null values
-#
-ifcapable conflict {
-do_test null-7.1 {
-    execsql {
-      create table t2(a, b unique on conflict ignore);
-      insert into t2 values(1,1);
-      insert into t2 values(2,null);
-      insert into t2 values(3,null);
-      insert into t2 values(4,1);
-      select a from t2;
-    }
-  } {1 2 3}
-  do_test null-7.2 {
-    execsql {
-      create table t3(a, b, c, unique(b,c) on conflict ignore);
-      insert into t3 values(1,1,1);
-      insert into t3 values(2,null,1);
-      insert into t3 values(3,null,1);
-      insert into t3 values(4,1,1);
-      select a from t3;
-    }
-  } {1 2 3}
-}
-
-# Ticket #461 - Make sure nulls are handled correctly when doing a
-# lookup using an index.
-#
-do_test null-8.1 {
-  execsql {
-    CREATE TABLE t4(x,y);
-    INSERT INTO t4 VALUES(1,11);
-    INSERT INTO t4 VALUES(2,NULL);
-    SELECT x FROM t4 WHERE y=NULL;
-  }
-} {}
-ifcapable subquery {
-  do_test null-8.2 {
-    execsql {
-      SELECT x FROM t4 WHERE y IN (33,NULL);
-    }
-  } {}
-}
-do_test null-8.3 {
-  execsql {
-    SELECT x FROM t4 WHERE y<33 ORDER BY x;
-  }
-} {1}
-do_test null-8.4 {
-  execsql {
-    SELECT x FROM t4 WHERE y>6 ORDER BY x;
-  }
-} {1}
-do_test null-8.5 {
-  execsql {
-    SELECT x FROM t4 WHERE y!=33 ORDER BY x;
-  }
-} {1}
-do_test null-8.11 {
-  execsql {
-    CREATE INDEX t4i1 ON t4(y);
-    SELECT x FROM t4 WHERE y=NULL;
-  }
-} {}
-ifcapable subquery {
-  do_test null-8.12 {
-    execsql {
-      SELECT x FROM t4 WHERE y IN (33,NULL);
-    }
-  } {}
-}
-do_test null-8.13 {
-  execsql {
-    SELECT x FROM t4 WHERE y<33 ORDER BY x;
-  }
-} {1}
-do_test null-8.14 {
-  execsql {
-    SELECT x FROM t4 WHERE y>6 ORDER BY x;
-  }
-} {1}
-do_test null-8.15 {
-  execsql {
-    SELECT x FROM t4 WHERE y!=33 ORDER BY x;
-  }
-} {1}
-
-
-
-finish_test