1 files changed, 288 insertions, 0 deletions
diff --git a/test/where5.test b/test/where5.test
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index 0000000..760224c
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+# 2007 June 8
+#
+# 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 NULL comparisons in the WHERE clause.
+# See ticket #2404.
+#
+# $Id: where5.test,v 1.2 2007/06/08 08:43:10 drh Exp $
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+# Build some test data
+#
+do_test where5-1.0 {
+  execsql {
+    CREATE TABLE t1(x TEXT);
+    CREATE TABLE t2(x INTEGER);
+    CREATE TABLE t3(x INTEGER PRIMARY KEY);
+    INSERT INTO t1 VALUES(-1);
+    INSERT INTO t1 VALUES(0);
+    INSERT INTO t1 VALUES(1);
+    INSERT INTO t2 SELECT * FROM t1;
+    INSERT INTO t3 SELECT * FROM t2;
+  }
+  execsql {
+    SELECT * FROM t1 WHERE x<0
+  }
+} {-1}
+do_test where5-1.1 {
+  execsql {
+    SELECT * FROM t1 WHERE x<=0
+  }
+} {-1 0}
+do_test where5-1.2 {
+  execsql {
+    SELECT * FROM t1 WHERE x=0
+  }
+} {0}
+do_test where5-1.3 {
+  execsql {
+    SELECT * FROM t1 WHERE x>=0
+  }
+} {0 1}
+do_test where5-1.4 {
+  execsql {
+    SELECT * FROM t1 WHERE x>0
+  }
+} {1}
+do_test where5-1.5 {
+  execsql {
+    SELECT * FROM t1 WHERE x<>0
+  }
+} {-1 1}
+do_test where5-1.6 {
+  execsql {
+    SELECT * FROM t1 WHERE x<NULL
+  }
+} {}
+do_test where5-1.7 {
+  execsql {
+    SELECT * FROM t1 WHERE x<=NULL
+  }
+} {}
+do_test where5-1.8 {
+  execsql {
+    SELECT * FROM t1 WHERE x=NULL
+  }
+} {}
+do_test where5-1.9 {
+  execsql {
+    SELECT * FROM t1 WHERE x>=NULL
+  }
+} {}
+do_test where5-1.10 {
+  execsql {
+    SELECT * FROM t1 WHERE x>NULL
+  }
+} {}
+do_test where5-1.11 {
+  execsql {
+    SELECT * FROM t1 WHERE x!=NULL
+  }
+} {}
+do_test where5-1.12 {
+  execsql {
+    SELECT * FROM t1 WHERE x IS NULL
+  }
+} {}
+do_test where5-1.13 {
+  execsql {
+    SELECT * FROM t1 WHERE x IS NOT NULL
+  }
+} {-1 0 1}
+
+
+do_test where5-2.0 {
+  execsql {
+    SELECT * FROM t2 WHERE x<0
+  }
+} {-1}
+do_test where5-2.1 {
+  execsql {
+    SELECT * FROM t2 WHERE x<=0
+  }
+} {-1 0}
+do_test where5-2.2 {
+  execsql {
+    SELECT * FROM t2 WHERE x=0
+  }
+} {0}
+do_test where5-2.3 {
+  execsql {
+    SELECT * FROM t2 WHERE x>=0
+  }
+} {0 1}
+do_test where5-2.4 {
+  execsql {
+    SELECT * FROM t2 WHERE x>0
+  }
+} {1}
+do_test where5-2.5 {
+  execsql {
+    SELECT * FROM t2 WHERE x<>0
+  }
+} {-1 1}
+do_test where5-2.6 {
+  execsql {
+    SELECT * FROM t2 WHERE x<NULL
+  }
+} {}
+do_test where5-2.7 {
+  execsql {
+    SELECT * FROM t2 WHERE x<=NULL
+  }
+} {}
+do_test where5-2.8 {
+  execsql {
+    SELECT * FROM t2 WHERE x=NULL
+  }
+} {}
+do_test where5-2.9 {
+  execsql {
+    SELECT * FROM t2 WHERE x>=NULL
+  }
+} {}
+do_test where5-2.10 {
+  execsql {
+    SELECT * FROM t2 WHERE x>NULL
+  }
+} {}
+do_test where5-2.11 {
+  execsql {
+    SELECT * FROM t2 WHERE x!=NULL
+  }
+} {}
+do_test where5-2.12 {
+  execsql {
+    SELECT * FROM t2 WHERE x IS NULL
+  }
+} {}
+do_test where5-2.13 {
+  execsql {
+    SELECT * FROM t2 WHERE x IS NOT NULL
+  }
+} {-1 0 1}
+
+
+do_test where5-3.0 {
+  execsql {
+    SELECT * FROM t3 WHERE x<0
+  }
+} {-1}
+do_test where5-3.1 {
+  execsql {
+    SELECT * FROM t3 WHERE x<=0
+  }
+} {-1 0}
+do_test where5-3.2 {
+  execsql {
+    SELECT * FROM t3 WHERE x=0
+  }
+} {0}
+do_test where5-3.3 {
+  execsql {
+    SELECT * FROM t3 WHERE x>=0
+  }
+} {0 1}
+do_test where5-3.4 {
+  execsql {
+    SELECT * FROM t3 WHERE x>0
+  }
+} {1}
+do_test where5-3.5 {
+  execsql {
+    SELECT * FROM t3 WHERE x<>0
+  }
+} {-1 1}
+do_test where5-3.6 {
+  execsql {
+    SELECT * FROM t3 WHERE x<NULL
+  }
+} {}
+do_test where5-3.7 {
+  execsql {
+    SELECT * FROM t3 WHERE x<=NULL
+  }
+} {}
+do_test where5-3.8 {
+  execsql {
+    SELECT * FROM t3 WHERE x=NULL
+  }
+} {}
+do_test where5-3.9 {
+  execsql {
+    SELECT * FROM t3 WHERE x>=NULL
+  }
+} {}
+do_test where5-3.10 {
+  execsql {
+    SELECT * FROM t3 WHERE x>NULL
+  }
+} {}
+do_test where5-3.11 {
+  execsql {
+    SELECT * FROM t3 WHERE x!=NULL
+  }
+} {}
+do_test where5-3.12 {
+  execsql {
+    SELECT * FROM t3 WHERE x IS NULL
+  }
+} {}
+do_test where5-3.13 {
+  execsql {
+    SELECT * FROM t3 WHERE x IS NOT NULL
+  }
+} {-1 0 1}
+
+do_test where5-4.0 {
+  execsql {
+    SELECT x<NULL FROM t3
+  }
+} {{} {} {}}
+do_test where5-4.1 {
+  execsql {
+    SELECT x<=NULL FROM t3
+  }
+} {{} {} {}}
+do_test where5-4.2 {
+  execsql {
+    SELECT x==NULL FROM t3
+  }
+} {{} {} {}}
+do_test where5-4.3 {
+  execsql {
+    SELECT x>NULL FROM t3
+  }
+} {{} {} {}}
+do_test where5-4.4 {
+  execsql {
+    SELECT x>=NULL FROM t3
+  }
+} {{} {} {}}
+do_test where5-4.5 {
+  execsql {
+    SELECT x!=NULL FROM t3
+  }
+} {{} {} {}}
+do_test where5-4.6 {
+  execsql {
+    SELECT x IS NULL FROM t3
+  }
+} {0 0 0}
+do_test where5-4.7 {
+  execsql {
+    SELECT x IS NOT NULL FROM t3
+  }
+} {1 1 1}
+
+finish_test