sl@0: # 2007 April 27
sl@0: #
sl@0: # The author disclaims copyright to this source code.  In place of
sl@0: # a legal notice, here is a blessing:
sl@0: #
sl@0: #    May you do good and not evil.
sl@0: #    May you find forgiveness for yourself and forgive others.
sl@0: #    May you share freely, never taking more than you give.
sl@0: #
sl@0: #***********************************************************************
sl@0: # This file implements regression tests for SQLite library.
sl@0: #
sl@0: # The focus of the tests in this file are to verify that the
sl@0: # underlying TEXT or BLOB representation of an sqlite3_value
sl@0: # changes appropriately when APIs from the following set are
sl@0: # called:
sl@0: #
sl@0: #     sqlite3_value_text()
sl@0: #     sqlite3_value_text16()
sl@0: #     sqlite3_value_blob()
sl@0: #     sqlite3_value_bytes()
sl@0: #     sqlite3_value_bytes16()
sl@0: #
sl@0: # $Id: ptrchng.test,v 1.5 2008/07/12 14:52:20 drh Exp $
sl@0: 
sl@0: set testdir [file dirname $argv0]
sl@0: source $testdir/tester.tcl
sl@0: 
sl@0: ifcapable !bloblit {
sl@0:   finish_test
sl@0:   return
sl@0: }
sl@0: 
sl@0: # Register the "pointer_change" SQL function.
sl@0: #
sl@0: sqlite3_create_function db
sl@0: 
sl@0: do_test ptrchng-1.1 {
sl@0:   execsql {
sl@0:     CREATE TABLE t1(x INTEGER PRIMARY KEY, y BLOB);
sl@0:     INSERT INTO t1 VALUES(1, 'abc');
sl@0:     INSERT INTO t1 VALUES(2, 
sl@0:        'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234356789');
sl@0:     INSERT INTO t1 VALUES(3, x'626c6f62');
sl@0:     INSERT INTO t1 VALUES(4,
sl@0:  x'000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f2021222324'
sl@0:     );
sl@0:     SELECT count(*) FROM t1;
sl@0:   }
sl@0: } {4}
sl@0: 
sl@0: # For the short entries that fit in the Mem.zBuf[], the pointer should
sl@0: # never change regardless of what type conversions occur.
sl@0: #
sl@0: # UPDATE: No longer true, as Mem.zBuf[] has been removed.
sl@0: #
sl@0: do_test ptrchng-2.1 {
sl@0:   execsql {
sl@0:     SELECT pointer_change(y, 'text', 'noop', 'blob') FROM t1 WHERE x=1
sl@0:   }
sl@0: } {0}
sl@0: do_test ptrchng-2.2 {
sl@0:   execsql {
sl@0:     SELECT pointer_change(y, 'blob', 'noop', 'text') FROM t1 WHERE x=1
sl@0:   }
sl@0: } {0}
sl@0: ifcapable utf16 {
sl@0:   do_test ptrchng-2.3 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'text', 'noop', 'text16') FROM t1 WHERE x=1
sl@0:     }
sl@0:   } {1}
sl@0:   do_test ptrchng-2.4 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'blob', 'noop', 'text16') FROM t1 WHERE x=1
sl@0:     }
sl@0:   } {1}
sl@0:   do_test ptrchng-2.5 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'text16', 'noop', 'blob') FROM t1 WHERE x=1
sl@0:     }
sl@0:   } {0}
sl@0:   do_test ptrchng-2.6 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'text16', 'noop', 'text') FROM t1 WHERE x=1
sl@0:     }
sl@0:   } {1}
sl@0: }
sl@0: do_test ptrchng-2.11 {
sl@0:   execsql {
sl@0:     SELECT pointer_change(y, 'text', 'noop', 'blob') FROM t1 WHERE x=3
sl@0:   }
sl@0: } {0}
sl@0: do_test ptrchng-2.12 {
sl@0:   execsql {
sl@0:     SELECT pointer_change(y, 'blob', 'noop', 'text') FROM t1 WHERE x=3
sl@0:   }
sl@0: } {0}
sl@0: ifcapable utf16 {
sl@0:   do_test ptrchng-2.13 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'text', 'noop', 'text16') FROM t1 WHERE x=3
sl@0:     }
sl@0:   } {1}
sl@0:   do_test ptrchng-2.14 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'blob', 'noop', 'text16') FROM t1 WHERE x=3
sl@0:     }
sl@0:   } {1}
sl@0:   do_test ptrchng-2.15 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'text16', 'noop', 'blob') FROM t1 WHERE x=3
sl@0:     }
sl@0:   } {0}
sl@0:   do_test ptrchng-2.16 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'text16', 'noop', 'text') FROM t1 WHERE x=3
sl@0:     }
sl@0:   } {1}
sl@0: }
sl@0: 
sl@0: # For the long entries that do not fit in the Mem.zBuf[], the pointer
sl@0: # should change sometimes.
sl@0: #
sl@0: do_test ptrchng-3.1 {
sl@0:   execsql {
sl@0:     SELECT pointer_change(y, 'text', 'noop', 'blob') FROM t1 WHERE x=2
sl@0:   }
sl@0: } {0}
sl@0: do_test ptrchng-3.2 {
sl@0:   execsql {
sl@0:     SELECT pointer_change(y, 'blob', 'noop', 'text') FROM t1 WHERE x=2
sl@0:   }
sl@0: } {0}
sl@0: ifcapable utf16 {
sl@0:   do_test ptrchng-3.3 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'text', 'noop', 'text16') FROM t1 WHERE x=2
sl@0:     }
sl@0:   } {1}
sl@0:   do_test ptrchng-3.4 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'blob', 'noop', 'text16') FROM t1 WHERE x=2
sl@0:     }
sl@0:   } {1}
sl@0:   do_test ptrchng-3.5 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'text16', 'noop', 'blob') FROM t1 WHERE x=2
sl@0:     }
sl@0:   } {0}
sl@0:   do_test ptrchng-3.6 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'text16', 'noop', 'text') FROM t1 WHERE x=2
sl@0:     }
sl@0:   } {1}
sl@0: }
sl@0: do_test ptrchng-3.11 {
sl@0:   execsql {
sl@0:     SELECT pointer_change(y, 'text', 'noop', 'blob') FROM t1 WHERE x=4
sl@0:   }
sl@0: } {0}
sl@0: do_test ptrchng-3.12 {
sl@0:   execsql {
sl@0:     SELECT pointer_change(y, 'blob', 'noop', 'text') FROM t1 WHERE x=4
sl@0:   }
sl@0: } {0}
sl@0: ifcapable utf16 {
sl@0:   do_test ptrchng-3.13 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'text', 'noop', 'text16') FROM t1 WHERE x=4
sl@0:     }
sl@0:   } {1}
sl@0:   do_test ptrchng-3.14 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'blob', 'noop', 'text16') FROM t1 WHERE x=4
sl@0:     }
sl@0:   } {1}
sl@0:   do_test ptrchng-3.15 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'text16', 'noop', 'blob') FROM t1 WHERE x=4
sl@0:     }
sl@0:   } {0}
sl@0:   do_test ptrchng-3.16 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'text16', 'noop', 'text') FROM t1 WHERE x=4
sl@0:     }
sl@0:   } {1}
sl@0: }
sl@0: 
sl@0: # A call to _bytes() should never reformat a _text() or _blob().
sl@0: #
sl@0: do_test ptrchng-4.1 {
sl@0:   execsql {
sl@0:     SELECT pointer_change(y, 'text', 'bytes', 'text') FROM t1
sl@0:   }
sl@0: } {0 0 0 0}
sl@0: do_test ptrchng-4.2 {
sl@0:   execsql {
sl@0:     SELECT pointer_change(y, 'blob', 'bytes', 'blob') FROM t1
sl@0:   }
sl@0: } {0 0 0 0}
sl@0: 
sl@0: # A call to _blob() should never trigger a reformat
sl@0: #
sl@0: do_test ptrchng-5.1 {
sl@0:   execsql {
sl@0:     SELECT pointer_change(y, 'text', 'bytes', 'blob') FROM t1
sl@0:   }
sl@0: } {0 0 0 0}
sl@0: ifcapable utf16 {
sl@0:   do_test ptrchng-5.2 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'text16', 'noop', 'blob') FROM t1
sl@0:     }
sl@0:   } {0 0 0 0}
sl@0:   do_test ptrchng-5.3 {
sl@0:     execsql {
sl@0:       SELECT pointer_change(y, 'text16', 'bytes16', 'blob') FROM t1
sl@0:     }
sl@0:   } {0 0 0 0}
sl@0: }
sl@0: 
sl@0: finish_test