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