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diff --git a/test/tkt1567.test b/test/tkt1567.test
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+# 2005 December 19 2005
+#
+# 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 to verify that ticket #1567 is
+# fixed.  
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+do_test tkt1567-1.1 {
+  execsql {
+    CREATE TABLE t1(a TEXT PRIMARY KEY);
+  }
+  set bigstr abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
+  for {set i 0} {$i<100} {incr i} {
+    set x [format %5d [expr $i*2]]
+    set sql "INSERT INTO t1 VALUES('$x-$bigstr')"
+    execsql $sql
+  }
+} {}
+integrity_check tkt1567-1.2
+
+do_test tkt1567-1.3 {
+  execsql {
+    BEGIN;
+    UPDATE t1 SET a = a||'x' WHERE rowid%2==0;
+  }
+} {}
+do_test tkt1567-1.4 {
+  catchsql {
+    UPDATE t1 SET a = CASE WHEN rowid<90 THEN substr(a,1,10) ELSE '9999' END;
+  }
+} {1 {UNIQUE constraint failed: t1.a}}
+do_test tkt1567-1.5 {
+  execsql {
+    COMMIT;
+  }
+} {}
+integrity_check tkt1567-1.6
+
+do_test tkt1567-2.1 {
+  execsql {
+    CREATE TABLE t2(a TEXT PRIMARY KEY, rowid INT) WITHOUT rowid;
+  }
+  set bigstr abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
+  for {set i 0} {$i<100} {incr i} {
+    set x [format %5d [expr $i*2]]
+    set sql "INSERT INTO t2 VALUES('$x-$bigstr', $i+1)"
+    execsql $sql
+  }
+} {}
+integrity_check tkt1567-2.2
+
+do_test tkt1567-2.3 {
+  execsql {
+    BEGIN;
+    UPDATE t2 SET a = a||'x' WHERE rowid%2==0;
+  }
+} {}
+do_test tkt1567-2.4 {
+  catchsql {
+    UPDATE t2 SET a = CASE WHEN rowid<90 THEN substr(a,1,10) ELSE '9999' END;
+  }
+} {1 {UNIQUE constraint failed: t2.a}}
+do_test tkt1567-2.5 {
+  execsql {
+    COMMIT;
+  }
+} {}
+integrity_check tkt1567-2.6
+
+finish_test