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+# 2007 March 28
+#
+# The author disclaims copyright to this source code.
+#
+#*************************************************************************
+# This file implements regression tests for SQLite library.  The focus
+# of this script is testing isspace/isalnum/tolower problems with the
+# FTS3 module.  Unfortunately, this code isn't a really principled set
+# of tests, because it is impossible to know where new uses of these
+# functions might appear.
+#
+# $Id: fts3al.test,v 1.2 2007/12/13 21:54:11 drh Exp $
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+# If SQLITE_ENABLE_FTS3 is defined, omit this file.
+ifcapable !fts3 {
+  finish_test
+  return
+}
+
+# Tests that startsWith() (calls isspace, tolower, isalnum) can handle
+# hi-bit chars.  parseSpec() also calls isalnum here.
+do_test fts3al-1.1 {
+  execsql "CREATE VIRTUAL TABLE t1 USING fts3(content, \x80)"
+} {}
+
+# Additionally tests isspace() call in getToken(), and isalnum() call
+# in tokenListToIdList().
+do_test fts3al-1.2 {
+  catch {
+    execsql "CREATE VIRTUAL TABLE t2 USING fts3(content, tokenize \x80)"
+  }
+  sqlite3_errmsg $DB
+} "unknown tokenizer: \x80"
+
+# Additionally test final isalnum() in startsWith().
+do_test fts3al-1.3 {
+  execsql "CREATE VIRTUAL TABLE t3 USING fts3(content, tokenize\x80)"
+} {}
+
+# The snippet-generation code has calls to isspace() which are sort of
+# hard to get to.  It finds convenient breakpoints by starting ~40
+# chars before and after the matched term, and scanning ~10 chars
+# around that position for isspace() characters.  The long word with
+# embedded hi-bit chars causes one of these isspace() calls to be
+# exercised.  The version with a couple extra spaces should cause the
+# other isspace() call to be exercised.  [Both cases have been tested
+# in the debugger, but I'm hoping to continue to catch it if simple
+# constant changes change things slightly.
+#
+# The trailing and leading hi-bit chars help with code which tests for
+# isspace() to coalesce multiple spaces.
+#
+# UPDATE: The above is no longer true; there is no such code in fts3.
+# But leave the test in just the same.
+# 
+
+set word "\x80xxxxx\x80xxxxx\x80xxxxx\x80xxxxx\x80xxxxx\x80xxxxx\x80"
+set phrase1 "$word $word $word target $word $word $word"
+set phrase2 "$word $word $word    target    $word $word $word"
+
+db eval {CREATE VIRTUAL TABLE t4 USING fts3(content)}
+db eval "INSERT INTO t4 (content) VALUES ('$phrase1')"
+db eval "INSERT INTO t4 (content) VALUES ('$phrase2')"
+
+do_test fts3al-1.4 {
+  execsql {SELECT rowid, length(snippet(t4)) FROM t4 WHERE t4 MATCH 'target'}
+} {1 241 2 247}
+
+finish_test