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# 2011 January 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 this script is testing the FTS3 module.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
ifcapable !fts3 { finish_test ; return }
set ::testprefix fts3comp1
# Create a pretend compression system.
#
# Each time the [zip] function is called, an entry is added to the ::strings
# array mapping from an integer key to the string argument to zip. The key
# is returned. Later on, when the key is passed to [unzip], the original
# string is retrieved from the ::strings array and returned.
#
set next_x 0
proc zip {x} {
incr ::next_x
set ::strings($::next_x) $x
return $::next_x
}
proc unzip {x} {
return $::strings($x)
}
foreach {tn zip unzip} {
1 zip unzip
2 {z.i.p!!} {un "zip"}
} {
set next_x 0
catch {db close}
forcedelete test.db
sqlite3 db test.db
db func $zip zip
db func $unzip unzip
# Create a table that uses zip/unzip. Check that content inserted into
# the table can be read back (using a full-scan query). Check that the
# underlying %_content table contains the compressed (integer) values.
#
do_execsql_test 1.$tn.0 "
CREATE VIRTUAL TABLE t1 USING fts4(
a, b,
compress='$zip', uncompress='$unzip'
);
"
do_execsql_test 1.$tn.1 {
INSERT INTO t1 VALUES('one two three', 'two four six');
SELECT a, b FROM t1;
} {{one two three} {two four six}}
do_execsql_test 1.$tn.2 {
SELECT c0a, c1b FROM t1_content;
} {1 2}
# Insert another row and check that it can be read back. Also that the
# %_content table still contains all compressed content. This time, try
# full-text index and by-docid queries too.
#
do_execsql_test 1.$tn.3 {
INSERT INTO t1 VALUES('three six nine', 'four eight twelve');
SELECT a, b FROM t1;
} {{one two three} {two four six} {three six nine} {four eight twelve}}
do_execsql_test 1.$tn.4 {
SELECT c0a, c1b FROM t1_content;
} {1 2 3 4}
do_execsql_test 1.$tn.5 {
SELECT a, b FROM t1 WHERE docid = 2
} {{three six nine} {four eight twelve}}
do_execsql_test 1.$tn.6 {
SELECT a, b FROM t1 WHERE t1 MATCH 'two'
} {{one two three} {two four six}}
# Delete a row and check that the full-text index is correctly updated.
# Inspect the full-text index using an fts4aux table.
#
do_execsql_test 1.$tn.7 {
CREATE VIRTUAL TABLE terms USING fts4aux(t1);
SELECT term, documents, occurrences FROM terms WHERE col = '*';
} {
eight 1 1 four 2 2 nine 1 1 one 1 1
six 2 2 three 2 2 twelve 1 1 two 1 2
}
do_execsql_test 1.$tn.8 {
DELETE FROM t1 WHERE docid = 1;
SELECT term, documents, occurrences FROM terms WHERE col = '*';
} {
eight 1 1 four 1 1 nine 1 1
six 1 1 three 1 1 twelve 1 1
}
do_execsql_test 1.$tn.9 { SELECT c0a, c1b FROM t1_content } {3 4}
}
# Test that is an error to specify just one of compress and uncompress.
#
do_catchsql_test 2.1 {
CREATE VIRTUAL TABLE t2 USING fts4(x, compress=zip)
} {1 {missing uncompress parameter in fts4 constructor}}
do_catchsql_test 2.2 {
CREATE VIRTUAL TABLE t2 USING fts4(x, uncompress=unzip)
} {1 {missing compress parameter in fts4 constructor}}
finish_test
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