xref: /sqlite-3.40.0/test/fts3comp1.test (revision 4c600ac3) 
1# 2011 January 27
2#
3# The author disclaims copyright to this source code.  In place of
4# a legal notice, here is a blessing:
5#
6#    May you do good and not evil.
7#    May you find forgiveness for yourself and forgive others.
8#    May you share freely, never taking more than you give.
9#
10#*************************************************************************
11# This file implements regression tests for SQLite library.  The
12# focus of this script is testing the FTS3 module.
13#
14
15set testdir [file dirname $argv0]
16source $testdir/tester.tcl
17ifcapable !fts3 { finish_test ; return }
18set ::testprefix fts3comp1
19
20# Create a pretend compression system.
21#
22# Each time the [zip] function is called, an entry is added to the ::strings
23# array mapping from an integer key to the string argument to zip. The key
24# is returned. Later on, when the key is passed to [unzip], the original
25# string is retrieved from the ::strings array and returned.
26#
27set next_x 0
28proc zip {x} {
29 incr ::next_x
30 set ::strings($::next_x) $x
31 return $::next_x
32}
33proc unzip {x} {
34  return $::strings($x)
35}
36
37foreach {tn zip unzip} {
38  1   zip   unzip
39  2   {z.i.p!!}    {un "zip"}
40} {
41
42  set next_x 0
43  catch {db close}
44  forcedelete test.db
45  sqlite3 db test.db
46  db func $zip zip
47  db func $unzip unzip
48
49  # Create a table that uses zip/unzip. Check that content inserted into
50  # the table can be read back (using a full-scan query). Check that the
51  # underlying %_content table contains the compressed (integer) values.
52  #
53  do_execsql_test 1.$tn.0 "
54    CREATE VIRTUAL TABLE t1 USING fts4(
55      a, b,
56      compress='$zip', uncompress='$unzip'
57    );
58  "
59  do_execsql_test 1.$tn.1 {
60    INSERT INTO t1 VALUES('one two three', 'two four six');
61    SELECT a, b FROM t1;
62  } {{one two three} {two four six}}
63  do_execsql_test 1.$tn.2 {
64    SELECT c0a, c1b FROM t1_content;
65  } {1 2}
66
67  # Insert another row and check that it can be read back. Also that the
68  # %_content table still contains all compressed content. This time, try
69  # full-text index and by-docid queries too.
70  #
71  do_execsql_test 1.$tn.3 {
72    INSERT INTO t1 VALUES('three six nine', 'four eight twelve');
73    SELECT a, b FROM t1;
74  } {{one two three} {two four six} {three six nine} {four eight twelve}}
75  do_execsql_test 1.$tn.4 {
76    SELECT c0a, c1b FROM t1_content;
77  } {1 2 3 4}
78
79  do_execsql_test 1.$tn.5 {
80    SELECT a, b FROM t1 WHERE docid = 2
81  } {{three six nine} {four eight twelve}}
82  do_execsql_test 1.$tn.6 {
83    SELECT a, b FROM t1 WHERE t1 MATCH 'two'
84  } {{one two three} {two four six}}
85
86  # Delete a row and check that the full-text index is correctly updated.
87  # Inspect the full-text index using an fts4aux table.
88  #
89  do_execsql_test 1.$tn.7 {
90    CREATE VIRTUAL TABLE terms USING fts4aux(t1);
91    SELECT term, documents, occurrences FROM terms WHERE col = '*';
92  } {
93    eight 1 1    four 2 2    nine 1 1    one 1 1
94    six 2 2      three 2 2   twelve 1 1  two 1 2
95  }
96  do_execsql_test 1.$tn.8 {
97    DELETE FROM t1 WHERE docid = 1;
98    SELECT term, documents, occurrences FROM terms WHERE col = '*';
99  } {
100    eight 1 1   four 1 1    nine 1 1
101    six 1 1     three 1 1   twelve 1 1
102  }
103  do_execsql_test 1.$tn.9 { SELECT c0a, c1b FROM t1_content } {3 4}
104}
105
106# Test that is an error to specify just one of compress and uncompress.
107#
108do_catchsql_test 2.1 {
109  CREATE VIRTUAL TABLE t2 USING fts4(x, compress=zip)
110} {1 {missing uncompress parameter in fts4 constructor}}
111do_catchsql_test 2.2 {
112  CREATE VIRTUAL TABLE t2 USING fts4(x, uncompress=unzip)
113} {1 {missing compress parameter in fts4 constructor}}
114
115finish_test
116