diff options
Diffstat (limited to 'test/func.test')
-rw-r--r-- | test/func.test | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/test/func.test b/test/func.test index eef0543..ba1ea02 100644 --- a/test/func.test +++ b/test/func.test @@ -1247,4 +1247,48 @@ do_test func-28.1 { } } {1 {unknown function: nosuchfunc()}} +# Verify that the length() and typeof() functions do not actually load +# the content of their argument. +# +do_test func-29.1 { + db eval { + CREATE TABLE t29(id INTEGER PRIMARY KEY, x, y); + INSERT INTO t29 VALUES(1, 2, 3), (2, NULL, 4), (3, 4.5, 5); + INSERT INTO t29 VALUES(4, randomblob(1000000), 6); + INSERT INTO t29 VALUES(5, "hello", 7); + } + db close + sqlite3 db test.db + sqlite3_db_status db CACHE_MISS 1 + db eval {SELECT typeof(x), length(x), typeof(y) FROM t29 ORDER BY id} +} {integer 1 integer null {} integer real 3 integer blob 1000000 integer text 5 integer} +do_test func-29.2 { + set x [lindex [sqlite3_db_status db CACHE_MISS 1] 1] + if {$x<5} {set x 1} + set x +} {1} +do_test func-29.3 { + db close + sqlite3 db test.db + sqlite3_db_status db CACHE_MISS 1 + db eval {SELECT typeof(+x) FROM t29 ORDER BY id} +} {integer null real blob text} +do_test func-29.4 { + set x [lindex [sqlite3_db_status db CACHE_MISS 1] 1] + if {$x>100} {set x many} + set x +} {many} +do_test func-29.5 { + db close + sqlite3 db test.db + sqlite3_db_status db CACHE_MISS 1 + db eval {SELECT sum(length(x)) FROM t29} +} {1000009} +do_test func-29.6 { + set x [lindex [sqlite3_db_status db CACHE_MISS 1] 1] + if {$x<5} {set x 1} + set x +} {1} + + finish_test |