The Tor Browser / file comparison
comparison: storage/test/unit/test_chunk_growth.js
storage/test/unit/test_chunk_growth.js
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:56bb4f32f147 |
|---|---|
| 1 /* Any copyright is dedicated to the Public Domain. | |
| 2 * http://creativecommons.org/publicdomain/zero/1.0/ | |
| 3 */ | |
| 4 | |
| 5 // This file tests SQLITE_FCNTL_CHUNK_SIZE behaves as expected | |
| 6 | |
| 7 function run_sql(d, sql) { | |
| 8 var stmt = d.createStatement(sql) | |
| 9 stmt.execute() | |
| 10 stmt.finalize(); | |
| 11 } | |
| 12 | |
| 13 function new_file(name) | |
| 14 { | |
| 15 var file = dirSvc.get("ProfD", Ci.nsIFile); | |
| 16 file.append(name); | |
| 17 return file; | |
| 18 } | |
| 19 | |
| 20 function get_size(name) { | |
| 21 return new_file(name).fileSize | |
| 22 } | |
| 23 | |
| 24 function run_test() | |
| 25 { | |
| 26 const filename = "chunked.sqlite"; | |
| 27 const CHUNK_SIZE = 512 * 1024; | |
| 28 var d = getDatabase(new_file(filename)); | |
| 29 try { | |
| 30 d.setGrowthIncrement(CHUNK_SIZE, ""); | |
| 31 } catch (e if e.result == Cr.NS_ERROR_FILE_TOO_BIG) { | |
| 32 print("Too little free space to set CHUNK_SIZE!"); | |
| 33 return; | |
| 34 } | |
| 35 run_sql(d, "CREATE TABLE bloat(data varchar)"); | |
| 36 | |
| 37 var orig_size = get_size(filename); | |
| 38 /* Dump in at least 32K worth of data. | |
| 39 * While writing ensure that the file size growth in chunksize set above. | |
| 40 */ | |
| 41 const str1024 = new Array(1024).join("T"); | |
| 42 for(var i = 0; i < 32; i++) { | |
| 43 run_sql(d, "INSERT INTO bloat VALUES('" + str1024 + "')"); | |
| 44 var size = get_size(filename) | |
| 45 // Must not grow in small increments. | |
| 46 do_check_true(size == orig_size || size >= CHUNK_SIZE); | |
| 47 } | |
| 48 /* In addition to growing in chunk-size increments, the db | |
| 49 * should shrink in chunk-size increments too. | |
| 50 */ | |
| 51 run_sql(d, "DELETE FROM bloat") | |
| 52 run_sql(d, "VACUUM") | |
| 53 do_check_true(get_size(filename) >= CHUNK_SIZE) | |
| 54 } | |
| 55 |
