The Tor Browser / file comparison
comparison: storage/test/unit/test_cache_size.js
storage/test/unit/test_cache_size.js
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:2e63d10f4473 |
|---|---|
| 1 /* Any copyright is dedicated to the Public Domain. | |
| 2 http://creativecommons.org/publicdomain/zero/1.0/ */ | |
| 3 | |
| 4 // This file tests that dbs of various page sizes are using the right cache | |
| 5 // size (bug 703113). | |
| 6 | |
| 7 /** | |
| 8 * In order to change the cache size, we must open a DB, change the page | |
| 9 * size, create a table, close the DB, then re-open the DB. We then check | |
| 10 * the cache size after reopening. | |
| 11 * | |
| 12 * @param dbOpener | |
| 13 * function that opens the DB specified in file | |
| 14 * @param file | |
| 15 * file holding the database | |
| 16 * @param pageSize | |
| 17 * the DB's page size | |
| 18 * @param expectedCacheSize | |
| 19 * the expected cache size for the given page size | |
| 20 */ | |
| 21 function check_size(dbOpener, file, pageSize, expectedCacheSize) | |
| 22 { | |
| 23 // Open the DB, immediately change its page size. | |
| 24 let db = dbOpener(file); | |
| 25 db.executeSimpleSQL("PRAGMA page_size = " + pageSize); | |
| 26 | |
| 27 // Check the page size change worked. | |
| 28 let stmt = db.createStatement("PRAGMA page_size"); | |
| 29 do_check_true(stmt.executeStep()); | |
| 30 do_check_eq(stmt.row.page_size, pageSize); | |
| 31 stmt.finalize(); | |
| 32 | |
| 33 // Create a simple table. | |
| 34 db.executeSimpleSQL("CREATE TABLE test ( id INTEGER PRIMARY KEY )"); | |
| 35 | |
| 36 // Close and re-open the DB. | |
| 37 db.close(); | |
| 38 db = dbOpener(file); | |
| 39 | |
| 40 // Check cache size is as expected. | |
| 41 let stmt = db.createStatement("PRAGMA cache_size"); | |
| 42 do_check_true(stmt.executeStep()); | |
| 43 do_check_eq(stmt.row.cache_size, expectedCacheSize); | |
| 44 stmt.finalize(); | |
| 45 } | |
| 46 | |
| 47 function new_file(name) | |
| 48 { | |
| 49 let file = dirSvc.get("ProfD", Ci.nsIFile); | |
| 50 file.append(name + ".sqlite"); | |
| 51 do_check_false(file.exists()); | |
| 52 return file; | |
| 53 } | |
| 54 | |
| 55 function run_test() | |
| 56 { | |
| 57 const kExpectedCacheSize = -2048; // 2MiB | |
| 58 | |
| 59 let pageSizes = [ | |
| 60 1024, | |
| 61 4096, | |
| 62 32768, | |
| 63 ]; | |
| 64 | |
| 65 for (let i = 0; i < pageSizes.length; i++) { | |
| 66 let pageSize = pageSizes[i]; | |
| 67 check_size(getDatabase, | |
| 68 new_file("shared" + pageSize), pageSize, kExpectedCacheSize); | |
| 69 check_size(getService().openUnsharedDatabase, | |
| 70 new_file("unshared" + pageSize), pageSize, kExpectedCacheSize); | |
| 71 } | |
| 72 } |
