зеркало из https://github.com/mozilla/gecko-dev.git
52 строки
1.4 KiB
JavaScript
52 строки
1.4 KiB
JavaScript
// This file tests SQLITE_FCNTL_CHUNK_SIZE behaves as expected
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function run_sql(d, sql) {
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var stmt = d.createStatement(sql);
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stmt.execute();
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stmt.finalize();
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}
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function new_file(name) {
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var file = Services.dirsvc.get("ProfD", Ci.nsIFile);
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file.append(name);
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return file;
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}
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function get_size(name) {
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return new_file(name).fileSize;
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}
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function run_test() {
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const filename = "chunked.sqlite";
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const CHUNK_SIZE = 512 * 1024;
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var d = getDatabase(new_file(filename));
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try {
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d.setGrowthIncrement(CHUNK_SIZE, "");
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} catch (e) {
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if (e.result != Cr.NS_ERROR_FILE_TOO_BIG) {
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throw e;
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}
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print("Too little free space to set CHUNK_SIZE!");
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return;
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}
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run_sql(d, "CREATE TABLE bloat(data varchar)");
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var orig_size = get_size(filename);
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/* Dump in at least 32K worth of data.
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* While writing ensure that the file size growth in chunksize set above.
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*/
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const str1024 = new Array(1024).join("T");
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for (var i = 0; i < 32; i++) {
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run_sql(d, "INSERT INTO bloat VALUES('" + str1024 + "')");
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var size = get_size(filename);
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// Must not grow in small increments.
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Assert.ok(size == orig_size || size >= CHUNK_SIZE);
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}
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/* In addition to growing in chunk-size increments, the db
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* should shrink in chunk-size increments too.
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*/
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run_sql(d, "DELETE FROM bloat");
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run_sql(d, "VACUUM");
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Assert.ok(get_size(filename) >= CHUNK_SIZE);
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}
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