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