michael@0: /* Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/publicdomain/zero/1.0/
michael@0:  */
michael@0: 
michael@0: // This file tests SQLITE_FCNTL_CHUNK_SIZE behaves as expected
michael@0: 
michael@0: function run_sql(d, sql) {
michael@0:   var stmt = d.createStatement(sql)
michael@0:   stmt.execute()
michael@0:   stmt.finalize();
michael@0: }
michael@0: 
michael@0: function new_file(name)
michael@0: {
michael@0:   var file = dirSvc.get("ProfD", Ci.nsIFile);
michael@0:   file.append(name);
michael@0:   return file;
michael@0: }
michael@0: 
michael@0: function get_size(name) {
michael@0:   return new_file(name).fileSize
michael@0: }
michael@0: 
michael@0: function run_test()
michael@0: {
michael@0:   const filename = "chunked.sqlite";
michael@0:   const CHUNK_SIZE = 512 * 1024;
michael@0:   var d = getDatabase(new_file(filename));
michael@0:   try {
michael@0:     d.setGrowthIncrement(CHUNK_SIZE, "");
michael@0:   } catch (e if e.result == Cr.NS_ERROR_FILE_TOO_BIG) {
michael@0:     print("Too little free space to set CHUNK_SIZE!");
michael@0:     return;
michael@0:   }
michael@0:   run_sql(d, "CREATE TABLE bloat(data varchar)");
michael@0: 
michael@0:   var orig_size = get_size(filename);
michael@0:   /* Dump in at least 32K worth of data.
michael@0:    * While writing ensure that the file size growth in chunksize set above.
michael@0:    */
michael@0:   const str1024 = new Array(1024).join("T");
michael@0:   for(var i = 0; i < 32; i++) {
michael@0:     run_sql(d, "INSERT INTO bloat VALUES('" + str1024 + "')");
michael@0:     var size = get_size(filename)
michael@0:     // Must not grow in small increments.
michael@0:     do_check_true(size == orig_size || size >= CHUNK_SIZE);
michael@0:   }
michael@0:   /* In addition to growing in chunk-size increments, the db
michael@0:    * should shrink in chunk-size increments too.
michael@0:    */
michael@0:   run_sql(d, "DELETE FROM bloat")
michael@0:   run_sql(d, "VACUUM")
michael@0:   do_check_true(get_size(filename) >= CHUNK_SIZE)
michael@0: }
michael@0: