Test that bad version parameters cause TypeError On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". dbname = "intversion-bad-parameters.html" indexedDB.deleteDatabase(dbname) deleteSuccess(): Expecting TypeError exception from indexedDB.open(dbname, 'stringversion') PASS Exception was thrown. PASS indexedDB.open(dbname, 'stringversion') threw TypeError: Failed to execute 'open' on 'IDBFactory': Value is not of type 'unsigned long long'. Expecting TypeError exception from indexedDB.open(dbname, 0) PASS Exception was thrown. PASS indexedDB.open(dbname, 0) threw TypeError: Failed to execute 'open' on 'IDBFactory': The version provided must not be 0. Expecting TypeError exception from indexedDB.open(dbname, -5) PASS Exception was thrown. PASS indexedDB.open(dbname, -5) threw TypeError: Failed to execute 'open' on 'IDBFactory': Value is outside the 'unsigned long long' value range. Expecting TypeError exception from indexedDB.open(dbname, Infinity) PASS Exception was thrown. PASS indexedDB.open(dbname, Infinity) threw TypeError: Failed to execute 'open' on 'IDBFactory': Value is infinite and not of type 'unsigned long long'. Expecting TypeError exception from indexedDB.open(dbname, -Infinity) PASS Exception was thrown. PASS indexedDB.open(dbname, -Infinity) threw TypeError: Failed to execute 'open' on 'IDBFactory': Value is infinite and not of type 'unsigned long long'. Expecting TypeError exception from indexedDB.open(dbname, NaN) PASS Exception was thrown. PASS indexedDB.open(dbname, NaN) threw TypeError: Failed to execute 'open' on 'IDBFactory': Value is not of type 'unsigned long long'. Expecting TypeError exception from indexedDB.open(dbname, -1) PASS Exception was thrown. PASS indexedDB.open(dbname, -1) threw TypeError: Failed to execute 'open' on 'IDBFactory': Value is outside the 'unsigned long long' value range. Expecting TypeError exception from indexedDB.open(dbname, 0x20000000000000) PASS Exception was thrown. PASS indexedDB.open(dbname, 0x20000000000000) threw TypeError: Failed to execute 'open' on 'IDBFactory': Value is outside the 'unsigned long long' value range. Expecting TypeError exception from indexedDB.open(dbname, null) PASS Exception was thrown. PASS indexedDB.open(dbname, null) threw TypeError: Failed to execute 'open' on 'IDBFactory': The version provided must not be 0. PASS indexedDB.open(dbname, undefined) did not throw exception. PASS successfullyParsed is true TEST COMPLETE