gecko-dev/storage/test/unit/head_storage.js

261 строка
6.8 KiB
JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
const Ci = Components.interfaces;
const Cc = Components.classes;
const Cr = Components.results;
do_get_profile();
var dirSvc = Cc["@mozilla.org/file/directory_service;1"].
getService(Ci.nsIProperties);
function getTestDB()
{
var db = dirSvc.get("ProfD", Ci.nsIFile);
db.append("test_storage.sqlite");
return db;
}
/**
* Obtains a corrupt database to test against.
*/
function getCorruptDB()
{
return do_get_file("corruptDB.sqlite");
}
/**
* Obtains a fake (non-SQLite format) database to test against.
*/
function getFakeDB()
{
return do_get_file("fakeDB.sqlite");
}
function cleanup()
{
// close the connection
print("*** Storage Tests: Trying to close!");
getOpenedDatabase().close();
// we need to null out the database variable to get a new connection the next
// time getOpenedDatabase is called
gDBConn = null;
// removing test db
print("*** Storage Tests: Trying to remove file!");
var dbFile = getTestDB();
if (dbFile.exists())
try { dbFile.remove(false); } catch(e) { /* stupid windows box */ }
}
/**
* Use asyncClose to cleanup a connection. Synchronous by means of internally
* spinning an event loop.
*/
function asyncCleanup()
{
let closed = false;
// close the connection
print("*** Storage Tests: Trying to asyncClose!");
getOpenedDatabase().asyncClose(function() { closed = true; });
let curThread = Components.classes["@mozilla.org/thread-manager;1"]
.getService().currentThread;
while (!closed)
curThread.processNextEvent(true);
// we need to null out the database variable to get a new connection the next
// time getOpenedDatabase is called
gDBConn = null;
// removing test db
print("*** Storage Tests: Trying to remove file!");
var dbFile = getTestDB();
if (dbFile.exists())
try { dbFile.remove(false); } catch(e) { /* stupid windows box */ }
}
function getService()
{
return Cc["@mozilla.org/storage/service;1"].getService(Ci.mozIStorageService);
}
var gDBConn = null;
/**
* Get a connection to the test database. Creates and caches the connection
* if necessary, otherwise reuses the existing cached connection. This
* connection shares its cache.
*
* @returns the mozIStorageConnection for the file.
*/
function getOpenedDatabase()
{
if (!gDBConn) {
gDBConn = getService().openDatabase(getTestDB());
}
return gDBConn;
}
/**
* Get a connection to the test database. Creates and caches the connection
* if necessary, otherwise reuses the existing cached connection. This
* connection doesn't share its cache.
*
* @returns the mozIStorageConnection for the file.
*/
function getOpenedUnsharedDatabase()
{
if (!gDBConn) {
gDBConn = getService().openUnsharedDatabase(getTestDB());
}
return gDBConn;
}
/**
* Obtains a specific database to use.
*
* @param aFile
* The nsIFile representing the db file to open.
* @returns the mozIStorageConnection for the file.
*/
function getDatabase(aFile)
{
return getService().openDatabase(aFile);
}
function createStatement(aSQL)
{
return getOpenedDatabase().createStatement(aSQL);
}
/**
* Creates an asynchronous SQL statement.
*
* @param aSQL
* The SQL to parse into a statement.
* @returns a mozIStorageAsyncStatement from aSQL.
*/
function createAsyncStatement(aSQL)
{
return getOpenedDatabase().createAsyncStatement(aSQL);
}
/**
* Invoke the given function and assert that it throws an exception expressing
* the provided error code in its 'result' attribute. JS function expressions
* can be used to do this concisely.
*
* Example:
* expectError(Cr.NS_ERROR_INVALID_ARG, function() explodingFunction());
*
* @param aErrorCode
* The error code to expect from invocation of aFunction.
* @param aFunction
* The function to invoke and expect an XPCOM-style error from.
*/
function expectError(aErrorCode, aFunction)
{
let exceptionCaught = false;
try {
aFunction();
}
catch(e) {
if (e.result != aErrorCode) {
do_throw("Got an exception, but the result code was not the expected " +
"one. Expected " + aErrorCode + ", got " + e.result);
}
exceptionCaught = true;
}
if (!exceptionCaught)
do_throw(aFunction + " should have thrown an exception but did not!");
}
/**
* Run a query synchronously and verify that we get back the expected results.
*
* @param aSQLString
* The SQL string for the query.
* @param aBind
* The value to bind at index 0.
* @param aResults
* A list of the expected values returned in the sole result row.
* Express blobs as lists.
*/
function verifyQuery(aSQLString, aBind, aResults)
{
let stmt = getOpenedDatabase().createStatement(aSQLString);
stmt.bindByIndex(0, aBind);
try {
do_check_true(stmt.executeStep());
let nCols = stmt.numEntries;
if (aResults.length != nCols)
do_throw("Expected " + aResults.length + " columns in result but " +
"there are only " + aResults.length + "!");
for (let iCol = 0; iCol < nCols; iCol++) {
let expectedVal = aResults[iCol];
let valType = stmt.getTypeOfIndex(iCol);
if (expectedVal === null) {
do_check_eq(stmt.VALUE_TYPE_NULL, valType);
do_check_true(stmt.getIsNull(iCol));
}
else if (typeof(expectedVal) == "number") {
if (Math.floor(expectedVal) == expectedVal) {
do_check_eq(stmt.VALUE_TYPE_INTEGER, valType);
do_check_eq(expectedVal, stmt.getInt32(iCol));
}
else {
do_check_eq(stmt.VALUE_TYPE_FLOAT, valType);
do_check_eq(expectedVal, stmt.getDouble(iCol));
}
}
else if (typeof(expectedVal) == "string") {
do_check_eq(stmt.VALUE_TYPE_TEXT, valType);
do_check_eq(expectedVal, stmt.getUTF8String(iCol));
}
else { // blob
do_check_eq(stmt.VALUE_TYPE_BLOB, valType);
let count = { value: 0 }, blob = { value: null };
stmt.getBlob(iCol, count, blob);
do_check_eq(count.value, expectedVal.length);
for (let i = 0; i < count.value; i++) {
do_check_eq(expectedVal[i], blob.value[i]);
}
}
}
}
finally {
stmt.finalize();
}
}
/**
* Return the number of rows in the able with the given name using a synchronous
* query.
*
* @param aTableName
* The name of the table.
* @return The number of rows.
*/
function getTableRowCount(aTableName)
{
var currentRows = 0;
var countStmt = getOpenedDatabase().createStatement(
"SELECT COUNT(1) AS count FROM " + aTableName
);
try {
do_check_true(countStmt.executeStep());
currentRows = countStmt.row.count;
}
finally {
countStmt.finalize();
}
return currentRows;
}
cleanup();