avoid large amounts of notifications being added to the session (#17736)

* impose limit on notification message size when logging to notifications

* if in memory notification count exceeds max notification size in session, do not attempt to new ones it to the session

* Detect when session was too large to read and provide warning to user.

* add some tests for Notification\ManagerTest.php

* add tests for relevant DbTable members

* Change session data column type to allow larger session data values.

* update to rc3

* trigger new build?

* fix namespace

* fix test namespaces

* bump version correctly

1 files changed, 37 insertions, 0 deletions

diff --git a/tests/PHPUnit/Integration/Session/SaveHandler/DbTableTest.php b/tests/PHPUnit/Integration/Session/SaveHandler/DbTableTest.php
new file mode 100644
index 0000000000..e71af20a32
--- /dev/null
+++ b/tests/PHPUnit/Integration/Session/SaveHandler/DbTableTest.php
@@ -0,0 +1,37 @@
+<?php
+/**
+ * Matomo - free/libre analytics platform
+ *
+ * @link https://matomo.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+
+namespace Piwik\Tests\Integration\Session\SaveHandler;
+
+use Piwik\Session;
+use Piwik\Session\SaveHandler\DbTable;
+use Piwik\Tests\Framework\TestCase\IntegrationTestCase;
+
+class DbTableTest extends IntegrationTestCase
+{
+    /**
+     * @var DbTable
+     */
+    private $testInstance;
+
+    public function setUp(): void
+    {
+        parent::setUp();
+        $this->testInstance = new DbTable(Session::getDbTableConfig());
+    }
+
+    public function test_read_returnsTheSessionDataCorrectly()
+    {
+        $this->testInstance->write('testid', 'testdata');
+
+        $result = $this->testInstance->read('testid');
+
+        $this->assertEquals('testdata', $result);
+    }
+}
\ No newline at end of file