[1.x] feat: TableKey takes into account the class name (#29)

Take fixture name into account for table key hash

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Co-authored-by: german.krutov <[email protected]>
Co-authored-by: Marc Würth <[email protected]>

src/TestSuite/Fixture/ChecksumTestFixture.php

@@ -121,10 +121,15 @@ protected function _hash(ConnectionInterface $db)
 /**
  * Get the key for table hashes
  *
- * @return string key for specify connection and table
+ * The key contains:
+ * - The table name
+ * - The connection name to prevent collisions across connections
+ * - The fixture class name to prevent collisions when loading multiple fixtures for the same table throughout a test run
+ *
+ * @return string key based on connection, table and fixture's class
  */
-    protected function _getTableKey ()
+    protected function _getTableKey()
     {
-        return $this->connection() . '-' . $this->table;
+        return $this->connection() . '-' . $this->table . '-' . static::class;
     }
 }