bug #16306 [DoctrineBridge] Fix issue which prevent the profiler to e…

…xplain a query (Baachi)

This PR was submitted for the 2.8 branch but it was merged into the 2.3 branch instead (closes #16306).

Discussion
----------

[DoctrineBridge] Fix issue which prevent the profiler to explain a query

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| License       | MIT

We currently develop a application which only use the doctrine/dbal and not the orm. And we run into a issue that the profiler can't explained any query.
This is because the `SQLLogger` will pass `null` instead of an empty array. And the `sanitizeQuery` method will currently transform this to `array(null)` which leads to an error.

I created an fork, so everyone can reproduce this.
https://github.com/Baachi/symfony-standard

Commits
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3490e98 [DoctrineBridge] Fix issue which prevent the profiler to explain a query

src/Symfony/Bridge/Doctrine/DataCollector/DoctrineDataCollector.php

@@ -117,6 +117,9 @@ private function sanitizeQueries($connectionName, $queries)
     private function sanitizeQuery($connectionName, $query)
     {
         $query['explainable'] = true;
+        if (null === $query['params']) {
+            $query['params'] = array();
+        }
         if (!is_array($query['params'])) {
             $query['params'] = array($query['params']);
         }

src/Symfony/Bridge/Doctrine/Tests/DataCollector/DoctrineDataCollectorTest.php

@@ -79,9 +79,25 @@ public function testCollectQueries($param, $types, $expected, $explainable)
         $c = $this->createCollector($queries);
         $c->collect(new Request(), new Response());
 
-        $collected_queries = $c->getQueries();
-        $this->assertEquals($expected, $collected_queries['default'][0]['params'][0]);
-        $this->assertEquals($explainable, $collected_queries['default'][0]['explainable']);
+        $collectedQueries = $c->getQueries();
+        $this->assertEquals($expected, $collectedQueries['default'][0]['params'][0]);
+        $this->assertEquals($explainable, $collectedQueries['default'][0]['explainable']);
+    }
+
+    public function testCollectQueryWithNoParams()
+    {
+        $queries = array(
+            array('sql' => 'SELECT * FROM table1', 'params' => array(), 'types' => array(), 'executionMS' => 1),
+            array('sql' => 'SELECT * FROM table1', 'params' => null, 'types' => null, 'executionMS' => 1),
+        );
+        $c = $this->createCollector($queries);
+        $c->collect(new Request(), new Response());
+
+        $collectedQueries = $c->getQueries();
+        $this->assertEquals(array(), $collectedQueries['default'][0]['params']);
+        $this->assertTrue($collectedQueries['default'][0]['explainable']);
+        $this->assertEquals(array(), $collectedQueries['default'][1]['params']);
+        $this->assertTrue($collectedQueries['default'][1]['explainable']);
     }
 
     /**
@@ -96,9 +112,9 @@ public function testSerialization($param, $types, $expected, $explainable)
         $c->collect(new Request(), new Response());
         $c = unserialize(serialize($c));
 
-        $collected_queries = $c->getQueries();
-        $this->assertEquals($expected, $collected_queries['default'][0]['params'][0]);
-        $this->assertEquals($explainable, $collected_queries['default'][0]['explainable']);
+        $collectedQueries = $c->getQueries();
+        $this->assertEquals($expected, $collectedQueries['default'][0]['params'][0]);
+        $this->assertEquals($explainable, $collectedQueries['default'][0]['explainable']);
     }
 
     public function paramProvider()