[Workflow] Use a strict comparison when retrieving raw markin in MarkingStore

Author: lyrixx

MarkingStore/SingleStateMarkingStore.php

@@ -44,7 +44,7 @@ public function getMarking($subject)
     {
         $placeName = $this->propertyAccessor->getValue($subject, $this->property);
 
-        if (!$placeName) {
+        if (null === $placeName) {
             return new Marking();
         }
 

Tests/MarkingStore/SingleStateMarkingStoreTest.php

@@ -30,4 +30,17 @@ public function testGetSetMarking()
 
         $this->assertEquals($marking, $marking2);
     }
+
+    public function testAlmostEmptyPlaceName()
+    {
+        $subject = new \stdClass();
+        $subject->myMarks = 0;
+
+        $markingStore = new SingleStateMarkingStore('myMarks');
+
+        $marking = $markingStore->getMarking($subject);
+
+        $this->assertInstanceOf(Marking::class, $marking);
+        $this->assertCount(1, $marking->getPlaces());
+    }
 }