bug #31584 [Workflow] Do not trigger extra guards (lyrixx)

This PR was merged into the 3.4 branch.

Discussion
----------

[Workflow] Do not trigger extra guards

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #31582
| License       | MIT
| Doc PR        |

---

With this patch, guards are executed only on wanted transitions

**Note for merger**: This is already fixed (in a different manner) in 4.2, So this patch should not be included in 4.2, instead take: #31585 or discard changes of Workflow class but keep tests

Commits
-------

ad06197 [Workflow] Do not trigger extra guard

src/Symfony/Component/Workflow/Tests/WorkflowTest.php

@@ -304,6 +304,45 @@ public function testApplyWithEventDispatcher()
         $this->assertSame($eventNameExpected, $eventDispatcher->dispatchedEvents);
     }
 
+    public function testApplyDoesNotTriggerExtraGuardWithEventDispatcher()
+    {
+        $transitions[] = new Transition('a-b', 'a', 'b');
+        $transitions[] = new Transition('a-c', 'a', 'c');
+        $definition = new Definition(['a', 'b', 'c'], $transitions);
+
+        $subject = new \stdClass();
+        $subject->marking = null;
+        $eventDispatcher = new EventDispatcherMock();
+        $workflow = new Workflow($definition, new MultipleStateMarkingStore(), $eventDispatcher, 'workflow_name');
+
+        $eventNameExpected = [
+            'workflow.guard',
+            'workflow.workflow_name.guard',
+            'workflow.workflow_name.guard.a-b',
+            'workflow.leave',
+            'workflow.workflow_name.leave',
+            'workflow.workflow_name.leave.a',
+            'workflow.transition',
+            'workflow.workflow_name.transition',
+            'workflow.workflow_name.transition.a-b',
+            'workflow.enter',
+            'workflow.workflow_name.enter',
+            'workflow.workflow_name.enter.b',
+            'workflow.entered',
+            'workflow.workflow_name.entered',
+            'workflow.workflow_name.entered.b',
+            'workflow.completed',
+            'workflow.workflow_name.completed',
+            'workflow.workflow_name.completed.a-b',
+            'workflow.announce',
+            'workflow.workflow_name.announce',
+        ];
+
+        $marking = $workflow->apply($subject, 'a-b');
+
+        $this->assertSame($eventNameExpected, $eventDispatcher->dispatchedEvents);
+    }
+
     public function testEventName()
     {
         $definition = $this->createComplexWorkflowDefinition();

src/Symfony/Component/Workflow/Workflow.php

@@ -125,22 +125,20 @@ public function can($subject, $transitionName)
      */
     public function apply($subject, $transitionName)
     {
-        $transitions = $this->getEnabledTransitions($subject);
-
-        // We can shortcut the getMarking method in order to boost performance,
-        // since the "getEnabledTransitions" method already checks the Marking
-        // state
-        $marking = $this->markingStore->getMarking($subject);
-
-        $applied = false;
+        $marking = $this->getMarking($subject);
+        $transitions = [];
 
-        foreach ($transitions as $transition) {
-            if ($transitionName !== $transition->getName()) {
-                continue;
+        foreach ($this->definition->getTransitions() as $transition) {
+            if ($transitionName === $transition->getName() && $this->doCan($subject, $marking, $transition)) {
+                $transitions[] = $transition;
             }
+        }
 
-            $applied = true;
+        if (!$transitions) {
+            throw new LogicException(sprintf('Unable to apply transition "%s" for workflow "%s".', $transitionName, $this->name));
+        }
 
+        foreach ($transitions as $transition) {
             $this->leave($subject, $transition, $marking);
 
             $this->transition($subject, $transition, $marking);
@@ -156,10 +154,6 @@ public function apply($subject, $transitionName)
             $this->announce($subject, $transition, $marking);
         }
 
-        if (!$applied) {
-            throw new LogicException(sprintf('Unable to apply transition "%s" for workflow "%s".', $transitionName, $this->name));
-        }
-
         return $marking;
     }