[Validator] Fix incorrect assertion in WhenTest

Author: alexandre-daubois

Tests/Constraints/WhenTest.php

@@ -89,7 +89,7 @@ public function testAnnotations()
 
         [$barConstraint] = $metadata->properties['bar']->getConstraints();
 
-        self::assertInstanceOf(When::class, $fooConstraint);
+        self::assertInstanceOf(When::class, $barConstraint);
         self::assertSame('false', $barConstraint->expression);
         self::assertEquals([
             new NotNull([
@@ -161,7 +161,7 @@ public function testAttributes()
 
         [$barConstraint] = $metadata->properties['bar']->getConstraints();
 
-        self::assertInstanceOf(When::class, $fooConstraint);
+        self::assertInstanceOf(When::class, $barConstraint);
         self::assertSame('false', $barConstraint->expression);
         self::assertEquals([
             new NotNull([