Add Gate::after test

tests/GateTest.php

@@ -19,12 +19,29 @@ public function it_allows_other_gate_before_callbacks_to_run_if_a_user_does_not_
         $this->assertFalse($this->testUser->can('edit-articles'));
 
         app(Gate::class)->before(function () {
+            // this Gate-before intercept overrides everything to true ... like a typical Super-Admin might use
             return true;
         });
 
         $this->assertTrue($this->testUser->can('edit-articles'));
     }
 
+    /** @test */
+    public function it_allows_gate_after_callback_to_deny_granted_privileges()
+    {
+        $this->assertFalse($this->testUser->can('edit-articles'));
+
+        $this->testUser->givePermissionTo($this->testUserPermission);
+        $this->assertTrue($this->testUser->can('edit-articles'));
+
+        app(Gate::class)->after(function () {
+            // always deny
+            return false;
+        });
+
+        $this->assertFalse($this->testUser->can('edit-articles'));
+    }
+
     /** @test */
     public function it_can_determine_if_a_user_has_a_direct_permission()
     {