From ef62e2824504f5b219379c224c43a5e8d119d270 Mon Sep 17 00:00:00 2001
From: Beau Simensen <beau@dflydev.com>
Date: Wed, 23 Aug 2023 15:59:04 -0500
Subject: [PATCH] Fail if expected exception was not thrown

---
 src/Testing/GivenWhenThen/Scenario.php | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/Testing/GivenWhenThen/Scenario.php b/src/Testing/GivenWhenThen/Scenario.php
index a8e5746..5f0081a 100644
--- a/src/Testing/GivenWhenThen/Scenario.php
+++ b/src/Testing/GivenWhenThen/Scenario.php
@@ -170,6 +170,8 @@ public function assert(): self
             $handler = [$handler, 'handle'];
         }
 
+        $caughtException = false;
+
         try {
             ($handler)($instance->when->command);
         } catch (\Throwable $throwable) {
@@ -179,6 +181,8 @@ public function assert(): self
                 } else {
                     Assert::assertEquals($instance->expect, $throwable);
                 }
+
+                $caughtException = true;
             } else {
                 throw $throwable;
             }
@@ -186,6 +190,10 @@ public function assert(): self
 
         $recordedEvents = $messageRepository->lastCommit();
 
+        if (isset($instance->expect) && !$caughtException) {
+            Assert::fail('Expected exception not thrown.');
+        }
+
         if (!isset($instance->outcome)) {
             Assert::fail('Expected an outcome.');
         }