From cec7cd3654ba0c7fc28b1c869cf8b8484c27bc6a Mon Sep 17 00:00:00 2001
From: Guillaume Smet <guillaume.smet@gmail.com>
Date: Thu, 19 Jan 2023 17:30:13 +0100
Subject: [PATCH] Avoid adding the exception itself as a suppressed exception

As experienced in #30463, it seems it can happen.
---
 .../java/io/quarkus/test/junit/QuarkusTestExtension.java | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/test-framework/junit5/src/main/java/io/quarkus/test/junit/QuarkusTestExtension.java b/test-framework/junit5/src/main/java/io/quarkus/test/junit/QuarkusTestExtension.java
index fd9153d2010fc..e64a8ace36a76 100644
--- a/test-framework/junit5/src/main/java/io/quarkus/test/junit/QuarkusTestExtension.java
+++ b/test-framework/junit5/src/main/java/io/quarkus/test/junit/QuarkusTestExtension.java
@@ -816,8 +816,13 @@ public void interceptTestMethod(Invocation<Void> invocation, ReflectiveInvocatio
             runExtensionMethod(invocationContext, extensionContext, true);
             invocation.skip();
         } catch (Throwable t) {
-            for (var i : serverExceptions) {
-                t.addSuppressed(i);
+            for (var serverException : serverExceptions) {
+                if (t == serverException) {
+                    // do not add a suppressed exception to itself
+                    continue;
+                }
+
+                t.addSuppressed(serverException);
             }
             throw t;
         } finally {