From 462daf3300836155fdb16349f2b9523a7070f32c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Elena=20Pe=C3=B1a=20Tapia?=
 <57907331+ElePT@users.noreply.github.com>
Date: Fri, 23 Aug 2024 13:04:35 +0200
Subject: [PATCH] Filter aer warnings in deprecated `FakeBackend` V1 class
 (#13018)

* Filter aer warnings in fake backend for the deprecated V1 path

* Filter warnings in QiskitTestCase instead of catching them

(cherry picked from commit 6b6efc7d547e5baef7d906c850e2bc69ed6430fb)
---
 test/utils/base.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/test/utils/base.py b/test/utils/base.py
index e1b2180aac4e..0038f7772ebf 100644
--- a/test/utils/base.py
+++ b/test/utils/base.py
@@ -156,6 +156,14 @@ def setUpClass(cls):
             module="qiskit_aer",
         )
 
+        # Safe to remove once `FakeBackend` is removed (2.0)
+        warnings.filterwarnings(
+            "ignore",  # If "default", it floods the CI output
+            category=DeprecationWarning,
+            message=r".*from_backend using V1 based backend is deprecated as of Aer 0.15*",
+            module="qiskit.providers.fake_provider.fake_backend",
+        )
+
         allow_DeprecationWarning_message = [
             r"The property ``qiskit\.circuit\.bit\.Bit\.(register|index)`` is deprecated.*",
         ]