From 617fc277b9158e04923b69385d48d7a32c72d347 Mon Sep 17 00:00:00 2001
From: Bertrand Coconnier <bcoconni@users.sourceforge.net>
Date: Sat, 18 Jun 2022 11:26:49 +0200
Subject: [PATCH] Add a regression for issue #654

---
 tests/CMakeLists.txt        |  3 ++-
 tests/TestLighterThanAir.py | 43 +++++++++++++++++++++++++++++++++++++
 2 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 tests/TestLighterThanAir.py

diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 0f62ec7eb..95a201d5d 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -48,7 +48,8 @@ set(PYTHON_TESTS ResetOutputFiles
                  TestMagnetometer
                  TestLinearization
                  TestLinearActuator
-                 TestPlanet)
+                 TestPlanet
+                 TestLighterThanAir)
 
 foreach(test ${PYTHON_TESTS})
   add_test(NAME ${test}
diff --git a/tests/TestLighterThanAir.py b/tests/TestLighterThanAir.py
new file mode 100644
index 000000000..a9d433a2b
--- /dev/null
+++ b/tests/TestLighterThanAir.py
@@ -0,0 +1,43 @@
+# TestLighterThanAir.py
+#
+# Tests that check that lighter than air vehicles (balloons, blimps, etc.) are
+# working as expected.
+#
+# Copyright (c) 2022 Bertrand Coconnier
+#
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, see <http://www.gnu.org/licenses/>
+#
+from JSBSim_utils import JSBSimTestCase, RunTest, ExecuteUntil
+
+import fpectl
+
+
+class TestLighterThanAir(JSBSimTestCase):
+    def testValve(self):
+        fpectl.turnon_sigfpe()
+
+        fdm = self.create_fdm()
+        fdm.load_script(
+            self.sandbox.path_to_jsbsim_file("scripts", "weather-balloon.xml")
+        )
+
+        fdm.run_ic()
+        fdm["buoyant_forces/gas-cell/burst"] = 1.0
+
+        ExecuteUntil(fdm, 10.0)
+
+        fpectl.turnoff_sigfpe()
+
+
+RunTest(TestLighterThanAir)