From 2551994863403b2cad56ea0a1b122cb5713bf597 Mon Sep 17 00:00:00 2001
From: Piet Jarmatz <jarmatz@hsu-hh.de>
Date: Sat, 18 Nov 2023 00:59:53 +0100
Subject: [PATCH] Floating point error tolerance for testInitialisedOK

---
 test/unit/coupling/solvers/PintableLBCouetteSolverTest.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/test/unit/coupling/solvers/PintableLBCouetteSolverTest.cpp b/test/unit/coupling/solvers/PintableLBCouetteSolverTest.cpp
index 4578bf592..40a2cdbc7 100644
--- a/test/unit/coupling/solvers/PintableLBCouetteSolverTest.cpp
+++ b/test/unit/coupling/solvers/PintableLBCouetteSolverTest.cpp
@@ -1,4 +1,5 @@
 #include "coupling/solvers/LBCouetteSolver.h"
+#include <cmath>
 #include <cppunit/TestFixture.h>
 #include <cppunit/extensions/HelperMacros.h>
 #include <cstdlib>
@@ -92,15 +93,15 @@ class PintableLBCouetteSolverTest : public CppUnit::TestFixture {
   void testInitialisedOK() {
     std::unique_ptr<State> u0 = F->getState();
     double v0 = F->get_avg_vel(u0);
-    CPPUNIT_ASSERT_MESSAGE(std::to_string(v0), v0 == 0);
+    CPPUNIT_ASSERT_MESSAGE(std::to_string(v0), std::abs(v0) < 1e-9);
 
     u0 = G->getState();
     v0 = G->get_avg_vel(u0);
-    CPPUNIT_ASSERT_MESSAGE(std::to_string(v0), v0 == 0);
+    CPPUNIT_ASSERT_MESSAGE(std::to_string(v0), std::abs(v0) < 1e-9);
 
     u0 = G2->getState();
     v0 = G2->get_avg_vel(u0);
-    CPPUNIT_ASSERT_MESSAGE(std::to_string(v0), v0 == 0);
+    CPPUNIT_ASSERT_MESSAGE(std::to_string(v0), std::abs(v0) < 1e-9);
   }
 
   void testReturnToZero() {