Start file Assert.h

CMakeLists.txt

@@ -66,6 +66,9 @@ include(CheckCompiler)
 if(ZERO_TOLERANCE)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror -Wfatal-errors")
 endif()
+if(BORNAGAIN_GUI)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DQT_MESSAGELOGCONTEXT=ON")
+endif()
 include(BornAgainConfiguration)
 include(BornAgainPolicy)
 include(GeneratePythonDocs)

Core/Basics/Assert.h

+// ************************************************************************** //
+//
+//  BornAgain: simulate and fit scattering at grazing incidence
+//
+//! @file      Core/Basics/Assert.h
+//! @brief     Defines the macro ASSERT.
+//!
+//! @homepage  http://www.bornagainproject.org
+//! @license   GNU General Public License v3 or higher (see COPYING)
+//! @copyright Forschungszentrum Jülich GmbH 2018
+//! @authors   Scientific Computing Group at MLZ (see CITATION, AUTHORS)
+//
+// ************************************************************************** //
+
+#ifndef BORNAGAIN_CORE_BASICS_ASSERT_H
+#define BORNAGAIN_CORE_BASICS_ASSERT_H
+
+#ifdef BORNAGAIN_GUI
+
+#include <QtGlobal>
+#define ASSERT(condition) \
+    if (!(condition)) \
+        qFatal("assertion failed");
+
+#else // The non-GUI case is used by our test suite
+
+#include <iostream>
+#define ASSERT(condition) \
+    if (!(condition)) { \
+        std::cerr << "assertion failed" << std::endl; \
+        exit(1); \
+    }
+
+#endif // BORNAGAIN_GUI
+
+#endif // BORNAGAIN_CORE_BASICS_ASSERT_H

Tests/UnitTests/Core/Basics/TestAssert.cpp

+#include "Core/Basics/Assert.h"
+#include "Tests/GTestWrapper/google_test.h"
+
+class TestAssert : public ::testing::Test
+{
+};
+
+TEST_F(TestAssert, Assert)
+{
+    EXPECT_NO_THROW(ASSERT(1));
+    EXPECT_EXIT(ASSERT(0), ::testing::ExitedWithCode(1), "assertion failed");
+}