diff --git a/CMakeScripts/UnitTest.cmake b/CMakeScripts/UnitTest.cmake
index e2968e69edabf178815471a820c19220c5f062b1..1fdaf12e73e86dfe629640b6bd60ac16ff738edc 100644
--- a/CMakeScripts/UnitTest.cmake
+++ b/CMakeScripts/UnitTest.cmake
@@ -22,6 +22,11 @@ function(add_unit_test test_name)
 
     add_executable(${test_name} src/${test_name}.cpp ${test_sources})
     target_include_directories(${test_name} SYSTEM PRIVATE ${GTEST_INCLUDE_DIRS})
+
+    target_compile_definitions(${test_name} PRIVATE "-D_GLIBCXX_ASSERTIONS")
+    target_compile_options(${test_name} PRIVATE "-fsanitize=address" "-fno-omit-frame-pointer" "-UNDEBUG")
+    target_link_options(${test_name} PRIVATE "-fsanitize=address")
+
     target_link_libraries(${test_name} GTest::gtest GTest::gmock GTest::gmock_main ${ARG_EXTRA_LIBS})
     add_test(NAME ${test_name} COMMAND ${test_name})
     add_dependencies(unit_tests ${test_name} ${ARG_EXTRA_LIBS})
diff --git a/testfiles/CMakeLists.txt b/testfiles/CMakeLists.txt
index 5e50cd251aa52697b1f2d0af9a972c7cb07137bb..e49cd339751c4e71a25b63b2eb6477ec55b653c6 100644
--- a/testfiles/CMakeLists.txt
+++ b/testfiles/CMakeLists.txt
@@ -157,6 +157,7 @@ endforeach()
 include(${CMAKE_SOURCE_DIR}/CMakeScripts/UnitTest.cmake)
 
 ### Unit tests
+add_unit_test(assertions-in-tests)
 add_unit_test(version-test SOURCES version.cpp)
 add_unit_test(css-syntactic-decomposition-test SOURCES "css/syntactic-decomposition.cpp" EXTRA_LIBS croco_LIB)
 add_dependencies(tests unit_tests)
diff --git a/testfiles/src/assertions-in-tests.cpp b/testfiles/src/assertions-in-tests.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..7df0e2f0e5e9c42629feec3ad29b1abce2b422c6
--- /dev/null
+++ b/testfiles/src/assertions-in-tests.cpp
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/**
+ * Authors:
+ *   Rafał Siejakowski <rs@rs-math.net>
+ *
+ * @copyright
+ * Copyright (C) 2025 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <gtest/gtest.h>
+
+namespace {
+void failing_assertion_function() {
+    assert(false);
+}
+}
+
+/// Ensure that a failed assertion crashes a test
+TEST(TechicalTestSuiteTest, AssertionsArmedInTests) {
+    EXPECT_DEATH(failing_assertion_function(), ".*");
+}
\ No newline at end of file