1 files changed, 56 insertions, 0 deletions
diff --git a/tests/unit/libmain/crash.cc b/tests/unit/libmain/crash.cc
new file mode 100644
index 000000000..883dc39bd
--- /dev/null
+++ b/tests/unit/libmain/crash.cc
@@ -0,0 +1,56 @@
+#include <gtest/gtest.h>
+#include "crash-handler.hh"
+
+namespace nix {
+
+class OopsException : public std::exception
+{
+    const char * msg;
+
+public:
+    OopsException(const char * msg) : msg(msg) {}
+    const char * what() const noexcept override
+    {
+        return msg;
+    }
+};
+
+void causeCrashForTesting(std::function<void()> fixture)
+{
+    registerCrashHandler();
+    std::cerr << "time to crash\n";
+    try {
+        fixture();
+    } catch (...) {
+        std::terminate();
+    }
+}
+
+TEST(CrashHandler, exceptionName)
+{
+    ASSERT_DEATH(
+        causeCrashForTesting([]() { throw OopsException{"lol oops"}; }),
+        "time to crash\nLix crashed.*OopsException: lol oops"
+    );
+}
+
+TEST(CrashHandler, unknownTerminate)
+{
+    ASSERT_DEATH(
+        causeCrashForTesting([]() { std::terminate(); }),
+        "time to crash\nLix crashed.*std::terminate\\(\\) called without exception"
+    );
+}
+
+TEST(CrashHandler, nonStdException)
+{
+    ASSERT_DEATH(
+        causeCrashForTesting([]() {
+            // NOLINTNEXTLINE(hicpp-exception-baseclass): intentional
+            throw 4;
+        }),
+        "time to crash\nLix crashed.*Unknown exception! Spooky\\."
+    );
+}
+
+}