LibTest: Move Crash testing facility from crash.cpp to LibTest

Userland/Libraries/LibTest/CrashTest.h

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2019-2020, Shannon Booth <shannon.ml.booth@gmail.com>
+ * Copyright (c) 2021, Brian Gianforaro <bgianf@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Function.h>
+#include <AK/String.h>
+
+namespace Test {
+
+class Crash {
+public:
+    enum class RunType {
+        UsingChildProcess,
+        UsingCurrentProcess,
+    };
+
+    enum class Failure {
+        DidNotCrash,
+        UnexpectedError,
+    };
+
+    Crash(String test_type, Function<Crash::Failure()> crash_function);
+
+    void run(RunType run_type);
+
+private:
+    String m_type;
+    Function<Crash::Failure()> m_crash_function;
+};
+
+}