Initial Vexta Core v0.1.0 release

src/test/reverselock_tests.cpp

@@ -0,0 +1,95 @@
+// Copyright (c) 2009-2020 The Bitcoin Core developers
+// Copyright (c) 2014-2020 The DigiByte Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <reverselock.h>
+#include <sync.h>
+#include <test/util/setup_common.h>
+
+#include <boost/test/unit_test.hpp>
+
+#include <stdexcept>
+
+BOOST_AUTO_TEST_SUITE(reverselock_tests)
+
+BOOST_AUTO_TEST_CASE(reverselock_basics)
+{
+    Mutex mutex;
+    WAIT_LOCK(mutex, lock);
+
+    BOOST_CHECK(lock.owns_lock());
+    {
+        REVERSE_LOCK(lock);
+        BOOST_CHECK(!lock.owns_lock());
+    }
+    BOOST_CHECK(lock.owns_lock());
+}
+
+BOOST_AUTO_TEST_CASE(reverselock_multiple)
+{
+    Mutex mutex2;
+    Mutex mutex;
+    WAIT_LOCK(mutex2, lock2);
+    WAIT_LOCK(mutex, lock);
+
+    // Make sure undoing two locks succeeds
+    {
+        REVERSE_LOCK(lock);
+        BOOST_CHECK(!lock.owns_lock());
+        REVERSE_LOCK(lock2);
+        BOOST_CHECK(!lock2.owns_lock());
+    }
+    BOOST_CHECK(lock.owns_lock());
+    BOOST_CHECK(lock2.owns_lock());
+}
+
+BOOST_AUTO_TEST_CASE(reverselock_errors)
+{
+    Mutex mutex2;
+    Mutex mutex;
+    WAIT_LOCK(mutex2, lock2);
+    WAIT_LOCK(mutex, lock);
+
+#ifdef DEBUG_LOCKORDER
+    bool prev = g_debug_lockorder_abort;
+    g_debug_lockorder_abort = false;
+
+    // Make sure trying to reverse lock a previous lock fails
+    BOOST_CHECK_EXCEPTION(REVERSE_LOCK(lock2), std::logic_error, HasReason("lock2 was not most recent critical section locked"));
+    BOOST_CHECK(lock2.owns_lock());
+
+    g_debug_lockorder_abort = prev;
+#endif
+
+    // Make sure trying to reverse lock an unlocked lock fails
+    lock.unlock();
+
+    BOOST_CHECK(!lock.owns_lock());
+
+    bool failed = false;
+    try {
+        REVERSE_LOCK(lock);
+    } catch(...) {
+        failed = true;
+    }
+
+    BOOST_CHECK(failed);
+    BOOST_CHECK(!lock.owns_lock());
+
+    // Locking the original lock after it has been taken by a reverse lock
+    // makes no sense. Ensure that the original lock no longer owns the lock
+    // after giving it to a reverse one.
+
+    lock.lock();
+    BOOST_CHECK(lock.owns_lock());
+    {
+        REVERSE_LOCK(lock);
+        BOOST_CHECK(!lock.owns_lock());
+    }
+
+    BOOST_CHECK(failed);
+    BOOST_CHECK(lock.owns_lock());
+}
+
+BOOST_AUTO_TEST_SUITE_END()