1 files changed, 90 insertions, 0 deletions
diff --git a/Tests/LibC/TestPthreadRWLocks.cpp b/Tests/LibC/TestPthreadRWLocks.cpp
new file mode 100644
index 0000000000..720227ab7d
--- /dev/null
+++ b/Tests/LibC/TestPthreadRWLocks.cpp
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2021, Rodrigo Tobar <rtobarc@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibTest/TestCase.h>
+#include <pthread.h>
+
+TEST_CASE(rwlock_init)
+{
+    pthread_rwlock_t lock;
+    auto result = pthread_rwlock_init(&lock, nullptr);
+    EXPECT_EQ(0, result);
+}
+
+TEST_CASE(rwlock_rdlock)
+{
+    pthread_rwlock_t lock;
+    auto result = pthread_rwlock_init(&lock, nullptr);
+    EXPECT_EQ(0, result);
+
+    result = pthread_rwlock_rdlock(&lock);
+    EXPECT_EQ(0, result);
+    result = pthread_rwlock_unlock(&lock);
+    EXPECT_EQ(0, result);
+
+    result = pthread_rwlock_rdlock(&lock);
+    EXPECT_EQ(0, result);
+    result = pthread_rwlock_rdlock(&lock);
+    EXPECT_EQ(0, result);
+    result = pthread_rwlock_unlock(&lock);
+    EXPECT_EQ(0, result);
+    result = pthread_rwlock_unlock(&lock);
+    EXPECT_EQ(0, result);
+}
+
+TEST_CASE(rwlock_wrlock)
+{
+    pthread_rwlock_t lock;
+    auto result = pthread_rwlock_init(&lock, nullptr);
+    EXPECT_EQ(0, result);
+
+    result = pthread_rwlock_wrlock(&lock);
+    EXPECT_EQ(0, result);
+    result = pthread_rwlock_unlock(&lock);
+    EXPECT_EQ(0, result);
+}
+
+TEST_CASE(rwlock_rwr_sequence)
+{
+    pthread_rwlock_t lock;
+    auto result = pthread_rwlock_init(&lock, nullptr);
+    EXPECT_EQ(0, result);
+
+    result = pthread_rwlock_rdlock(&lock);
+    EXPECT_EQ(0, result);
+    result = pthread_rwlock_unlock(&lock);
+    EXPECT_EQ(0, result);
+
+    result = pthread_rwlock_wrlock(&lock);
+    EXPECT_EQ(0, result);
+    result = pthread_rwlock_unlock(&lock);
+    EXPECT_EQ(0, result);
+
+    result = pthread_rwlock_rdlock(&lock);
+    EXPECT_EQ(0, result);
+    result = pthread_rwlock_unlock(&lock);
+    EXPECT_EQ(0, result);
+}
+
+TEST_CASE(rwlock_wrlock_init_in_once)
+{
+    static pthread_rwlock_t lock;
+    static pthread_once_t once1 = PTHREAD_ONCE_INIT;
+    static pthread_once_t once2 = PTHREAD_ONCE_INIT;
+    static pthread_once_t once3 = PTHREAD_ONCE_INIT;
+    pthread_once(&once1, []() {
+        pthread_once(&once2, []() {
+            pthread_once(&once3, []() {
+                auto result = pthread_rwlock_init(&lock, nullptr);
+                EXPECT_EQ(0, result);
+            });
+        });
+    });
+    auto result = pthread_rwlock_wrlock(&lock);
+    EXPECT_EQ(0, result);
+    result = pthread_rwlock_unlock(&lock);
+    EXPECT_EQ(0, result);
+}