1 files changed, 37 insertions, 0 deletions
diff --git a/libc/test/src/__support/CPP/vector_test.cpp b/libc/test/src/__support/CPP/vector_test.cpp
new file mode 100644
index 000000000000..a27eafa151bc
--- /dev/null
+++ b/libc/test/src/__support/CPP/vector_test.cpp
@@ -0,0 +1,37 @@
+//===-- Unittests for vector ----------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/__support/CPP/vector.h"
+#include "utils/UnitTest/Test.h"
+
+TEST(LlvmLibcVectorTest, SimpleConstructor) {
+  __llvm_libc::cpp::vector<int> vec;
+}
+
+TEST(LlvmLibcVectorTest, OrderedWriteOrderedReadTest) {
+  __llvm_libc::cpp::vector<size_t> vec;
+
+  for (size_t i = 0; i < 100; i = i + 2) {
+    vec.push_back(i);
+  }
+  ASSERT_EQ(vec.size(), size_t(50));
+  ASSERT_GE(vec.capacity(), vec.size());
+  for (size_t j = 0; j < vec.size(); ++j) {
+    ASSERT_EQ(vec[j], j * 2);
+  }
+}
+
+TEST(LlvmLibcVectorTest, ReserveTest) {
+  __llvm_libc::cpp::vector<bool> vec;
+
+  size_t prev_capacity = vec.capacity();
+
+  vec.reserve(prev_capacity * 2);
+
+  ASSERT_GT(vec.capacity(), prev_capacity * 2);
+}