diff --git a/quic/platform/api/quic_containers_test.cc b/quic/platform/api/quic_containers_test.cc
new file mode 100644
index 0000000..b272b09
--- /dev/null
+++ b/quic/platform/api/quic_containers_test.cc
@@ -0,0 +1,63 @@
+// Copyright (c) 2018 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "net/third_party/quiche/src/quic/platform/api/quic_containers.h"
+
+#include "net/third_party/quiche/src/quic/platform/api/quic_test.h"
+
+using ::testing::ElementsAre;
+
+namespace quic {
+namespace test {
+namespace {
+
+TEST(QuicInlinedVectorTest, Swap) {
+  {
+    // Inline to inline.
+    QuicInlinedVector<int, 2> self({1, 2});
+    QuicInlinedVector<int, 2> other({3});
+
+    self.swap(other);
+
+    EXPECT_THAT(self, ElementsAre(3));
+    EXPECT_THAT(other, ElementsAre(1, 2));
+  }
+
+  {
+    // Inline to out-of-line.
+    QuicInlinedVector<int, 2> self({1, 2});
+    QuicInlinedVector<int, 2> other({3, 4, 5, 6});
+
+    self.swap(other);
+
+    EXPECT_THAT(self, ElementsAre(3, 4, 5, 6));
+    EXPECT_THAT(other, ElementsAre(1, 2));
+  }
+
+  {
+    // Out-of-line to inline.
+    QuicInlinedVector<int, 2> self({1, 2, 3});
+    QuicInlinedVector<int, 2> other({4, 5});
+
+    self.swap(other);
+
+    EXPECT_THAT(self, ElementsAre(4, 5));
+    EXPECT_THAT(other, ElementsAre(1, 2, 3));
+  }
+
+  {
+    // Out-of-line to Out-of-line.
+    QuicInlinedVector<int, 2> self({1, 2, 3});
+    QuicInlinedVector<int, 2> other({4, 5, 6, 7});
+
+    self.swap(other);
+
+    EXPECT_THAT(self, ElementsAre(4, 5, 6, 7));
+    EXPECT_THAT(other, ElementsAre(1, 2, 3));
+  }
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace quic