1 files changed, 45 insertions, 0 deletions
diff --git a/test/util/posix_error_test.cc b/test/util/posix_error_test.cc
new file mode 100644
index 000000000..535b9f66a
--- /dev/null
+++ b/test/util/posix_error_test.cc
@@ -0,0 +1,45 @@
+// Copyright 2018 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "test/util/posix_error.h"
+
+#include <errno.h>
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+namespace gvisor {
+namespace testing {
+
+namespace {
+
+TEST(PosixErrorTest, PosixError) {
+  auto err = PosixError(EAGAIN);
+  EXPECT_THAT(err, PosixErrorIs(EAGAIN, ""));
+}
+
+TEST(PosixErrorTest, PosixErrorOrPosixError) {
+  auto err = PosixErrorOr<std::nullptr_t>(PosixError(EAGAIN));
+  EXPECT_THAT(err, PosixErrorIs(EAGAIN, ""));
+}
+
+TEST(PosixErrorTest, PosixErrorOrNullptr) {
+  auto err = PosixErrorOr<std::nullptr_t>(nullptr);
+  EXPECT_THAT(err, PosixErrorIs(0, ""));
+  EXPECT_NO_ERRNO(err);
+}
+
+}  // namespace
+
+}  // namespace testing
+}  // namespace gvisor