1 files changed, 92 insertions, 0 deletions
diff --git a/brillo/namespaces/mount_namespace_test.cc b/brillo/namespaces/mount_namespace_test.cc
new file mode 100644
index 0000000..1bfa038
--- /dev/null
+++ b/brillo/namespaces/mount_namespace_test.cc
@@ -0,0 +1,92 @@
+// Copyright 2020 The Chromium OS 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 "brillo/namespaces/mock_platform.h"
+#include "brillo/namespaces/mount_namespace.h"
+#include "brillo/namespaces/platform.h"
+
+#include <unistd.h>
+
+#include <memory>
+
+#include <base/files/file_path.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+using ::testing::_;
+using ::testing::DoAll;
+using ::testing::NiceMock;
+using ::testing::Return;
+using ::testing::SetArgPointee;
+
+namespace brillo {
+
+class MountNamespaceTest : public ::testing::Test {
+ public:
+  MountNamespaceTest() {}
+  ~MountNamespaceTest() {}
+  void SetUp() {}
+
+  void TearDown() {}
+
+ protected:
+  NiceMock<MockPlatform> platform_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MountNamespaceTest);
+};
+
+TEST_F(MountNamespaceTest, CreateNamespace) {
+  std::unique_ptr<MountNamespace> ns =
+      std::make_unique<MountNamespace>(base::FilePath(), &platform_);
+  EXPECT_CALL(platform_, Fork()).WillOnce(Return(1));
+  EXPECT_CALL(platform_, Mount(_, _, _, _, _)).WillOnce(Return(0));
+  EXPECT_CALL(platform_, Waitpid(_, _))
+      .WillOnce(DoAll(SetArgPointee<1>(0x00000000), Return(0)));
+  EXPECT_TRUE(ns->Create());
+  EXPECT_CALL(platform_, Unmount(ns->path(), _, _)).WillOnce(Return(true));
+}
+
+TEST_F(MountNamespaceTest, CreateNamespaceFailedOnWaitpid) {
+  std::unique_ptr<MountNamespace> ns =
+      std::make_unique<MountNamespace>(base::FilePath(), &platform_);
+  EXPECT_CALL(platform_, Fork()).WillOnce(Return(1));
+  EXPECT_CALL(platform_, Mount(_, _, _, _, _)).WillOnce(Return(0));
+  EXPECT_CALL(platform_, Waitpid(_, _)).WillOnce(Return(-1));
+  EXPECT_FALSE(ns->Create());
+}
+
+TEST_F(MountNamespaceTest, CreateNamespaceFailedOnMount) {
+  std::unique_ptr<MountNamespace> ns =
+      std::make_unique<MountNamespace>(base::FilePath(), &platform_);
+  EXPECT_CALL(platform_, Fork()).WillOnce(Return(1));
+  EXPECT_CALL(platform_, Mount(_, _, _, _, _)).WillOnce(Return(-1));
+  EXPECT_FALSE(ns->Create());
+}
+
+TEST_F(MountNamespaceTest, CreateNamespaceFailedOnStatus) {
+  std::unique_ptr<MountNamespace> ns =
+      std::make_unique<MountNamespace>(base::FilePath(), &platform_);
+  EXPECT_CALL(platform_, Fork()).WillOnce(Return(1));
+  EXPECT_CALL(platform_, Mount(_, _, _, _, _)).WillOnce(Return(0));
+  EXPECT_CALL(platform_, Waitpid(_, _))
+      .WillOnce(DoAll(SetArgPointee<1>(0xFFFFFFFF), Return(0)));
+  EXPECT_FALSE(ns->Create());
+}
+
+TEST_F(MountNamespaceTest, DestroyAfterUnmountFailsAndUnmountSucceeds) {
+  std::unique_ptr<MountNamespace> ns =
+      std::make_unique<MountNamespace>(base::FilePath(), &platform_);
+  EXPECT_CALL(platform_, Fork()).WillOnce(Return(1));
+  EXPECT_CALL(platform_, Mount(_, _, _, _, _)).WillOnce(Return(0));
+  EXPECT_CALL(platform_, Waitpid(_, _))
+      .WillOnce(DoAll(SetArgPointee<1>(0x00000000), Return(0)));
+  EXPECT_TRUE(ns->Create());
+  EXPECT_CALL(platform_, Unmount(ns->path(), _, _)).WillOnce(Return(false));
+  EXPECT_FALSE(ns->Destroy());
+  EXPECT_CALL(platform_, Unmount(ns->path(), _, _)).WillOnce(Return(true));
+  EXPECT_TRUE(ns->Destroy());
+}
+
+}  // namespace brillo