Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

3 files changed, 1125 insertions, 0 deletions

diff --git a/dom/fs/test/gtest/parent/datamodel/TestFileSystemDataManager.cpp b/dom/fs/test/gtest/parent/datamodel/TestFileSystemDataManager.cpp
new file mode 100644
index 0000000000..3082508540
--- /dev/null
+++ b/dom/fs/test/gtest/parent/datamodel/TestFileSystemDataManager.cpp
@@ -0,0 +1,182 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "FileSystemDataManager.h"
+#include "TestHelpers.h"
+#include "mozilla/MozPromise.h"
+#include "mozilla/SpinEventLoopUntil.h"
+#include "mozilla/dom/quota/ForwardDecls.h"
+#include "mozilla/dom/quota/test/QuotaManagerDependencyFixture.h"
+
+namespace mozilla::dom::fs::test {
+
+class TestFileSystemDataManager
+    : public quota::test::QuotaManagerDependencyFixture {
+ public:
+  static void SetUpTestCase() { ASSERT_NO_FATAL_FAILURE(InitializeFixture()); }
+
+  static void TearDownTestCase() { ASSERT_NO_FATAL_FAILURE(ShutdownFixture()); }
+};
+
+TEST_F(TestFileSystemDataManager, GetOrCreateFileSystemDataManager) {
+  auto backgroundTask = []() {
+    bool done = false;
+
+    data::FileSystemDataManager::GetOrCreateFileSystemDataManager(
+        GetTestOriginMetadata())
+        ->Then(
+            GetCurrentSerialEventTarget(), __func__,
+            [](Registered<data::FileSystemDataManager> registeredDataManager) {
+              RefPtr<data::FileSystemDataManager> dataManager =
+                  registeredDataManager.get();
+
+              registeredDataManager = nullptr;
+
+              return dataManager->OnClose();
+            },
+            [](nsresult rejectValue) {
+              return BoolPromise::CreateAndReject(rejectValue, __func__);
+            })
+        ->Then(
+            GetCurrentSerialEventTarget(), __func__,
+            [&done](const BoolPromise::ResolveOrRejectValue&) { done = true; });
+
+    SpinEventLoopUntil("Promise is fulfilled"_ns, [&done]() { return done; });
+  };
+
+  PerformOnBackgroundThread(std::move(backgroundTask));
+}
+
+TEST_F(TestFileSystemDataManager,
+       GetOrCreateFileSystemDataManager_PendingOpen) {
+  auto backgroundTask = []() {
+    Registered<data::FileSystemDataManager> rdm1;
+
+    Registered<data::FileSystemDataManager> rdm2;
+
+    {
+      bool done1 = false;
+
+      data::FileSystemDataManager::GetOrCreateFileSystemDataManager(
+          GetTestOriginMetadata())
+          ->Then(
+              GetCurrentSerialEventTarget(), __func__,
+              [&rdm1, &done1](Registered<data::FileSystemDataManager>
+                                  registeredDataManager) {
+                ASSERT_TRUE(registeredDataManager->IsOpen());
+
+                rdm1 = std::move(registeredDataManager);
+
+                done1 = true;
+              },
+              [&done1](nsresult rejectValue) { done1 = true; });
+
+      bool done2 = false;
+
+      data::FileSystemDataManager::GetOrCreateFileSystemDataManager(
+          GetTestOriginMetadata())
+          ->Then(
+              GetCurrentSerialEventTarget(), __func__,
+              [&rdm2, &done2](Registered<data::FileSystemDataManager>
+                                  registeredDataManager) {
+                ASSERT_TRUE(registeredDataManager->IsOpen());
+
+                rdm2 = std::move(registeredDataManager);
+
+                done2 = true;
+              },
+              [&done2](nsresult rejectValue) { done2 = true; });
+
+      SpinEventLoopUntil("Promise is fulfilled"_ns,
+                         [&done1, &done2]() { return done1 && done2; });
+    }
+
+    RefPtr<data::FileSystemDataManager> dm1 = rdm1.unwrap();
+
+    RefPtr<data::FileSystemDataManager> dm2 = rdm2.unwrap();
+
+    {
+      bool done1 = false;
+
+      dm1->OnClose()->Then(
+          GetCurrentSerialEventTarget(), __func__,
+          [&done1](const BoolPromise::ResolveOrRejectValue&) { done1 = true; });
+
+      bool done2 = false;
+
+      dm2->OnClose()->Then(
+          GetCurrentSerialEventTarget(), __func__,
+          [&done2](const BoolPromise::ResolveOrRejectValue&) { done2 = true; });
+
+      SpinEventLoopUntil("Promise is fulfilled"_ns,
+                         [&done1, &done2]() { return done1 && done2; });
+    }
+  };
+
+  PerformOnBackgroundThread(std::move(backgroundTask));
+}
+
+TEST_F(TestFileSystemDataManager,
+       GetOrCreateFileSystemDataManager_PendingClose) {
+  auto backgroundTask = []() {
+    Registered<data::FileSystemDataManager> rdm;
+
+    {
+      bool done = false;
+
+      data::FileSystemDataManager::GetOrCreateFileSystemDataManager(
+          GetTestOriginMetadata())
+          ->Then(
+              GetCurrentSerialEventTarget(), __func__,
+              [&rdm, &done](Registered<data::FileSystemDataManager>
+                                registeredDataManager) {
+                ASSERT_TRUE(registeredDataManager->IsOpen());
+
+                rdm = std::move(registeredDataManager);
+
+                done = true;
+              },
+              [&done](nsresult rejectValue) { done = true; });
+
+      SpinEventLoopUntil("Promise is fulfilled"_ns, [&done]() { return done; });
+    }
+
+    RefPtr<data::FileSystemDataManager> dm = rdm.unwrap();
+
+    Unused << dm;
+
+    {
+      bool done = false;
+
+      data::FileSystemDataManager::GetOrCreateFileSystemDataManager(
+          GetTestOriginMetadata())
+          ->Then(
+              GetCurrentSerialEventTarget(), __func__,
+              [](Registered<data::FileSystemDataManager>
+                     registeredDataManager) {
+                RefPtr<data::FileSystemDataManager> dataManager =
+                    registeredDataManager.get();
+
+                registeredDataManager = nullptr;
+
+                return dataManager->OnClose();
+              },
+              [](nsresult rejectValue) {
+                return BoolPromise::CreateAndReject(rejectValue, __func__);
+              })
+          ->Then(GetCurrentSerialEventTarget(), __func__,
+                 [&done](const BoolPromise::ResolveOrRejectValue&) {
+                   done = true;
+                 });
+
+      SpinEventLoopUntil("Promise is fulfilled"_ns, [&done]() { return done; });
+    }
+  };
+
+  PerformOnBackgroundThread(std::move(backgroundTask));
+}
+
+}  // namespace mozilla::dom::fs::test
diff --git a/dom/fs/test/gtest/parent/datamodel/TestFileSystemDataManagerVersion001.cpp b/dom/fs/test/gtest/parent/datamodel/TestFileSystemDataManagerVersion001.cpp
new file mode 100644
index 0000000000..f08132221b
--- /dev/null
+++ b/dom/fs/test/gtest/parent/datamodel/TestFileSystemDataManagerVersion001.cpp
@@ -0,0 +1,921 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <algorithm>
+
+#include "ErrorList.h"
+#include "FileSystemDataManager.h"
+#include "FileSystemDatabaseManagerVersion001.h"
+#include "FileSystemFileManager.h"
+#include "FileSystemHashSource.h"
+#include "ResultStatement.h"
+#include "SchemaVersion001.h"
+#include "TestHelpers.h"
+#include "gtest/gtest.h"
+#include "mozIStorageService.h"
+#include "mozStorageCID.h"
+#include "mozStorageHelper.h"
+#include "mozilla/Array.h"
+#include "mozilla/ErrorNames.h"
+#include "mozilla/Result.h"
+#include "mozilla/dom/FileSystemTypes.h"
+#include "mozilla/dom/PFileSystemManager.h"
+#include "mozilla/dom/quota/CommonMetadata.h"
+#include "mozilla/dom/quota/test/QuotaManagerDependencyFixture.h"
+#include "nsContentUtils.h"
+#include "nsIFile.h"
+#include "nsLiteralString.h"
+#include "nsNetCID.h"
+#include "nsReadableUtils.h"
+#include "nsString.h"
+#include "nsStringFwd.h"
+#include "nsTArray.h"
+#include "nsTHashSet.h"
+
+namespace mozilla::dom::fs::test {
+
+using data::FileSystemDatabaseManagerVersion001;
+using data::FileSystemFileManager;
+
+// This is a minimal mock  to allow us to safely call the lock methods
+// while avoiding assertions
+class MockFileSystemDataManager final : public data::FileSystemDataManager {
+ public:
+  MockFileSystemDataManager(const quota::OriginMetadata& aOriginMetadata,
+                            MovingNotNull<nsCOMPtr<nsIEventTarget>> aIOTarget,
+                            MovingNotNull<RefPtr<TaskQueue>> aIOTaskQueue)
+      : FileSystemDataManager(aOriginMetadata, nullptr, std::move(aIOTarget),
+                              std::move(aIOTaskQueue)) {}
+
+  virtual ~MockFileSystemDataManager() {
+    // Need to avoid assertions
+    mState = State::Closed;
+  }
+};
+
+static void MakeDatabaseManagerVersion001(
+    RefPtr<MockFileSystemDataManager>& aDataManager,
+    FileSystemDatabaseManagerVersion001*& aDatabaseManager) {
+  TEST_TRY_UNWRAP(auto storageService,
+                  MOZ_TO_RESULT_GET_TYPED(nsCOMPtr<mozIStorageService>,
+                                          MOZ_SELECT_OVERLOAD(do_GetService),
+                                          MOZ_STORAGE_SERVICE_CONTRACTID));
+
+  const auto flags = mozIStorageService::CONNECTION_DEFAULT;
+  ResultConnection connection;
+
+  nsresult rv = storageService->OpenSpecialDatabase(kMozStorageMemoryStorageKey,
+                                                    VoidCString(), flags,
+                                                    getter_AddRefs(connection));
+  ASSERT_NSEQ(NS_OK, rv);
+
+  const Origin& testOrigin = GetTestOrigin();
+
+  TEST_TRY_UNWRAP(
+      DatabaseVersion version,
+      SchemaVersion001::InitializeConnection(connection, testOrigin));
+  ASSERT_EQ(1, version);
+
+  TEST_TRY_UNWRAP(EntryId rootId, data::GetRootHandle(GetTestOrigin()));
+
+  auto fmRes = FileSystemFileManager::CreateFileSystemFileManager(
+      GetTestOriginMetadata());
+  ASSERT_FALSE(fmRes.isErr());
+
+  QM_TRY_UNWRAP(auto streamTransportService,
+                MOZ_TO_RESULT_GET_TYPED(nsCOMPtr<nsIEventTarget>,
+                                        MOZ_SELECT_OVERLOAD(do_GetService),
+                                        NS_STREAMTRANSPORTSERVICE_CONTRACTID),
+                QM_VOID);
+
+  quota::OriginMetadata originMetadata = GetTestOriginMetadata();
+
+  nsCString taskQueueName("OPFS "_ns + originMetadata.mOrigin);
+
+  RefPtr<TaskQueue> ioTaskQueue =
+      TaskQueue::Create(do_AddRef(streamTransportService), taskQueueName.get());
+
+  aDataManager = MakeRefPtr<MockFileSystemDataManager>(
+      originMetadata, WrapMovingNotNull(streamTransportService),
+      WrapMovingNotNull(ioTaskQueue));
+
+  aDatabaseManager = new FileSystemDatabaseManagerVersion001(
+      aDataManager, std::move(connection),
+      MakeUnique<FileSystemFileManager>(fmRes.unwrap()), rootId);
+}
+
+class TestFileSystemDatabaseManagerVersion001
+    : public quota::test::QuotaManagerDependencyFixture {
+ public:
+  void SetUp() override { ASSERT_NO_FATAL_FAILURE(InitializeFixture()); }
+
+  void TearDown() override {
+    ASSERT_NO_FATAL_FAILURE(ClearStoragesForOrigin(GetTestOriginMetadata()));
+    ASSERT_NO_FATAL_FAILURE(ShutdownFixture());
+  }
+
+  static ContentType sContentType;
+};
+
+ContentType TestFileSystemDatabaseManagerVersion001::sContentType = "psid"_ns;
+
+TEST_F(TestFileSystemDatabaseManagerVersion001,
+       smokeTestCreateRemoveDirectories) {
+  auto ioTask = []() {
+    nsresult rv = NS_OK;
+    // Ensure that FileSystemDataManager lives for the lifetime of the test
+    RefPtr<MockFileSystemDataManager> dataManager;
+    FileSystemDatabaseManagerVersion001* rdm = nullptr;
+    ASSERT_NO_FATAL_FAILURE(MakeDatabaseManagerVersion001(dataManager, rdm));
+    UniquePtr<FileSystemDatabaseManagerVersion001> dm(rdm);
+    // if any of these exit early, we have to close
+    auto autoClose = MakeScopeExit([rdm] { rdm->Close(); });
+
+    TEST_TRY_UNWRAP(EntryId rootId, data::GetRootHandle(GetTestOrigin()));
+
+    FileSystemChildMetadata firstChildMeta(rootId, u"First"_ns);
+    TEST_TRY_UNWRAP_ERR(
+        rv, dm->GetOrCreateDirectory(firstChildMeta, /* create */ false));
+    ASSERT_NSEQ(NS_ERROR_DOM_NOT_FOUND_ERR, rv);
+
+    TEST_TRY_UNWRAP(EntryId firstChild, dm->GetOrCreateDirectory(
+                                            firstChildMeta, /* create */ true));
+
+    int32_t dbVersion = 0;
+    TEST_TRY_UNWRAP(FileSystemDirectoryListing entries,
+                    dm->GetDirectoryEntries(rootId, dbVersion));
+    ASSERT_EQ(1u, entries.directories().Length());
+    ASSERT_EQ(0u, entries.files().Length());
+
+    const auto& firstItemRef = entries.directories()[0];
+    ASSERT_TRUE(u"First"_ns == firstItemRef.entryName())
+    << firstItemRef.entryName();
+    ASSERT_EQ(firstChild, firstItemRef.entryId());
+
+    TEST_TRY_UNWRAP(
+        EntryId firstChildClone,
+        dm->GetOrCreateDirectory(firstChildMeta, /* create */ true));
+    ASSERT_EQ(firstChild, firstChildClone);
+
+    FileSystemChildMetadata secondChildMeta(firstChild, u"Second"_ns);
+    TEST_TRY_UNWRAP(
+        EntryId secondChild,
+        dm->GetOrCreateDirectory(secondChildMeta, /* create */ true));
+
+    FileSystemEntryPair shortPair(firstChild, secondChild);
+    TEST_TRY_UNWRAP(Path shortPath, dm->Resolve(shortPair));
+    ASSERT_EQ(1u, shortPath.Length());
+    ASSERT_EQ(u"Second"_ns, shortPath[0]);
+
+    FileSystemEntryPair longPair(rootId, secondChild);
+    TEST_TRY_UNWRAP(Path longPath, dm->Resolve(longPair));
+    ASSERT_EQ(2u, longPath.Length());
+    ASSERT_EQ(u"First"_ns, longPath[0]);
+    ASSERT_EQ(u"Second"_ns, longPath[1]);
+
+    FileSystemEntryPair wrongPair(secondChild, rootId);
+    TEST_TRY_UNWRAP(Path emptyPath, dm->Resolve(wrongPair));
+    ASSERT_TRUE(emptyPath.IsEmpty());
+
+    PageNumber page = 0;
+    TEST_TRY_UNWRAP(FileSystemDirectoryListing fEntries,
+                    dm->GetDirectoryEntries(firstChild, page));
+    ASSERT_EQ(1u, fEntries.directories().Length());
+    ASSERT_EQ(0u, fEntries.files().Length());
+
+    const auto& secItemRef = fEntries.directories()[0];
+    ASSERT_TRUE(u"Second"_ns == secItemRef.entryName())
+    << secItemRef.entryName();
+    ASSERT_EQ(secondChild, secItemRef.entryId());
+
+    TEST_TRY_UNWRAP_ERR(
+        rv, dm->RemoveDirectory(firstChildMeta, /* recursive */ false));
+    ASSERT_NSEQ(NS_ERROR_DOM_INVALID_MODIFICATION_ERR, rv);
+
+    TEST_TRY_UNWRAP(bool isDeleted,
+                    dm->RemoveDirectory(firstChildMeta, /* recursive */ true));
+    ASSERT_TRUE(isDeleted);
+
+    FileSystemChildMetadata thirdChildMeta(secondChild, u"Second"_ns);
+    TEST_TRY_UNWRAP_ERR(
+        rv, dm->GetOrCreateDirectory(thirdChildMeta, /* create */ true));
+    ASSERT_NSEQ(NS_ERROR_STORAGE_CONSTRAINT, rv);  // Is this a good error?
+
+    dm->Close();
+  };
+
+  PerformOnIOThread(std::move(ioTask));
+}
+
+TEST_F(TestFileSystemDatabaseManagerVersion001, smokeTestCreateRemoveFiles) {
+  auto ioTask = []() {
+    nsresult rv = NS_OK;
+    // Ensure that FileSystemDataManager lives for the lifetime of the test
+    RefPtr<MockFileSystemDataManager> datamanager;
+    FileSystemDatabaseManagerVersion001* rdm = nullptr;
+    ASSERT_NO_FATAL_FAILURE(MakeDatabaseManagerVersion001(datamanager, rdm));
+    UniquePtr<FileSystemDatabaseManagerVersion001> dm(rdm);
+
+    TEST_TRY_UNWRAP(EntryId rootId, data::GetRootHandle(GetTestOrigin()));
+
+    FileSystemChildMetadata firstChildMeta(rootId, u"First"_ns);
+    // If creating is not allowed, getting a file from empty root fails
+    TEST_TRY_UNWRAP_ERR(rv, dm->GetOrCreateFile(firstChildMeta, sContentType,
+                                                /* create */ false));
+    ASSERT_NSEQ(NS_ERROR_DOM_NOT_FOUND_ERR, rv);
+
+    // Creating a file under empty root succeeds
+    TEST_TRY_UNWRAP(
+        EntryId firstChild,
+        dm->GetOrCreateFile(firstChildMeta, sContentType, /* create */ true));
+
+    // Second time, the same file is returned
+    TEST_TRY_UNWRAP(
+        EntryId firstChildClone,
+        dm->GetOrCreateFile(firstChildMeta, sContentType, /* create */ true));
+    ASSERT_EQ(firstChild, firstChildClone);
+
+    // Directory listing returns the created file
+    PageNumber page = 0;
+    TEST_TRY_UNWRAP(FileSystemDirectoryListing entries,
+                    dm->GetDirectoryEntries(rootId, page));
+    ASSERT_EQ(0u, entries.directories().Length());
+    ASSERT_EQ(1u, entries.files().Length());
+
+    auto& firstItemRef = entries.files()[0];
+    ASSERT_TRUE(u"First"_ns == firstItemRef.entryName())
+    << firstItemRef.entryName();
+    ASSERT_EQ(firstChild, firstItemRef.entryId());
+
+    ContentType type;
+    TimeStamp lastModifiedMilliSeconds;
+    Path path;
+    nsCOMPtr<nsIFile> file;
+    rv = dm->GetFile(firstItemRef.entryId(), type, lastModifiedMilliSeconds,
+                     path, file);
+    ASSERT_NSEQ(NS_OK, rv);
+
+    ASSERT_STREQ(sContentType, type);
+
+    const int64_t nowMilliSeconds = PR_Now() / 1000;
+    ASSERT_GE(nowMilliSeconds, lastModifiedMilliSeconds);
+    const int64_t expectedMaxDelayMilliSeconds = 100;
+    const int64_t actualDelay = nowMilliSeconds - lastModifiedMilliSeconds;
+    ASSERT_LT(actualDelay, expectedMaxDelayMilliSeconds);
+
+    ASSERT_EQ(1u, path.Length());
+    ASSERT_STREQ(u"First"_ns, path[0]);
+
+    ASSERT_NE(nullptr, file);
+
+    // Getting the file entry as directory fails
+    TEST_TRY_UNWRAP_ERR(
+        rv, dm->GetOrCreateDirectory(firstChildMeta, /* create */ false));
+    ASSERT_NSEQ(NS_ERROR_DOM_TYPE_MISMATCH_ERR, rv);
+
+    // Getting or creating the file entry as directory also fails
+    TEST_TRY_UNWRAP_ERR(
+        rv, dm->GetOrCreateDirectory(firstChildMeta, /* create */ true));
+    ASSERT_NSEQ(NS_ERROR_DOM_TYPE_MISMATCH_ERR, rv);
+
+    // Creating a file with non existing parent hash fails
+
+    EntryId notAChildHash = "0123456789abcdef0123456789abcdef"_ns;
+    FileSystemChildMetadata notAChildMeta(notAChildHash, u"Dummy"_ns);
+    TEST_TRY_UNWRAP_ERR(rv, dm->GetOrCreateFile(notAChildMeta, sContentType,
+                                                /* create */ true));
+    ASSERT_NSEQ(NS_ERROR_STORAGE_CONSTRAINT, rv);  // Is this a good error?
+
+    // We create a directory under root
+    FileSystemChildMetadata secondChildMeta(rootId, u"Second"_ns);
+    TEST_TRY_UNWRAP(
+        EntryId secondChild,
+        dm->GetOrCreateDirectory(secondChildMeta, /* create */ true));
+
+    // The root should now contain the existing file and the new directory
+    TEST_TRY_UNWRAP(FileSystemDirectoryListing fEntries,
+                    dm->GetDirectoryEntries(rootId, page));
+    ASSERT_EQ(1u, fEntries.directories().Length());
+    ASSERT_EQ(1u, fEntries.files().Length());
+
+    const auto& secItemRef = fEntries.directories()[0];
+    ASSERT_TRUE(u"Second"_ns == secItemRef.entryName())
+    << secItemRef.entryName();
+    ASSERT_EQ(secondChild, secItemRef.entryId());
+
+    // Create a file under the new directory
+    FileSystemChildMetadata thirdChildMeta(secondChild, u"Third"_ns);
+    TEST_TRY_UNWRAP(
+        EntryId thirdChild,
+        dm->GetOrCreateFile(thirdChildMeta, sContentType, /* create */ true));
+
+    FileSystemEntryPair entryPair(rootId, thirdChild);
+    TEST_TRY_UNWRAP(Path entryPath, dm->Resolve(entryPair));
+    ASSERT_EQ(2u, entryPath.Length());
+    ASSERT_EQ(u"Second"_ns, entryPath[0]);
+    ASSERT_EQ(u"Third"_ns, entryPath[1]);
+
+    // If recursion is not allowed, the non-empty new directory may not be
+    // removed
+    TEST_TRY_UNWRAP_ERR(
+        rv, dm->RemoveDirectory(secondChildMeta, /* recursive */ false));
+    ASSERT_NSEQ(NS_ERROR_DOM_INVALID_MODIFICATION_ERR, rv);
+
+    // If recursion is allowed, the new directory goes away.
+    TEST_TRY_UNWRAP(bool isDeleted,
+                    dm->RemoveDirectory(secondChildMeta, /* recursive */ true));
+    ASSERT_TRUE(isDeleted);
+
+    // The file under the removed directory is no longer accessible.
+    TEST_TRY_UNWRAP_ERR(rv, dm->GetOrCreateFile(thirdChildMeta, sContentType,
+                                                /* create */ true));
+    ASSERT_NSEQ(NS_ERROR_STORAGE_CONSTRAINT, rv);  // Is this a good error?
+
+    // The deletion is reflected by the root directory listing
+    TEST_TRY_UNWRAP(FileSystemDirectoryListing nEntries,
+                    dm->GetDirectoryEntries(rootId, 0));
+    ASSERT_EQ(0u, nEntries.directories().Length());
+    ASSERT_EQ(1u, nEntries.files().Length());
+
+    const auto& fileItemRef = nEntries.files()[0];
+    ASSERT_TRUE(u"First"_ns == fileItemRef.entryName())
+    << fileItemRef.entryName();
+    ASSERT_EQ(firstChild, fileItemRef.entryId());
+
+    dm->Close();
+  };
+
+  PerformOnIOThread(std::move(ioTask));
+}
+
+TEST_F(TestFileSystemDatabaseManagerVersion001,
+       smokeTestCreateMoveDirectories) {
+  auto ioTask = []() {
+    // Ensure that FileSystemDataManager lives for the lifetime of the test
+    RefPtr<MockFileSystemDataManager> datamanager;
+    FileSystemDatabaseManagerVersion001* rdm = nullptr;
+    ASSERT_NO_FATAL_FAILURE(MakeDatabaseManagerVersion001(datamanager, rdm));
+    UniquePtr<FileSystemDatabaseManagerVersion001> dm(rdm);
+    auto closeAtExit = MakeScopeExit([&dm]() { dm->Close(); });
+
+    TEST_TRY_UNWRAP(EntryId rootId, data::GetRootHandle(GetTestOrigin()));
+
+    FileSystemEntryMetadata rootMeta{rootId, u"root"_ns,
+                                     /* is directory */ true};
+
+    {
+      // Sanity check: no existing items should be found
+      TEST_TRY_UNWRAP(FileSystemDirectoryListing contents,
+                      dm->GetDirectoryEntries(rootId, /* page */ 0u));
+      ASSERT_TRUE(contents.directories().IsEmpty());
+      ASSERT_TRUE(contents.files().IsEmpty());
+    }
+
+    // Create subdirectory
+    FileSystemChildMetadata firstChildMeta(rootId, u"First"_ns);
+    TEST_TRY_UNWRAP(
+        EntryId firstChildDir,
+        dm->GetOrCreateDirectory(firstChildMeta, /* create */ true));
+
+    {
+      // Check that directory listing is as expected
+      TEST_TRY_UNWRAP(FileSystemDirectoryListing contents,
+                      dm->GetDirectoryEntries(rootId, /* page */ 0u));
+      ASSERT_TRUE(contents.files().IsEmpty());
+      ASSERT_EQ(1u, contents.directories().Length());
+      ASSERT_STREQ(firstChildMeta.childName(),
+                   contents.directories()[0].entryName());
+    }
+
+    {
+      // Try to move subdirectory to its current location
+      FileSystemEntryMetadata src{firstChildDir, firstChildMeta.childName(),
+                                  /* is directory */ true};
+      FileSystemChildMetadata dest{rootId, src.entryName()};
+      TEST_TRY_UNWRAP(bool moved, dm->MoveEntry(src, dest));
+      ASSERT_TRUE(moved);
+    }
+
+    {
+      // Try to move subdirectory under itself
+      FileSystemEntryMetadata src{firstChildDir, firstChildMeta.childName(),
+                                  /* is directory */ true};
+      FileSystemChildMetadata dest{src.entryId(), src.entryName()};
+      TEST_TRY_UNWRAP_ERR(nsresult rv, dm->MoveEntry(src, dest));
+      ASSERT_NSEQ(NS_ERROR_DOM_INVALID_MODIFICATION_ERR, rv);
+    }
+
+    {
+      // Try to move root under its subdirectory
+      FileSystemEntryMetadata src{rootId, rootMeta.entryName(),
+                                  /* is directory */ true};
+      FileSystemChildMetadata dest{firstChildDir, src.entryName()};
+      TEST_TRY_UNWRAP_ERR(nsresult rv, dm->MoveEntry(src, dest));
+      ASSERT_NSEQ(NS_ERROR_DOM_NOT_FOUND_ERR, rv);
+    }
+
+    // Create subsubdirectory
+    FileSystemChildMetadata firstChildDescendantMeta(firstChildDir,
+                                                     u"Descendant"_ns);
+    TEST_TRY_UNWRAP(EntryId firstChildDescendant,
+                    dm->GetOrCreateDirectory(firstChildDescendantMeta,
+                                             /* create */ true));
+
+    {
+      TEST_TRY_UNWRAP(FileSystemDirectoryListing contents,
+                      dm->GetDirectoryEntries(firstChildDir, /* page */ 0u));
+      ASSERT_TRUE(contents.files().IsEmpty());
+      ASSERT_EQ(1u, contents.directories().Length());
+      ASSERT_STREQ(firstChildDescendantMeta.childName(),
+                   contents.directories()[0].entryName());
+
+      TEST_TRY_UNWRAP(
+          Path subSubDirPath,
+          dm->Resolve({rootId, contents.directories()[0].entryId()}));
+      ASSERT_EQ(2u, subSubDirPath.Length());
+      ASSERT_STREQ(firstChildMeta.childName(), subSubDirPath[0]);
+      ASSERT_STREQ(firstChildDescendantMeta.childName(), subSubDirPath[1]);
+    }
+
+    {
+      // Try to move subsubdirectory to its current location
+      FileSystemEntryMetadata src{firstChildDescendant,
+                                  firstChildDescendantMeta.childName(),
+                                  /* is directory */ true};
+      FileSystemChildMetadata dest{firstChildDir, src.entryName()};
+      TEST_TRY_UNWRAP(bool moved, dm->MoveEntry(src, dest));
+      ASSERT_TRUE(moved);
+    }
+
+    {
+      // Try to move subsubdirectory under itself
+      FileSystemEntryMetadata src{firstChildDescendant,
+                                  firstChildDescendantMeta.childName(),
+                                  /* is directory */ true};
+      FileSystemChildMetadata dest{src.entryId(), src.entryName()};
+      TEST_TRY_UNWRAP_ERR(nsresult rv, dm->MoveEntry(src, dest));
+      ASSERT_NSEQ(NS_ERROR_DOM_INVALID_MODIFICATION_ERR, rv);
+    }
+
+    {
+      // Try to move subdirectory under its descendant
+      FileSystemEntryMetadata src{firstChildDir, firstChildMeta.childName(),
+                                  /* is directory */ true};
+      FileSystemChildMetadata dest{firstChildDescendant, src.entryName()};
+      TEST_TRY_UNWRAP_ERR(nsresult rv, dm->MoveEntry(src, dest));
+      ASSERT_NSEQ(NS_ERROR_DOM_INVALID_MODIFICATION_ERR, rv);
+    }
+
+    {
+      // Try to move root under its subsubdirectory
+      FileSystemEntryMetadata src{rootId, rootMeta.entryName(),
+                                  /* is directory */ true};
+      FileSystemChildMetadata dest{firstChildDescendant, src.entryName()};
+      TEST_TRY_UNWRAP_ERR(nsresult rv, dm->MoveEntry(src, dest));
+      ASSERT_NSEQ(NS_ERROR_DOM_NOT_FOUND_ERR, rv);
+    }
+
+    // Create file in the subdirectory with already existing subsubdirectory
+    FileSystemChildMetadata testFileMeta(firstChildDir, u"Subfile"_ns);
+    TEST_TRY_UNWRAP(
+        EntryId testFile,
+        dm->GetOrCreateFile(testFileMeta, sContentType, /* create */ true));
+
+    // Get handles to the original locations of the entries
+    FileSystemEntryMetadata subSubDir;
+    FileSystemEntryMetadata subSubFile;
+
+    {
+      TEST_TRY_UNWRAP(FileSystemDirectoryListing contents,
+                      dm->GetDirectoryEntries(firstChildDir, /* page */ 0u));
+      ASSERT_EQ(1u, contents.files().Length());
+      ASSERT_EQ(1u, contents.directories().Length());
+
+      subSubDir = contents.directories()[0];
+      ASSERT_STREQ(firstChildDescendantMeta.childName(), subSubDir.entryName());
+
+      subSubFile = contents.files()[0];
+      ASSERT_STREQ(testFileMeta.childName(), subSubFile.entryName());
+      ASSERT_EQ(testFile, subSubFile.entryId());
+    }
+
+    {
+      TEST_TRY_UNWRAP(Path entryPath,
+                      dm->Resolve({rootId, subSubFile.entryId()}));
+      ASSERT_EQ(2u, entryPath.Length());
+      ASSERT_STREQ(firstChildMeta.childName(), entryPath[0]);
+      ASSERT_STREQ(testFileMeta.childName(), entryPath[1]);
+    }
+
+    {
+      // Try to move file to its current location
+      FileSystemEntryMetadata src{testFile, testFileMeta.childName(),
+                                  /* is directory */ false};
+      FileSystemChildMetadata dest{firstChildDir, src.entryName()};
+      TEST_TRY_UNWRAP(bool isMoved, dm->MoveEntry(src, dest));
+      ASSERT_TRUE(isMoved);
+    }
+
+    {
+      // Try to move subsubdirectory under a file
+      FileSystemEntryMetadata src{firstChildDescendant,
+                                  firstChildDescendantMeta.childName(),
+                                  /* is directory */ true};
+      FileSystemChildMetadata dest{testFile,
+                                   firstChildDescendantMeta.childName()};
+      TEST_TRY_UNWRAP_ERR(nsresult rv, dm->MoveEntry(src, dest));
+      ASSERT_NSEQ(NS_ERROR_STORAGE_CONSTRAINT, rv);
+    }
+
+    {
+      // Silently overwrite a directory with a file using rename
+      FileSystemEntryMetadata src{testFile, testFileMeta.childName(),
+                                  /* is directory */ false};
+      const FileSystemChildMetadata& dest = firstChildDescendantMeta;
+      TEST_TRY_UNWRAP(bool isMoved, dm->MoveEntry(src, dest));
+      ASSERT_TRUE(isMoved);
+    }
+
+    {
+      // Move file back and recreate the directory
+      FileSystemEntryMetadata src{testFile,
+                                  firstChildDescendantMeta.childName(),
+                                  /* is directory */ false};
+
+      TEST_TRY_UNWRAP(bool isMoved, dm->MoveEntry(src, testFileMeta));
+      ASSERT_TRUE(isMoved);
+
+      TEST_TRY_UNWRAP(EntryId firstChildDescendantCheck,
+                      dm->GetOrCreateDirectory(firstChildDescendantMeta,
+                                               /* create */ true));
+      ASSERT_EQ(firstChildDescendant, firstChildDescendantCheck);
+    }
+
+    {
+      // Try to rename directory to quietly overwrite a file
+      FileSystemEntryMetadata src{firstChildDescendant,
+                                  firstChildDescendantMeta.childName(),
+                                  /* is directory */ true};
+      const FileSystemChildMetadata& dest = testFileMeta;
+      TEST_TRY_UNWRAP(bool isMoved, dm->MoveEntry(src, dest));
+      ASSERT_TRUE(isMoved);
+    }
+
+    {
+      // Move directory back and recreate the file
+      FileSystemEntryMetadata src{firstChildDescendant,
+                                  testFileMeta.childName(),
+                                  /* is directory */ true};
+
+      FileSystemChildMetadata dest{firstChildDir,
+                                   firstChildDescendantMeta.childName()};
+
+      TEST_TRY_UNWRAP(bool isMoved, dm->MoveEntry(src, dest));
+      ASSERT_TRUE(isMoved);
+
+      TEST_TRY_UNWRAP(
+          EntryId testFileCheck,
+          dm->GetOrCreateFile(testFileMeta, sContentType, /* create */ true));
+      ASSERT_EQ(testFile, testFileCheck);
+    }
+
+    {
+      // Move file one level up
+      FileSystemEntryMetadata src{testFile, testFileMeta.childName(),
+                                  /* is directory */ false};
+      FileSystemChildMetadata dest{rootId, src.entryName()};
+      TEST_TRY_UNWRAP(bool isMoved, dm->MoveEntry(src, dest));
+      ASSERT_TRUE(isMoved);
+    }
+
+    {
+      // Check that listings are as expected
+      TEST_TRY_UNWRAP(FileSystemDirectoryListing contents,
+                      dm->GetDirectoryEntries(firstChildDir, 0u));
+      ASSERT_TRUE(contents.files().IsEmpty());
+      ASSERT_EQ(1u, contents.directories().Length());
+      ASSERT_STREQ(firstChildDescendantMeta.childName(),
+                   contents.directories()[0].entryName());
+    }
+
+    {
+      TEST_TRY_UNWRAP(FileSystemDirectoryListing contents,
+                      dm->GetDirectoryEntries(rootId, 0u));
+      ASSERT_EQ(1u, contents.files().Length());
+      ASSERT_EQ(1u, contents.files().Length());
+      ASSERT_STREQ(testFileMeta.childName(), contents.files()[0].entryName());
+    }
+
+    {
+      TEST_TRY_UNWRAP(Path entryPath,
+                      dm->Resolve({rootId, subSubFile.entryId()}));
+      ASSERT_EQ(1u, entryPath.Length());
+      ASSERT_STREQ(testFileMeta.childName(), entryPath[0]);
+    }
+
+    {
+      // Try to get a handle to the old item
+      TEST_TRY_UNWRAP_ERR(
+          nsresult rv,
+          dm->GetOrCreateFile(testFileMeta, sContentType, /* create */ false));
+      ASSERT_NSEQ(NS_ERROR_DOM_NOT_FOUND_ERR, rv);
+    }
+
+    {
+      // Try to move + rename file one level down to collide with a
+      // subSubDirectory, silently overwriting it
+      FileSystemEntryMetadata src{testFile, testFileMeta.childName(),
+                                  /* is directory */ false};
+      FileSystemChildMetadata dest{firstChildDir,
+                                   firstChildDescendantMeta.childName()};
+      TEST_TRY_UNWRAP(bool isMoved, dm->MoveEntry(src, dest));
+      ASSERT_TRUE(isMoved);
+    }
+
+    {
+      // Restore filename, move file to its original location and recreate
+      // the overwritten directory
+      FileSystemEntryMetadata src{testFile,
+                                  firstChildDescendantMeta.childName(),
+                                  /* is directory */ false};
+      FileSystemChildMetadata dest{rootId, testFileMeta.childName()};
+      TEST_TRY_UNWRAP(bool isMoved, dm->MoveEntry(src, dest));
+      ASSERT_TRUE(isMoved);
+
+      FileSystemChildMetadata oldLocation{firstChildDir,
+                                          firstChildDescendantMeta.childName()};
+
+      // Is there still something out there?
+      TEST_TRY_UNWRAP_ERR(
+          nsresult rv,
+          dm->GetOrCreateFile(oldLocation, sContentType, /* create */ false));
+      ASSERT_NSEQ(NS_ERROR_DOM_NOT_FOUND_ERR, rv);
+
+      TEST_TRY_UNWRAP(EntryId firstChildDescendantCheck,
+                      dm->GetOrCreateDirectory(oldLocation, /* create */ true));
+      ASSERT_EQ(firstChildDescendant, firstChildDescendantCheck);
+    }
+
+    // Rename file first and then try to move it to collide with
+    // subSubDirectory, silently overwriting it
+    {
+      // Rename
+      FileSystemEntryMetadata src{testFile, testFileMeta.childName(),
+                                  /* is directory */ false};
+      FileSystemChildMetadata dest{rootId,
+                                   firstChildDescendantMeta.childName()};
+      TEST_TRY_UNWRAP(bool isMoved, dm->MoveEntry(src, dest));
+      ASSERT_TRUE(isMoved);
+    }
+
+    {
+      // Try to move one level down
+      FileSystemEntryMetadata src{testFile,
+                                  firstChildDescendantMeta.childName(),
+                                  /* is directory */ false};
+      FileSystemChildMetadata dest{firstChildDir,
+                                   firstChildDescendantMeta.childName()};
+      TEST_TRY_UNWRAP(bool isMoved, dm->MoveEntry(src, dest));
+      ASSERT_TRUE(isMoved);
+    }
+
+    {
+      // Move the file back and recreate the directory
+      FileSystemEntryMetadata src{testFile,
+                                  firstChildDescendantMeta.childName(),
+                                  /* is directory */ false};
+      FileSystemChildMetadata dest{rootId,
+                                   firstChildDescendantMeta.childName()};
+      TEST_TRY_UNWRAP(bool isMoved, dm->MoveEntry(src, dest));
+      ASSERT_TRUE(isMoved);
+
+      FileSystemChildMetadata oldLocation{firstChildDir,
+                                          firstChildDescendantMeta.childName()};
+
+      // Is there still something out there?
+      TEST_TRY_UNWRAP_ERR(
+          nsresult rv,
+          dm->GetOrCreateFile(oldLocation, sContentType, /* create */ false));
+      ASSERT_NSEQ(NS_ERROR_DOM_NOT_FOUND_ERR, rv);
+
+      TEST_TRY_UNWRAP(EntryId firstChildDescendantCheck,
+                      dm->GetOrCreateDirectory(oldLocation, /* create */ true));
+      ASSERT_EQ(firstChildDescendant, firstChildDescendantCheck);
+    }
+
+    {
+      // Try to move subSubDirectory one level up to quietly overwrite a file
+      FileSystemEntryMetadata src{firstChildDescendant,
+                                  firstChildDescendantMeta.childName(),
+                                  /* is directory */ true};
+      FileSystemChildMetadata dest{rootId,
+                                   firstChildDescendantMeta.childName()};
+      TEST_TRY_UNWRAP(bool isMoved, dm->MoveEntry(src, dest));
+      ASSERT_TRUE(isMoved);
+    }
+
+    {
+      // Move subSubDirectory back one level down and recreate the file
+      FileSystemEntryMetadata src{firstChildDescendant,
+                                  firstChildDescendantMeta.childName(),
+                                  /* is directory */ true};
+      FileSystemChildMetadata dest{firstChildDir,
+                                   firstChildDescendantMeta.childName()};
+      TEST_TRY_UNWRAP(bool isMoved, dm->MoveEntry(src, dest));
+      ASSERT_TRUE(isMoved);
+
+      FileSystemChildMetadata oldLocation{rootId,
+                                          firstChildDescendantMeta.childName()};
+
+      // We should no longer find anything there
+      TEST_TRY_UNWRAP_ERR(nsresult rv, dm->GetOrCreateDirectory(
+                                           oldLocation, /* create */ false));
+      ASSERT_NSEQ(NS_ERROR_DOM_NOT_FOUND_ERR, rv);
+
+      TEST_TRY_UNWRAP(
+          EntryId testFileCheck,
+          dm->GetOrCreateFile(oldLocation, sContentType, /* create */ true));
+      ASSERT_NE(testFile, testFileCheck);
+      testFile = testFileCheck;
+    }
+
+    // Create a new file in the subsubdirectory
+    FileSystemChildMetadata newFileMeta{firstChildDescendant,
+                                        testFileMeta.childName()};
+    TEST_TRY_UNWRAP(
+        EntryId newFile,
+        dm->GetOrCreateFile(newFileMeta, sContentType, /* create */ true));
+
+    {
+      TEST_TRY_UNWRAP(Path entryPath, dm->Resolve({rootId, newFile}));
+      ASSERT_EQ(3u, entryPath.Length());
+      ASSERT_STREQ(firstChildMeta.childName(), entryPath[0]);
+      ASSERT_STREQ(firstChildDescendantMeta.childName(), entryPath[1]);
+      ASSERT_STREQ(testFileMeta.childName(), entryPath[2]);
+    }
+
+    {
+      // Move subSubDirectory one level up and rename it to testFile's old name
+      FileSystemEntryMetadata src{firstChildDescendant,
+                                  firstChildDescendantMeta.childName(),
+                                  /* is directory */ true};
+      FileSystemChildMetadata dest{rootId, testFileMeta.childName()};
+      TEST_TRY_UNWRAP(bool isMoved, dm->MoveEntry(src, dest));
+      ASSERT_TRUE(isMoved);
+    }
+
+    {
+      // Try to get handles to the moved items
+      TEST_TRY_UNWRAP_ERR(nsresult rv,
+                          dm->GetOrCreateDirectory(firstChildDescendantMeta,
+                                                   /* create */ false));
+      ASSERT_NSEQ(NS_ERROR_DOM_NOT_FOUND_ERR, rv);
+
+      // Still under the same parent
+      TEST_TRY_UNWRAP(
+          EntryId handle,
+          dm->GetOrCreateFile(newFileMeta, sContentType, /* create */ false));
+      ASSERT_EQ(handle, newFile);
+
+      TEST_TRY_UNWRAP(
+          handle, dm->GetOrCreateDirectory({rootId, testFileMeta.childName()},
+                                           /* create */ false));
+      ASSERT_EQ(handle, firstChildDescendant);
+    }
+
+    {
+      // Check that new file path is as expected
+      TEST_TRY_UNWRAP(Path entryPath, dm->Resolve({rootId, newFile}));
+      ASSERT_EQ(2u, entryPath.Length());
+      ASSERT_STREQ(testFileMeta.childName(), entryPath[0]);
+      ASSERT_STREQ(testFileMeta.childName(), entryPath[1]);
+    }
+
+    // Move first file and subSubDirectory back one level down keeping the names
+    {
+      FileSystemEntryMetadata src{testFile,
+                                  firstChildDescendantMeta.childName(),
+                                  /* is directory */ false};
+      FileSystemChildMetadata dest{firstChildDir,
+                                   firstChildDescendantMeta.childName()};
+
+      // Flag is ignored
+      TEST_TRY_UNWRAP(bool isMoved, dm->MoveEntry(src, dest));
+      ASSERT_TRUE(isMoved);
+    }
+
+    {
+      // Then move the directory
+      FileSystemEntryMetadata src{firstChildDescendant,
+                                  testFileMeta.childName(),
+                                  /* is directory */ true};
+      FileSystemChildMetadata dest{firstChildDir, testFileMeta.childName()};
+
+      // Flag is ignored
+      TEST_TRY_UNWRAP(bool isMoved, dm->MoveEntry(src, dest));
+      ASSERT_TRUE(isMoved);
+    }
+
+    // Check that listings are as expected
+    {
+      TEST_TRY_UNWRAP(FileSystemDirectoryListing contents,
+                      dm->GetDirectoryEntries(rootId, 0u));
+      ASSERT_TRUE(contents.files().IsEmpty());
+      ASSERT_EQ(1u, contents.directories().Length());
+      ASSERT_STREQ(firstChildMeta.childName(),
+                   contents.directories()[0].entryName());
+    }
+
+    {
+      TEST_TRY_UNWRAP(FileSystemDirectoryListing contents,
+                      dm->GetDirectoryEntries(firstChildDir, 0u));
+      ASSERT_EQ(1u, contents.files().Length());
+      ASSERT_EQ(1u, contents.directories().Length());
+      ASSERT_STREQ(firstChildDescendantMeta.childName(),
+                   contents.files()[0].entryName());
+      ASSERT_STREQ(testFileMeta.childName(),
+                   contents.directories()[0].entryName());
+    }
+
+    {
+      TEST_TRY_UNWRAP(FileSystemDirectoryListing contents,
+                      dm->GetDirectoryEntries(firstChildDescendant, 0u));
+      ASSERT_EQ(1u, contents.files().Length());
+      ASSERT_TRUE(contents.directories().IsEmpty());
+      ASSERT_STREQ(testFileMeta.childName(), contents.files()[0].entryName());
+    }
+
+    // Names are swapped
+    {
+      TEST_TRY_UNWRAP(Path entryPath, dm->Resolve({rootId, testFile}));
+      ASSERT_EQ(2u, entryPath.Length());
+      ASSERT_STREQ(firstChildMeta.childName(), entryPath[0]);
+      ASSERT_STREQ(firstChildDescendantMeta.childName(), entryPath[1]);
+    }
+
+    {
+      TEST_TRY_UNWRAP(Path entryPath,
+                      dm->Resolve({rootId, subSubDir.entryId()}));
+      ASSERT_EQ(2u, entryPath.Length());
+      ASSERT_STREQ(firstChildMeta.childName(), entryPath[0]);
+      ASSERT_STREQ(testFileMeta.childName(), entryPath[1]);
+    }
+
+    {
+      // Check that new file path is also as expected
+      TEST_TRY_UNWRAP(Path entryPath, dm->Resolve({rootId, newFile}));
+      ASSERT_EQ(3u, entryPath.Length());
+      ASSERT_STREQ(firstChildMeta.childName(), entryPath[0]);
+      ASSERT_STREQ(testFileMeta.childName(), entryPath[1]);
+      ASSERT_STREQ(testFileMeta.childName(), entryPath[2]);
+    }
+
+    {
+      // Try to get handles to the old items
+      TEST_TRY_UNWRAP_ERR(
+          nsresult rv, dm->GetOrCreateFile({rootId, testFileMeta.childName()},
+                                           sContentType, /* create */ false));
+      ASSERT_NSEQ(NS_ERROR_DOM_NOT_FOUND_ERR, rv);
+
+      TEST_TRY_UNWRAP_ERR(
+          rv,
+          dm->GetOrCreateFile({rootId, firstChildDescendantMeta.childName()},
+                              sContentType, /* create */ false));
+      ASSERT_NSEQ(NS_ERROR_DOM_NOT_FOUND_ERR, rv);
+
+      TEST_TRY_UNWRAP_ERR(
+          rv, dm->GetOrCreateDirectory({rootId, testFileMeta.childName()},
+                                       /* create */ false));
+      ASSERT_NSEQ(NS_ERROR_DOM_NOT_FOUND_ERR, rv);
+
+      TEST_TRY_UNWRAP_ERR(rv,
+                          dm->GetOrCreateDirectory(
+                              {rootId, firstChildDescendantMeta.childName()},
+                              /* create */ false));
+      ASSERT_NSEQ(NS_ERROR_DOM_NOT_FOUND_ERR, rv);
+
+      TEST_TRY_UNWRAP_ERR(
+          rv, dm->GetOrCreateFile({firstChildDir, testFileMeta.childName()},
+                                  sContentType, /* create */ false));
+      ASSERT_NSEQ(NS_ERROR_DOM_TYPE_MISMATCH_ERR, rv);
+
+      TEST_TRY_UNWRAP_ERR(
+          rv, dm->GetOrCreateDirectory(
+                  {firstChildDir, firstChildDescendantMeta.childName()},
+                  /* create */ false));
+      ASSERT_NSEQ(NS_ERROR_DOM_TYPE_MISMATCH_ERR, rv);
+
+      TEST_TRY_UNWRAP_ERR(
+          rv, dm->GetOrCreateFile({testFile, newFileMeta.childName()},
+                                  sContentType, /* create */ false));
+      ASSERT_NSEQ(NS_ERROR_DOM_NOT_FOUND_ERR, rv);
+    }
+  };
+
+  PerformOnIOThread(std::move(ioTask));
+}
+
+}  // namespace mozilla::dom::fs::test
diff --git a/dom/fs/test/gtest/parent/datamodel/moz.build b/dom/fs/test/gtest/parent/datamodel/moz.build
new file mode 100644
index 0000000000..a1a75c7b65
--- /dev/null
+++ b/dom/fs/test/gtest/parent/datamodel/moz.build
@@ -0,0 +1,22 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, you can obtain one at http://mozilla.org/MPL/2.0/.
+
+UNIFIED_SOURCES = [
+    "TestFileSystemDataManager.cpp",
+    "TestFileSystemDataManagerVersion001.cpp",
+]
+
+include("/ipc/chromium/chromium-config.mozbuild")
+
+FINAL_LIBRARY = "xul-gtest"
+
+LOCAL_INCLUDES += [
+    "/dom/fs/include",
+    "/dom/fs/parent",
+    "/dom/fs/parent/datamodel",
+    "/dom/fs/test/gtest",
+    "/dom/fs/test/gtest/parent",
+]