2 files changed, 195 insertions, 0 deletions
diff --git a/dom/fs/test/gtest/shared/TestFileSystemHelpers.cpp b/dom/fs/test/gtest/shared/TestFileSystemHelpers.cpp
new file mode 100644
index 0000000000..ed38026634
--- /dev/null
+++ b/dom/fs/test/gtest/shared/TestFileSystemHelpers.cpp
@@ -0,0 +1,179 @@
+/* -*- 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 "gtest/gtest.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/Unused.h"
+#include "mozilla/dom/FileSystemHelpers.h"
+
+namespace mozilla::dom::fs {
+
+namespace {
+
+class TestObject {
+ public:
+  explicit TestObject(uint32_t aExpectedAddRefCnt = 0,
+                      uint32_t aExpectedAddRegCnt = 0)
+      : mExpectedAddRefCnt(aExpectedAddRefCnt),
+        mExpectedAddRegCnt(aExpectedAddRegCnt),
+        mAddRefCnt(0),
+        mAddRegCnt(0),
+        mRefCnt(0),
+        mRegCnt(0),
+        mClosed(false) {}
+
+  uint32_t AddRef() {
+    mRefCnt++;
+    mAddRefCnt++;
+    return mRefCnt;
+  }
+
+  uint32_t Release() {
+    EXPECT_TRUE(mRefCnt > 0);
+    mRefCnt--;
+    if (mRefCnt == 0) {
+      delete this;
+      return 0;
+    }
+    return mRefCnt;
+  }
+
+  void Register() {
+    EXPECT_FALSE(mClosed);
+    mRegCnt++;
+    mAddRegCnt++;
+  }
+
+  void Unregister() {
+    EXPECT_FALSE(mClosed);
+    EXPECT_TRUE(mRegCnt > 0);
+    mRegCnt--;
+    if (mRegCnt == 0) {
+      mClosed = true;
+    }
+  }
+
+  void Foo() const {}
+
+ private:
+  ~TestObject() {
+    if (mExpectedAddRefCnt > 0) {
+      EXPECT_EQ(mAddRefCnt, mExpectedAddRefCnt);
+    }
+    if (mExpectedAddRegCnt > 0) {
+      EXPECT_EQ(mAddRegCnt, mExpectedAddRegCnt);
+    }
+  }
+
+  uint32_t mExpectedAddRefCnt;
+  uint32_t mExpectedAddRegCnt;
+  uint32_t mAddRefCnt;
+  uint32_t mAddRegCnt;
+  uint32_t mRefCnt;
+  uint32_t mRegCnt;
+  bool mClosed;
+};
+
+}  // namespace
+
+TEST(TestFileSystemHelpers_Registered, Construct_Default)
+{
+  { Registered<TestObject> testObject; }
+}
+
+TEST(TestFileSystemHelpers_Registered, Construct_Copy)
+{
+  {
+    Registered<TestObject> testObject1(MakeRefPtr<TestObject>(2, 2));
+    Registered<TestObject> testObject2(testObject1);
+    testObject2 = nullptr;
+  }
+}
+
+TEST(TestFileSystemHelpers_Registered, Construct_Move)
+{
+  {
+    Registered<TestObject> testObject1(MakeRefPtr<TestObject>(1, 1));
+    Registered<TestObject> testObject2(std::move(testObject1));
+  }
+}
+
+TEST(TestFileSystemHelpers_Registered, Construct_FromRefPtr)
+{
+  { Registered<TestObject> testObject(MakeRefPtr<TestObject>(1, 1)); }
+}
+
+TEST(TestFileSystemHelpers_Registered, Operator_Assign_FromNullPtr)
+{
+  {
+    Registered<TestObject> testObject;
+    testObject = nullptr;
+  }
+}
+
+TEST(TestFileSystemHelpers_Registered, Operator_Assign_Copy)
+{
+  {
+    Registered<TestObject> testObject1(MakeRefPtr<TestObject>(2, 2));
+    Registered<TestObject> testObject2;
+    testObject2 = testObject1;
+  }
+}
+
+TEST(TestFileSystemHelpers_Registered, Operator_Assign_Move)
+{
+  {
+    Registered<TestObject> testObject1(MakeRefPtr<TestObject>(1, 1));
+    Registered<TestObject> testObject2;
+    testObject2 = std::move(testObject1);
+  }
+}
+
+TEST(TestFileSystemHelpers_Registered, Method_Inspect)
+{
+  {
+    Registered<TestObject> testObject1(MakeRefPtr<TestObject>(1, 1));
+    const RefPtr<TestObject>& testObject2 = testObject1.inspect();
+    Unused << testObject2;
+  }
+}
+
+TEST(TestFileSystemHelpers_Registered, Method_Unwrap)
+{
+  {
+    Registered<TestObject> testObject1(MakeRefPtr<TestObject>(1, 1));
+    RefPtr<TestObject> testObject2 = testObject1.unwrap();
+    Unused << testObject2;
+  }
+}
+
+TEST(TestFileSystemHelpers_Registered, Method_Get)
+{
+  {
+    Registered<TestObject> testObject1(MakeRefPtr<TestObject>(1, 1));
+    TestObject* testObject2 = testObject1.get();
+    Unused << testObject2;
+  }
+}
+
+TEST(TestFileSystemHelpers_Registered, Operator_Conversion_ToRawPtr)
+{
+  {
+    Registered<TestObject> testObject1(MakeRefPtr<TestObject>(1, 1));
+    TestObject* testObject2 = testObject1;
+    Unused << testObject2;
+  }
+}
+
+TEST(TestFileSystemHelpers_Registered, Operator_Dereference_ToRawPtr)
+{
+  {
+    Registered<TestObject> testObject(MakeRefPtr<TestObject>(1, 1));
+    testObject->Foo();
+  }
+}
+
+}  // namespace mozilla::dom::fs
diff --git a/dom/fs/test/gtest/shared/moz.build b/dom/fs/test/gtest/shared/moz.build
new file mode 100644
index 0000000000..e8feae8c57
--- /dev/null
+++ b/dom/fs/test/gtest/shared/moz.build
@@ -0,0 +1,16 @@
+# -*- 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 = [
+    "TestFileSystemHelpers.cpp",
+]
+
+FINAL_LIBRARY = "xul-gtest"
+
+LOCAL_INCLUDES += [
+    "/dom/fs/shared",
+    "/dom/fs/test/gtest",
+]