From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 19:32:43 +0200
Subject: Adding upstream version 1:115.7.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 dom/media/gtest/TestMediaEventSource.cpp | 490 +++++++++++++++++++++++++++++++
 1 file changed, 490 insertions(+)
 create mode 100644 dom/media/gtest/TestMediaEventSource.cpp

(limited to 'dom/media/gtest/TestMediaEventSource.cpp')

diff --git a/dom/media/gtest/TestMediaEventSource.cpp b/dom/media/gtest/TestMediaEventSource.cpp
new file mode 100644
index 0000000000..811e2bec9f
--- /dev/null
+++ b/dom/media/gtest/TestMediaEventSource.cpp
@@ -0,0 +1,490 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/SharedThreadPool.h"
+#include "mozilla/TaskQueue.h"
+#include "mozilla/UniquePtr.h"
+#include "MediaEventSource.h"
+#include "VideoUtils.h"
+
+using namespace mozilla;
+
+/*
+ * Test if listeners receive the event data correctly.
+ */
+TEST(MediaEventSource, SingleListener)
+{
+  RefPtr<TaskQueue> queue =
+      TaskQueue::Create(GetMediaThreadPool(MediaThreadType::SUPERVISOR),
+                        "TestMediaEventSource SingleListener");
+
+  MediaEventProducer<int> source;
+  int i = 0;
+
+  auto func = [&](int j) { i += j; };
+  MediaEventListener listener = source.Connect(queue, func);
+
+  // Call Notify 3 times. The listener should be also called 3 times.
+  source.Notify(3);
+  source.Notify(5);
+  source.Notify(7);
+
+  queue->BeginShutdown();
+  queue->AwaitShutdownAndIdle();
+
+  // Verify the event data is passed correctly to the listener.
+  EXPECT_EQ(i, 15);  // 3 + 5 + 7
+  listener.Disconnect();
+}
+
+TEST(MediaEventSource, MultiListener)
+{
+  RefPtr<TaskQueue> queue =
+      TaskQueue::Create(GetMediaThreadPool(MediaThreadType::SUPERVISOR),
+                        "TestMediaEventSource MultiListener");
+
+  MediaEventProducer<int> source;
+  int i = 0;
+  int j = 0;
+
+  auto func1 = [&](int k) { i = k * 2; };
+  auto func2 = [&](int k) { j = k * 3; };
+  MediaEventListener listener1 = source.Connect(queue, func1);
+  MediaEventListener listener2 = source.Connect(queue, func2);
+
+  // Both listeners should receive the event.
+  source.Notify(11);
+
+  queue->BeginShutdown();
+  queue->AwaitShutdownAndIdle();
+
+  // Verify the event data is passed correctly to the listener.
+  EXPECT_EQ(i, 22);  // 11 * 2
+  EXPECT_EQ(j, 33);  // 11 * 3
+
+  listener1.Disconnect();
+  listener2.Disconnect();
+}
+
+/*
+ * Test if disconnecting a listener prevents events from coming.
+ */
+TEST(MediaEventSource, DisconnectAfterNotification)
+{
+  RefPtr<TaskQueue> queue =
+      TaskQueue::Create(GetMediaThreadPool(MediaThreadType::SUPERVISOR),
+                        "TestMediaEventSource DisconnectAfterNotification");
+
+  MediaEventProducer<int> source;
+  int i = 0;
+
+  MediaEventListener listener;
+  auto func = [&](int j) {
+    i += j;
+    listener.Disconnect();
+  };
+  listener = source.Connect(queue, func);
+
+  // Call Notify() twice. Since we disconnect the listener when receiving
+  // the 1st event, the 2nd event should not reach the listener.
+  source.Notify(11);
+  source.Notify(11);
+
+  queue->BeginShutdown();
+  queue->AwaitShutdownAndIdle();
+
+  // Check only the 1st event is received.
+  EXPECT_EQ(i, 11);
+}
+
+TEST(MediaEventSource, DisconnectBeforeNotification)
+{
+  RefPtr<TaskQueue> queue =
+      TaskQueue::Create(GetMediaThreadPool(MediaThreadType::SUPERVISOR),
+                        "TestMediaEventSource DisconnectBeforeNotification");
+
+  MediaEventProducer<int> source;
+  int i = 0;
+  int j = 0;
+
+  auto func1 = [&](int k) { i = k * 2; };
+  auto func2 = [&](int k) { j = k * 3; };
+  MediaEventListener listener1 = source.Connect(queue, func1);
+  MediaEventListener listener2 = source.Connect(queue, func2);
+
+  // Disconnect listener2 before notification. Only listener1 should receive
+  // the event.
+  listener2.Disconnect();
+  source.Notify(11);
+
+  queue->BeginShutdown();
+  queue->AwaitShutdownAndIdle();
+
+  EXPECT_EQ(i, 22);  // 11 * 2
+  EXPECT_EQ(j, 0);   // event not received
+
+  listener1.Disconnect();
+}
+
+/*
+ * Test we don't hit the assertion when calling Connect() and Disconnect()
+ * repeatedly.
+ */
+TEST(MediaEventSource, DisconnectAndConnect)
+{
+  RefPtr<TaskQueue> queue =
+      TaskQueue::Create(GetMediaThreadPool(MediaThreadType::SUPERVISOR),
+                        "TestMediaEventSource DisconnectAndConnect");
+
+  MediaEventProducerExc<int> source;
+  MediaEventListener listener = source.Connect(queue, []() {});
+  listener.Disconnect();
+  listener = source.Connect(queue, []() {});
+  listener.Disconnect();
+}
+
+/*
+ * Test void event type.
+ */
+TEST(MediaEventSource, VoidEventType)
+{
+  RefPtr<TaskQueue> queue =
+      TaskQueue::Create(GetMediaThreadPool(MediaThreadType::SUPERVISOR),
+                        "TestMediaEventSource VoidEventType");
+
+  MediaEventProducer<void> source;
+  int i = 0;
+
+  // Test function object.
+  auto func = [&]() { ++i; };
+  MediaEventListener listener1 = source.Connect(queue, func);
+
+  // Test member function.
+  struct Foo {
+    Foo() : j(1) {}
+    void OnNotify() { j *= 2; }
+    int j;
+  } foo;
+  MediaEventListener listener2 = source.Connect(queue, &foo, &Foo::OnNotify);
+
+  // Call Notify 2 times. The listener should be also called 2 times.
+  source.Notify();
+  source.Notify();
+
+  queue->BeginShutdown();
+  queue->AwaitShutdownAndIdle();
+
+  // Verify the event data is passed correctly to the listener.
+  EXPECT_EQ(i, 2);      // ++i called twice
+  EXPECT_EQ(foo.j, 4);  // |j *= 2| called twice
+  listener1.Disconnect();
+  listener2.Disconnect();
+}
+
+/*
+ * Test listeners can take various event types (T, T&&, const T& and void).
+ */
+TEST(MediaEventSource, ListenerType1)
+{
+  RefPtr<TaskQueue> queue =
+      TaskQueue::Create(GetMediaThreadPool(MediaThreadType::SUPERVISOR),
+                        "TestMediaEventSource ListenerType1");
+
+  MediaEventProducer<int> source;
+  int i = 0;
+
+  // Test various argument types.
+  auto func1 = [&](int&& j) { i += j; };
+  auto func2 = [&](const int& j) { i += j; };
+  auto func3 = [&]() { i += 1; };
+  MediaEventListener listener1 = source.Connect(queue, func1);
+  MediaEventListener listener2 = source.Connect(queue, func2);
+  MediaEventListener listener3 = source.Connect(queue, func3);
+
+  source.Notify(1);
+
+  queue->BeginShutdown();
+  queue->AwaitShutdownAndIdle();
+
+  EXPECT_EQ(i, 3);
+
+  listener1.Disconnect();
+  listener2.Disconnect();
+  listener3.Disconnect();
+}
+
+TEST(MediaEventSource, ListenerType2)
+{
+  RefPtr<TaskQueue> queue =
+      TaskQueue::Create(GetMediaThreadPool(MediaThreadType::SUPERVISOR),
+                        "TestMediaEventSource ListenerType2");
+
+  MediaEventProducer<int> source;
+
+  struct Foo {
+    Foo() : mInt(0) {}
+    void OnNotify1(int&& i) { mInt += i; }
+    void OnNotify2(const int& i) { mInt += i; }
+    void OnNotify3() { mInt += 1; }
+    void OnNotify4(int i) const { mInt += i; }
+    void OnNotify5(int i) volatile { mInt = mInt + i; }
+    mutable int mInt;
+  } foo;
+
+  // Test member functions which might be CV qualified.
+  MediaEventListener listener1 = source.Connect(queue, &foo, &Foo::OnNotify1);
+  MediaEventListener listener2 = source.Connect(queue, &foo, &Foo::OnNotify2);
+  MediaEventListener listener3 = source.Connect(queue, &foo, &Foo::OnNotify3);
+  MediaEventListener listener4 = source.Connect(queue, &foo, &Foo::OnNotify4);
+  MediaEventListener listener5 = source.Connect(queue, &foo, &Foo::OnNotify5);
+
+  source.Notify(1);
+
+  queue->BeginShutdown();
+  queue->AwaitShutdownAndIdle();
+
+  EXPECT_EQ(foo.mInt, 5);
+
+  listener1.Disconnect();
+  listener2.Disconnect();
+  listener3.Disconnect();
+  listener4.Disconnect();
+  listener5.Disconnect();
+}
+
+struct SomeEvent {
+  explicit SomeEvent(int& aCount) : mCount(aCount) {}
+  // Increment mCount when copy constructor is called to know how many times
+  // the event data is copied.
+  SomeEvent(const SomeEvent& aOther) : mCount(aOther.mCount) { ++mCount; }
+  SomeEvent(SomeEvent&& aOther) : mCount(aOther.mCount) {}
+  int& mCount;
+};
+
+/*
+ * Test we don't have unnecessary copies of the event data.
+ */
+TEST(MediaEventSource, CopyEvent1)
+{
+  RefPtr<TaskQueue> queue =
+      TaskQueue::Create(GetMediaThreadPool(MediaThreadType::SUPERVISOR),
+                        "TestMediaEventSource CopyEvent1");
+
+  MediaEventProducer<SomeEvent> source;
+  int i = 0;
+
+  auto func = [](SomeEvent&& aEvent) {};
+  struct Foo {
+    void OnNotify(SomeEvent&& aEvent) {}
+  } foo;
+
+  MediaEventListener listener1 = source.Connect(queue, func);
+  MediaEventListener listener2 = source.Connect(queue, &foo, &Foo::OnNotify);
+
+  // We expect i to be 2 since SomeEvent should be copied only once when
+  // passing to each listener.
+  source.Notify(SomeEvent(i));
+
+  queue->BeginShutdown();
+  queue->AwaitShutdownAndIdle();
+  EXPECT_EQ(i, 2);
+  listener1.Disconnect();
+  listener2.Disconnect();
+}
+
+TEST(MediaEventSource, CopyEvent2)
+{
+  RefPtr<TaskQueue> queue =
+      TaskQueue::Create(GetMediaThreadPool(MediaThreadType::SUPERVISOR),
+                        "TestMediaEventSource CopyEvent2");
+
+  MediaEventProducer<SomeEvent> source;
+  int i = 0;
+
+  auto func = []() {};
+  struct Foo {
+    void OnNotify() {}
+  } foo;
+
+  MediaEventListener listener1 = source.Connect(queue, func);
+  MediaEventListener listener2 = source.Connect(queue, &foo, &Foo::OnNotify);
+
+  // SomeEvent won't be copied at all since the listeners take no arguments.
+  source.Notify(SomeEvent(i));
+
+  queue->BeginShutdown();
+  queue->AwaitShutdownAndIdle();
+  EXPECT_EQ(i, 0);
+  listener1.Disconnect();
+  listener2.Disconnect();
+}
+
+/*
+ * Test move-only types.
+ */
+TEST(MediaEventSource, MoveOnly)
+{
+  RefPtr<TaskQueue> queue =
+      TaskQueue::Create(GetMediaThreadPool(MediaThreadType::SUPERVISOR),
+                        "TestMediaEventSource MoveOnly");
+
+  MediaEventProducerExc<UniquePtr<int>> source;
+
+  auto func = [](UniquePtr<int>&& aEvent) { EXPECT_EQ(*aEvent, 20); };
+  MediaEventListener listener = source.Connect(queue, func);
+
+  // It is OK to pass an rvalue which is move-only.
+  source.Notify(UniquePtr<int>(new int(20)));
+  // It is an error to pass an lvalue which is move-only.
+  // UniquePtr<int> event(new int(30));
+  // source.Notify(event);
+
+  queue->BeginShutdown();
+  queue->AwaitShutdownAndIdle();
+  listener.Disconnect();
+}
+
+struct RefCounter {
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(RefCounter)
+  explicit RefCounter(int aVal) : mVal(aVal) {}
+  int mVal;
+
+ private:
+  ~RefCounter() = default;
+};
+
+/*
+ * Test we should copy instead of move in NonExclusive mode
+ * for each listener must get a copy.
+ */
+TEST(MediaEventSource, NoMove)
+{
+  RefPtr<TaskQueue> queue =
+      TaskQueue::Create(GetMediaThreadPool(MediaThreadType::SUPERVISOR),
+                        "TestMediaEventSource NoMove");
+
+  MediaEventProducer<RefPtr<RefCounter>> source;
+
+  auto func1 = [](RefPtr<RefCounter>&& aEvent) { EXPECT_EQ(aEvent->mVal, 20); };
+  auto func2 = [](RefPtr<RefCounter>&& aEvent) { EXPECT_EQ(aEvent->mVal, 20); };
+  MediaEventListener listener1 = source.Connect(queue, func1);
+  MediaEventListener listener2 = source.Connect(queue, func2);
+
+  // We should copy this rvalue instead of move it in NonExclusive mode.
+  RefPtr<RefCounter> val = new RefCounter(20);
+  source.Notify(std::move(val));
+
+  queue->BeginShutdown();
+  queue->AwaitShutdownAndIdle();
+  listener1.Disconnect();
+  listener2.Disconnect();
+}
+
+/*
+ * Rvalue lambda should be moved instead of copied.
+ */
+TEST(MediaEventSource, MoveLambda)
+{
+  RefPtr<TaskQueue> queue =
+      TaskQueue::Create(GetMediaThreadPool(MediaThreadType::SUPERVISOR),
+                        "TestMediaEventSource MoveLambda");
+
+  MediaEventProducer<void> source;
+
+  int counter = 0;
+  SomeEvent someEvent(counter);
+
+  auto func = [someEvent]() {};
+  // someEvent is copied when captured by the lambda.
+  EXPECT_EQ(someEvent.mCount, 1);
+
+  // someEvent should be copied for we pass |func| as an lvalue.
+  MediaEventListener listener1 = source.Connect(queue, func);
+  EXPECT_EQ(someEvent.mCount, 2);
+
+  // someEvent should be moved for we pass |func| as an rvalue.
+  MediaEventListener listener2 = source.Connect(queue, std::move(func));
+  EXPECT_EQ(someEvent.mCount, 2);
+
+  listener1.Disconnect();
+  listener2.Disconnect();
+}
+
+template <typename Bool>
+struct DestroyChecker {
+  explicit DestroyChecker(Bool* aIsDestroyed) : mIsDestroyed(aIsDestroyed) {
+    EXPECT_FALSE(*mIsDestroyed);
+  }
+  ~DestroyChecker() {
+    EXPECT_FALSE(*mIsDestroyed);
+    *mIsDestroyed = true;
+  }
+
+ private:
+  Bool* const mIsDestroyed;
+};
+
+class ClassForDestroyCheck final : private DestroyChecker<bool> {
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ClassForDestroyCheck);
+
+  explicit ClassForDestroyCheck(bool* aIsDestroyed)
+      : DestroyChecker(aIsDestroyed) {}
+
+  int32_t RefCountNums() const { return mRefCnt; }
+
+ protected:
+  ~ClassForDestroyCheck() = default;
+};
+
+TEST(MediaEventSource, ResetFuncReferenceAfterDisconnect)
+{
+  const RefPtr<TaskQueue> queue = TaskQueue::Create(
+      GetMediaThreadPool(MediaThreadType::SUPERVISOR),
+      "TestMediaEventSource ResetFuncReferenceAfterDisconnect");
+  MediaEventProducer<void> source;
+
+  // Using a class that supports refcounting to check the object destruction.
+  bool isDestroyed = false;
+  auto object = MakeRefPtr<ClassForDestroyCheck>(&isDestroyed);
+  EXPECT_FALSE(isDestroyed);
+  EXPECT_EQ(object->RefCountNums(), 1);
+
+  // Function holds a strong reference to object.
+  MediaEventListener listener = source.Connect(queue, [ptr = object] {});
+  EXPECT_FALSE(isDestroyed);
+  EXPECT_EQ(object->RefCountNums(), 2);
+
+  // This should destroy the function and release the object reference from the
+  // function on the task queue,
+  listener.Disconnect();
+  queue->BeginShutdown();
+  queue->AwaitShutdownAndIdle();
+  EXPECT_FALSE(isDestroyed);
+  EXPECT_EQ(object->RefCountNums(), 1);
+
+  // No one is holding reference to object, it should be destroyed
+  // immediately.
+  object = nullptr;
+  EXPECT_TRUE(isDestroyed);
+}
+
+TEST(MediaEventSource, ResetTargetAfterDisconnect)
+{
+  RefPtr<TaskQueue> queue =
+      TaskQueue::Create(GetMediaThreadPool(MediaThreadType::SUPERVISOR),
+                        "TestMediaEventSource ResetTargetAfterDisconnect");
+  MediaEventProducer<void> source;
+  MediaEventListener listener = source.Connect(queue, [] {});
+
+  // MediaEventListener::Disconnect eventually gives up its target
+  listener.Disconnect();
+  queue->AwaitIdle();
+
+  // `queue` should be the last reference to the TaskQueue, meaning that this
+  // Release destroys it.
+  EXPECT_EQ(queue.forget().take()->Release(), 0u);
+}
-- 
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