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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/accessibility/platform/provide_ax_platform_for_tests.h"
#include "build/build_config.h"
#if BUILDFLAG(IS_WIN)
#include <tuple>
#include "ui/accessibility/platform/ax_platform_node_win.h"
#else
#include "ui/accessibility/platform/ax_platform_node_base.h"
#endif
namespace ui {
ProvideAXPlatformForTests::ProvideAXPlatformForTests() {
ax_platform_.emplace();
}
ProvideAXPlatformForTests::~ProvideAXPlatformForTests() {
// exo::wayland tests call `RUN_ALL_TESTS()` from a different thread than the
// one that the bulk of the work is done on.
ax_platform_->DetachFromThread();
}
void ProvideAXPlatformForTests::OnTestEnd(
const ::testing::TestInfo& test_info) {
// exo::wayland tests call `RUN_ALL_TESTS()` from a different thread than the
// one that the bulk of the work is done on.
ax_platform_->DetachFromThread();
ax_platform_.emplace();
// Dear reader: If your test is failing here, it is because the test is either
// leaking UX objects (e.g., Views, Widgets, etc) or is using accessibility
// APIs that are leaking AXPlatformNode instances.
#if BUILDFLAG(IS_WIN)
auto [instance_count, dormant_count, live_count, ghost_count] =
ui::AXPlatformNodeWin::ResetCountsForTesting();
EXPECT_EQ(ghost_count, 0U)
<< "This test is leaking COM interface references. If the test is not "
"explicitly using facilities such as IAccessible, then you may have "
"just found a bug in ui/accessibility/platform. Contact a member of "
"ui/accessibility/OWNERS for guidance.";
#elif BUILDFLAG(IS_LINUX)
// The `AuraLinuxApplication` singleton is never destroyed, so one node is
// leaked in all unit tests that create a ViewAXPlatformNodeDelegate. It's not
// possible to distinguish between a leak of an arbitrary node and a leak of
// the AuraLinuxApplication's node, so there is no leak checking at all.
// TODO(accessibility): Consider moving AuraLinuxApplication into AXPlatform
// in some way so that it can be properly destroyed at shutdown.
// TODO(accessibility): Investigate platform node leaks on Linux; see
// https://crrev.com/c/chromium/src/+/6316732?checksPatchset=10&tab=checks.
size_t instance_count = 0;
#else
size_t instance_count =
ui::AXPlatformNodeBase::ResetInstanceCountForTesting();
#endif
EXPECT_EQ(instance_count, 0U)
<< "This test is leaking UX objects (e.g., Views or Widgets). This is "
"often caused by ownership issues with Widgets and NativeWidgets";
}
} // namespace ui
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