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For a test, maybe we could copy this one but with the low power mode flag set?

You'll need to add the low power mode flag to WindowsConfigBuilder (here).

For a test, maybe we could copy this one but with the low power mode flag set?

flutter/engine/src/flutter/shell/platform/windows/flutter_windows_unittests.cc

Lines 411 to 423 in 4d8585d

	TEST_F(WindowsTest, GetGraphicsAdapter) {
	auto& context = GetContext();
	WindowsConfigBuilder builder(context);
	ViewControllerPtr controller{builder.Run()};
	ASSERT_NE(controller, nullptr);
	auto view = FlutterDesktopViewControllerGetView(controller.get());
	Microsoft::WRL::ComPtr<IDXGIAdapter> dxgi_adapter;
	dxgi_adapter = FlutterDesktopViewGetGraphicsAdapter(view);
	ASSERT_NE(dxgi_adapter, nullptr);
	DXGI_ADAPTER_DESC desc{};
	ASSERT_TRUE(SUCCEEDED(dxgi_adapter->GetDesc(&desc)));
	}

You'll need to add the low power mode flag to WindowsConfigBuilder (here).

Are those unittests actually running DXGI calls? Is this mocked or really returning underlying DXGI devices?