chromium/net/third_party/quiche/src/quiche/http2/adapter/window_manager_test.cc

#include "quiche/http2/adapter/window_manager.h"

#include <algorithm>
#include <list>

#include "absl/functional/bind_front.h"
#include "quiche/http2/test_tools/http2_random.h"
#include "quiche/common/platform/api/quiche_expect_bug.h"
#include "quiche/common/platform/api/quiche_test.h"

namespace http2 {
namespace adapter {
namespace test {

// Use the peer to access private vars of WindowManager.
class WindowManagerPeer { … };

namespace {

class WindowManagerTest : public quiche::test::QuicheTest { … };

// A few no-op calls.
TEST_F(WindowManagerTest, NoOps) { … }

// This test verifies that WindowManager does not notify its listener when data
// is only buffered, and never flushed.
TEST_F(WindowManagerTest, DataOnlyBuffered) { … }

// This test verifies that WindowManager does notify its listener when data is
// buffered and subsequently flushed.
TEST_F(WindowManagerTest, DataBufferedAndFlushed) { … }

// Window manager should avoid window underflow.
TEST_F(WindowManagerTest, AvoidWindowUnderflow) { … }

// Window manager should GFE_BUG and avoid buffered underflow.
TEST_F(WindowManagerTest, AvoidBufferedUnderflow) { … }

// This test verifies that WindowManager notifies its listener when window is
// consumed (data is ignored or immediately dropped).
TEST_F(WindowManagerTest, WindowConsumed) { … }

// This test verifies that WindowManager notifies its listener when the window
// size limit is increased.
TEST_F(WindowManagerTest, ListenerCalledOnSizeUpdate) { … }

// This test verifies that when data is buffered and then the limit is
// decreased, WindowManager only notifies the listener once any outstanding
// window has been consumed.
TEST_F(WindowManagerTest, WindowUpdateAfterLimitDecreased) { … }

// For normal behavior, we only call MaybeNotifyListener() when data is
// flushed. But if window runs out entirely, we still need to call
// MaybeNotifyListener() to avoid becoming artificially blocked when data isn't
// being flushed.
TEST_F(WindowManagerTest, ZeroWindowNotification) { … }

TEST_F(WindowManagerTest, OnWindowSizeLimitChange) { … }

TEST_F(WindowManagerTest, NegativeWindowSize) { … }

TEST_F(WindowManagerTest, IncreaseWindow) { … }

// This test verifies that when the constructor option is specified,
// WindowManager does not update its internal accounting of the flow control
// window when notifying the listener.
TEST(WindowManagerNoUpdateTest, NoWindowUpdateOnListener) { … }

// This test verifies that when the constructor option is specified,
// WindowManager uses the provided ShouldWindowUpdateFn to determine when to
// notify the listener.
TEST(WindowManagerShouldUpdateTest, CustomShouldWindowUpdateFn) { … }

}  // namespace
}  // namespace test
}  // namespace adapter
}  // namespace http2