[testing] Temporarily skip flaky event engine tests. (#33136)

Based on flaky tests reported by dashboard:
https://dashboards.corp.google.com/stubby_team.grpc_flaky_dashboard#1318s66d4f

test/core/end2end/end2end_tests.h

@@ -806,6 +806,15 @@ extern bool g_is_fuzzing_core_e2e_tests;
   if (GetParam()->feature_mask & FEATURE_MASK_IS_MINSTACK) \
   GTEST_SKIP() << "Skipping test for minstack"
 
+#define SKIP_IF_USES_EVENT_ENGINE_CLIENT()     \
+  if (grpc_core::IsEventEngineClientEnabled()) \
+  GTEST_SKIP() << "Skipping test to prevent it from using EventEngine client"
+
+#define SKIP_IF_USES_EVENT_ENGINE_LISTENER()                            \
+  if (grpc_core::IsEventEngineListenerEnabled())                        \
+  GTEST_SKIP() << "Skipping test to prevent it from using EventEngine " \
+                  "listener"
+
 #define SKIP_IF_FUZZING() \
   if (g_is_fuzzing_core_e2e_tests) GTEST_SKIP() << "Skipping test for fuzzing"
 

test/core/end2end/tests/binary_metadata.cc

@@ -117,6 +117,7 @@ CORE_END2END_TEST(CoreEnd2endTest,
 
 CORE_END2END_TEST(CoreEnd2endTest,
                   BinaryMetadataServerHttp2FallbackClientHttp2Fallback) {
+  SKIP_IF_USES_EVENT_ENGINE_CLIENT();
   BinaryMetadata(*this, false, false);
 }
 

test/core/end2end/tests/cancel_after_accept.cc

@@ -76,6 +76,7 @@ CORE_END2END_TEST(CoreDeadlineTest, DeadlineAfterAccept) {
 }
 
 CORE_END2END_TEST(CoreClientChannelTest, DeadlineAfterAcceptWithServiceConfig) {
+  SKIP_IF_USES_EVENT_ENGINE_CLIENT();
   InitServer(ChannelArgs());
   InitClient(ChannelArgs().Set(
       GRPC_ARG_SERVICE_CONFIG,

test/core/end2end/tests/cancel_after_invoke.cc

@@ -109,6 +109,7 @@ void CancelAfterInvoke3(CoreEnd2endTest& test,
 }
 
 CORE_END2END_TEST(CoreEnd2endTest, CancelAfterInvoke6) {
+  SKIP_IF_USES_EVENT_ENGINE_LISTENER();
   CancelAfterInvoke6(*this, std::make_unique<CancelCancellationMode>());
 }
 
@@ -121,6 +122,7 @@ CORE_END2END_TEST(CoreEnd2endTest, CancelAfterInvoke4) {
 }
 
 CORE_END2END_TEST(CoreEnd2endTest, CancelAfterInvoke3) {
+  SKIP_IF_USES_EVENT_ENGINE_LISTENER();
   CancelAfterInvoke3(*this, std::make_unique<CancelCancellationMode>());
 }
 

test/core/end2end/tests/cancel_with_status.cc

@@ -81,6 +81,7 @@ CORE_END2END_TEST(CoreEnd2endTest, CancelWithStatus3) {
 }
 
 CORE_END2END_TEST(CoreEnd2endTest, CancelWithStatus4) {
+  SKIP_IF_USES_EVENT_ENGINE_LISTENER();
   auto c = NewClientCall("/foo").Timeout(Duration::Seconds(5)).Create();
   CoreEnd2endTest::IncomingMetadata server_initial_metadata;
   CoreEnd2endTest::IncomingStatusOnClient server_status;

test/core/end2end/tests/filtered_metadata.cc

@@ -72,6 +72,7 @@ void TestRequestResponseWithMetadataToBeFiltered(
 }
 
 CORE_END2END_TEST(CoreEnd2endTest, ContentLengthIsFiltered) {
+  SKIP_IF_USES_EVENT_ENGINE_CLIENT();
   TestRequestResponseWithMetadataToBeFiltered(*this, "content-length", "45");
 }
 

test/core/end2end/tests/retry_recv_initial_metadata.cc

@@ -35,6 +35,7 @@ namespace {
 // - first attempt receives initial metadata before trailing metadata,
 //   so no retry is done even though status was ABORTED
 CORE_END2END_TEST(RetryTest, RetryRecvInitialMetadata) {
+  SKIP_IF_USES_EVENT_ENGINE_CLIENT();
   InitServer(ChannelArgs());
   InitClient(ChannelArgs().Set(
       GRPC_ARG_SERVICE_CONFIG,

test/core/end2end/tests/simple_request.cc

@@ -98,7 +98,10 @@ void SimpleRequestBody(CoreEnd2endTest& test) {
             expected_calls);
 }
 
-CORE_END2END_TEST(CoreEnd2endTest, SimpleRequest) { SimpleRequestBody(*this); }
+CORE_END2END_TEST(CoreEnd2endTest, SimpleRequest) {
+  SKIP_IF_USES_EVENT_ENGINE_LISTENER();
+  SimpleRequestBody(*this);
+}
 
 CORE_END2END_TEST(CoreEnd2endTest, SimpleRequest10) {
   for (int i = 0; i < 10; i++) {