clang tidy: part of fixes of test only code

[wbpcode]

Commit Message: clang tidy: part of fixes of test only code
Additional Description:

Test only clang tidy issue fixes. Not all because there are tooooooo much problems and even AI is not sound enough for that.

Risk Level: low.
Testing: n/a.
Docs Changes: n/a.
Release Notes: n/a.
Platform Specific Features: n/a.

[Copilot]

Pull request overview

This PR applies a broad set of clang-tidy-driven cleanups across Envoy’s test-only code, aiming to reduce warnings and modernize patterns without changing production behavior.

Changes:

• Refactors various test fixtures/utilities for clang-tidy compliance (initialization, overrides, loop style, naming).
• Introduces a small test helper for intentionally out-of-range enum casts (uncheckedEnumCastForTest).
• Updates benchmarks/tests to avoid undefined behavior patterns (e.g., PANIC, StrAppend, brace-init, etc.).

Reviewed changes

Copilot reviewed 180 out of 180 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
test/test_common/wasm_base.h	Remove redundant {} member init
test/test_common/test_runtime.h	Use THROW_IF_NOT_OK_REF
test/test_common/simulated_time_system.h	Initialize atomic to 0
test/test_common/network_utility.h	Remove redundant {} member init
test/test_common/logging.h	Add NOLINT for naming
test/test_common/environment.cc	Prefer .empty()
test/test_common/enum_test_utils.h	Add helper for unsafe enum casts
test/test_common/BUILD	Export new header + add Abseil dep
test/server/utils_test.cc	Use enum test cast helper
test/server/connection_handler_test.cc	Remove redundant {} member init
test/server/cgroup_cpu_util_test.cc	Remove unused gtest usings
test/server/admin/stats_handler_speed_test.cc	Use PANIC; rename benchmark
test/mocks/upstream/host.h	Remove redundant {} member init
test/mocks/upstream/host.cc	Use brace-init for OptRef
test/mocks/thread_local/mocks.h	Add NOLINT for loop conversion
test/mocks/stats/mocks.h	Add NOLINT for naming
test/mocks/ssl/mocks.h	Remove redundant {} member init
test/mocks/server/hot_restart.cc	Remove unused gtest using
test/mocks/server/health_checker_factory_context.h	Remove redundant {} member init
test/mocks/network/mocks.h	Remove redundant {} member init
test/integration/udp_tunneling_integration_test.cc	Remove redundant {} member init
test/integration/tcp_proxy_integration_test.cc	Add braces around loop
test/integration/ssl_utility.h	Remove redundant {} member init
test/integration/quic_http_integration_test.cc	Rename params-to-string fns
test/integration/overload_integration_test.cc	Rename param + reflow signature
test/integration/listener_lds_integration_test.cc	Remove redundant {} member init
test/integration/listener_extension_discovery_integration_test.cc	Avoid copy in range-for
test/integration/filters/tee_filter.h	Remove redundant {} member init
test/integration/filters/async_upstream_filter.cc	Add override on dtor
test/integration/filter_manager_integration_test.cc	Remove redundant {} member init
test/integration/fake_upstream.h	Initialize atomic to 0
test/integration/cluster_filter_integration_test.cc	Remove redundant {} member init
test/integration/base_integration_test.h	Remove redundant {} member init
test/integration/async_round_robin_lb.cc	Remove redundant virtual
test/integration/ads_integration.h	Avoid calling param accessors in ctor init
test/integration/ads_integration_test.cc	Default ctor
test/fuzz/fuzz_runner.cc	Add include + NOLINT loop convert
test/extensions/upstreams/http/udp/config_test.cc	Remove unused gtest using
test/extensions/upstreams/http/generic/config_test.cc	Use enum test cast helper
test/extensions/transport_sockets/tls/cert_validator/spiffe/spiffe_validator_test.cc	Prefer .empty(); remove redundant init
test/extensions/transport_sockets/alts/alts_channel_pool_test.cc	Use <cstdlib>
test/extensions/tracers/opentelemetry/samplers/sampler_test.cc	Remove redundant {} member init
test/extensions/tracers/opentelemetry/resource_detectors/static/static_config_resource_detector_integration_test.cc	Prefer .empty()
test/extensions/tracers/opentelemetry/operation_name_test.cc	Remove redundant {} member init
test/extensions/tracers/dynamic_modules/tracer_test.cc	Remove unused gtest using
test/extensions/tracers/datadog/span_test.cc	Rename accessor; brace-init tracer
test/extensions/tracers/datadog/agent_http_client_test.cc	Use enum test cast helper
test/extensions/stats_sinks/open_telemetry/open_telemetry_impl_test.cc	Add braces; remove redundant init
test/extensions/stats_sinks/open_telemetry/open_telemetry_benchmark.cc	Rename benchmark functions
test/extensions/resource_monitors/cgroup_memory/config_test.cc	Remove unused gtest using
test/extensions/rate_limit_descriptors/expr/config_test.cc	Use THROW_IF_NOT_OK_REF
test/extensions/network/dns_resolver/benchmark/dns_resolver_benchmark.cc	Rename benchmark functions
test/extensions/load_balancing_policies/common/load_balancer_impl_base_test.h	NOLINT enum out-of-range
test/extensions/load_balancing_policies/client_side_weighted_round_robin/client_side_weighted_round_robin_lb_test.cc	Add braces around if/else
test/extensions/key_value/file_based/key_value_store_test.cc	Remove redundant {} member init
test/extensions/http/credential_injector/oauth2/credential_injector_oauth_integration_test.cc	Remove redundant {} member init
test/extensions/grpc_credentials/file_based_metadata/integration_test.cc	Remove redundant {} member init
test/extensions/filters/udp/dns_filter/dns_filter_access_log_test.cc	Use brace-init return
test/extensions/filters/network/thrift_proxy/router_test.cc	Remove redundant {} member init
test/extensions/filters/network/thrift_proxy/app_exception_impl_test.cc	Add NOLINT for copy-init
test/extensions/filters/network/tcp_bandwidth_limit/filter_test.cc	Use make_unique; add include
test/extensions/filters/network/reverse_tunnel/integration_test.cc	Return {}
test/extensions/filters/network/reverse_tunnel/filter_unit_test.cc	Modernize loops; simplify ctor
test/extensions/filters/network/redis_proxy/redis_proxy_integration_test.cc	Use const ref alias
test/extensions/filters/network/rbac/filter_test.cc	Default ctor
test/extensions/filters/network/http_connection_manager/config_test_base.h	Create local config var
test/extensions/filters/network/http_connection_manager/config_filter_dependencies_test.cc	Name local config instance
test/extensions/filters/network/generic_proxy/router/router_test.cc	Remove redundant {} member init
test/extensions/filters/network/ext_proc/ext_proc_test.cc	Remove unused gtest using
test/extensions/filters/network/ext_proc/ext_proc_integration_test.cc	Range-for over filters
test/extensions/filters/network/ext_proc/config_test.cc	Default ctor
test/extensions/filters/network/dubbo_proxy/router_test.cc	Remove redundant {} member init
test/extensions/filters/network/dubbo_proxy/app_exception_test.cc	Add NOLINT for copy-init
test/extensions/filters/listener/tls_inspector/tls_inspector_ja4_test.cc	Remove unused gtest usings
test/extensions/filters/listener/tls_inspector/ja4_fingerprint_test.cc	Remove unused gtest usings
test/extensions/filters/http/router/config_test.cc	Use brace-init return
test/extensions/filters/http/rbac/rbac_filter_test.cc	Remove redundant {} member init
test/extensions/filters/http/rate_limit_quota/integration_test.cc	Add braces; remove redundant init
test/extensions/filters/http/rate_limit_quota/filter_persistence_test.cc	Remove redundant init
test/extensions/filters/http/rate_limit_quota/client_test.cc	Rename types; add braces; refactors
test/extensions/filters/http/rate_limit_quota/client_test_utils.h	Range-for; add braces; remove redundant init
test/extensions/filters/http/proto_api_scrubber/filter_benchmark_test.cc	Rename benchmarks; add braces
test/extensions/filters/http/on_demand/odcds_integration_test.cc	Rename helper; simplify ctor
test/extensions/filters/http/oauth2/oauth_integration_test.cc	NOLINT for return braced-init
test/extensions/filters/http/mcp/mcp_json_parser_test.cc	Remove unused gtest usings
test/extensions/filters/http/grpc_field_extraction/message_converter/message_converter_test.cc	Use std::ranges::reverse_view
test/extensions/filters/http/gcp_authn/gcp_authn_filter_integration_test.cc	Remove redundant init
test/extensions/filters/http/file_server/absl_status_to_http_status_test.cc	Enum helper include; adjust expectations
test/extensions/filters/http/ext_proc/streaming_integration_test.cc	Remove redundant init
test/extensions/filters/http/ext_proc/http_client/http_client_test.cc	Remove redundant init
test/extensions/filters/http/ext_proc/http_client/ext_proc_http_integration_test.cc	Rename params-to-string; remove redundant init
test/extensions/filters/http/ext_proc/filter_test.cc	Rename enum constants; update uses
test/extensions/filters/http/ext_proc/ext_proc_misc_test.cc	Rename helper; remove redundant init
test/extensions/filters/http/ext_proc/ext_proc_misc_integration_test.cc	Rename helper; remove redundant init
test/extensions/filters/http/ext_proc/ext_proc_integration_test.cc	Use StrAppend
test/extensions/filters/http/ext_proc/ext_proc_integration_common.h	NOLINT naming; remove redundant init
test/extensions/filters/http/ext_proc/ext_proc_integration_common.cc	Use StrAppend
test/extensions/filters/http/ext_proc/ext_proc_grpc_fuzz.h	Remove redundant init
test/extensions/filters/http/ext_proc/ext_proc_full_duplex_integration_test.cc	Use StrAppend
test/extensions/filters/http/ext_proc/ext_proc_benchmark_test.cc	Remove redundant init
test/extensions/filters/http/ext_authz/logging_test_filter.cc	Rename helper; update call
test/extensions/filters/http/ext_authz/ext_authz_test.cc	Default ctor; rename params-to-string
test/extensions/filters/http/ext_authz/ext_authz_integration_test.cc	Remove redundant init
test/extensions/filters/http/ext_authz/ext_authz_fuzz_lib.cc	Avoid proto copy
test/extensions/filters/http/dynamic_forward_proxy/test_resolver.h	Add override on dtor
test/extensions/filters/http/dynamic_forward_proxy/proxy_filter_test.cc	Remove redundant virtual
test/extensions/filters/http/decompressor/decompressor_filter_integration_test.cc	Remove redundant init
test/extensions/filters/http/common/mock.cc	Prefer .empty()
test/extensions/filters/http/common/fuzz/uber_filter.h	Remove redundant init
test/extensions/filters/http/cache/cache_filter_logging_info_test.cc	Use enum test cast helper
test/extensions/filters/http/cache/cache_entry_utils_test.cc	Use enum test cast helper
test/extensions/filters/http/cache_v2/http_cache_implementation_test_common.cc	Remove unused usings
test/extensions/filters/http/cache_v2/config_test.cc	Compact string return
test/extensions/filters/http/cache_v2/cache_entry_utils_test.cc	Use enum test cast helper
test/extensions/filters/http/bandwidth_share/fair_token_bucket_impl_test.cc	Add override; modernize loops
test/extensions/filters/common/ext_authz/ext_authz_grpc_impl_test.cc	Use {} for optional unset
test/extensions/filters/common/expr/evaluator_test.cc	Remove unused gtest using
test/extensions/dynamic_modules/listener/abi_impl_test.cc	Brace-init IoCall result
test/extensions/config_subscription/grpc/sotw_subscription_state_test.cc	Use enum test cast helper
test/extensions/config_subscription/grpc/new_grpc_mux_impl_test.cc	Remove redundant init
test/extensions/compression/zstd/decompressor/zstd_decompressor_impl_test.cc	Remove redundant init
test/extensions/compression/gzip/decompressor/zlib_decompressor_impl_test.cc	Remove redundant init
test/extensions/common/wasm/test_data/test_cpp.cc	Use enum test cast helper
test/extensions/common/redis/cluster_refresh_manager_test.cc	Remove redundant init (atomics)
test/extensions/common/dynamic_forward_proxy/dns_cache_impl_test.cc	Prefer if (ptr)
test/extensions/common/dubbo/codec_test.cc	Use enum test cast helper
test/extensions/common/aws/eventstream/eventstream_parser_test.cc	Add braces; NOLINT return init
test/extensions/common/aws/credential_providers/iam_roles_anywhere_credentials_provider_test.cc	Prefer .empty()
test/extensions/clusters/redis/redis_cluster_lb_test.cc	Avoid move of shared_ptr
test/extensions/clusters/composite/cluster_test.cc	Use THROW_IF_NOT_OK_REF
test/extensions/clusters/common/logical_host_integration_test.cc	Rename Address struct
test/extensions/bootstrap/wasm/wasm_test.cc	Remove redundant init
test/extensions/bootstrap/wasm/test_data/speed_cpp.cc	Prefer .empty()
test/extensions/bootstrap/reverse_tunnel/upstream_socket_interface/reverse_tunnel_acceptor_extension_test.cc	Use make_unique
test/extensions/bootstrap/reverse_tunnel/downstream_socket_interface/reverse_connection_resolver_test.cc	Remove unused gtest usings
test/extensions/bootstrap/reverse_tunnel/downstream_socket_interface/reverse_connection_io_handle_test.cc	Prefer .empty()
test/extensions/bootstrap/reverse_tunnel/downstream_socket_interface/reverse_connection_address_test.cc	Brace-init return; NOLINT copy-init
test/extensions/bootstrap/reverse_tunnel/downstream_socket_interface/rc_connection_wrapper_test.cc	Prefer .empty()
test/extensions/access_loggers/stats/stats_test.cc	Add braces
test/extensions/access_loggers/stats/stats_speed_test.cc	Add braces; rename benchmarks
test/extensions/access_loggers/open_telemetry/otlp_log_utils_test.cc	Remove unused gtest using
test/extensions/access_loggers/fluentd/fluentd_access_log_impl_test.cc	NOLINT return init
test/common/upstream/transport_socket_input_test.cc	Remove unused gtest using
test/common/upstream/health_checker_impl_test.cc	Remove redundant init
test/common/upstream/health_check_fuzz_test_utils.h	Remove redundant init
test/common/tls/test_private_key_method_provider.h	Remove redundant init
test/common/tls/integration/ssl_integration_test_base.h	NOLINT naming
test/common/tls/cert_validator/test_common.h	Remove redundant init
test/common/tcp/conn_pool_test.cc	Remove redundant init
test/common/tcp/async_tcp_client_impl_test.cc	Add override on dtor
test/common/tcp_proxy/tcp_proxy_test.cc	Use char literals
test/common/tcp_proxy/tcp_proxy_test_base.h	Remove redundant init
test/common/stats/refcount_ptr_test.cc	Fix shared_ptr copy
test/common/runtime/runtime_impl_test.cc	Use THROW_IF_NOT_OK_REF
test/common/quic/quic_stat_names_test.cc	Use enum test cast helper
test/common/quic/envoy_quic_proof_verifier_test.cc	Use THROW_IF_NOT_OK_REF
test/common/quic/envoy_quic_proof_source_test.cc	Use THROW_IF_NOT_OK_REF
test/common/quic/envoy_quic_h3_fuzz_test.cc	Remove redundant init
test/common/network/udp_listener_impl_test.cc	Use StrAppend
test/common/network/udp_listener_impl_batch_writer_test.cc	Prefer .empty()
test/common/network/lc_trie_ip_list_speed_test.cc	Rename benchmarks; add DoNotOptimize
test/common/network/io_socket_handle_impl_benchmark_test.cc	Rename benchmarks; add DoNotOptimize
test/common/network/connection_impl_test.cc	Simplify ctor
test/common/network/address_impl_test.cc	Use brace-init return
test/common/jwt/verify_jwk_rsa_test.cc	Add override on SetUp
test/common/jwt/verify_jwk_rsa_pss_test.cc	Add override on SetUp
test/common/jwt/verify_jwk_okp_test.cc	Add override on SetUp
test/common/jwt/verify_jwk_hmac_test.cc	Add override on SetUp
test/common/jwt/verify_jwk_ec_test.cc	Add override on SetUp
test/common/jwt/simple_lru_cache_test.cc	Modernize ownership/loops; rename helper
test/common/jwt/jwt_test.cc	Range-for over references
test/common/json/json_rpc_field_extractor_test.cc	Avoid virtual call in ctor
test/common/io/io_uring_worker_factory_impl_test.cc	Remove redundant init
test/common/io/io_uring_impl_test.cc	Remove redundant init
test/common/http/session_idle_list_test.cc	Rename accessor; add override
test/common/http/http_server_properties_cache_impl_test.cc	Fix paramization/ownership
test/common/http/codes_test.cc	Use enum test cast helper
test/common/common/linked_object_speed_test.cc	Add DoNotOptimize
test/common/buffer/watermark_buffer_test.cc	Use string overload
test/common/buffer/buffer_test.cc	Reserve vector capacity