feat(policy-test): conditionally compile experimental type tests (#13891)

Our policy controller tests execute tests for resources that are not part of the
stable gateway-api distribution. To support testing only the stable API, this
change introduces a new `gateway-api-experimental` feature that enables
compilation of TCPRoute and TLSRoute tests and utilities.

This features is enabled by default, as that is the current behavior. This will
be consumed by CI in followup changes.

policy-test/Cargo.toml

@@ -5,6 +5,10 @@ edition = "2021"
 license = "Apache-2.0"
 publish = false
 
+[features]
+default = ["gateway-api-experimental"]
+gateway-api-experimental = []
+
 [dependencies]
 anyhow = "1"
 bytes = "1"

policy-test/src/lib.rs

@@ -293,6 +293,7 @@ pub async fn await_grpc_route_status(
     route_status
 }
 
+#[cfg(feature = "gateway-api-experimental")]
 // Waits until an TlsRoute with the given namespace and name has a status set
 // on it, then returns the generic route status representation.
 pub async fn await_tls_route_status(
@@ -316,6 +317,7 @@ pub async fn await_tls_route_status(
     route_status
 }
 
+#[cfg(feature = "gateway-api-experimental")]
 // Waits until an TcpRoute with the given namespace and name has a status set
 // on it, then returns the generic route status representation.
 pub async fn await_tcp_route_status(

policy-test/src/outbound_api.rs

@@ -118,6 +118,7 @@ pub fn grpc_routes(config: &grpc::outbound::OutboundPolicy) -> &[grpc::outbound:
     }
 }
 
+#[cfg(feature = "gateway-api-experimental")]
 #[track_caller]
 pub fn tls_routes(config: &grpc::outbound::OutboundPolicy) -> &[grpc::outbound::TlsRoute] {
     let kind = config
@@ -137,6 +138,7 @@ pub fn tls_routes(config: &grpc::outbound::OutboundPolicy) -> &[grpc::outbound::
     }
 }
 
+#[cfg(feature = "gateway-api-experimental")]
 #[track_caller]
 pub fn tcp_routes(config: &grpc::outbound::OutboundPolicy) -> &[grpc::outbound::OpaqueRoute] {
     let kind = config

policy-test/src/test_route.rs

@@ -4,7 +4,9 @@ use linkerd_policy_controller_k8s_api::{
     self as k8s, gateway, policy, Condition, Resource as _, ResourceExt,
 };
 
-use crate::outbound_api::{detect_http_routes, grpc_routes, tcp_routes, tls_routes};
+use crate::outbound_api::{detect_http_routes, grpc_routes};
+#[cfg(feature = "gateway-api-experimental")]
+use crate::outbound_api::{tcp_routes, tls_routes};
 
 pub trait TestRoute:
     kube::Resource<Scope = kube::core::NamespaceResourceScope, DynamicType: Default>
@@ -482,6 +484,7 @@ impl TestRoute for gateway::GRPCRoute {
     }
 }
 
+#[cfg(feature = "gateway-api-experimental")]
 impl TestRoute for gateway::TLSRoute {
     type Route = outbound::TlsRoute;
     type Backend = outbound::tls_route::RouteBackend;
@@ -626,6 +629,7 @@ impl TestRoute for gateway::TLSRoute {
     }
 }
 
+#[cfg(feature = "gateway-api-experimental")]
 impl TestRoute for gateway::TCPRoute {
     type Route = outbound::OpaqueRoute;
     type Backend = outbound::opaque_route::RouteBackend;

policy-test/tests/admit_tcp_route.rs

@@ -1,3 +1,5 @@
+#![cfg(feature = "gateway-api-experimental")]
+
 use linkerd_policy_controller_k8s_api::{self as api, gateway};
 use linkerd_policy_test::admission;
 

policy-test/tests/admit_tls_route.rs

@@ -1,3 +1,5 @@
+#![cfg(feature = "gateway-api-experimental")]
+
 use linkerd_policy_controller_k8s_api::{self as api, gateway};
 use linkerd_policy_test::admission;