rpc/apimiddleware: Test all paths can be created (#13073)

beacon-chain/rpc/apimiddleware/BUILD.bazel

@@ -32,6 +32,7 @@ go_test(
     srcs = [
         "custom_handlers_test.go",
         "custom_hooks_test.go",
+        "endpoint_factory_test.go",
         "structs_marshalling_test.go",
     ],
     embed = [":go_default_library"],

beacon-chain/rpc/apimiddleware/endpoint_factory_test.go

@@ -0,0 +1,17 @@
+package apimiddleware_test
+
+import (
+	"testing"
+
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/apimiddleware"
+	"github.com/prysmaticlabs/prysm/v4/testing/require"
+)
+
+func TestBeaconEndpointFactory_AllPathsRegistered(t *testing.T) {
+  f := &apimiddleware.BeaconEndpointFactory{}
+
+  for _, p := range f.Paths() {
+    _, err := f.Create(p)
+    require.NoError(t, err, "failed to register %s", p)
+  }
+}