workaround testing.refAllDecls issue

Author: sjorsdonkers

src/engines/v8/v8.zig

@@ -355,6 +355,10 @@ pub const Env = struct {
     // Currently used for DOM nodes
     // - value Note: *parser.Node should be converted to dom/node.zig.Union to get the most precise type
     pub fn findOrAddValue(env: *Env, value: anytype) !v8.Value {
+        if (builtin.is_test) {
+            // std.testing.refAllDecls(@import("server.zig")); Causes `try ret.lookup(gen.Types);` to throw an error
+            return error.TestingNotSupported;
+        }
         comptime var ret: refl.Type = undefined;
         comptime {
             @setEvalBranchQuota(150_000); // Needed when this is called with a dom/node.zig.Union