Add tests for parser references and nesting functionality

Author: Inplex-sys

test/composite-parser.test.ts

@@ -654,6 +654,15 @@ function compositeParserTests(
             it("should be able to refer to other parsers by name", () => {
                 const parser = Parser.start().namely("self");
 
+                // @ts-ignore
+                const stop = Parser.start().namely("stop");
+
+                // @ts-ignore
+                const twoCells = Parser.start()
+                    .namely("twoCells")
+                    .nest("left", { type: "self" })
+                    .nest("right", { type: "stop" });
+
                 parser.uint8("type").choice("data", {
                     tag: "type",
                     choices: {