test: update all parser test cases

packages/parser/tests/test-util.ts

@@ -1,5 +1,7 @@
-import type { ParseResult } from 'langium';
+import type { LangiumParser, ParseResult } from 'langium';
 import { expect, vi } from 'vitest';
+import type { Info, InfoServices, Pie, PieServices } from '../src/language/index.js';
+import { createInfoServices, createPieServices } from '../src/language/index.js';
 
 const consoleMock = vi.spyOn(console, 'log').mockImplementation(() => undefined);
 
@@ -9,10 +11,32 @@ const consoleMock = vi.spyOn(console, 'log').mockImplementation(() => undefined)
  *
  * @param result - the result `parse` function.
  */
-export function noErrorsOrAlternatives(result: ParseResult) {
+export function expectNoErrorsOrAlternatives(result: ParseResult) {
   expect(result.lexerErrors).toHaveLength(0);
   expect(result.parserErrors).toHaveLength(0);
 
   expect(consoleMock).not.toHaveBeenCalled();
   consoleMock.mockReset();
 }
+
+const infoServices: InfoServices = createInfoServices().Info;
+const infoParser: LangiumParser = infoServices.parser.LangiumParser;
+export function createInfoTestServices() {
+  const parse = (input: string) => {
+    return infoParser.parse<Info>(input);
+  };
+
+  return { services: infoServices, parse };
+}
+export const infoParse = createInfoTestServices().parse;
+
+const pieServices: PieServices = createPieServices().Pie;
+const pieParser: LangiumParser = pieServices.parser.LangiumParser;
+export function createPieTestServices() {
+  const parse = (input: string) => {
+    return pieParser.parse<Pie>(input);
+  };
+
+  return { services: pieServices, parse };
+}
+export const pieParse = createPieTestServices().parse;