Add enum message parsing

src/app/proto-definition.service.spec.ts

@@ -2,6 +2,7 @@ import { TestBed } from '@angular/core/testing';
 
 import { provideExperimentalZonelessChangeDetection } from '@angular/core';
 import {
+  EnumMessage,
   ListMessage,
   MapMessage,
   MessageTypeEnum,
@@ -27,12 +28,17 @@ message Test {
   map<string, string> hello8 = 8;
   ReferenceMessage hello9 = 9;
   NestedMessage hello10 = 10;
+  EnumTest enum_test = 11;
 }
 
 message ReferenceMessage {
   string test = 1; 
 }
 
+enum EnumTest {
+  Hello = 0;
+}
+
 `;
 
 describe('TestService', () => {
@@ -51,7 +57,7 @@ describe('TestService', () => {
 
     expect(converted.name).toBe('Test');
 
-    expect(converted.values.length).toBe(10);
+    expect(converted.values.length).toBe(11);
     checkNameAndType(converted, 'hello', MessageTypeEnum.String);
     checkNameAndType(converted, 'hello2', MessageTypeEnum.Numeric);
     checkNameAndType(converted, 'hello3', MessageTypeEnum.Numeric);
@@ -62,6 +68,7 @@ describe('TestService', () => {
     checkNameAndType(converted, 'hello8', MessageTypeEnum.Map);
     checkNameAndType(converted, 'hello9', MessageTypeEnum.Object);
     checkNameAndType(converted, 'hello10', MessageTypeEnum.Object);
+    checkNameAndType(converted, 'enumTest', MessageTypeEnum.Enum);
 
     const listMessage = converted.values[6].configuration as ListMessage;
     expect(listMessage.subConfiguration.type).toBe(MessageTypeEnum.String);
@@ -86,7 +93,9 @@ describe('TestService', () => {
     expect(nestedNestedMessage.configuration.type).toBe(MessageTypeEnum.String);
     expect(nestedNestedMessage.name).toBe('nested');
 
-    // TODO: Enum type
+    const enumMessage = converted.values[10].configuration as EnumMessage;
+    expect(enumMessage.options.length).toBe(1);
+    expect(enumMessage.options[0]).toBe('Hello');
   });
 });