diff --git a/test/advplParser.spec.ts b/test/advplParser.spec.ts
index cc2b53e..98c76ea 100644
--- a/test/advplParser.spec.ts
+++ b/test/advplParser.spec.ts
@@ -3,6 +3,7 @@ import { parseAdvpl , lexAdvpl, gettokenVocabulary } from "../src/parser/advplPa
 import { expect } from 'chai';
 import 'mocha';
 import { tokenMatcher } from "chevrotain";
+
 describe('Minimal lex', () => {
   it('should return 0 erros', () => {
     const lexingResult = lexAdvpl("function tste()\nreturn");
@@ -13,4 +14,65 @@ describe('Minimal lex', () => {
     expect(tokenMatcher(tokens[1], tokenVocabulary["Identifier"])).to.be.true;
 
   });
+});
+
+describe('Function with parameters', () => {
+  it('should return 0 erros', () => {
+    const lexingResult = lexAdvpl("function testing(param01,param02,param03)\nreturn nil");
+    expect(lexingResult.errors).to.be.empty;
+    let tokenVocabulary = gettokenVocabulary();
+    let tokens = lexingResult.tokens
+    expect(tokenMatcher(tokens[0], tokenVocabulary["FunctionToken"])).to.be.true;
+    expect(tokenMatcher(tokens[1], tokenVocabulary["Identifier"])).to.be.true;
+
+  });
+});
+
+describe('Main function with parameters', () => {
+  it('should return 0 erros', () => {
+    const lexingResult = lexAdvpl("main function testing(param01,param02)\nreturn nil");
+    expect(lexingResult.errors).to.be.empty;
+    let tokenVocabulary = gettokenVocabulary();
+    let tokens = lexingResult.tokens
+    expect(tokenMatcher(tokens[0], tokenVocabulary["MainToken"])).to.be.true;
+    expect(tokenMatcher(tokens[1], tokenVocabulary["FunctionToken"])).to.be.true;
+    expect(tokenMatcher(tokens[2], tokenVocabulary["Identifier"])).to.be.true;
+
+  });
+});
+
+describe('User function with parameters', () => {
+  it('should return 0 erros', () => {
+    const lexingResult = lexAdvpl("user function testing(param01,param02)\nreturn nil");
+    expect(lexingResult.errors).to.be.empty;
+    let tokenVocabulary = gettokenVocabulary();
+    let tokens = lexingResult.tokens
+    expect(tokenMatcher(tokens[0], tokenVocabulary["UserToken"])).to.be.true;
+    expect(tokenMatcher(tokens[1], tokenVocabulary["FunctionToken"])).to.be.true;
+    expect(tokenMatcher(tokens[2], tokenVocabulary["Identifier"])).to.be.true;
+
+  });
+});
+
+describe('Static function with parameters', () => {
+  it('should return 0 erros', () => {
+    const lexingResult = lexAdvpl("static function testing(param01,param02)\nreturn nil");
+    expect(lexingResult.errors).to.be.empty;
+    let tokenVocabulary = gettokenVocabulary();
+    let tokens = lexingResult.tokens
+    expect(tokenMatcher(tokens[0], tokenVocabulary["StaticToken"])).to.be.true;
+    expect(tokenMatcher(tokens[1], tokenVocabulary["FunctionToken"])).to.be.true;
+    expect(tokenMatcher(tokens[2], tokenVocabulary["Identifier"])).to.be.true;
+
+  });
+});
+
+describe('Start function name with number', () => {
+  it('should return 1 erros', () => {
+    const lexingResult = lexAdvpl("function 666func()\nreturn");
+    let tokenVocabulary = gettokenVocabulary();
+    let tokens = lexingResult.tokens
+    expect(tokenMatcher(tokens[0], tokenVocabulary["FunctionToken"])).to.be.true;
+    expect(tokenMatcher(tokens[1], tokenVocabulary["Identifier"])).to.be.false;
+  });
 });
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