06 setembro 2007

CppUnit e Borland C++ Builder 6

Bem, como vocês já sabem, estou em uma nova empresa, a Audaces. Em princípio trabalharei com integração contínua, e estou no momento fazendo testes com o ambiente da Borland. É um mundo completamente novo para mim, e estou bastante animado com os resultados! C++!! Segue abaixo um pequeno(e simples) tutorial sobre como iniciar seus testes utilizando Borland C++ Builder 6.

Configuracao de ambiente para testes utilizando o CPPUnit e Borland C++ Builder 6 (BCB6)

Será apresentada a utilização do cppUnit para o C Builder através da criação de uma aplicação simples. Seguem os passos para tal:

1. Descompactar CPPUnitBCB6 (Ex: C:\CPPUnitBCB6)

2. Iniciar um projeto novo no BCB (File> New >Application)

2.1 Vincular ao projeto os Headers relativos ao CppUnit.
Faça isso adicionando os diretórios ao projeto em "Project> Options> Directories/Conditionals >Include path"
Selecione os diretórios:


2.2 Remover o formulário inicial (Form1) em "Project> Remove from Project...> Unit1.cpp"

3. Adicione ao projeto as bibliotecas do CppUnit (podem ser copiados para o diretório raiz do projeto de exemplo):


4. Crie uma classe de testes Simples:

A primeira classe a ser criada será chamada de FirstTest. Iniciaremos por seu Header, que deve extender a classe TestCase. É necessário declarar os métodos setUp() e tearDown() para que o funcionamento ocorra normalmente.

#ifndef FIRST_TEST_H
#define FIRST_TEST_H

#include "TestCase.h"
#include "TestCaller.h"

class FirstTest: public TestCase
FirstTest(std::string name);
void setUp();
void tearDown();
static Test *suite();
void testAssertTrue();
void testAssertFalse();
void testFalhara();
void testAssertMaisUmExemplo();


typedef TestCaller FirstTestCaller;

Abaixo segue a implementação dessa classe. FirstTest.cpp
#include "FirstTest.h"
#include "TestSuite.h"

FirstTest::FirstTest(std::string name): TestCase(name) {

void FirstTest::setUp() { }

void FirstTest::tearDown() { }
Test* FirstTest::suite() {
// All tests have to be explicity added to TestSuite to be executed
TestSuite *suite ;
suite = new TestSuite("nameFirstTest");
suite->addTest(new FirstTestCaller("assert True", &FirstTest::testAssertTrue));
suite->addTest(new FirstTestCaller("assert False", &FirstTest::testAssertFalse));
suite->addTest(new FirstTestCaller("teste que falha", &FirstTest::testFalhara));
suite->addTest(new FirstTestCaller("teste equals", &FirstTest::testAssertMaisUmExemplo));
return (suite);

void FirstTest::testAssertTrue()
assert( true );

void FirstTest::testAssertFalse()
assert( !false );

void FirstTest::testFalhara()
assert( false );

void FirstTest::testAssertMaisUmExemplo()
assertDoublesEqual(0, 0, 0);

6. Testando o funcionamento do CppUnit:

O método suite() serve para que se possa adicionar todos os métodos de testes que a classe possui e que devem ser executados. Caso um método nao seja adicionado ao TestSuite neste método, ele não serpa executado.
Edite o código inicial do projeto ("Project> View Source"), adicionando a chamativa ao CppUnit após a compilar a aplicação. Exemplo exemplo.cpp:
#pragma hdrstop

#include "ITestRunner.h"
#include "FirstTest.h"
ITestRunner runner;



catch (Exception &exception)
catch (...)
throw Exception("");
catch (Exception &exception)
return 0;

Pressione F9. Uma ferramenta gráfica aparecerá e você terá como visualizar todos os testes escritos na classe FirstTest. Clique em run e divirta-se.
Obs: propositalmente neste tutorial eu inseri um teste que falhará, para que você possa ver o funcionamento da ferramenta...


Um comentário:

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