Testes em aplicações Java EE com Arquillian

cd && git clone http://github.com/paulojeronimo/javaee-tutorial-testes
cd javaee-tutorial-testes

vagrant plugin install vagrant-vbguest

vagrant up

mkdir -p ~/javaee-tutorial-testes.backup/javaee-ambiente.instaladores
cp ~/Downloads/jboss-eap-6.3.0.* !$

cd && git clone http://github.com/paulojeronimo/javaee-tutorial-testes
cd javaee-tutorial-testes

cp config.exemplo config

./instalar

vagrant ssh -c /vagrant/instalar

vagrant vbguest --do install
vagrant reload

cd && mkdir -p exemplos/tdd
cd !$

cat > MatematicaTest.java <<EOF
public class MatematicaTest {
    public void testFatorial() {
    }

    public void testFibonacci() {
    }

    public static void main(String args[]) {
        MatematicaTest mt = new MatematicaTest();
        try {
            mt.testFatorial();
            System.out.println("testFatorial() passou!");
            mt.testFibonacci();
            System.out.println("testFibonacci() passou!");
        } catch (AssertionFailedError e) {
            System.out.println("Teste falhou:");
            e.printStackTrace();
        } catch (Exception e) {
            System.out.println("Teste provocou exceção:");
            e.printStackTrace();
        }
    }
}
EOF

javac MatematicaTest.java

cat > AssertionFailedError.java <<EOF
public class AssertionFailedError extends Error {
    public AssertionFailedError(String message) {
        super(message);
    }
}
EOF
!-2

patch MatematicaTest.java << EOF
--- MatematicaTest.java.1   2015-02-08 18:15:02.007920683 -0200
+++ MatematicaTest.java 2015-02-08 18:27:09.016219866 -0200
@@ -1,10 +1,27 @@
 public class MatematicaTest {
+    public static void fail(String message) {
+        throw new AssertionFailedError(message);
+    }
+
     public void testFatorial() {
+        testFatorialComArgumentoNegativo();
+        //testFatorialDe0();
+        //testFatorialDe5a7();
     }

     public void testFibonacci() {
     }

+    public void testFatorialComArgumentoNegativo() {
+        long result = -1;
+        try {
+            result = Matematica.fatorial(-1);
+            fail("fatorial(-1) deveria ter lançado IllegalArgumentException");
+        } catch (IllegalArgumentException e) {
+            // ok, isto era esperado!
+        }
+    }
+
     public static void main(String args[]) {
         MatematicaTest mt = new MatematicaTest();
         try {
EOF

vim MatematicaTest.java

javac MatematicaTest.java

cat > Matematica.java <<EOF
public class Matematica {
    public static long fatorial(long n) {
        if (n < 0)
            throw new IllegalArgumentException();
        return 0;
    }
}
EOF
javac MatematicaTest.java
java MatematicaTest

patch MatematicaTest.java <<EOF
--- MatematicaTest.java.2   2015-02-08 18:27:38.001992577 -0200
+++ MatematicaTest.java 2015-02-08 18:31:41.453083559 -0200
@@ -3,9 +3,17 @@
         throw new AssertionFailedError(message);
     }

+    public static void assertEquals(String message, long expected, long actual) {
+        if (expected != actual) {
+            throw new AssertionFailedError(message +
+              "\nValor esperado: " + expected +
+              "\nValor obtido: " + actual);
+        }
+    }
+
     public void testFatorial() {
         testFatorialComArgumentoNegativo();
-        //testFatorialDe0();
+        testFatorialDe0();
         //testFatorialDe5a7();
     }

@@ -22,6 +30,10 @@
         }
     }

+    public void testFatorialDe0() {
+        assertEquals("fatorial(0) != 1", 1, Matematica.fatorial(0));
+    }
+
     public static void main(String args[]) {
         MatematicaTest mt = new MatematicaTest();
         try {

EOF
javac MatematicaTest.java
java MatematicaTest

Teste falhou:
AssertionFailedError: fatorial(0) != 1
Valor esperado: 1
Valor obtido: 0
    at MatematicaTest.assertEquals(MatematicaTest.java:8)
    at MatematicaTest.testFatorialDe0(MatematicaTest.java:34)
    at MatematicaTest.testFatorial(MatematicaTest.java:16)
    at MatematicaTest.main(MatematicaTest.java:40)

patch Matematica.java <<EOF
--- Matematica.java.1   2015-02-08 18:39:36.414359163 -0200
+++ Matematica.java 2015-02-08 18:41:59.534234153 -0200
@@ -2,6 +2,8 @@
     public static long fatorial(long n) {
         if (n < 0)
             throw new IllegalArgumentException();
+        if (n == 0)
+            return 1;
         return 0;
     }
 }
EOF
javac *.java
java MatematicaTest

patch MatematicaTest.java <<EOF
--- MatematicaTest.java.3   2015-02-08 18:13:34.544606524 -0200
+++ MatematicaTest.java 2015-02-08 18:55:56.352636333 -0200
@@ -14,7 +14,7 @@
     public void testFatorial() {
         testFatorialComArgumentoNegativo();
         testFatorialDe0();
-        //testFatorialDe5a7();
+        testFatorialDe5a7();
     }

     public void testFibonacci() {
@@ -34,6 +34,16 @@
         assertEquals("fatorial(0) != 1", 1, Matematica.fatorial(0));
     }

+    public void testFatorialDe5a7() {
+        for (int i = 5; i <= 7; i++) {
+            switch (i) {
+                case 5: assertEquals("fatorial(5) != 120", 120, Matematica.fatorial(5)); break;
+                case 6: assertEquals("fatorial(6) != 720", 720, Matematica.fatorial(6)); break;
+                case 7: assertEquals("fatorial(7) != 5040", 5040, Matematica.fatorial(7)); break;
+            }
+        }
+    }
+
     public static void main(String args[]) {
         MatematicaTest mt = new MatematicaTest();
         try {
EOF
patch Matematica.java <<EOF
--- Matematica.java.2   2015-02-08 18:57:08.081070792 -0200
+++ Matematica.java 2015-02-08 19:06:05.813831088 -0200
@@ -4,6 +4,12 @@
             throw new IllegalArgumentException();
         if (n == 0)
             return 1;
+        else if (n == 5)
+            return 120;
+        else if (n == 6)
+            return 720;
+        else if (n == 7)
+            return 5040;
         return 0;
     }
 }
EOF
javac *.java
java MatematicaTest

patch MatematicaTest.java <<EOF
--- MatematicaTest.java.4   2015-02-09 01:58:00.285104599 -0200
+++ MatematicaTest.java 2015-02-09 02:04:24.212655227 -0200
@@ -1,3 +1,5 @@
+import java.util.Random;
+
 public class MatematicaTest {
     public static void fail(String message) {
         throw new AssertionFailedError(message);
@@ -15,6 +17,7 @@
         testFatorialComArgumentoNegativo();
         testFatorialDe0();
         testFatorialDe5a7();
+        testFatorialDeN();
     }

     public void testFibonacci() {
@@ -43,6 +46,31 @@
             }
         }
     }
+
+    public void testFatorialDeN() {
+        long result;
+
+        // testa a regra "fatorial(n) = n * fatorial(n-1)" 30 vezes
+        // n é um número aleatório entre 0 e 20.
+        // Porque 20? Porque este é o inteiro máximo cujo fatorial
+        // não estrapola Long.MAX_VALUE: Veja em FatorialMaximo.java
+        Random r = new Random();
+        int n;
+        for (int i = 0; i < 30; i++) {
+            n = r.nextInt(20 + 1);
+            if (n < 0)
+                assert true : "n nunca deveria ser negativo!";
+            else {
+                result = Matematica.fatorial(n);
+                System.out.printf("%2d: Fatorial de %2d = %d\n", i, n, result);
+                if (n == 0)
+                  assertEquals("fatorial(0) != 1", result, 1);
+                else
+                  assertEquals("fatorial("+n+") != "+n+" * fatorial("+(n-1)+")",
+                    result, n * Matematica.fatorial(n-1));
+            }
+        }
+    }

     public static void main(String args[]) {
         MatematicaTest mt = new MatematicaTest();
EOF
javac MatematicaTest.java
java MatematicaTest

patch Matematica.java <<EOF
--- Matematica.java.3   2015-02-09 01:58:11.897021389 -0200
+++ Matematica.java 2015-02-09 02:14:33.710629599 -0200
@@ -2,14 +2,6 @@
     public static long fatorial(long n) {
         if (n < 0)
             throw new IllegalArgumentException();
-        if (n == 0)
-            return 1;
-        else if (n == 5)
-            return 120;
-        else if (n == 6)
-            return 720;
-        else if (n == 7)
-            return 5040;
-        return 0;
+        return n == 0 ? 1 : n * fatorial(n - 1);
     }
 }
EOF

javac *.java
for i in `seq 4`; do java MatematicaTest | (less; read n); done

d=~/exemplos/bdd; rm -rf $d && mkdir -p $d && cd $d
d=src/test/resources/com/ladoservidor/cucumber/helloworld; mkdir -p $d
cat > $d/helloworld.feature <<'EOF'
Feature: Hello World

  Scenario: Say hello
    Given I have a hello app with "Hello"
    When I ask it to say hi
    Then it should answer with "Hello World"
EOF

cat > pom.xml <<'EOF'
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>
    <groupId>com.ladoservidor</groupId>
    <artifactId>cucumber-jvm-helloworld</artifactId>
    <version>1.0</version>
    <packaging>jar</packaging>
    <name>cucumber-jvm/HelloWorld</name>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.5.1</version>
                <configuration>
                    <encoding>UTF-8</encoding>
                    <source>1.6</source>
                    <target>1.6</target>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.12.2</version>
                <configuration>
                    <useFile>false</useFile>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <dependencies>
        <dependency>
            <groupId>info.cukes</groupId>
            <artifactId>cucumber-java</artifactId>
            <version>1.1.2</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>info.cukes</groupId>
            <artifactId>cucumber-junit</artifactId>
            <version>1.1.2</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
</project>
EOF

tree

d=src/test/java/com/ladoservidor/cucumber/helloworld; mkdir -p $d
cat > $d/RunCukesTest.java <<'EOF'
package com.ladoservidor.cucumber.helloworld;

import cucumber.api.junit.Cucumber;
import org.junit.runner.RunWith;

@RunWith(Cucumber.class)
@Cucumber.Options(
  format = {
    "pretty",
    "html:target/cucumber-html-report",
    "json-pretty:target/cucumber-json-report.json"
  }
)
public class RunCukesTest {
}
EOF

mvn test

tree target
browse target/cucumber-html-report/index.html

cat > $d/HelloStepdefs.java <<'EOF'
package com.ladoservidor.cucumber.helloworld;

import cucumber.api.java.en.Given;
import cucumber.api.java.en.Then;
import cucumber.api.java.en.When;

import static org.junit.Assert.assertEquals;

public class HelloStepdefs {
    private Hello hello;
    private String hi;

    @Given("^I have a hello app with \"([^\"]*)\"$")
    public void I_have_a_hello_app_with(String greeting) {
        hello = new Hello(greeting);
    }

    @When("^I ask it to say hi$")
    public void I_ask_it_to_say_hi() {
        hi = hello.sayHi();
    }

    @Then("^it should answer with \"([^\"]*)\"$")
    public void it_should_answer_with(String expectedHi) {
        assertEquals(expectedHi, hi);
    }
}
EOF

d=src/main/java/com/ladoservidor/cucumber/helloworld
mkdir -p $d
cat > $d/Hello.java <<'EOF'
package com.ladoservidor.cucumber.helloworld;

public class Hello {
    private final String greeting;

    public Hello(String greeting) {
        this.greeting = greeting;
    }

    public String sayHi() {
        return greeting + " World";
    }
}
EOF

mvn test

d=src/test/resources/com/ladoservidor/cucumber/helloworld
cat > $d/helloworld.feature <<'EOF'
# language: pt
Funcionalidade: Diga Olá

  Cenário: Dizer "Olá Fulano!"
    Dado que eu tenho uma app que recebe "Paulo"
    Quando eu pedir que ela diga olá
    Então ela deveria responder "Olá Paulo!"
EOF

patch -p1 <<'EOF'
--- ./src/test/java/com/ladoservidor/cucumber/helloworld/RunCukesTest.java  2013-04-05 15:44:14.000000000 -0300
+++ ../HelloWorld.pt/src/test/java/com/ladoservidor/cucumber/helloworld/RunCukesTest.java 2013-04-05 15:45:15.000000000 -0300
@@ -8,7 +8,8 @@ import org.junit.runner.RunWith;
   format = {
     "pretty",
     "html:target/cucumber-html-report",
-    "json-pretty:target/cucumber-json-report.json"
+    "json-pretty:target/cucumber-json-report.json",
+    "json:target/cucumber-pt.json"
   }
 )
 public class RunCukesTest {
EOF

patch -p1 <<'EOF'
--- ./src/test/java/com/ladoservidor/cucumber/helloworld/HelloStepdefs.java 2013-04-05 15:44:14.000000000 -0300
+++ ../HelloWorld.pt/src/test/java/com/ladoservidor/cucumber/helloworld/HelloStepdefs.java  2013-04-05 15:45:15.000000000 -0300
@@ -1,8 +1,8 @@
 package com.ladoservidor.cucumber.helloworld;

-import cucumber.api.java.en.Given;
-import cucumber.api.java.en.Then;
-import cucumber.api.java.en.When;
+import cucumber.api.java.pt.Dado;
+import cucumber.api.java.pt.Quando;
+import cucumber.api.java.pt.Entao;

 import static org.junit.Assert.assertEquals;

@@ -10,17 +10,17 @@ public class HelloStepdefs {
     private Hello hello;
     private String hi;

-    @Given("^I have a hello app with \"([^\"]*)\"$")
+    @Dado("^que eu tenho uma app que recebe \"([^\"]*)\"$")
     public void I_have_a_hello_app_with(String greeting) {
         hello = new Hello(greeting);
     }

-    @When("^I ask it to say hi$")
+    @Quando("^eu pedir que ela diga olá$")
     public void I_ask_it_to_say_hi() {
         hi = hello.sayHi();
     }

-    @Then("^it should answer with \"([^\"]*)\"$")
+    @Entao("^ela deveria responder \"([^\"]*)!\"$")
     public void it_should_answer_with(String expectedHi) {
         assertEquals(expectedHi, hi);
     }
EOF

patch -p1 <<'EOF'
--- ./src/main/java/com/ladoservidor/cucumber/helloworld/Hello.java 2013-04-05 15:44:14.000000000 -0300
+++ ../HelloWorld.pt/src/main/java/com/ladoservidor/cucumber/helloworld/Hello.java  2013-04-05 15:45:15.000000000 -0300
@@ -8,6 +8,6 @@ public class Hello {
     }

     public String sayHi() {
-        return greeting + " World";
+        return "Olá " + greeting;
     }
 }
EOF

mvn test

mkdir -p ~/exemplos
cd !$
unzip ~/instaladores/jboss-eap-6.3.0-quickstarts.zip
cd jboss-eap-6.3.0.GA-quickstarts/
cp settings.xml ~/.m2/

gem install asciidoctor

gpg --keyserver hkp://keys.gnupg.net --recv-keys D39DC0E3
curl -sSL https://get.rvm.io | bash -s stable
source ~/.profile
rvm install 2.2.0
ruby --version

./build
./build pdf