Adicionando o conteudo sobre os testes unitarios com operadores aritmeticos

Aula04/.idea/.gitignore

+# Default ignored files
+/shelf/
+/workspace.xml

Aula04/.idea/misc.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
\ No newline at end of file

Aula04/.idea/modules.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/Aula04.iml" filepath="$PROJECT_DIR$/Aula04.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file

Aula04/.idea/vcs.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file

Aula04/Aula04.iml

+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/test" isTestSource="true" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module-library" scope="TEST">
+      <library name="JUnit4">
+        <CLASSES>
+          <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.12/junit-4.12.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+  </component>
+</module>
\ No newline at end of file

Aula04/test/ExemploAula04.java

+import org.junit.Assert;
+import org.junit.Test;
+
+public class ExemploAula04 {
+    @Test
+    public void deveSomarCorretamenteDoisNumerosInteiros(){
+    // Triple A => Arrange, Act, Assert
+
+        int valorA = 8;
+        int valorB = 2;
+        int resEsperado = 10;
+
+        int soma = valorA + valorB;
+
+        Assert.assertEquals(resEsperado, soma);
+    }
+
+    @Test
+    public void delta(){
+        double valorA = 1.5;
+        double valorB = 1.6;
+        double resEsperado = 3.1;
+
+        double soma = valorA + valorB;
+
+        Assert.assertEquals(resEsperado, soma, 0);
+    }
+
+    @Test
+    public void deltaTestValorPI(){
+        final double PI = 3.14159;
+        double valorEsperado = 3.14;
+
+        double soma = PI + valorEsperado;
+
+        Assert.assertEquals(valorEsperado, PI, 0.01);
+    }
+}