diff --git a/testing-modules/testing/pom.xml b/testing-modules/testing/pom.xml
index 7aff0a93e0..1fd6357b87 100644
--- a/testing-modules/testing/pom.xml
+++ b/testing-modules/testing/pom.xml
@@ -94,6 +94,11 @@
             <version>1.5</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.javalite</groupId>
+            <artifactId>javalite-common</artifactId>
+            <version>${javalite.version}</version>
+        </dependency>
     </dependencies>
     <build>
         <plugins>
@@ -162,5 +167,6 @@
         <truth.version>0.32</truth.version>
         <jUnitParams.version>1.1.0</jUnitParams.version>
         <jgotesting.version>0.12</jgotesting.version>
+        <javalite.version>1.4.13</javalite.version>
     </properties>
 </project>
diff --git a/testing-modules/testing/src/main/java/com/baeldung/jspec/Animal.java b/testing-modules/testing/src/main/java/com/baeldung/jspec/Animal.java
new file mode 100644
index 0000000000..efb4c62bde
--- /dev/null
+++ b/testing-modules/testing/src/main/java/com/baeldung/jspec/Animal.java
@@ -0,0 +1,41 @@
+package com.baeldung.jspec;
+
+public abstract class Animal {
+
+    protected String name;
+
+    public Animal(String name) {
+        this.name = name;
+    }
+    
+    public String getName() {
+        return name;
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + ((name == null) ? 0 : name.hashCode());
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null)
+            return false;
+        if (getClass() != obj.getClass())
+            return false;
+        Animal other = (Animal) obj;
+        if (name == null) {
+            if (other.name != null)
+                return false;
+        } else if (!name.equals(other.name))
+            return false;
+        return true;
+    }
+    
+    
+}
diff --git a/testing-modules/testing/src/main/java/com/baeldung/jspec/Cage.java b/testing-modules/testing/src/main/java/com/baeldung/jspec/Cage.java
new file mode 100644
index 0000000000..73ea343600
--- /dev/null
+++ b/testing-modules/testing/src/main/java/com/baeldung/jspec/Cage.java
@@ -0,0 +1,48 @@
+package com.baeldung.jspec;
+
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
+
+public class Cage {
+    
+    private Set<Animal> animals = new HashSet<>();
+    
+    public void put(Animal animal) {
+        animals.add(animal);
+    }
+    
+    public void put(Animal... animals) {
+        this.animals.addAll(Arrays.asList(animals));
+    }
+    
+    public Animal release(Animal animal) {
+        return animals.remove(animal) ? animal : null;
+    }
+    
+    public void open() {
+        animals.clear();
+    }
+    
+    public boolean hasAnimals() {
+        return animals.size() > 0;
+    }
+    
+    public boolean isEmpty() {
+        return animals.isEmpty();
+    }
+    
+    public Set<Animal> getAnimals() {
+        return this.animals;
+    }
+    
+    public int size() {
+        return animals.size();
+    }
+
+    @Override
+    public String toString() {
+        return "Cage [animals=" + animals + "]";
+    }
+    
+}
diff --git a/testing-modules/testing/src/main/java/com/baeldung/jspec/Cat.java b/testing-modules/testing/src/main/java/com/baeldung/jspec/Cat.java
new file mode 100644
index 0000000000..5021a1481c
--- /dev/null
+++ b/testing-modules/testing/src/main/java/com/baeldung/jspec/Cat.java
@@ -0,0 +1,14 @@
+package com.baeldung.jspec;
+
+public class Cat extends Animal {
+
+    public Cat(String name) {
+        super(name);
+    }
+
+    @Override
+    public String toString() {
+        return "Cat [name=" + name + "]";
+    }
+    
+}
diff --git a/testing-modules/testing/src/main/java/com/baeldung/jspec/Dog.java b/testing-modules/testing/src/main/java/com/baeldung/jspec/Dog.java
new file mode 100644
index 0000000000..43626941e3
--- /dev/null
+++ b/testing-modules/testing/src/main/java/com/baeldung/jspec/Dog.java
@@ -0,0 +1,14 @@
+package com.baeldung.jspec;
+
+public class Dog extends Animal {
+
+    public Dog(String name) {
+        super(name);
+    }
+
+    @Override
+    public String toString() {
+        return "Dog [name=" + name + "]";
+    }
+    
+}
diff --git a/testing-modules/testing/src/test/java/com/baeldung/jspec/CageUnitTest.java b/testing-modules/testing/src/test/java/com/baeldung/jspec/CageUnitTest.java
new file mode 100644
index 0000000000..33ef986588
--- /dev/null
+++ b/testing-modules/testing/src/test/java/com/baeldung/jspec/CageUnitTest.java
@@ -0,0 +1,126 @@
+package com.baeldung.jspec;
+
+import static org.javalite.test.jspec.JSpec.$;
+import static org.javalite.test.jspec.JSpec.expect;
+import static org.javalite.test.jspec.JSpec.the;
+
+import java.util.Set;
+
+import org.javalite.test.jspec.DifferenceExpectation;
+import org.junit.Test;
+
+public class CageUnitTest {
+
+    Cat tomCat = new Cat("Tom");
+    Cat felixCat = new Cat("Felix");
+    Dog boltDog = new Dog("Bolt");
+    Cage cage = new Cage();
+
+    
+    @Test
+    public void puttingAnimals_shouldIncreaseCageSize() {
+        // When
+        cage.put(tomCat, boltDog);
+        
+        // Then
+        the(cage.size()).shouldEqual(2);
+    }
+    
+    @Test
+    public void releasingAnimals_shouldDecreaseCageSize() {
+        // When
+        cage.put(tomCat, boltDog);
+        cage.release(tomCat);
+        
+        // Then
+        the(cage.size()).shouldEqual(1);
+    }
+    
+    @Test
+    public void puttingAnimals_shouldLeaveThemInsideTheCage() {
+        // When
+        cage.put(tomCat, boltDog);
+        
+        // Then
+        the(cage).shouldHave("animals");
+    }
+    
+    @Test
+    public void openingTheCage_shouldReleaseAllAnimals() {
+        // When
+        cage.put(tomCat, boltDog);
+        
+        // Then
+        the(cage).shouldNotBe("empty");
+        
+        // When
+        cage.open();
+        
+        // Then
+        the(cage).shouldBe("empty");
+        the(cage.isEmpty()).shouldBeTrue();
+    }
+    
+    @Test
+    public void comparingTwoDogs() {
+        // When
+        Dog firstDog = new Dog("Rex");
+        Dog secondDog = new Dog("Rex");
+        
+        // Then
+        $(firstDog).shouldEqual(secondDog);
+        $(firstDog).shouldNotBeTheSameAs(secondDog);
+    }
+    
+    @Test
+    public void puttingCatsOnly_shouldLetCageAnimalsToContainCats() {
+        // When
+        cage.put(tomCat, felixCat);
+        
+        // Then
+        Set<Animal> animals = cage.getAnimals();
+        the(animals).shouldContain(tomCat);
+        the(animals).shouldContain(felixCat);
+        the(animals).shouldNotContain(boltDog);
+    }
+    
+    @Test
+    public void puttingCatsOnly_shouldLetCageToContainCats() {
+        // When
+        cage.put(tomCat, felixCat);
+        
+        // Then
+        // Check with toString of the tested objects
+        the(cage).shouldContain(tomCat);
+        the(cage).shouldContain(felixCat);
+        the(cage).shouldNotContain(boltDog);
+    }
+    
+    @Test
+    public void puttingMoreAnimals_shouldChangeSize() {
+        // When
+        cage.put(tomCat, boltDog);
+        
+        // Then
+        expect( new DifferenceExpectation<Integer>(cage.size()) {
+
+            @Override
+            public Integer exec() {
+                cage.release(tomCat);
+                return cage.size();
+            }
+        } );
+    }
+    
+    
+    @Test
+    public void releasingTheDog_shouldReleaseAnAnimalOfDogType() {
+        // When
+        cage.put(boltDog);
+        Animal releasedAnimal = cage.release(boltDog);
+        
+        // Then
+        the(releasedAnimal).shouldNotBeNull();
+        the(releasedAnimal).shouldBeA(Dog.class);
+    }
+}
diff --git a/testing-modules/testing/src/test/java/com/baeldung/jspec/JSpecUnitTest.java b/testing-modules/testing/src/test/java/com/baeldung/jspec/JSpecUnitTest.java
new file mode 100644
index 0000000000..0e35e26728
--- /dev/null
+++ b/testing-modules/testing/src/test/java/com/baeldung/jspec/JSpecUnitTest.java
@@ -0,0 +1,57 @@
+package com.baeldung.jspec;
+
+import static org.javalite.test.jspec.JSpec.$;
+import static org.javalite.test.jspec.JSpec.a;
+import static org.javalite.test.jspec.JSpec.expect;
+import static org.javalite.test.jspec.JSpec.it;
+import static org.javalite.test.jspec.JSpec.the;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.javalite.test.jspec.ExceptionExpectation;
+import org.junit.Test;
+
+public class JSpecUnitTest {
+
+    @Test
+    public void onePlusTwo_shouldEqualThree() {
+        $(1 + 2).shouldEqual(3);
+        a(1 + 2).shouldEqual(3);
+        the(1 + 2).shouldEqual(3);
+        it(1 + 2).shouldEqual(3);
+    }
+    
+    @Test
+    public void messageShouldContainJSpec() {
+        String message = "Welcome to JSpec demo";
+        // The message should not be empty
+        the(message).shouldNotBe("empty");
+        // The message should contain JSpec
+        the(message).shouldContain("JSpec");
+    }
+
+    public void colorsListShouldContainRed() {
+        List<String> colorsList = Arrays.asList("red", "green", "blue");
+        $(colorsList).shouldContain("red");
+    }
+
+    public void guessedNumberShouldEqualHiddenNumber() {
+        Integer guessedNumber = 11;
+        Integer hiddenNumber = 11;
+
+        $(guessedNumber).shouldEqual(hiddenNumber);
+        $(guessedNumber).shouldNotBeTheSameAs(hiddenNumber);
+    }
+    
+    @Test
+    public void dividingByThero_shouldThrowArithmeticException() {
+        expect(new ExceptionExpectation<ArithmeticException>(ArithmeticException.class) {
+            @Override
+            public void exec() throws ArithmeticException {
+                System.out.println(1 / 0);
+            }
+        } );
+    }
+
+}