BAEL-1020 -Introductionjukito (#2634)

* Examples for retrofit guide

* Introduction to Jukito

* class not needed

* Changed to testing module

testing/pom.xml

@@ -87,6 +87,12 @@
             <version>${jgotesting.version}</version>
             <scope>test</scope>
         </dependency>        
+        <dependency>
+            <groupId>org.jukito</groupId>
+            <artifactId>jukito</artifactId>
+            <version>1.5</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
     <build>
         <plugins>

testing/src/main/java/com/baeldung/introductionjukito/Calculator.java

@@ -0,0 +1,7 @@
+package com.baeldung.introductionjukito;
+
+public interface Calculator {
+
+    public double add(double a, double b);
+
+}

testing/src/main/java/com/baeldung/introductionjukito/ScientificCalculator.java

@@ -0,0 +1,5 @@
+package com.baeldung.introductionjukito;
+
+public class ScientificCalculator extends SimpleCalculator {
+    
+}

testing/src/main/java/com/baeldung/introductionjukito/SimpleCalculator.java

@@ -0,0 +1,10 @@
+package com.baeldung.introductionjukito;
+
+public class SimpleCalculator implements Calculator {
+
+    @Override
+    public double add(double a, double b) {
+        return a+b;
+    }
+
+}

testing/src/test/java/com/baeldung/introductionjukito/CalculatorTest.java

@@ -0,0 +1,62 @@
+package com.baeldung.introductionjukito;
+
+import org.jukito.All;
+import org.jukito.JukitoModule;
+import org.jukito.JukitoRunner;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import static org.junit.Assert.*;
+
+@RunWith(JukitoRunner.class)
+public class CalculatorTest {
+
+    public static class Module extends JukitoModule {
+
+        @Override
+        protected void configureTest() {
+            bindMany(Calculator.class, SimpleCalculator.class, 
+              ScientificCalculator.class);
+            bindManyInstances(AdditionTest.class, new AdditionTest(1, 1, 2), 
+              new AdditionTest(10, 10, 20), 
+              new AdditionTest(18, 24, 42));
+            bindManyNamedInstances(Integer.class, "even", 2, 4, 6);
+            bindManyNamedInstances(Integer.class, "odd", 1, 3, 5);
+        }
+    }
+
+    public static class AdditionTest {
+
+        int a;
+        int b;
+        int expected;
+
+        public AdditionTest(int a, int b, int expected) {
+            this.a = a;
+            this.b = b;
+            this.expected = expected;
+        }
+    }
+
+    @Test
+    public void givenTwoNumbers_WhenAdd_ThenSumBoth(@All Calculator calc) {
+        double result = calc.add(1, 1);
+        assertEquals(2, result, .1);
+    }
+
+    @Test
+    public void givenTwoNumbers_WhenAdd_ThenSumBoth(@All Calculator calc, 
+      @All AdditionTest addTest) {
+        double result = calc.add(addTest.a, addTest.b);
+        assertEquals(addTest.expected, result, .1);
+    }
+
+    @Test
+    public void givenEvenNumbers_whenPrint_thenOutput(@All("even") Integer i) {
+        System.out.println("even " + i);
+    }
+
+    @Test
+    public void givenOddNumbers_whenPrint_thenOutput(@All("odd") Integer i) {
+        System.out.println("odd " + i);
+    }
+}