[BAEL-3646] Conditional Flow in Spring Batch

spring-batch/src/test/java/org/baeldung/conditionalflow/model/NumberInfoUnitTest.java

@@ -0,0 +1,44 @@
+package org.baeldung.conditionalflow.model;
+
+import org.junit.jupiter.api.Test;
+import org.junit.runner.RunWith;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+class NumberInfoUnitTest {
+
+    @Test
+    void isPositive() {
+        assertTrue(NumberInfo.from(1).isPositive());
+        assertTrue(NumberInfo.from(11).isPositive());
+        assertFalse(NumberInfo.from(0).isPositive());
+        assertFalse(NumberInfo.from(-1).isPositive());
+        assertFalse(NumberInfo.from(-10).isPositive());
+    }
+
+    @Test
+    void isEven() {
+        assertTrue(NumberInfo.from(0).isEven());
+        assertTrue(NumberInfo.from(-2).isEven());
+        assertTrue(NumberInfo.from(2).isEven());
+        assertTrue(NumberInfo.from(-22).isEven());
+        assertTrue(NumberInfo.from(22).isEven());
+
+        assertFalse(NumberInfo.from(1).isEven());
+        assertFalse(NumberInfo.from(-1).isEven());
+
+        assertFalse(NumberInfo.from(13).isEven());
+        assertFalse(NumberInfo.from(-13).isEven());
+        assertFalse(NumberInfo.from(31).isEven());
+        assertFalse(NumberInfo.from(-51).isEven());
+    }
+
+    @Test
+    void getNumber() {
+        for(int i = -100 ; i < 100 ; i++){
+            assertEquals(i, NumberInfo.from(i).getNumber());
+        }
+    }
+}

spring-batch/src/test/java/org/baeldung/conditionalflow/step/NumberInfoClassifierUnitTest.java

@@ -0,0 +1,17 @@
+package org.baeldung.conditionalflow.step;
+
+import org.baeldung.conditionalflow.model.NumberInfo;
+import org.baeldung.conditionalflow.step.NumberInfoClassifier;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class NumberInfoClassifierUnitTest {
+
+    @Test
+    void process() throws Exception {
+        NumberInfoClassifier nic = new NumberInfoClassifier();
+        assertEquals(Integer.valueOf(4), nic.process(NumberInfo.from(4)));
+        assertEquals(Integer.valueOf(-4), nic.process(NumberInfo.from(-4)));
+    }
+}

spring-batch/src/test/java/org/baeldung/conditionalflow/step/NumberInfoGeneratorUnitTest.java

@@ -0,0 +1,20 @@
+package org.baeldung.conditionalflow.step;
+
+import org.baeldung.conditionalflow.model.NumberInfo;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+public class NumberInfoGeneratorUnitTest {
+    @Test
+    public void testGenerateNumbers() {
+        int[] numbers = new int[]{1, -2, 4, -10};
+        NumberInfoGenerator numberGenerator = new NumberInfoGenerator(numbers);
+        assertEquals(new NumberInfo(numbers[0]), numberGenerator.read());
+        assertEquals(new NumberInfo(numbers[1]), numberGenerator.read());
+        assertEquals(new NumberInfo(numbers[2]), numberGenerator.read());
+        assertEquals(new NumberInfo(numbers[3]), numberGenerator.read());
+        assertNull(numberGenerator.read());
+    }
+}