Merge pull request #19 from btirumala1219/main

For loop TDD

src/main/java/com/ordestiny/tdd/loop/ForLoop.java

@@ -0,0 +1,34 @@
+package com.ordestiny.tdd.loop;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class ForLoop {
+ public List<Integer> standardForLoop(int times) {
+ List<Integer> list = new ArrayList<>(times);
+
+ for(int i = 0; i<times; i++){
+ list.add(i);
+ }
+ return list;
+ }
+
+ public List<Integer> forEachLoop(int times) {
+ List<Integer> input = standardForLoop(times);
+ List<Integer> list = new ArrayList<>(times);
+
+ input.forEach(i -> list.add(i));
+ return list;
+ }
+
+ public List<Integer> forXinYLoop(int times) {
+ List<Integer> input = standardForLoop(times);
+ List<Integer> list = new ArrayList<>(times);
+
+ for(int i : input) {
+ list.add(i);
+ }
+
+ return list;
+ }
+}

src/test/java/com/ordestiny/tdd/loop/ForLoopTest.java

@@ -0,0 +1,36 @@
+package com.ordestiny.tdd.loop;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class ForLoopTest {
+ List<Integer> sample = new ArrayList<Integer>(Arrays.asList(0,1,2,3,4));
+ ForLoop loop = new ForLoop();
+
+ @Test
+ void standardForLoopTest() {
+ List<Integer> list = loop.standardForLoop(5);
+ assertTrue(areListsSame(list, sample));
+ }
+
+ @Test
+ void forEachLoopTest() {
+ List<Integer> list = loop.forEachLoop(5);
+ assertTrue(areListsSame(list, sample));
+ }
+
+ @Test
+ void forXinYLoopTest() {
+ List<Integer> list = loop.forXinYLoop(5);
+ assertTrue(areListsSame(list, sample));
+ }
+
+ private boolean areListsSame(List<Integer> list1, List<Integer> list2){
+ return list1.containsAll(list2);
+ }
+}