Java/src/test/java/com/examplehub/leetcode/easy/LinkedListCycleTest.java at basics · letscode-17/Java · GitHub

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package com.examplehub.leetcode.easy;

import static org.junit.jupiter.api.Assertions.*;

import com.examplehub.leetcode.ListNode;
import org.junit.jupiter.api.Test;

class LinkedListCycleTest {
  @Test
  void testSolution1() {
    ListNode head = new ListNode(3);
    ListNode node2 = new ListNode(2);
    ListNode node3 = new ListNode(0);
    ListNode node4 = new ListNode(4);
    head.next = node2;
    node2.next = node3;
    node3.next = node4;
    node4.next = node2;
    assertTrue(LinkedListCycle.solution1(head));

    head = new ListNode(1);
    node2 = new ListNode(2);
    head.next = node2;
    node2.next = head;
    assertTrue(LinkedListCycle.solution1(head));

    head = new ListNode(1);
    assertFalse(LinkedListCycle.solution1(head));
  }

  @Test
  void testSolution2() {
    ListNode head = new ListNode(3);
    ListNode node2 = new ListNode(2);
    ListNode node3 = new ListNode(0);
    ListNode node4 = new ListNode(4);
    head.next = node2;
    node2.next = node3;
    node3.next = node4;
    node4.next = node2;
    assertTrue(LinkedListCycle.solution2(head));

    head = new ListNode(1);
    node2 = new ListNode(2);
    head.next = node2;
    node2.next = head;
    assertTrue(LinkedListCycle.solution2(head));

    head = new ListNode(1);
    assertFalse(LinkedListCycle.solution2(head));
  }
}