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TestClass.java
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TestClass.java
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/*
Example class, not intended to be used, is reference
https://stackoverflow.com/questions/52373469/how-to-launch-junit-5-platform-from-the-command-line-without-maven-gradle/52373592#52373592
*/
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import java.util.ArrayList;
import java.util.Collections;
import static org.junit.jupiter.api.Assertions.*;
public class TestClass {
private static ArrayList<Student> students;
private static ArrayList<Student> inAgeOrderStudents;
private static ArrayList<Student> inNameOrderStudents;
@BeforeAll
static void setUp(){
initializeStudents();
initSortedAgeStudents();
initSortedNameStudents();
}
@BeforeEach
void reloadStudents() {
Collections.shuffle(students);
}
static void initializeStudents(){
students = new ArrayList<Student>();
students.add(new Student(18, "Tim"));
students.add(new Student(18, "Tim"));
students.add(new Student(16, "Jean"));
students.add(new Student(14, "Lin"));
students.add(new Student(19, "Sam"));
}
static void initSortedAgeStudents(){
inAgeOrderStudents = new ArrayList<Student>();
inAgeOrderStudents.add(new Student(14, "Lin"));
inAgeOrderStudents.add(new Student(16, "Jean"));
inAgeOrderStudents.add(new Student(18, "Tim"));
inAgeOrderStudents.add(new Student(18, "Tim"));
inAgeOrderStudents.add(new Student(19, "Sam"));
}
static void initSortedNameStudents(){
inNameOrderStudents = new ArrayList<Student>();
inNameOrderStudents.add(new Student(16, "Jean"));
inNameOrderStudents.add(new Student(14, "Lin"));
inNameOrderStudents.add(new Student(19, "Sam"));
inNameOrderStudents.add(new Student(18, "Tim"));
inNameOrderStudents.add(new Student(18, "Tim"));
}
@Test
void testMergeSort() {
assertNotEquals(students, inAgeOrderStudents);
StudentSortSearch.mergesort(students,StudentSortSearch.SortSearchCriteria.AGE);
assertEquals(14,students.get(0).getAge());
assertEquals(19,students.get(4).getAge());
assertEquals(students, inAgeOrderStudents);
assertEquals(true,students.equals(inAgeOrderStudents));
}
@Test
void testQuickSort() {
StudentSortSearch.quickSort(students,StudentSortSearch.SortSearchCriteria.NAME);
assertEquals("Jean",students.get(0).getName());
assertEquals("Tim",students.get(4).getName());
assertEquals(students, inNameOrderStudents);
}
@Test
void testBinarySearch() {
StudentSortSearch searcher = new StudentSortSearch();
ArrayList<Student> searchResults = searcher.binarySearch(students, 18);
assertEquals(2, searchResults.size());
assertEquals(18,searchResults.get(1).getAge());
assertEquals(18,searchResults.get(0).getAge());
searchResults = searcher.binarySearch(students, "Lin");
assertEquals(1, searchResults.size());
assertEquals(14,searchResults.get(0).getAge());
}
}