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SlowSortTest.java
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163 lines (140 loc) · 5.23 KB
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package com.thealgorithms.sorts;
import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import java.util.Objects;
import org.junit.jupiter.api.Test;
/**
* @author Rebecca Velez (https://github.com/rebeccavelez)
* @see SlowSort
*/
public class SlowSortTest {
private SlowSort slowSort = new SlowSort();
@Test
public void slowSortEmptyArray() {
Integer[] inputArray = {};
Integer[] outputArray = slowSort.sort(inputArray);
Integer[] expectedOutput = {};
assertArrayEquals(outputArray, expectedOutput);
}
@Test
public void slowSortSingleIntegerElementArray() {
Integer[] inputArray = {5};
Integer[] outputArray = slowSort.sort(inputArray);
Integer[] expectedOutput = {5};
assertArrayEquals(outputArray, expectedOutput);
}
@Test
public void slowSortSingleStringElementArray() {
String[] inputArray = {"k"};
String[] outputArray = slowSort.sort(inputArray);
String[] expectedOutput = {"k"};
assertArrayEquals(outputArray, expectedOutput);
}
@Test
public void slowSortIntegerArray() {
Integer[] inputArray = {8, 84, 53, -683, 953, 64, 2, 202, 98, -10};
Integer[] outputArray = slowSort.sort(inputArray);
Integer[] expectedOutput = {-683, -10, 2, 8, 53, 64, 84, 98, 202, 953};
assertArrayEquals(outputArray, expectedOutput);
}
@Test
public void slowSortDuplicateIntegerArray() {
Integer[] inputArray = {8, 84, 8, -2, 953, 64, 2, 953, 98};
Integer[] outputArray = slowSort.sort(inputArray);
Integer[] expectedOutput = {-2, 2, 8, 8, 64, 84, 98, 953, 953};
assertArrayEquals(outputArray, expectedOutput);
}
@Test
public void slowSortStringArray() {
String[] inputArray = {"g", "d", "a", "b", "f", "c", "e"};
String[] outputArray = slowSort.sort(inputArray);
String[] expectedOutput = {"a", "b", "c", "d", "e", "f", "g"};
assertArrayEquals(outputArray, expectedOutput);
}
@Test
public void slowSortDuplicateStringArray() {
String[] inputArray = {"g", "d", "a", "g", "b", "f", "d", "c", "e"};
String[] outputArray = slowSort.sort(inputArray);
String[] expectedOutput = {"a", "b", "c", "d", "d", "e", "f", "g", "g"};
assertArrayEquals(outputArray, expectedOutput);
}
@Test
public void slowSortStringSymbolArray() {
String[] inputArray = {"cbf", "auk", "ó", "(b", "a", ")", "au", "á", "cba", "auk", "(a", "bhy", "cba"};
String[] outputArray = slowSort.sort(inputArray);
String[] expectedOutput = {"(a", "(b", ")", "a", "au", "auk", "auk", "bhy", "cba", "cba", "cbf", "á", "ó"};
assertArrayEquals(outputArray, expectedOutput);
}
@Test
public void testSortAlreadySortedArray() {
Integer[] inputArray = {-12, -6, -3, 0, 2, 2, 13, 46};
Integer[] outputArray = slowSort.sort(inputArray);
Integer[] expectedOutput = {-12, -6, -3, 0, 2, 2, 13, 46};
assertArrayEquals(outputArray, expectedOutput);
}
@Test
public void testSortReversedSortedArray() {
Integer[] inputArray = {46, 13, 2, 2, 0, -3, -6, -12};
Integer[] outputArray = slowSort.sort(inputArray);
Integer[] expectedOutput = {-12, -6, -3, 0, 2, 2, 13, 46};
assertArrayEquals(outputArray, expectedOutput);
}
@Test
public void testSortAllEqualArray() {
Integer[] inputArray = {2, 2, 2, 2, 2};
Integer[] outputArray = slowSort.sort(inputArray);
Integer[] expectedOutput = {2, 2, 2, 2, 2};
assertArrayEquals(outputArray, expectedOutput);
}
@Test
public void testSortMixedCaseStrings() {
String[] inputArray = {"banana", "Apple", "apple", "Banana"};
String[] expectedOutput = {"Apple", "Banana", "apple", "banana"};
String[] outputArray = slowSort.sort(inputArray);
assertArrayEquals(expectedOutput, outputArray);
}
/**
* Custom Comparable class for testing.
**/
static class Person implements Comparable<Person> {
String name;
int age;
Person(String name, int age) {
this.name = name;
this.age = age;
}
@Override
public int compareTo(Person o) {
return Integer.compare(this.age, o.age);
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
Person person = (Person) o;
return age == person.age && Objects.equals(name, person.name);
}
@Override
public int hashCode() {
return Objects.hash(name, age);
}
}
@Test
public void testSortCustomObjects() {
Person[] inputArray = {
new Person("Alice", 32),
new Person("Bob", 25),
new Person("Charlie", 28),
};
Person[] expectedOutput = {
new Person("Bob", 25),
new Person("Charlie", 28),
new Person("Alice", 32),
};
Person[] outputArray = slowSort.sort(inputArray);
assertArrayEquals(expectedOutput, outputArray);
}
}