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Add a new implementation for CheckAnagrams (#4231)

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Albina Gimaletdinova
2023-07-06 16:56:59 +03:00
committed by GitHub
parent 2456d86432
commit 9ecc3aae59
2 changed files with 105 additions and 16 deletions
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52
src/test/java/com/thealgorithms/strings/CheckAnagramsTest.java
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@ -1,35 +1,69 @@
package com.thealgorithms.strings;
import static org.junit.jupiter.api.Assertions.*;
import static org.junit.jupiter.api.Assertions.assertThrows;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
public class CheckAnagramsTest {
private static final String MESSAGE = "Strings must contain only lowercase English letters!";
// CHECK METHOD isAnagrams()
@Test
public void CheckAnagrams() {
public void testCheckAnagrams() {
String testString1 = "STUDY";
String testString2 = "DUSTY";
assertTrue(CheckAnagrams.isAnagrams(testString1, testString2));
Assertions.assertTrue(CheckAnagrams.isAnagrams(testString1, testString2));
}
@Test
public void CheckFalseAnagrams() {
public void testCheckFalseAnagrams() {
String testString1 = "STUDY";
String testString2 = "random";
assertFalse(CheckAnagrams.isAnagrams(testString1, testString2));
Assertions.assertFalse(CheckAnagrams.isAnagrams(testString1, testString2));
}
@Test
public void CheckSameWordAnagrams() {
public void testCheckSameWordAnagrams() {
String testString1 = "STUDY";
assertTrue(CheckAnagrams.isAnagrams(testString1, testString1));
Assertions.assertTrue(CheckAnagrams.isAnagrams(testString1, testString1));
}
@Test
public void CheckDifferentCasesAnagram() {
public void testCheckDifferentCasesAnagram() {
String testString1 = "STUDY";
String testString2 = "dusty";
assertTrue(CheckAnagrams.isAnagrams(testString1, testString2));
Assertions.assertTrue(CheckAnagrams.isAnagrams(testString1, testString2));
}
// CHECK METHOD isAnagramsUnicode()
// Below tests work with strings which consist of Unicode symbols & the algorithm is case-sensitive.
@Test
public void testStringAreValidAnagramsCaseSensitive() {
Assertions.assertTrue(CheckAnagrams.isAnagramsUnicode("Silent", "liSten"));
Assertions.assertTrue(CheckAnagrams.isAnagramsUnicode("This is a string", "is This a string"));
}
@Test
public void testStringAreNotAnagramsCaseSensitive() {
Assertions.assertFalse(CheckAnagrams.isAnagramsUnicode("Silent", "Listen"));
Assertions.assertFalse(CheckAnagrams.isAnagramsUnicode("This is a string", "Is this a string"));
}
// CHECK METHOD isAnagramsOptimised()
// Below tests work with strings which consist of only lowercase English letters
@Test
public void testOptimisedAlgorithmStringsAreValidAnagrams() {
Assertions.assertTrue(CheckAnagrams.isAnagramsOptimised("silent", "listen"));
Assertions.assertTrue(CheckAnagrams.isAnagramsOptimised("mam", "amm"));
}
@Test
public void testOptimisedAlgorithmShouldThrowExceptionWhenStringsContainUppercaseLetters() {
IllegalArgumentException exception = assertThrows(IllegalArgumentException.class, () -> CheckAnagrams.isAnagramsOptimised("Silent", "Listen"));
Assertions.assertEquals(exception.getMessage(), MESSAGE);
exception = assertThrows(IllegalArgumentException.class, () -> Assertions.assertFalse(CheckAnagrams.isAnagramsOptimised("This is a string", "Is this a string")));
Assertions.assertEquals(exception.getMessage(), MESSAGE);
}
}