TheAlgorithmJava/src/test/java/com/thealgorithms/strings/HammingDistanceTest.java at master · lcamhoa/TheAlgorithmJava · GitHub

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package com.thealgorithms.strings;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;

import org.junit.jupiter.api.Test;

public class HammingDistanceTest {

    @Test
    void testHammingDistance() throws Exception {
        assertEquals(HammingDistance.calculateHammingDistance("", ""), 0);
        assertEquals(
            HammingDistance.calculateHammingDistance("java", "java"),
            0
        );
        assertEquals(
            HammingDistance.calculateHammingDistance("karolin", "kathrin"),
            3
        );
        assertEquals(
            HammingDistance.calculateHammingDistance("kathrin", "kerstin"),
            4
        );
        assertEquals(
            HammingDistance.calculateHammingDistance("00000", "11111"),
            5
        );
    }

    @Test
    void testNotEqualStringLengths() {
        Exception exception = assertThrows(
            Exception.class,
            () -> HammingDistance.calculateHammingDistance("ab", "abc")
        );
        assertEquals("String lengths must be equal", exception.getMessage());
    }
}