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27ada8a649
* Migrate recursive reverse string method and tests to ReverseString - Moved recursive reverse method from ReverseStringRecursive.java to ReverseString.java - Moved tests from ReverseStringRecursiveTest.java to ReverseStringTest.java - Deleted old ReverseStringRecursive files * Fix formatting for ReverseStringTest.java as per clang-format linter
57 lines
2.4 KiB
Java
57 lines
2.4 KiB
Java
package com.thealgorithms.strings;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertThrows;
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import java.util.stream.Stream;
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import org.junit.jupiter.api.Test;
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import org.junit.jupiter.params.ParameterizedTest;
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import org.junit.jupiter.params.provider.Arguments;
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import org.junit.jupiter.params.provider.CsvSource;
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import org.junit.jupiter.params.provider.MethodSource;
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public class ReverseStringTest {
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private static Stream<Arguments> testCases() {
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return Stream.of(Arguments.of("Hello World", "dlroW olleH"), Arguments.of("helloworld", "dlrowolleh"), Arguments.of("123456789", "987654321"), Arguments.of("", ""), Arguments.of("A", "A"), Arguments.of("ab", "ba"),
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Arguments.of(" leading and trailing spaces ", " secaps gniliart dna gnidael "), Arguments.of("!@#$%^&*()", ")(*&^%$#@!"), Arguments.of("MixOf123AndText!", "!txeTdnA321fOxiM"));
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}
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@ParameterizedTest
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@MethodSource("testCases")
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public void testReverseString(String input, String expectedOutput) {
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assertEquals(expectedOutput, ReverseString.reverse(input));
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}
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@ParameterizedTest
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@MethodSource("testCases")
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public void testReverseString2(String input, String expectedOutput) {
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assertEquals(expectedOutput, ReverseString.reverse2(input));
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}
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@ParameterizedTest
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@MethodSource("testCases")
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public void testReverseString3(String input, String expectedOutput) {
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assertEquals(expectedOutput, ReverseString.reverse3(input));
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}
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@ParameterizedTest
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@MethodSource("testCases")
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public void testReverseStringUsingStack(String input, String expectedOutput) {
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assertEquals(expectedOutput, ReverseString.reverseStringUsingStack(input));
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}
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@Test
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public void testReverseStringUsingStackWithNullInput() {
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assertThrows(IllegalArgumentException.class, () -> ReverseString.reverseStringUsingStack(null));
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}
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@ParameterizedTest
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@CsvSource({"'Hello World', 'dlroW olleH'", "'helloworld', 'dlrowolleh'", "'123456789', '987654321'", "'', ''", "'A', 'A'", "'!123 ABC xyz!', '!zyx CBA 321!'", "'Abc 123 Xyz', 'zyX 321 cbA'", "'12.34,56;78:90', '09:87;65,43.21'", "'abcdEFGHiJKL', 'LKJiHGFEdcba'",
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"'MixOf123AndText!', '!txeTdnA321fOxiM'"})
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public void
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testReverseStringUsingRecursion(String input, String expectedOutput) {
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assertEquals(expectedOutput, ReverseString.reverseStringUsingRecursion(input));
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}
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}
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