Java/src/test/java/com/thealgorithms/strings/ReverseStringTest.java at master · TheAlgorithms/Java · GitHub

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packagecom.thealgorithms.strings;

importstaticorg.junit.jupiter.api.Assertions.assertEquals;
importstaticorg.junit.jupiter.api.Assertions.assertThrows;

importjava.util.stream.Stream;
importorg.junit.jupiter.api.Test;
importorg.junit.jupiter.params.ParameterizedTest;
importorg.junit.jupiter.params.provider.Arguments;
importorg.junit.jupiter.params.provider.CsvSource;
importorg.junit.jupiter.params.provider.MethodSource;

publicclassReverseStringTest {

privatestaticStream<Arguments> testCases() {
returnStream.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"),
Arguments.of(" leading and trailing spaces ", " secaps gniliart dna gnidael "), Arguments.of("!@#$%^&*()", ")(*&^%$#@!"), Arguments.of("MixOf123AndText!", "!txeTdnA321fOxiM"));
 }

@ParameterizedTest
@MethodSource("testCases")
publicvoidtestReverseString(Stringinput, StringexpectedOutput) {
assertEquals(expectedOutput, ReverseString.reverse(input));
 }

@ParameterizedTest
@MethodSource("testCases")
publicvoidtestReverseString2(Stringinput, StringexpectedOutput) {
assertEquals(expectedOutput, ReverseString.reverse2(input));
 }

@ParameterizedTest
@MethodSource("testCases")
publicvoidtestReverseString3(Stringinput, StringexpectedOutput) {
assertEquals(expectedOutput, ReverseString.reverse3(input));
 }

@ParameterizedTest
@MethodSource("testCases")
publicvoidtestReverseStringUsingStack(Stringinput, StringexpectedOutput) {
assertEquals(expectedOutput, ReverseString.reverseStringUsingStack(input));
 }

@Test
publicvoidtestReverseStringUsingStackWithNullInput() {
assertThrows(IllegalArgumentException.class, () -> ReverseString.reverseStringUsingStack(null));
 }

@ParameterizedTest
@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'",
"'MixOf123AndText!', '!txeTdnA321fOxiM'"})
publicvoid
testReverseStringUsingRecursion(Stringinput, StringexpectedOutput) {
assertEquals(expectedOutput, ReverseString.reverseStringUsingRecursion(input));
 }
}