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[strToStrArray] Convert String to string array in Java (#12899) 

* [strToStrArray] Convert String to string array in Java

* [strToStrArray] add one more example
This commit is contained in:
Kai Yuan 2022-10-25 03:20:37 +02:00 committed by GitHub
parent 3a579f90ff
commit 2dd61b7d54
1 changed files with 49 additions and 0 deletions
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core-java-modules/core-java-string-operations-5/src/test/java/com/baeldung/strtostrarray/StringToStringArrayUnitTest.java Normal file
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package com.baeldung.strtostrarray;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertArrayEquals;
public class StringToStringArrayUnitTest {
private static final String INPUT = "Hi there, nice to meet you!";
private static final String FLIGHT_INPUT = "20221018LH720FRAPEK";
@Test
void givenAString_whenConvertToSingletonArray_shouldGetExpectedResult() {
String[] myArray = new String[] { INPUT };
assertArrayEquals(new String[] { "Hi there, nice to meet you!" }, myArray);
}
@Test
void givenAString_whenSplitToWordArray_shouldGetExpectedResult() {
String[] myArray = INPUT.split("\\W+");
assertArrayEquals(new String[] { "Hi", "there", "nice", "to", "meet", "you" }, myArray);
}
@Test
void givenAString_whenSplitToSentenceArray_shouldGetExpectedResult() {
String[] myArray = INPUT.split("[-,.!;?]\\s*");
assertArrayEquals(new String[] { "Hi there", "nice to meet you" }, myArray);
}
@Test
void givenAString_whenSplitToCharArray_shouldGetExpectedResult() {
String[] myArray = INPUT.split("");
assertArrayEquals(new String[] {
"H", "i", " ", "t", "h", "e", "r", "e", ",", " ",
"n", "i", "c", "e", " ", "t", "o", " ", "m", "e", "e", "t", " ", "y", "o", "u", "!"
}, myArray);
}
@Test
void givenAString_whenSpecialRuleRequired_shouldGetExpectedResult() {
String dateStr = FLIGHT_INPUT.substring(0, 8);
String flightNo = FLIGHT_INPUT.substring(8, FLIGHT_INPUT.length() - 6);
int airportStart = dateStr.length() + flightNo.length();
String from = FLIGHT_INPUT.substring(airportStart, airportStart + 3);
String to = FLIGHT_INPUT.substring(airportStart + 3);
String[] myArray = new String[] { dateStr, flightNo, from, to };
assertArrayEquals(new String[] { "20221018", "LH720", "FRA", "PEK" }, myArray);
}
}