I am testing a simple helloWorld class.
package Codewars;
public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello World");
}
}
And I have a test class as follows (based on the answer ):
import static org.junit.jupiter.api.Assertions.*;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
class helloWorldTest {
private final ByteArrayOutputStream outContent = new ByteArrayOutputStream();
private final PrintStream originalOut = System.out;
@BeforeEach
public void setUpStreams() {
System.setOut(new PrintStream(outContent));
}
@AfterEach
public void restoreStreams() {
System.setOut(originalOut);
}
@Test
void test() {
HelloWorld.main(null);
assertEquals("Hello World\n", outContent.toString());
}
}
It results in failure with error message as follows:
org.opentest4j.AssertionFailedError: expected: <Hello World
> but was: <Hello World
>
at [email protected]/org.junit.jupiter.api.AssertionUtils.fail(AssertionUtils.java:55)
at [email protected]/org.junit.jupiter.api.AssertionUtils.failNotEqual(AssertionUtils.java:62)
...
It seems like the strings are same and still the error is thrown?
Thank you in advance.
