Maven test class

mvn install -Dmaven.test.skip=true

# or

mvn install -DskipTests

# If -Dmaven.test.skip=true (or simply -Dmaven.test.skip) is specified, 
# the test-jars aren't built, and any module that relies on them will 
# fail its build.

# In contrast, when you use -DskipTests, Maven does not run the tests, 
# but it does compile them and build the test-jar, making it available 
# for the subsequent modules.

Source: stackoverflow.com

Maven test class

private final ByteArrayOutputStream outContent = new ByteArrayOutputStream();
private final ByteArrayOutputStream errContent = new ByteArrayOutputStream();
private final PrintStream originalOut = System.out;
private final PrintStream originalErr = System.err;

@Before
public void setUpStreams() {
    System.setOut(new PrintStream(outContent));
    System.setErr(new PrintStream(errContent));
}

@After
public void restoreStreams() {
    System.setOut(originalOut);
    System.setErr(originalErr);
}

sample test cases:

@Test
public void out() {
    System.out.print("hello");
    assertEquals("hello", outContent.toString());
}

@Test
public void err() {
    System.err.print("hello again");
    assertEquals("hello again", errContent.toString());
}

Source: stackoverflow.com

Similar codes

0 vote313 views1 answer
Copy raspberry pi files over ssh
Shell/Bash
0 vote299 views1 answer
How to open ubuntu file in visual studio
Shell/Bash
0 vote266 views1 answer
Sftp remote directory
Shell/Bash
74 votes291 views6 answers
Ubuntu kill port
Shell/Bash
2 votes265 views1 answer
Installing sh file linux
Shell/Bash
0 vote272 views1 answer
List threads in process ubuntu
Shell/Bash
0 vote263 views2 answers
Macos make file executable
Shell/Bash
0 vote293 views1 answer
Eliminare spooler di stampa
Shell/Bash
0 vote294 views1 answer
Git push with gpg key
Shell/Bash
0 vote269 views2 answers
Run python script in raspberry pi bootup
Shell/Bash