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

1 vote197 views2 answers
Ng generate class
Shell/Bash
0 vote167 views1 answer
Ubuntu vs kali linux
Shell/Bash
4 votes127 views2 answers
Git pull <remote> <branch>
Shell/Bash
0 vote131 views1 answer
How to delay the start of a program linux
Shell/Bash
2 votes189 views1 answer
Conda install nodejs
Shell/Bash
2 votes182 views2 answers
Linux which process is using a port
Shell/Bash
0 vote193 views1 answer
How to install face_recognition with conda
Shell/Bash
0 vote166 views1 answer
Get repository url git cil
Shell/Bash
0 vote182 views1 answer
Uninstall packages atom
Shell/Bash
16 votes250 views3 answers
How to uninstall everything in pip
Shell/Bash