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

9 votes346 views6 answers
Bash
Shell/Bash
0 vote304 views1 answer
Batch color change
Shell/Bash
0 vote315 views1 answer
Got error 'PHP message: PHP Fatal error: Uncaught Error: Call to undefined function json_decode()
Shell/Bash
19 votes331 views4 answers
Create windows 10 bootable usb in ubuntu
Shell/Bash
0 vote330 views1 answer
Install pg module
Shell/Bash
0 vote325 views2 answers
Grep exclude
Shell/Bash
0 vote323 views1 answer
Minimize on click in ubuntu dock
Shell/Bash
2 votes343 views1 answer
Openssh client for windows 10
Shell/Bash
5 votes342 views4 answers
Composer update single package
Shell/Bash
0 vote316 views1 answer
How to clear gradle cache gitignore
Shell/Bash