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maven test class
<![CDATA[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.]]>
maven test class
<![CDATA[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());
}]]>
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