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Sonar-PMD is a plugin that provides coding rules from PMD.

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When asserting a value is the same as a boolean literal, use assertTrue/assertFalse, instead of assertEquals. Example:
public class MyTestCase extends TestCase {
	public void testMyCase() {
		boolean myVar = true;
		// Ok
		assertTrue("myVar is true", myVar);
		// Bad
		assertEquals("myVar is true", true, myVar);
		// Bad
		assertEquals("myVar is false", false, myVar);
	}
}